2020-2021年高二英语Unit13学案 新课标 人教版
高二英语Unit13课件 新课标 人教版
21.—Can you tell me the way to the post office? --I’m sorry. I’m a stranger here.
--Oh, I see, but thank you __C___.
--The instructions __D__ that you should mix flour with
water carefully first. A.go B.tell c.write D.say 24.—What do you think of Mr Zhang’s class? --Very interesting and lively. Almost no one can teach
8.The government tried to keep commodity prices
_B___.
A.moveless B.stable C.stationary D.unchangeable
9.It’s _A___ of you to get rid of the bad friends.
A.interest B.benefit C.proift D.advantage
4.He received much __B___ from reading good novels,
and his fluency in the English language gives him ____ the other candidates for the job. A.advantage, an advantage to B.benefit, an advantage over C.benefit, the benefit of D.advantage, a benefit to
人教版高二unit13学案
人教版高二unit13学案23 available adj.1 These tickets are available for one month.2 He is not available for the job.3 They have tried all available means to the open.24 massa/ A litre of gas has less mass than a litre of water.b/ A great mass of snow has fallen off the roof.c/ I have masses of work to do.d/ v. Dark clouds massed and we expected rain.25 floata/ vi. Wood floats on water. A balloon is floating in the sky. b/ vt. There was enough water to float the ship.c/ on the float float off26 absorbCotton gloves absorb sweat.be absorbed by… be absorbed in… absorb sb’s attention27 stableA stable government is essential to economic growth.28 sensitiveThe child is sensitive to eggs.29 mix withmix vi. Oil does not mix with water.mix…into… Don’t mix cotton with wool.30 break downa/ Rocks break down into dirt after many years.b/ Unfortunately, our car broke down half way.c/ Hearing the sad news, many people broke down and wept. d/ His health broke down as a result of endless hard work.31 freezing/ frozenWhen the temperature is below freezing, water will freeze.The water pipes froze.True or false:1 Water is a liquid at room temperature, and it has a relatively high freezing point.2 The reason why water can dissolve most substances on earth is that water has high heat capacity.3 Pure water has a higher freezing point and lighter than salt water.4 The salinity of the earth’s ocean is about 3.5%.5 When water freezes, its density increases.6 Other resources such as oil, gas, gold etc is as precious asa drop of rain.Choice:1 What is the meaning of the sentence:“ …and we have yet to learn much about them”?A We have already known a lot about them.B We have known a little about them2 The salinity of the Dead sea is sure the salinity in the ordinary ocean.A much high thanB much higher thanC less high thanD less higher than3 It is that makes the seaside city remain somewhat cool in summer.A the heat capacityB the water structureC the ocean motionD the density4 The water moving about 200 meters down is the depth where can’t reach.A the fishesB the marine lifeC the sunD the earth5 The water in the ocean also keeps the temperature of the earth somewhat by ……A un changeableB changeableC fastD motionless。
高二英语Unit13公开课 新课标 人教版
Salinity (Para3) (one kilogramme) sea water = salt water
dissolved solids and gases
(35 grammes)
pure water
Key points:
The salinity of the oceans:__t_h_i_r_ty_-_f_iv_e_p__a_rt_s_p__er__th__o_u_sa_n__d_(_3_.5_%__)___.
The Properties of Water
Reading
Unit13 The Water Planet
How much do you know about
water?
Individual work
Let’s have a quiz of water!
True or false questions.
Ocean motion (Para6)
water in the ocean
always moving
water’s density
changes in salinity and temperature
Dense water sinks and less dense water is pushed to the surface.
Dense water sinks and less dense water is pushed to the surface.
Paragraph 7. Main idea: _s_ig_n__if_i_c_a_n_c_e__o_f_w__a_t_e_r__t_o_n__a_tu__r_e__
Water, which seems so simple and common, is what makes life possible. Of all the resources on earth -- oil, gas, gold and so on -- nothing is as precious as a drop of rain. (paraphrase)
高二 Unit13 教案新部编本(Period 2)
教师学科教案[ 20 – 20 学年度第__学期]任教学科：_____________任教年级：_____________任教老师：_____________xx市实验学校The Second PeriodTeaching Aims:1.Learn and master the following words and phrases:cube,property,range,medium,relatively,dissolve,pure,relationship, mass,float,absorb,bottom,all the way,that is,add…to,mix with,take advantage of,manage to do2.Improve the students’ reading ability.3.Enable the students to realize that it is important to protect the water on our planet.Teaching Important Points:1.Improve the students’ reading ability.2.Master the following phrases:all the way,that is,mix with,take advantage of,manage to doTeaching Difficult Point:How to make the students understand the reading passage better.Teaching Methods:1.Discussion before reading to make the students interested in what they will learn.2.Fast reading to get a general idea of the text.3.Discussion after reading to make students understand whatthey’ve learned b etter.4.Careful reading to get the detailed information in the text.Teaching Aids:1.the multimedia2.the blackboardTeaching Procedures:CStep Ⅰ Greetings and Revision(Greet the whole class as usual.)T:Yesterday we learnt something about water.Now who can tell me what you learned yesterday?S:I learned that water is very important to all the living things 1on the earth.T:OK,can you give me the reason why it is important?:Water can be used to wash clothing,to made electricity,to water S2the farm and so on.Of course,every day we must drink enough water.So water is very important.T:Anything else?:I know something about water.For example,from the experiments S3we made yesterday,I know vegetable oil can’t be dissolved by water.CStep Ⅱ Pre-reading and ReadingT:OK.Thank you for your answers to my questions.As we all know,we can’t live without water.But do you know what makes water so important to all the living things?Ss:No,we don’t know.T:Maybe we can get the answer to the question after reading the article for today.Before you read,first let’s learn the new words and phrases in the passage.(Teacher deals with the new words with the whole class.)T:Now please read the passage quickly to get the general idea and try to use the following structures to make six questions.(Teacher uses multimedia to show the structures on the screen.)1.What is/are ______?2.What does ______ look like?3.What are different parts of ______?4.What can ______ be compared to?5.How does ______ work?6.What are some examples of ______?(Teacher gives students five minutes to finish the fast reading and making questions.Five minutes later,teacher asks some students to write their questions on the blackboard.)1.What are the properties of water?2.What does the earth look like?3.What are different parts of the ocean?4.What can the ocean be compared to?5.How does the special air-conditioner—the ocean work?6.What are some examples of species in the ocean?T:Well done.Who can tell me the general idea of the text?:The passage mainly tells us it is water that makes the ocean so S4important to all the living things in the world.T:Good work.Next,let’s read the passage carefully to get more information about water.While you are reading,try to finish the chart in Post-reading on Page 21 and find out the answers to the questions on the blackboard.(Teacher gives students enough time to read the text and collects their information for the chart.):I think I can answer the first one.The answer is that theS5properties of water are chemical structure,salinity density,heat capacity and ocean motion.:In my opinion,the answer to the fourth question is that theS6ocean can be compared to a great place to live in.T:Do you agree with them?Ss:Yes.T:What about other questions?:I think plankton,sharks and whales are examples of species in S7the ocean.:The answer to the second one is that the earth looks like an S8ocean planet.T:You are quite right.Any volunteers?S:Dear teacher.Can you tell us the meaning of the special air-9conditioner—the ocean?T:Maybe it means that there are some similarities between air-conditioner and the ocean.S:Thank you.I got it.9T:Then,who can answer the question?:Because the ocean can keep the temperature of the earth S10steady,some students compare the ocean to a special air-conditioning.I think the ocean keeps the temperature of the earth steady by absorbing and releasing heat.T:Well done.There is only one question left.Who wants totry?(Nobody answers the question.)T:Do you thin k it is a question that the text can’t answer?Ss:Yeah.We think so.T:OK.Maybe you are right.But I want to know the reason why you think the passage can’t answer the third question.Ss:Because there is not any information about the different parts of the ocean.T:Then,are there any questions you would need to add to “cover” all the information in the text?:I have a question.Why is the water in the ocean always moving?S11S:Since changes in salinity and temperature affect water’s 12density,the water in the ocean is always moving.CStep Ⅲ Further Understanding and Language StudyT:Well done.I think you are very familiar with the passage.In the passage there are some words and expressions we should master.Now let’s look at the screen.I will give you some expla nations about the words and expressions.1.incredibly adv. (extremely or unusually)e.g.The water is incredibly hot.2.available adj.(that can be used or obtained)e.g.Tickets are available at the box office.The book is available to all the students.3.range vi.range from A to Be.g.Their ages range from 25 to 50.His interests ranged from chess to canoeing.4.But the way the water molecule…e.g.I don’t like the way (in which/that) he looks at me.。
高中英语高二教案学案高二英语第十三单元
科目英语年级高二文件high2 unit13.doc标题unit13章节第十三单元关键词高二英语第十三单元内容一、教学目的和要求⒈单词和词组ruler L.49 四会go on with the First World War wouldwide right(n.) L.50peacework out stick(vi.) stick to ruler L.51course(n.) L.52communist professor L.49 三会scientific darkness shy content lead to discovery L.50cheque human rightprove bent respect leading sadness take sides(in) L.51fueladvance advanced mathematics education L.52further education technicalAlbert Einstein Alexander Bell L.49 二会the Nobel Prize bookmark L.50Swiss Hitler Jew L.51⒉日常交际用语：Is it…?No, it’s not him/her Is he/she…?Who is he/she? What did he do? It must be him/her⒊语法：学习名词性从句作语的用法。
二、重点与难点分析Lesson 49⒈I’m doing a word puzzle in t his newspaper. 我正在猜报纸上的字谜。
puzzle意为“谜”，do a word puzzle or do a puzzle in words意为“猜字谜”。
这里的puzzle是名词，作“难题”，“难以解释的东西”讲。
例如：The murder case was a puzzle to the police. 这桩谋杀案对警察局来说是一个难题。
高二英语教案汇总Unit13AlbertEinstein2（新课标版高二英语下册教案教学设计）
高二英语教案汇总Unit 13 Albert Einstein2(新课标版高二英语下册教案教学设计)Lesson 50Teaching procedures:Step 1.Revision1. Check the homework exercises.2. Revise the key points of Lesson 49.Step 2.PresentationTalk about Albert Einstein, collect the information provided by the students and write them on the Bb.Step 3.Fast-readingRead the first passage and answer the following questions:(1) What scientific work is Einstein famous for? (physics)(2) Where did he spend the last part of his life? (the US)Step 4.Detailed-readingNow get the students to read the first text more carefully, and answer the questions on P74 of Workbook and make judgment on P75. Do orally with the class.1. When and where was Einstein born?Albert Einstein was born in Germany on March 14th, 1879.2. How did Einstein manage to study at university in Switzerland?To earn enough money to continue his studies, he worked in Switzerland first as a teacher, then in a government office. With the pay that he received and saved, he went on with his studies at university in Switzerland.3. Why was the period between 1905 and 1915 an important one for Einstein?During that period, he began the research and studies whichled to his new discoveries in physics.4. What was he given for his scientific research in physics in 1921?He was given the Nobel Prize for Physics.5. Did Einstein care for money? How do you know?In 1933 Einstein and his family left Europe for the USA. He had been invited to teach at a university there. He accepted the job of Professor of Physics, but asked for very little money. He had never been interested in becoming rich. He once refused to speak on the radio for $ 1,000 a minute. Another time someone saw him using a cheque for $ 1,500 as a bookmark. Then he lost the book!6. What else did he work for besides his scientific research?Besides his work in physics, he spent a lot of time working for human rights and progress.7. Why was he so fond of music?It was said that he found in music the peace which was missing in the world full of wars and killings.8. What kind of person do you think Einstein was?Such was Albert Einstein, a simple man and the 20th century's greatest scientist.9. What can we learn from Albert Einstein?His spirit of devotion to science, his simple way of life and his love for peace.Step 5.List the events (P74 Ex.2)1879: He was born in Germany.From 1895 on: He studied at university in Switzerland.1905: He received a doctor's degree.1921: He won the Nobel Prize for physics.1933: He and his family left Europe for the USA.1940: He took American nationality.1955: He died in the USA.Step 6.Note makingP3, Part 2. Tell the students to read the first part text and make notes. Do orally with the class.Step 7.ReferenceP3, Part 3. Tell the students to read the first part text and tell what the bold parts refer to. Answers:1.himself –Albert2. it – to get along with the other boys3.there – in Switzerland4. that – the pay5.Where – at university6.one – the period between 1905 and 19157.which – research and studies 8.which – the peaceStep nguage points of the text:1. When he was a young boy he used to ask lots of questions...在孩童时代，他常常问许多问题……used to do sth. 意为“过去常常做某事”，在使用时应注意两点区别：(1) 与would的区别：used to一般不和过去的频度状语连用，而would可以。
2021年高二英语Unit13-Unit16教案 人教试验修订本
2019-2020年高二英语Unit13-Unit16教案人教试验修订本Lesson 49Step 1. Presentation:1. Ask the students the following questions:a. What did you want to be when you were children?b. What is a famous scientist like in your opinion?2. Show the students a photo of Einstein and then ask the students about their impressions of him?3. Discussion:Topic:What makes a famous scientist?a. Preparation:Every four students can form a group and have a discussion about the following topic. One should work as a secretary and write down what is said. Another should work as a spokesperson and report the result of the discussion to the rest of the class.b. Evaluation:The class will decide how good the report is. (Five stars stand for the best.)Step 2. Dialogue:1. Make the students listen to the record of the dialogue and answer the following questions:a. Who is Abraham Lincoln?b. Who is Karl Marx?c. Who is Alexander Bell?d. What do you know about Einstein according to the dialogue?2. *Ask the students to pick out the questions asked to get some information about a famous person in the dialogue?Who is he?What did he do?*Ask the students to pick out the sentences which give the necessary information?The American president who fought for the freedom of slaves in the USA.He wrote books about munism.He said that all munists should help each other.He made the first telephone.He was famous professor of physics. He lived in this country, was born in Germany and spent the last part of his life in the USA.Step 3. Practice1. Show them a picture of another famous scientist.2. Divide the students into five or six groups and ask them to have a free talk about the famous person.3. Let them to have a free talk in English for about ten minutes and then ask them individually to reflect on the development of the conversation, what was said, in what order, and by whom.4. Give each group a piece of paper. Make sure the paper is large enough. (It is essential that throughout the activity all the students are writing on pieces of paper of the same size).5. Give them instructions on how to write out the conversation. They should write on one side of the paper only, and should draw a margin on the left. In the margin they will write only the initials of the speakers. Between each utterance they should leave a space.6. Evaluation:1. Show the students’ work and let them decide wha t is the best.2. Pick out the sentences which are used properly and correctly.3. Help them correct the mistakes made in the work.Step 4. HomeworkFinish the homework in the homework.Lesson 50-51Step 1 Job settingDivide the students into five or six groups and ask each group to collect as much information about one aspect of Einstein as possible after class. The students should be encouraged to use multi-media to show their work.Possible aspects:His lifeHis careerHis hobby(The student may decide on one aspect by themselves according to their interest.) Step 2 Job Presentation1. Ask different groups of students to show the rest their work on introducing Einstein.2. Let the students choose the best work.3. Help them to find out the mistakes or problems with their work.Step 3 Reading1. Warming upa. Watch a video of an A-bomb exploding?b. Generally explain what the theory of relativity is.2. Reading and prehension:Ask the students to read the passage and answer the following questions:1. When and where was Einstein born?2. How did Einstein manage to study at university in Switzerland?3. Why was the period between 1905 and 1915 an important one for Einstein?4. What was he given for his scientific research in physics in 1921?5. Did Einstein care for money? How do you know?6. What else did he work for besides his scientific research?7. Why was he so fond of music?8. What kind of person do you think Einstein was?9. What can we learn from Albert Einstein?Step 4 Introductive writing*preparation1. Ask the students to read the text again and perceive what an introductive writing is like.2. Show the students the steps of doing an introductive writing.a. Decide on a person to be written about.b. Collect as much information as possible about the famous person.c. Have a discussion about what information the readers may be interested in.d. Pick out the useful information and put them in a logical order.e. Check the style of the language.*practice(homework)Ask the students to work in groups and write a similar introductive writing.Step 5 Evaluation1. Show these articles in the class. (or the articles can be shown to the class beforehand)2. Ask the students to read each article, pick out what they call problems and suggest ways to improve it.3. Help the students to decide which suggestions are reasonable and acceptable. Then make necessary changes.Step 6 PresentationPresent the articles in the classroom.Lesson 52Step 1 ListeningFinish the listening task.Step 2 Grammar1. Ask the students to go through all the passage and pick out all the noun clauses.2. Make changes to the article written in the previous class trying to use as many as possible sentences in which noun clauses are used as subjects.3. Finish and check the exercises in the workbook.Step 3 HomeworkFinish all the exercises in the homework.A Teaching Procedure for Unit 14 Book 2BLesson 53Step 1 Dialogueprehension;1. Ask each student to raise questions about a show of satellites in a museum ona piece of paper.2. Make the students read the dialogue and see if their questions are answered in the dialogue.Step 2 Practicea. Make the students act out the dialogue.b. Divide the students into several groups. Some groups will be asked to design a high-tech show in a local museum. The other groups can raise as many questions about the show as possible.c. Get the designers to answer the questions.d. Collect all the questions and answers and ask several pairs to act out similar dialogues.Lesson 54-55Step 1 Warming-up1. Students sit in a large circle or in any other way which will allow the smooth circulation of sheets of paper.2. Give each student a sheet of paper. They write the names of pieces of equipment they are familiar with at the top of the page. Everybody can briefly describe their equipment.3. Each student passes the sheet to the person on the left, who reads the titleand writes a question about the subject. The papers are passed on again to the left.4. The procedure is repeated with learners writing a question on every piece of paper they receive. They should read the questions that have already been written, so as to avoid repetition.5. When the papers have e back to their owners they read all the questions and then write a text which answers them. They decide on the order in which they will answer the questions and on how to organize the text, but they must answer all the questions.6. The questions and the corresponding texts are displayed together and learners mill around reading the questions and responses, checking if their question has been answered. If the students have any queries about the way their questions were answered they should make a note of these.7. In turn, the writers of the texts stand by their work while the other members of the group ask for clarification, or for an answer if their question was not answered in the text.Step 2 Reading1. Get the students to keep in mind the following questions:a. What is a satellite?b. Why is it possible for a man-made satellite to go into space?c. What can be put into a satellite?d. How does a satellite produce electricity?e. Is it possible for a satellite to change its direction? How?f. Why is it necessary for broadcasting satellites not to change their positions?g. Can we use weather satellites? How?3. Get the students to answer the questions after reading the passage.Step 3 PracticeDivide the students into several groups and make them use the materials about kinds of modern equipment in step one to make up a short article introducing them. Get the students to pay attention to the language style at the same time.c. Let them discuss and prepare for the article.d. After 8 minutes make them present their articles in the class.e. Evaluate their jobs and decide which one is the best.Step 4 HomeworkFinish all the exercises in the workbook.Lesson 56Step 1 ListeningFinish the listening task in the workbook.Step 2 Grammar1. Ask each student to identify a question about the attributive clause they have or think they have.2. Check that every student has got at least one question.3. Present the questions on the blackboard and get whoever thinks he knows the answers to answer them. If they cannot agree with each other, a debate is encouraged. They can use reference books, grammar books, and get help from the teacher.Step 3 Homework1. Pick out several short passages written by students in the previous class and ask them to rewrite them. This time, get them to use as many attributive clauses aspossible.2. Finish all the exercises in the workbook.Unit 15 A famous detectiveLesson 57Step 1 PresentationAsk the students to listen to the tape and then answer the questions: Why did Mr. Ball call on Mrs. Zhu? How much do you know about Dr. Zhang?2. Let the students to answer the questions in pairs and check with the whole class.Step 2 dialoguePlay the tape for the students to listen and follow.Go through the dialogue briefly and make sure the students understand it.Play the tape again, and the students to listen and repeat.Ask the students to practice in pairs.Step 3 retell the dialogue with their own wordsSuggested words:Call on sb to do sth/ would like to meet/on a visit from/have a nice time/personal affairs/see to/relatives/delay the conference/the rest of the month/pick up/remember …toStep 4 Practicelist the suggested pattern on the blackboard and do a repetition drill with the class, let the students practice in pairs.2. make a similar dialogue, using other words and phrases. Ask them to act it out in class.Step 5 WorkbookEx.1. Revise the everyday English expressions. Then get the students to do the dialogues in pairs. Check the answers with the whole class.2. Ex. 2 should be done orally in class. Point out the different patterns with similar. Encourage the students to produce as many as sentences as possible.Step 6 HomeworkFinish off the Workbook exercises.Lesson 58Step 1 RevisionAsk the students to read and recite the dialogue.Check the homework excesses.Step 2 PresentationGet the students to talk about the picture and describe what they can see.Read the instruction and the questions.Ask the students to read the passage and answer the questions in pairs.Step 3 ReadingLet the students to read the passage carefully and answer the questions of Ex.1.Check the answers with the whole class.Step 4 Reading aloudPlay the tape for the students to listen and follow.Step 5 DiscussionPut the students in groups of four. How do you think the story will end ? collect answers in class.Step 6 story-retellingSuggested words:One day / lady/see/help…with/died/uncle/heard/sleep/get along well with/visit/hole/length/nail/discover/life/in dangerStep 7 HomeworkFinish off all the exercises in the workbook.Lesson 59Step1 RevisionCheck the homework exercises.Step 2 presentation and readingLet the students read the passage to find the endingread carefully for the second time to answer the following questions:where did Holmes and Watson wait?Did the young lady go into her bedroom?What did Holmes and Watson hear?Why did Holmes strike a match?Why do you think the snake attack its keeper?Step 3 readingPlay the tape for the students to listen and follow.Step 4 retellingSuggested words:Waiting/until/go upstairs/open/shut/kept the light/heard a noise/ a pale light/bell rope/snake/rushed into/found him…Step 5 WorkbookRevise the reading passage. Do the exercises in pairs. Check the answers with the whole class.Ask a pair of students to the Bb to write down their sentences on Bb and correct mistakes if there are.Step 6 HomeworkFinish off all the exercises.Lesson 60Step 1 revisionDictations of words and expressions of this unitpay a visit to sbcall at / pay a visit tohave a seat / please be seatedbe on a visitpersonal affairssee todelay doing sthintend to dotake notes / make a note ofmeet sb / pick sb upthank you again for callingremember me to sbbe back from India not long agometallic noiseact strangely towards sbI dare sayI have no other relativesthink for a whileexamine one’s bedroom c loselya piece of furniturea heavy metal chesta box of matchesstand against the wallkeep petsthe noise of his locking the doorthere’s no doubt about itI’ll be locked in your room during the nightlay /put the thin stick on the pillowit’s a long wa it in the darkgo upstairsin the living room downstairssleep with the light still ona long low whistlejump from the bedthe scream went on and onfind sb lying on the groundyou are supposed to die like thatsth be tied with a rope/cordsit in silenceStep 2 listeningDo as the teachers’ book instructs. Play the tape twice but for the first time, to get the general idea.And for second, finish the detailed exercises.Step 3 language points of this unit.1. Do e in. 进来，进来。
高二英语教案：新教材高二英语unit 13全单元分课时教案
Unit 13 The Properties of WaterTeaching goals:1.Talk about water and the ocean2.Practice communicative skills3.Review Modal Verbs4.Write an explanation paragraphTeaching Plan: (Six Periods)1st period: Warming-up and Reading (1)2nd period: Reading (2)3rd period: post-reading and Listening (SB)4th period: Integrating Skills (SB)5th period: Speaking6th period: Grammar and Language StudyPeriod 1 Warming up & Reading (I)Teaching goals:1.To get the Ss to understand the main properties of water by connecting themwith some common phenomena and learning to explain the phenomena.2.To enable them to be aware of the importance of water, making good use ofwater in a proper way and protecting water resources.Important points in teaching:Words: benefit, available, pure, mass, float, absorb, release, stable, bottom, habitat, dissolve, property.Phrases: benefit from, range from… to…., all the way, be made up of, that is, freezing point, break down, mix with, be measured in, take advantage of,keep…steady, manage to, be sensitive to, up to.Structures: whatever…., ….., that is,…..Teaching procedures:Step1: Lead inRead a short poem and guess its name: A letter from _______. (Water) Dear User,Shame to you all, the Ignorant,I am your lifeBut you seem not to value meGive me all the respectFor in me is eternal lifeIf you continue abusing meSurely, all forms of life will wither awayHave you ever imagined,Life without me?I tell you, it will be unbearableThink twiceFor every drop counts...Qs:1) What does “Dear user” here refer to?2)What does it talk to its users?3)On which planet does it exist? －On the earth, which is also called thewater planet.4)Do you know why it is called “The water planet”?－Because about three quarters of the earth is covered by water.Step2:Pair work: Collect as many words as possible related to water. Qs:➢How much do you know about water?➢Is all water fresh or salty?Step3: Talk about the properties of water.1. Pair workT:Water is around us and inside us. We can’t go without water. Qs:➢Why is water so important to living things?➢Can you point out some of its properties or characteristics? Suggested vocabulary:●It's colorless, tasteless, odorless and universal dissolvent.●It feels wet;●It exists in three forms: liquid, solid, gas, and is cycled through the water cycle;●It can absorb a large amount of heat;●It sticks together into beads or drops;●It's part of every living organism on the planet; etc.2. Group workLearn more about water’s properties by doing some simple experiments and learn to describe an experiment.✧What property of water does each of the four experiments illustrate?✧What causes this phenomenon?✧What’s this phenomenon related to?①Experiment 1 shows how air pressure causes a piece of thick paper to cling to an upturned glass of water.②Experiment 2 illustrates how substances with different density behave when placed in the same container.③Experiment 3 is an example of how water dissolves substances and objects.④Experiment 4 illustrates some of the differences between salt water and fresh water.3. T:What other properties of water do you know about?What causes the following phenomena? Can you explain?①We can get a lot of nutrients by drinking water and having soup.②Wood floats on water while iron sinks.③The coastal areas are often neither too hot nor too cold.④Why can some living things live at the bottom of the ocean where there is no sunshine? (If these questions are too difficult) Try asking questions about the properties of water and then give answers to them.Step4: Pre-readingLook at the titles in the text below. Do not read the whole text. Pick out the subject of each paragraph. Use the structures below to make six questions related to the subjects.✧What is/ are ________?✧What does _________ look like?✧What are different parts of ______?✧What can ________ be compared to?✧How does _______ work?✧What are some examples of ________?1.Skim to find the words and phrases which describe the properties of water in thereading text.2.Scan to Find out some basic facts about life in the oceans.✧Life on earth began in the oceans about three billion years ago;✧99% of the living space on earth is in the oceans;✧There are about five million (known) species in the oceans;✧Life in the oceans ranges from tiny plankton to giant whales.Step5: Homework1．Read the text carefully and find out the detailed information about water properties.2．Think as many examples as possible to illustrate water properties.Period 2 Reading (Ⅱ)Teaching steps:I. RevisionT: Yesterday you were required to ask more questions about water’s properties and find out the detailed information about water properties as well. So now let’s have a little quiz about the properties of water.●True of false questions:1)Water is a liquid at room temperature, and it has a relatively high freezing point.2)The reason why water can dissolve most substances on earth is that water has high heatcapacity.3)Like all the other substances, water gets smaller (contract) when it freezes.4)Pure water has a higher freezing point and lighter than salt water.5)The salinity of the earth’s oceans is about 3.5%.6)When water freezes, its density increases.7)Other recourses such as oil, gas, gold etc is as precious as a drop of rain.(TFFTT FF)II. While-reading1.As we all know, Charles Darwin is famous for his “The Origin of Species”. (According to histheory of evolution)Qs: 1) Was there any life on the earth billions of years ago?2) If any, what was the original life like at that time?3) Where did it live? －In the deep blue seas.4) How does the world take its shape, which is quite different from what it used to be,especially those various organisms? －Billions of years’ natural selection.2．It is said that 99% of the living space on earth is in the oceans.Qs: 1) What does this fact result in? －Marine life is incredibly rich and varied.2) Can you give some specific numbers or examples?－There are about five million species in the oceans. They range from the tiniest plantsall the way up to giants (e.g. sharks and whales).3) What does this fact imply? Do you agree?－Water is an excellent medium for life.4) Why do you agree that water is an excellent medium for life? (Based on commonknowledge)➢W ater is a liquid at room temperature and has a relatively high freezing point;➢A ll living creatures need food to survive, but on many occasions the nutrients becomeavailable to living things only when they are dissolved by water.3．So we know that one of water’s properties is its dissolvability(溶解性).Qs: 1) Do you know what gives water such a unique property?－The chemical structure of water.2) What does the water molecule look like?－A water molecule consists of two hydrogen atoms and one oxygen atom. The twohydrogen atoms are bonded to one oxygen atom to form a 'V' shape. The two hydrogenatoms form a polar molecule, that is, one with a slightly positive end and one with aslightly negative end.3) Can you give some other examples which are also resulted from water’s uniquechemical structure?－Plants can pull water up their roots via a capillary(毛细管) process;－We can get a lot of nutrients by drinking soup.That’s water’s another property－dissolvability.4. Since water is such a universal solvent, it can dissolve just about anything including many gases and solids. As a result, there is sea water.Qs: 1) Do you know the salinity of the earth’s oceans? －about 3.5%.2) What does it mean?3) Have you ever noticed such a phenomenon that in winter water in some containers orsmall rivers often freezes while that in seas not? Can you explain it?－The salinity of sea water can affect the freezing point of water. Sea water has a lower afreezing point, so even when the temperature of sea water falls below 0℃, sea water is still liquid.5. However, no matter whether it is sea water or pure water, “wood floats on water while ironsinks” always works. How do you explain that? What property of water is this?－If a substance has a lower density than water does, it will float on water; Otherwise, it will sink.Qs:1) What is density? And what’s the density of pure water?－Density is the relationship between mass and volume and is measured in kilos per cubic meter (kg/m3). The density of water is 1,000kg/m3.2) Does it also go for the phenomenon that Ice looks larger than water of equal mass?－Yes. Water’s density decreases when it turns to ice, so its volume increases.3) Does all the water in the same river or ocean have equal density? Tell your reasons.—No. Changes in salinity and temperature affect water’s density. Cold water of high salinity usually is most dense and will tend to sink to the bottom of the ocean.6. Qs: 1) What do different densities in the ocean result in?－Dense water sinks and less dense water is pushed to the surface. Thus water in the ocean is always moving.2) What phenomena can this result help us explain? Please give examples. (If necessary,give students some hints such as showing a picture etc.)➢Ocean motion helps move nutrients around and adds energy to the marine ecosystems.➢Different marine creatures live in different levels of the ocean. (Because of the foods they need, sunshine etc.)7. Read following statement and think what conclusion you can draw? Or what property does itrefer to?It is said that a man of 60kg loses about 1L water through breath and skin evaporation (皮肤蒸发) every day. In other words, 539kcal heat is released in these two ways. If so much heat were kept in human body, it would raise body temperature by 9℃.Can you imagine the result?－Water has a relatively high heat capacity and can accommodate the climate automatically. It can absorb and release a lot of heat without big changes in its temperature, thus creating a stable environment.8. Here are some more familiar phenomena.What property of water is each of them related to?➢The coastal areas are often neither too hot nor too cold. (Water’s high heat capacity)➢Ice floats on water. (Density)➢When the sea water in a container is evaporated (蒸发), there will be some salt left.(Dissolvability)➢Irrigate in winter can help raise the soil temperature. (Water’s high heat capacity)➢People swimming in the Dead Sea float; they can even read a paper while lying on their back in the water. (salinity and density)IV. Homework1.Try to think as many examples as possible to show that water is made use of to bring benefitto human beings.Period 3 Post-reading & ListeningTeaching goals:1.To get students have a better understanding of water.2.To learn some new words and sentence structures.Teaching procedures:Part one Post-readingI. Better understand the properties of water1. “Where there is water, there is life!” Can you use some facts to illustrate it?－Water is a medium for life.So far as we know, life only exists on earth, because there is water. Etc.2. Our planet is a water planet of which two thirds of its surface is covered by water. What’s more, our body is also mainly composed of water. Do you know following figures which show how much water there is in parts of our body? 60%, 70%, 82%, 90%➢Up to _____ of the human body is water.➢______ of the brain is composed of water.➢______ blood is made up of water.➢The lungs are nearly _____ water.3. Water is the source of life. That’s why water is an excellent medium for life. And you know all this is because of water’s unique properties.II. Revision on the properties of water1. What are the properties of water?➢Water is polar.➢Water is liquid at room temperature.➢Water has a relatively high freezing point.➢Water has density 1,000 kg/m3.➢Water has high heat capacity.➢…2. What causes water to have such unique properties?－It’s molecule form / chemical structure.3. What is water molecule like?➢Chemical structure: two hydrogen atoms and one oxygen atom.➢Different parts of it: a slightly positive end and a slightly negative end, so it is polar.➢The function of it: it causes water to be able to dissolve both solids and gases, and that’s why water can break down nutrients quickly.4. Do pure water and salt water have the same chemical structure? Does pure water have salinity?Qs: 1) What’s salinity?2) What is sea / salt water? －A mixture of pure water, dissolved gases and solids.3) How does salinity affect water?4) How does it affect water’s weight and freezing point?－The higher salinity water has, the heavier the water is.The higher salinity is, the lower the freezing point of water is.5. Salinity also has something to do with the density of water. The higher salinity is, the higher density of water is.Qs: 1) What is density?2) How is density measured?3) Which is denser, water or oil?4) What will happen when water and oil are in the same container? What does thisphenomenon illustrate?－Oil floats on water. A less dense substance floats on a denser substance.5) Does water in the same ocean have the same density?－No. Denser water sinks and pushes less dense water to the surface.6. That’s why the ocean water will never stop moving. Ocean motionQs: 1) What does ocean motion mean?2) How does ocean motion work?－Denser water sinks and pushes less dense water to the surface.Ocean motion helps move nutrients around and adds energy to the marine ecosystems.3) What causes ocean motion?－Changes in salinity and temperature.7. The temperature of the ocean water always keeps steady, making the ocean a safe and comfortable habitat. Do you know why?－Water has a relatively high heat capacity.Qs: 1) What is heat capacity?2) What’s the function of heat capacity?－It determines how a substance absorbs and releases heat;It keeps water temperature steady;It keeps the earth’s temperature steady.III. Reflection1. There is a close relationship between some properties of water, for example, salinity, density and ocean motion. How do they affect each other?2. Suppose you are one of the main properties of water (resolvability, salinity, density …). You think you are the most important and have the greatest effect on life. Try to persuade others by describing: 1) What you are.2) What affects you.3) What you are made the most of by human beings.Part two ListeningI. Pre-listeningGive a very brief introduction of The Rime of the Ancient Mariner and its author Samuel Taylor Coleridge. Here rime is the variant of rhyme.II. While-listening1.Listen to the story (Part 1) and find the information about it. (When, where, who, what?)When: 18th century? (No, not mentioned)Where: on a shipWho: sailors / marinersWhat: One of the sailors kills a bird that brings good luck to the ship, by doing which he has brought bad luck and death to the sailors.2.Listen to part 1 for the second time and finish the following true or false questions.1)This poem was written by a British poet Samuel Taylor Coleridge in the 1700s.2)In the poem, one of the sailors kills a fish under the ship.3)It is believed that the animal he kills is one that brings good luck to the ship.4)Other sailors are so frightened and angry that they kill the sailor.5)The sailors are extremely thirsty but they can’t drink the water in the sea, because it istoo dirty.(Keys: TFTFF)3.Listen to part 1 for the third time and answer the following questions:1)Who tells the story in the poem?2)What does one of the sailors do?3)What do you think will happen next?4)Why are the other sailors frightened?4.Listen to part 2 and complete the following sentences.1)Finally they decide that he must die －_______ the mariner who _______ the bird.2)He must _____ _______ it all and will ______ by having to tell the story…3)_____ ______ on the ship, _________ on the ocean, the mariner suffers from__________ and ______.4)His story _____, the ________ mariner says _________ and asks them to learn from his___________.Keys: 1) except, shot; 2) live through, pay 3) Left alone, drifting, loneliness, fear;4) told, ancient, farewell, sufferings5.Listen to part 2 again and answer the following questions:1)What happens to the sailors?2)What happens to the mariner?3)Why is the person telling the story?4)Who is the person actually?II. While-listening1.Reflection: What do you learn from this story?－Everything existing in the world has their own certain values, we should understand and respect them.2.CreationWork with partner and try to come up with a good, scary story like the one about the mariner. Homework1. Preview Integrating Skills “Nature’s Nursery: Estuaries” on page 22Period 4 Integrating SkillsTeaching goals:1.To get students to know what estuaries are and their functions2.To learn to write an explanation paragraphTeaching procedures:I. Lead-inLook at the map of China, answer these questions:1.Can you name the three cities marked on the map? Where are they? (Chongqing, Shanghai,Dalian )I2.How much do you know about them? Is the economy there well-developed or not?3.Which city is the most developed? Why?Now let’s look at this map and then answer the following questions:1.Can you tell what map it is? Where is it?2.Is the water here salty or fresh?3.What’s the place called where river and the ocean meet?II. While-reading1. Skimming1) Find out the definition of estuary.(An estuary is the body of water where a river meets the ocean. Salt water from the ocean and fresh water from the river mix together in an estuary. This mixing of fresh and salt water creates a unique environment filled with life of all kinds---- a zone between the land and sea.)2) What functions of estuaries have been mentioned in the passage?(Great places for nature’s young animals clean our water by absorbing nutrients and pollutants from water coming from inland sources; provide both recreation and education for human beings.)3) Discussion.➢What living conditions do you think are needed for nature’s young ones?➢Do estuaries have such conditions for them?2. Discussion➢What living conditions do you think are needed for nature’s young ones?➢Do estuaries have such conditions for them?3. Scan the passage and answer the following questions.•Why are estuaries such good places for nature’s young ones?•What does “density” mean in this passage?•How do estuaries affect the water that passes through them?•Why are estuaries more sensitive to pollution than other areas?•Why are estuaries important to human beings?(Answer to question 1) In estuaries, animals can enjoy all the benefits of the oceans without having to face many of its dangers. Tides provide energy for the ecosystems, but estuaries are protected from waves and storms by islands, mud or sand. Nutrients from both the land and the ocean arrive in estuaries.(Answer to question 2) It means the degree to which an area is filled with things or people.(Answer to question 3) They absorb nutrients and pollutants from water coming inland sources, thus cleaning our water.(Answer to question 4) Because estuaries act as filters(过滤器), many pollutants end up inthem.(Answer to question 5) Estuaries provide both recreation and education for human beings. For example, people can fish, swim and have fun on the beach; scientists and students have endless opportunities to study a variety of life in the habitat. Estuaries also contribute to the economy through tourism and fishing.4. Finish the following passage with words from the text.Estuaries are bodies of water along coasts that are ________ (形成) when fresh water from rivers ________ with salt water from the ocean. In estuaries, the fresh river water is blocked from streaming into the open ocean by either surrounding mainland, or islands. This mixing of fresh and salt water _______ a unique environment ______ with life of all kinds -- a zone between the land and sea known as an estuary. The estuary gathers and holds a ______ of life--giving nutrients from the land and from the ocean, forming an ecosystem that contains more creatures than any other ________ on the earth. Estuaries are also important for human beings. They protect water quality by ________ pollutants from water coming from inland sources. They are centers for _______(娱乐) and education. Estuaries, in short, are treasures.(formed, mixes, creates, filled, variety, habitat, absorbing, entertainment)III. Post-reading DiscussionAs we learn from this passage, many cities which are built around estuaries, like Shanghai, Guangzhou, Ningbo, Shenzhen are very developed. Can you explain why?( They are near Yangtze River Delta, Pearl River Delta…)(Convenient transportation, rich resources…)IV. WritingDo you still remember what we learn about the properties of water? In that passage, the writer introduces the chemical structure and several properties of water to us, such as salinity, density, heat capacity. So from this we know when we are explaining what something is or how things happen, it is important that our explanations should be well organized and easy to understand.Tip oneIf we are describing a process，we’d better explain each step in the order it happens. Tell the readers about the causes and effects and use words like first, second, then, etc to show the order of the steps.•First…•Second…•Third/ Then…•Last…Tip twoIf we are writing about something that has several parts, we should describe each part and explain its function and structure.The following questions may help:What is it? How many parts is it made up of?What’s the structure of each part? How does it work?HomeworkImagine that your science teacher ask you to explain one of the following questions: Why does an ice cube float?What will happen to a piece of metal if you put it in water?Why do so many species live in estuaries?Why have so many cities been built by estuaries?Choose one of the questions and write a passage, using what you know about nature and science and what you have learned from this unit.Period 5 SpeakingTeaching aim:1.Get students to talk about the main use of water in our life and their effects.2.Draw students’ attention to the importance of using, saving and protecting our water as well. Teaching procedures:I. Revision1) Can you use your own words to tell us the general idea of the two reading passages?2) What do you learn from our previous classes?－Water is necessary / a must to life. Without water, life, as we all know, would not exist. II. Speaking1. Pre-speaking1) Do you agree with the saying “Without water, life would not exist.”?2) So not only you and I agree with this opinion, but also the United Nations hold the same view. And that’s why we have World Water Day.Q: Is there anyone who knows when it is? －Mar. 223) Brief background information about World Water Day: World Day for Water is established by the United Nations General Assembly's resolution 47/193 of 22 December 1992. It is a unique occasion to remind everybody that concrete efforts to provide clean drinking water and increase awareness world-wide of the problems and of the solutions, can help make the difference.4) Last year we witnessed some great disasters such as the typhoon “Yunna” and the tsunami in the India Ocean. What a coincidence that the theme for World Water Day 2004 was “Water and Disaster”. World Water Day 2005 will be guided by the upcoming water decade's theme "Water for Life". It will be the starting day for this International Decade for Action, "Water for Life".2. While-speaking1) To some extent, the existence of World Water Day also implies that human beings cannot live without water. Why? Can you tell how water is being used in our life? Give some examples.－electricity, agriculture, home use, industry, transport, entertainment, etc.2) Look at the first picture (“electricity”) in the text book and talk about it.The water is being used to generate electricity. Building up behind a high dam, water accumulates potential energy (势能). This is transformed into mechanical energy when the water rushes down. It is a good way to use water because water is renewable green energy. It will never run out if only we use it properly and generating electricity by using water is a better way to protect the environment than others. However, it takes a great sum of money and a long period of time to build a dam and prepare all the required equipment. Since nowadays electricity has already been an indispensable part of our life, most people benefit from using water in this way.3) Group work. Divide students into several groups with six in each. Each one takes charge ofone picture. When discussing each picture, please think about the following questions:✧How is water being used?✧What property of water enables it to be used in this way?✧Why do we use water in this way?✧Who benefits from using water in this way?✧Is this a good way to use water?✧What are some disadvantages of using water in this way?4) Pair work. Each six-member group can be divided into three smaller ones with two in each. Make a dialogue on the basis of the results about your topics we reach, using following useful expressions:✧The water is being used to / for … We should / could …✧What will we do if …? If we …, we can …✧It would be better to …Can you think of a better way?3. Post-speaking1) Just now we’ve talked about six main ways of using water and their disadvantages as well as advantages. Here I have something more for you.① Read following short passage by yourself.No matter who we are, where we are, or what we do, we are all dependent on water. It is the source of all life and we need it every day. But with the world's growing population and fast developing economies, the earth's water reserves are drying up fast.As many as 7 billion people throughout the world could face a water shortage by 2050 if the present situation continues. By then, the global population is expected to reach 9.3 billion. Many big cities, including Beijing, Shanghai and Tianjin, will suffer severe water shortages.This alarming situation was shown in a United Nations (UN) report just ahead of World Water Day, which falls on March 22.②Watch a flash “A prediction for water”2) Q: What information have you got from the passage and flash?－Water is very important to each of us. We must try our best to save and protect our precious water; otherwise, we will suffer a lot and even bring disasters upon ourselves.3) Q: How can we save and protect water in our daily life?Take home use for example,➢Reduce faucet flow. Avoid letting the water run when brushing teeth, washing dishes, and shaving etc.➢Reduce shower flow. Install a water-efficient shower head and spend 2 minutes less in the shower.➢Replace aging toilets and clothes washers with high efficiency models. Take advantage of City rebates offered for low-flow and Wash Wise models.➢Repair leaks. Find and fix faucet and toilet leaks.➢Use natural lawn & garden care practices. Dig compost into soil to increase water retention and apply mulch around plants to avoid evaporation.➢Reduce outdoor water use. Use a commercial car wash that recycles water. Sweep the driveway instead of hosing it off.➢We ourselves should have a strong sense of preserving water and tell others to protect it too.。
高二英语下册unit13学案
第13单元学案语言知识纲要1．benefit from 2．cover…with 3．turn…upside down 4．fill…with 5．come up with 6．make notes of 7．put an ice cube in each glass 8．transport 9．call in 10．range from…all the way to…11．that is 12．break down 13．become available to 14．take advantage of 15．do the work 16．be sensitive to 17．absorb / be absorbed in 18．give off 19．a variety of 20．decrease 21．float 22．create a stable environment 23．keep keep the the the temperature temperature temperature of of of the the the earth earth steady 24．add energy to the ecosystems 25．provide energy for the ecosystems 26．provide both recreation and education for human beings 27．contribute to…28．have a relatively high / low freezing point 29．have a relatively high / low density 30．the the relationship relationship relationship between between between mass mass mass and and volume 重点知识点归纳1．benefit [vt]对……有益，得益于sth~sb=sth do good to sb eg. This is an invention that benefits mankind. [vi]~from / by sth 从……受益eg. Mankind benefits from the invention in many ways. [n.] be of benefit to…对…有益利益，常见搭配利益，常见搭配 for the benefit of…为了…的利益to one’s benefit对某人有益对某人有益get benefit from…从…中受益eg. Morning exercise your health. She does all this the people. The new policy will stabilize the prices of oil _________________. Exercises: 完成句子完成句子①The experience learned from work （对我有益）. ②Y our learning method is （对每个学生都有益）. ③The book was boring. It wasn’t to me. A．benefit B．benefited C．of little benefit D．of much benefit 2．transport [un] 运输；运送运输；运送eg. Modern means of transport enable us to move more easily. The transport of coal is usually by rail. vt→运输；运送→运输；运送eg. A bus transported us from the airport to the city of Chengde. It took all day to transport the disaster relief materials to the flooded areas. 3．range [n] 范围、山脉、生长地带范围、山脉、生长地带①Though this factory in Shenzhen is small, it puts out a large range of products. ②Y ou will find there are many wild plants along the mountain range. ③What’s the range of the elephant in Asia?1 2 v. 变化，变动，从……到……不等①Prices ranged from 5 dollars to 10 dollars. = Prices ranged . ②Guo Moruo ranges among the greatest poets in modern China. ③The discussion ranged over various problems. Exercises: ①This undersea exploration will cover a large part of China’s coastal areas, from East China Sea to South China Sea. A ．ranges B ．to range C ．ranging D ．ranged ②The temperature （在15到35摄氏度之间变化）. （年龄范围）is from six months to twelve years. His studies （涉及好几个学科）. China （位列面积最大的国家之一）. 4．take advantage of 对……加以利用 / make use of eg: We should take advantage of all educational opportunities. They take full advantage of the school library to educate students. ※have gain an advantage over 胜过……，取得比……更有利的地位win to one’s advantage 对……有利 eg: Y ao Ming has an advantage over others in playing basketball.The situation is getting better, to our advantage. 反→disadvantage [n.]不利，不利条件不利，不利条件at a disadvantage 处于不利地位处于不利地位to one’s disadvantage 对某人不利对某人不利put sb at a disadvantage eg: Her poor health put her at a ~ in the journey. Her height will be very much to her ~ if she wants to be a dancer. Exercises: 完成句子完成句子①His inability to speak English （将使他在参加国际会议时处于不利地位）. ② （我的同桌优于我）in learning physics. ③He always （很好地利用他的业余时间）. The young man （利用了我们的善良）to get much more help. ④The The students students students who who who have have have poor poor poor memories memories （处于劣势）in in learning learning learning a a foreign language. 5．decrease [v.]变小、减少变小、减少eg:①The doctor advised you to decrease the dose of the medicine as you feel better. ②The number of traffic accidents has decreased by 10% this year. ③The decided to decrease our wages to one thousand yuan a month. [n.]减少减少①The demand for Chinese tea is on the decrease. ②A big decrease in sales caused the store to close. ③There has been a decrease in our imports this year. Exercises: 完成句子完成句子①Many countries in the west enjoy （人口正逐渐减少）. ②The company is trying to （降低生产和管理成本）. ③In China the deaths of AIDS are （在减少）year by year. ④The population of tigers in that country （减少了10%）. 6．absorb [v .] 吸收，吸取，吸引；理解，使全神贯注吸收，吸取，吸引；理解，使全神贯注eg: Black cloth absorbs light. 3 Plants absorb nutrients from the soil. The imported English book absorbs his attention. Did you absorb everything the professor said? The old man was absorbed in his own work. She was completely absorbed in writing a letter when I entered. Exercises: ①When When I I I opened opened opened the the the door, door, door, I I I found found found my my my son son son sitting sitting sitting in in in his his his chair, chair, chair, completely completely a magazine. A ．absorbing in B ．absorbed in C ．absorbing to D ．absorbed by ②完成句子②完成句子The medicine he took （很快被吸收）. Plants are of benefit to the environment by （吸收噪音）. He is （如此全神贯注地工作）that he forgot to have a rest. 7．give off 释放，放出释放，放出eg: The cooker in the kitchen is giving a funny smell off. The sun give off great heat and light.※ give out 分发；发出（气味，热）等；用完，耗尽分发；发出（气味，热）等；用完，耗尽The teacher gave out the examination papers at the beginning of the class. The radiator is giving out a lot of heat. The enemy’s supplies began to give out.想一想：give in / give up / give away / give back 8．sensitive [adj.]敏感的；灵敏的敏感的；灵敏的 be ~ to 对……敏感对……敏感 / be ~ to（about ）对……在乎/介意介意eg: His ears are highly sensitive to any unusual sound in the machine. A writer mustn’t be too sensitive to criticism.Some students are especially sensitive about making mistakes. ※ make sense 有意义，讲得通有意义，讲得通make sense of 明白，理解明白，理解in no sense 绝非绝非in a sense 就某种意义来说就某种意义来说eg:①What you said a t the class meeting doesn’t make sense.②His diary was so badly written that I couldn’t make sense of it.Exercises: 完成句子完成句子①My legs （对温度变化很敏感）. ②Most girls （对自己的相貌很在乎）. ③China is （决不软弱）in attacking terrorism. ④ （从某种意义上来说）, China is still a very backward country. ⑤ （有意义）to play online games ace the time? 9. entertainment [u.]娱乐，招待娱乐，招待娱乐，招待 eg: the entertainment business. A cinema is a place of entertainment. The city offers all kinds of entertainment for young and old. The hotel is famous for its good entertainment. [v.]→ entertain (vt/ vi) ①请客，招待①请客，招待①请客，招待 eg: I don’t entertain often.My wife entertained them to dinner / as honoured guests. ②逗乐，使开心②逗乐，使开心Can you entertain the child for an hour while I make supper. Father entertained us with stories and jokes when we were young. 10．property [C.]特性，性质特性，性质This plant has the property of healing burns. 常用表达： A常用表达：There is a relationship between AThe relation (of A) to B. ①②She I the president.④“What eg: Wood floats on water. Clouds were floating across the blue sky. They floated the logs down the river. The sight floated before my eyes. Einstein studied the relation of energy and mass. eg: a mass of masses of Exercise: I have = the majority of …大部分，大多数eg: My favorite recreation is chess. Gardening is a kind of recreation. The Water World Recreation Center has many attractions. Ranging from simple swimming pools to exciting water thrill rides. trust sb/ sth eg: YI trust (that) you will enjoy your trip. Y。
高二英语教案：新教材高二英语unit13全单元分课时教案
Unit 13 The Properties of WaterTeaching goals:1.Talk about water and the ocean2.Practice communicative skills3.Review Modal Verbs4.Write an explanation paragraphTeaching Plan: (Six Periods)1st period: Warming-up and Reading (1)2nd period: Reading (2)3rd period: post-reading and Listening (SB)4th period: Integrating Skills (SB)5th period: Speaking6th period: Grammar and Language StudyPeriod 1 Warming up & Reading (I)Teaching goals:1.To get the Ss to understand the main properties of water by connecting themwith some common phenomena and learning to explain the phenomena.2.To enable them to be aware of the importance of water, making good use ofwater in a proper way and protecting water resources.Important points in teaching:Words: benefit, available, pure, mass, float, absorb, release, stable, bottom, habitat, dissolve, property.Phrases: b enefit from, range from… to …., all the way, be made up of, that is, freezing point, break down, mix with, be measured in, take advantage of,keep…steady, manage to, be sensitive to, up to.Structures: whatever…., ….., that is,…..Teaching procedures:Step1: Lead inRead a short poem and guess its name: A letter from _______. (Water) Dear User,Shame to you all, the Ignorant,I am your lifeBut you seem not to value meGive me all the respectFor in me is eternal lifeIf you continue abusing meSurely, all forms of life will wither awayHave you ever imagined,Life without me?I tell you, it will be unbearableThink twiceFor every drop counts...Qs:1) What does “Dear user” here refer to?2)What does it talk to its users?3)On which planet does it exist? －On the earth, which is also called thewater planet.4)Do you know why it is called “The water planet”？－Because about three quarters of the earth is covered by water.Step2:Pair work: Collect as many words as possible related to water. Qs:?How much do you know about water??Is all water fresh or salty?Step3: Talk about the properties of water.1. Pair workT: Water is around us and inside us. We can ’t go without water. Qs:?Why is water so important to living things??Can you point out some of its properties or characteristics?Suggested vocabulary :It's colorless, tasteless, odorless and universal dissolvent. It feels wet;It exists in three forms: liquid, solid, gas, and is cycled through the water cycle; It can absorb a large amount of heat; It sticks together into beads or drops;It's part of every living organism on the planet; etc.2. Group workLearn more about water ’s properties by doing some simple experiments and learn to describe an experiment.What property of water does each of the four experiments illustrate? What causes this phenomenon?What ’s this phenomenon related to?①Experiment 1 shows how air pressure causes a piece of thick paper to cling to an upturned glass of water.②Experiment 2 illustrates how substances with different density behave when placed in the same container.③Experiment 3 is an example of how water dissolves substances and objects.④Experiment 4 illustrates some of the differences between salt water and fresh water.3. T:What other properties of water do you know about?What causes the following phenomena? Can you explain?Propertieswate①We can get a lot of nutrients by drinking water and having soup.②Wood floats on water while iron sinks.③The coastal areas are often neither too hot nor too cold.④Why can some living things live at the bottom of the ocean where there is no sunshine?(If these questions are too difficult) Try asking questions about the properties of water and then giveanswers to them.Step4: Pre-readingLook at the titles in the text below. Do not read the whole text. Pick out the subjectof each paragraph. Use the structures below to make six questions related to thesubjects.What is/ are ________?What does _________ look like?What are different parts of ______?What can ________ be compared to?How does _______ work?What are some examples of ________?1.Skim to find the words and phrases which describe the properties of water in thereading text.2.Scan t o Find out some basic facts about life in the oceans.Life on earth began in the oceans about three billion years ago;99% of the living space on earth is in the oceans;There are about five million (known) species in the oceans;Life in the oceans ranges from tiny plankton to giant whales.Step5: Homework1．Read the text carefully and find out the detailed information about water properties.2．Think as many examples as possible to illustrate water properties.Period 2 Reading (Ⅱ)Teaching steps:I. RevisionT: Yesterday you were required to ask more questions about water’s properties and find out the detailed information about water properties as well. So now let’shave a little quiz about theproperties of water.True of false questions:1)Water is a liquid at room temperature, and it has a relatively high freezing point.2)The reason why water can dissolve most substances on earth is that water has high heatcapacity.3)Like all the other substances, water gets smaller (contract) when it freezes.4)Pure water has a higher freezing point and lighter than salt water.5)The salinity of the earth’s oceans is about 3.5%.6)When water freezes, its density increases.7)Other recourses such as oil, gas, gold etc is as precious as a drop of rain.(TFFTT FF)II. While-reading1.As we all know, Charles Darwin is famous for his “The Origin of Species”. (According to hitheory of evolution)Qs: 1) Was there any life on the earth billions of years ago?2) If any, what was the original life like at that time?3) Where did it live? －In the deep blue seas.4) How does the world take its shape, which is quite different from what it used to be,especially those various organisms? －Billions of years’ natural selection.2．It is said that 99% of the living space on earth is in the oceans.Qs: 1) What does this fact result in? －Marine life is incredibly rich and varied.2) Can you give some specific numbers or examples?－There are about five million species in the oceans. They range from the tiniest plantsall the way up to giants (e.g. sharks and whales).3) What does this fact imply? Do you agree?－Water is an excellent medium for life.4) Why do you agree that water is an excellent medium for life? (Based on commonknowledge)?Water is a liquid at room temperature and has a relatively high freezing point;?All living creatures need food to survive, but on many occasions the nutrients becomeavailable to living things only when they are dissolved by water.溶解性).3．So we know that one of water’s properties is its dissolvability(Qs: 1) Do you know what gives water such a unique property?－The chemical structure of water.2) What does the water molecule look like?－A water molecule consists of two hydrogen atoms and one oxygen atom. The twohydrogen atoms are bonded to one oxygen atom to form a 'V' shape. The two hydrogenatoms form a polar molecule, that is, one with a slightly positive end and one with aslightly negative end.unique3) Can you give some other examples which are also resulted from water’schemical structure?－Plants can pull water up their roots via a capillary(毛细管) process;－We can get a lot of nutrients by drinking soup.That’s water’s another property－dissolvability.4. Since water is such a universal solvent, it can dissolve just about anything including many gasesand solids. As a result, there is sea water.－about 3.5%.Qs: 1) Do you know the salinity of the earth’s oceans?2) What does it mean?3) Have you ever noticed such a phenomenon that in winter water in some containers orsmall rivers often freezes while that in seas not? Can you explain it?－The salinity of sea water can affect the freezing point of water. Sea water has a lower afreezing point, so even when the temperature of sea water falls below 0℃， sea water isstill liquid.5. However, no matter whether it is sea water or pure water, “wood floats on water while ironsinks” always works. How do you explain that? What property of water is this?－If a substance has a lower density than water does, it will float on water; Otherwise, it willsink.Qs:1) What is density? And what’s the density of pure water?－Density is the relationship between mass and volume and is measured in kilos per cubicmeter (kg/m3). The density of water is 1,000kg/m3.2) Does it also go for the phenomenon that Ice looks larger than water of equal mass?－Yes. Water’s density decreases when it turns to ice, so its volume increases.3) Does all the water in the same river or ocean have equal density? Tell your reasons.—No. Changes in salinity and temperature affect water’s density. Cold water of highsalinity usually is most dense and will tend to sink to the bottom of the ocean.6. Qs: 1) What do different densities in the ocean result in?－Dense water sinks and less dense water is pushed to the surface. Thus water in the ocean is always moving.2) What phenomena can this result help us explain? Please give examples. (If necessary,give students some hints such as showing a picture etc.)?Ocean motion helps move nutrients around and adds energy to the marineecosystems.?Different marine creatures live in different levels of the ocean. (Because of the foodsthey need, sunshine etc.)7. Read following statement and think what conclusion you can draw? Or what property does itrefer to?It is said that a man of 60kg loses about 1L water through breath and skin evaporation (皮肤蒸发) every day. In other words, 539kcal heat is released in these two ways. If so much heatwere kept in human body, it would raise body temperature by 9℃.Can you imagine theresult?－Water has a relatively high heat capacity and can accommodate the climate automatically.It can absorb and release a lot of heat without big changes in its temperature, thus creating astable environment.8. Here are some more familiar phenomena.What property of water is each of them related to??The coastal areas are often neither too hot nor too cold. (Water’s high heat capacity) ?Ice floats on water. (Density)?When the sea water in a container is evaporated (蒸发), there will be some salt left.(Dissolvability)?Irrigate in winter can help raise the soil temperature. (Water’s high heat capacity) ?People swimming in the Dead Sea float; they can even read a paper while lying on theirback in the water. (salinity and density)IV. Homework1.Try to think as many examples as possible to show that water is made use of to bring benefitto human beings.Period 3 Post-reading & ListeningTeaching goals:1.To get students have a better understanding of water.2.To learn some new words and sentence structures.Teaching procedures:Part one Post-readingI. Better understand the properties of water1. “Where there is water, there is life!” Can you use some facts to illustrate it?－Water is a medium for life.So far as we know, life only exists on earth, because there is water. Etc.2. Our planet is a water planet of which two thirds of its surface is covered by water. Whatour body is also mainly composed of water. Do you know following figures which show how muchwater there is in parts of our body? 60%, 70%, 82%, 90%?Up to _____ of the human body is water.?______ of the brain is composed of water.?______ blood is made up of water.?The lungs are nearly _____ water.3. Water is the source of life. That’s why water is an excellent medium for life. And you know all this is because of water’s unique properties.II. Revision on the properties of water1. What are the properties of water??Water is polar.?Water is liquid at room temperature.?Water has a relatively high freezing point.?Water has density 1,000 kg/m3.?Water has high heat capacity.?…2. What causes water to have such unique properties?－It’s molecule form / chemical structure.3. What is water molecule like??Chemical structure: two hydrogen atoms and one oxygen atom.?Different parts of it: a slightly positive end and a slightly negative end, so it is polar.?The function of it: it causes water to be able to dissolve both solids and gases, and that why water can break down nutrients quickly.4. Do pure water and salt water have the same chemical structure? Does pure water havesalinity?Qs: 1) What’s salinity?2) What is sea / salt water? － A mixture of pure water, dissolved gases and solids.3) How does salinity affect water?4) How does it affect water’s weight and freezing point?－The higher salinity water has, the heavier the water is.The higher salinity is, the lower the freezing point of water is.5. Salinity also has something to do with the density of water. The higher salinity is, the higherdensity of water is.Qs: 1) What is density?2) How is density measured?3) Which is denser, water or oil?4) What will happen when water and oil are in the same container? What does thisphenomenon illustrate?－Oil floats on water. A less dense substance floats on a denser substance.5) Does water in the same ocean have the same density?－No. Denser water sinks and pushes less dense water to the surface.6. That’s why the ocean water will never stop moving. Ocean motionQs: 1) What does ocean motion mean?2) How does ocean motion work?－Denser water sinks and pushes less dense water to the surface.Ocean motion helps move nutrients around and adds energy to the marine ecosystems.3) What causes ocean motion?－Changes in salinity and temperature.7. The temperature of the ocean water always keeps steady, making the ocean a safe andcomfortable habitat. Do you know why?－Water has a relatively high heat capacity.Qs: 1) What is heat capacity?2) What’s the function of heat capacity?－It determines how a substance absorbs and releases heat;It keeps water temperature steady;It keeps the earth’s temperature steady.III. Reflection1. There is a close relationship between some properties of water, for example, salinity, densityand ocean motion. How do they affect each other?2. Suppose you are one of the main properties of water (resolvability, salinity, density …). Youthink you are the most important and have the greatest effect on life. Try to persuade others bydescribing: 1) What you are.2) What affects you.3) What you are made the most of by human beings.Part two ListeningI. Pre-listeningGive a very brief introduction of The Rime of the Ancient Mariner and its author Samuel TaylorColeridge. Here rime is the variant of rhyme.II. While-listening1.Listen to the story (Part 1) and find the information about it. (When, where, who, what?)When: 18th century? (No, not mentioned)Where: on a shipWho: sailors / marinersWhat: One of the sailors kills a bird that brings good luck to the ship, by doing which he hasbrought bad luck and death to the sailors.2.Listen to part 1 for the second time and finish the following true or false questions.1)This poem was written by a British poet Samuel Taylor Coleridge in the 1700s.2)In the poem, one of the sailors kills a fish under the ship.3)It is believed that the animal he kills is one that brings good luck to the ship.4)Other sailors are so frightened and angry that they kill the sailor.5)The sailors are extremely thirsty but they can’t drink the water in the sea, because it istoo dirty.(Keys: TFTFF)3.Listen to part 1 for the third time and answer the following questions:1)Who tells the story in the poem?2)What does one of the sailors do?3)What do you think will happen next?4)Why are the other sailors frightened?4.Listen to part 2 and complete the following sentences.1)Finally they decide that he must die －_______ the mariner who _______ the bird.2)He must _____ _______ it all and will ______ by having to tell the story…3)_____ ______ on the ship, _________ on the ocean, the mariner suffers from__________ and ______.4)His story _____, the ________ mariner says _________ and asks them to learn from his___________.Keys: 1) except, shot; 2) live through, pay 3) Left alone, drifting, loneliness, fear;4) told, ancient, farewell, sufferings5.Listen to part 2 again and answer the following questions:1)What happens to the sailors?2)What happens to the mariner?3)Why is the person telling the story?4)Who is the person actually?II. While-listening1.Reflection: What do you learn from this story?－Everything existing in the world has their own certain values, we should understand and respect them.2.CreationWork with partner and try to come up with a good, scary story like the one about the mariner.Homework1. Preview Integrating Skills “Nature’s Nursery: Estuaries” on page 22Period 4 Integrating SkillsTeaching goals:1.To get students to know what estuaries are and their functions2.To learn to write an explanation paragraphTeaching procedures:I. Lead-inLook at the map of China, answer these questions:1.Can you name the three cities marked on the map? Where are they? (Chongqing, Shanghai,Dalian )I2.How much do you know about them? Is the economy there well-developed or not?3.Which city is the most developed? Why?Now let’s look at this map and then answer the following questions:1.Can you tell what map it is? Where is it?2.Is the water here salty or fresh?3.What’s the place called where river and the ocean meet?II. While-reading1. Skimming1) Find out the definition of estuary.(An estuary is the body of water where a river meets the ocean. Salt water from the ocean andfresh water from the river mix together in an estuary. This mixing of fresh and salt water creates aunique environment filled with life of all kinds---- a zone between the land and sea.)2) What functions of estuaries have been mentioned in the passage?(Great places for nature’s young animals clean our water by absorbing nutrients and pollutants from water coming from inland sources; provide both recreation and education for human beings.)3) Discussion.?What living conditions do you think are needed for nature’s young ones??Do estuaries have such conditions for them?2. Discussion?What living conditions do you think are needed for nature’s young ones??Do estuaries have such conditions for them?3. Scan the passage and answer the following questions.?Why are estuaries such good places for nature’s young ones??What does “density” mean in this passage??How do estuaries affect the water that passes through them??Why are estuaries more sensitive to pollution than other areas??Why are estuaries important to human beings?(Answer to question 1) In estuaries, animals can enjoy all the benefits of the oceans withouthaving to face many of its dangers. Tides provide energy for the ecosystems, but estuaries areprotected from waves and storms by islands, mud or sand. Nutrients from both the land and theocean arrive in estuaries.(Answer to question 2) It means the degree to which an area is filled with things or people.(Answer to question 3) They absorb nutrients and pollutants from water coming inland sources, thus cleaning our water.(Answer to question 4) Because estuaries act as filters(过滤器), many pollutants end up in them.(Answer to question 5) Estuaries provide both recreation and education for human beings.For example, people can fish, swim and have fun on the beach; scientists and students have endless opportunities to study a variety of life in the habitat. Estuaries also contribute to the economy through tourism and fishing.4. Finish the following passage with words from the text.Estuaries are bodies of water along coasts that are ________ (形成) when fresh water from rivers ________ with salt water from the ocean. In estuaries, the fresh river water is blocked from streaming into the open ocean by either surrounding mainland, or islands. This mixing of freshand salt water _______ a unique environment ______ with life of all kinds -- a zone between the land and sea known as an estuary. The estuary gathers and holds a ______ of life--giving nutrients from the land and from the ocean, forming an ecosystem that contains more creaturesthan any other ________ on the earth. Estuaries are also important for human beings. They protect water quality by ________ pollutants from water coming from inland sources. They are centers for _______(娱乐) and education. Estuaries, in short, are treasures.(formed, mixes, creates, filled, variety, habitat, absorbing, entertainment)III. Post-reading DiscussionAs we learn from this passage, many cities which are built around estuaries, like Shanghai, Guangzhou, Ningbo, Shenzhen are very developed. Can you explain why?( They are near Yangtze River Delta, Pearl River Delta…）(Convenient transportation, rich resources…）IV. WritingDo you still remember what we learn about the properties of water? In that passage, the writer introduces the chemical structure and several properties of water to us, such as salinity, density, heat capacity. So from this we know when we are explaining what something is or how things happen, it is important that our explanations should be well organized and easy to understand.Tip oneIf we are describing a process，we’d better explain each step in the order it happens. Tell the readers about the causes and effects and use words like first, second, then, etc to show the order of the steps.?First…?Second…?Third/ Then…?Last…Tip twoIf we are writing about something that has several parts, we should describe each part and explain its function and structure.The following questions may help:What is it? How many parts is it made up of?What’s the structure of each part? How does it work?HomeworkImagine that your science teacher ask you to explain one of the following questions: Why does an ice cube float?What will happen to a piece of metal if you put it in water?Why do so many species live in estuaries?Why have so many cities been built by estuaries?Choose one of the questions and write a passage, using what you know about nature and scienceand what you have learned from this unit.Period 5 SpeakingTeaching aim:1.Get students to talk about the main use of water in our life and their effects.2.Draw students’ attention to the importance of using, saving and protecting our water as well.Teaching procedures:I. Revision1) Can you use your own words to tell us the general idea of the two reading passages?2) What do you learn from our previous classes?－Water is necessary / a must to life. Without water, life, as we all know, would not exist.II. Speaking1. Pre-speaking1) Do you agree with the saying “Without water, life would not exist.”？2) So not only you and I agree with this opinion, but also the United Nations hold the sameview. And that’s why we have World Water Day.Q: Is there anyone who knows when it is? －Mar. 223) Brief background information about World Water Day: World Day for Water is establishedby the United Nations General Assembly's resolution 47/193 of 22 December 1992. It is a uniqueoccasion to remind everybody that concrete efforts to provide clean drinking water and increaseawareness world-wide of the problems and of the solutions, can help make the difference.4) Last year we witnessed some great disasters such as the typhoon “Yunna” and the tsunamWaterin the India Ocean. What a coincidence that the theme for World Water Day 2004 was “and Disaster”. World Water Day 2005 will be guided by the upcoming water decade's theme"Water for Life". It will be the starting day for this International Decade for Action, "Water forLife".2. While-speaking1) To some extent, the existence of World Water Day also implies that human beings cannotlive without water. Why? Can you tell how water is being used in our life? Give some examples.－electricity, agriculture, home use, industry, transport, entertainment, etc.2) Look at the first picture (“electricity”) in the textbook and talk about it.The water is being used to generate electricity. Building up behind a high dam, wateraccumulates potential energy (势能). This is transformed into mechanical energy when the waterrushes down. It is a good way to use water because water is renewable green energy. It will neverrun out if only we use it properly and generating electricity by using water is a better way toprotect the environment than others. However, it takes a great sum of money and a long periodof time to build a dam and prepare all the required equipment. Since nowadays electricity hasalready been an indispensable part of our life, most people benefit from using water in this way.3) Group work. Divide students into several groups with six in each. Each one takes charge ofone picture. When discussing each picture, please think about the following questions:How is water being used?What property of water enables it to be used in this way?Why do we use water in this way?Who benefits from using water in this way?Is this a good way to use water?What are some disadvantages of using water in this way?4) Pair work. Each six-member group can be divided into three smaller ones with two in each.Make a dialogue on the basis of the results about your topics we reach, using following usefulexpressions:W e should / could …The water is being used to / for … What will we do if …? If we …, we can …It would be better to …Can you think of a better way?3. Post-speaking1) Just now we’ve talked about six main ways of using water and their disadvantages as well asadvantages. Here I have something more for you.① Read following short passage by yourself.No matter who we are, where we are, or what we do, we are all dependent on water. It isthe source of all life and we need it every day. But with the world's growing population and fastdeveloping economies, the earth's water reserves are drying up fast.As many as 7 billion people throughout the world could face a water shortage by 2050 if thepresent situation continues. By then, the global population is expected to reach 9.3 billion. Manybig cities, including Beijing, Shanghai and Tianjin, will suffer severe water shortages.This alarming situation was shown in a United Nations (UN) report just ahead of WorldWater Day, which falls on March 22.② Watch a flash “A prediction for water”2) Q: What information have you got from the passage and flash?－Water is very important to each of us. We must try our best to save and protect ourprecious water; otherwise, we will suffer a lot and even bring disasters upon ourselves.3) Q: How can we save and protect water in our daily life?Take home use for example,?Reduce faucet flow. Avoid letting the water run when brushing teeth, washing dishes, andshaving etc.?Reduce shower flow. Install a water-efficient shower head and spend 2 minutes less in the shower.?Replace aging toilets and clothes washers with high efficiency models. Take advantage of City rebates offered for low-flow and Wash Wise models.?Repair leaks. Find and fix faucet and toilet leaks.?Use natural lawn & garden care practices. Dig compost into soil to increase water retentionand apply mulch around plants to avoid evaporation.?Reduce outdoor water use. Use a commercial car wash that recycles water. Sweep the driveway instead of hosing it off.?We ourselves should have a strong sense of preserving water and tell others to protect ittoo.?Start from the little things right under our noses. For example, don’t litter or pour rubbish into rivers at will.。
高二英语学案 Unit13 Lesson3
Unit13 Lesson3 (reading)张xxLearning Aims:1. 通过自主学习，，学会根据阅读理解的题型和文章类型，总结应试策略，并能学以致用。
2.通过合作探究，掌握重点单词短语和句式并学以致用3. 激情投入，体验收获的快乐Learning Procedures:Step1.Lead-inStep2. Self-study(Reading)Task1. Read the dialogue and choose the best answers.1. The dialogue is about ______.A. making guesses about peopleB. a French tutor and her studentsC. two missing studentsD. some students going exploring2. From the dialogue we have learned that ______.A. the two students disappeared 3days agoB. the French tutor know where they areC. people found them in a cottageD. it’s a real relief when they’re found3. The dialogue make various guesses EXCEPT that ______.A. they must be frightenedB. one of them might be injuredC. they might have some food to eatD. they might have died from lack of waterTask2.Key phrases1.____________ 流下，淌下2.___________ 拥抱某人3.___________听说关于......的情况4.since then _________5．get lost_________ 6.__________ 把......同......分离开7.________落后，掉队8.__________ 走错路9. On one’s own __________ 10.at the moment_________Step3.Cooperation and practiceTaskI.小组合作，完成每一个知识点。
高二英语Unit13 Writing 新课标 人教版
高二英语Unit13 Writing 新课标人教版一、说明文文体：说明文是以说明为主要表达方式用来说明事物，阐明事理的一种文体。
它通过揭示概念来说明事物的特征、本质及其规律性，给人准确的科学知识或正确思想。
一般可分为实体事物说明和抽象事物说明两大类，词典、教材、论文、实验报告、产品说明书、广告、解说词及科学小品等都属于说明文. 内容涉及科学技术，天文地理，环境保护，自然灾害，医疗救护，饮食文化等等。
按写作方法，英语说明文主要分为下面六种类型:1、例证法 illustration例如: Our life today depends very much on energy. For example, machines have made our life easier than it used to be. The machines use energy， and energy is needed for heating, lighting, communications, carrying goods-everything. Factories use a great deal of energy to make the things that we use and buy and sell.这是用具体例子来说明人或事物的特征、本质及其规律的方法，所用例子必须有代表性、典型性，能体现人或事物的本质特征。
这是用特殊来说明一般的方法。
通常在主题句后，用 For example 或 For instance 等短语引导出具体的例子。
这段主要是讲能源问题。
第一句为主题句，概括地说出“我们目前的生活很大程度上依赖能源”。
接着用举例的方法从三方面说明能源的作用。
2、定义法definition例如: An ideal teacher must have the following characteristics. He should know his subject， but he can make mistakes if he is willing to learn. His personality is as important as his scholarship. An ideal teacher must be enthusiastic. He should be a bit of an actor and he shouldn't be afraid to show his feelings and express his likes and dislikes. An ideal teacher is one who grows, learns, and improves himself along with his students.下定义就是给说明对象一个明确概念。
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2019-2020年高二英语Unit13学案新课标人教版语言知识纲要1．benefit from2．cover…with3．turn…upside down 4．fill…with5．e up with6．make notes of7．put an ice cube in each glass 8．transport9．call in10．range from…all the way to…11．that is12．break down13．bee available to14．take advantage of15．do the work16．be sensitive to17．absorb / be absorbed in 18．give off19．a variety of20．decrease21．float22．create a stable environment23．keep the temperature of the earth steady24．add energy to the ecosystems25．provide energy for the ecosystems26．provide both recreation and education for human beings27．contribute to…28．have a relatively high / low freezing point29．have a relatively high / low density30．the relationship between mass and volume重点知识点归纳1．benefit[vt]对……有益，得益于sth~sb=sth do good to sbeg. This is an invention that benefits mankind.[vi]~from / by sth 从……受益eg. Mankind benefits from the invention in many ways.[n.]be of benefit to…对…有益利益，常见搭配 for the benefit of…为了…的利益to one’s benefit 对某人有益get benefit from…从…中受益eg. Morning exercise your health.She does all this the people.The new policy will stabilize the prices of oil _________________.Exercises: 完成句子①The experience learned from work （对我有益）.②Your learning method is （对每个学生都有益）.③The book was boring. It wasn’t to me.A．benefit B．benefited C．of little benefit D．of much benefit2．transport [un] 运输；运送eg. Modern means of transport enable us to move more easily.The transport of coal is usually by rail.vt→运输；运送eg. A bus transported us from the airport to the city of Chengde.It took all day to transport the disaster relief materials to the flooded areas.3．range[n] 范围、山脉、生长地带①Though this factory in Shenzhen is small, it puts out a large range of products.②You will find there are many wild plants along the mountain range.③What’s the range of the elephant in Asia?v. 变化，变动，从……到……不等①Prices ranged from 5 dollars to 10 dollars.= Prices ranged .②Guo Moruo ranges among the greatest poets in modern China.③The discussion ranged over various problems.Exercises:①This undersea exploration will cover a large part of China’s coastal areas, from East China Sea to South China Sea.A．ranges B．to range C．ranging D．ranged②The temperature （在15到35摄氏度之间变化）.（年龄范围）is from six months to twelve years.His studies （涉及好几个学科）.China （位列面积最大的国家之一）.4．take advantage of 对……加以利用 / make use ofeg: We should take advantage of all educational opportunities.They take full advantage of the school library to educate students.※ havegain an advantage over 胜过……，取得比……更有利的地位winto one’s advantage 对……有利eg: Yao Ming has an advantage over others in playing basketball.The situation is getting better, to our advantage.反→disadvantage [n.]不利，不利条件at a disadvantage 处于不利地位to one’s disadvantage对某人不利put sb at a disadvantageeg: Her poor health put her at a ~ in the journey.Her height will be very much to her ~ if she wants to be a dancer.Exercises: 完成句子①His inability to speak English （将使他在参加国际会议时处于不利地位）.②（我的同桌优于我）in learning physics.③He always （很好地利用他的业余时间）.The young man （利用了我们的善良）to get much more help.④The students who have poor memories （处于劣势）in learning a foreign language.5．decrease[v.]变小、减少eg:①The doctor advised you to decrease the dose of the medicine as you feel better.②The number of traffic accidents has decreased by 10% this year.③The decided to decrease our wages to one thousand yuan a month.[n.]减少①The demand for Chinese tea is on the decrease.②A big decrease in sales caused the store to close.③There has been a decrease in our imports this year.Exercises: 完成句子①Many countries in the west enjoy （人口正逐渐减少）.②The pany is trying to （降低生产和管理成本）.③In China the deaths of AIDS are （在减少）year by year.④The population of tigers in that country （减少了10%）.6．absorb [v.] 吸收，吸取，吸引；理解，使全神贯注eg: Black cloth absorbs light.Plants absorb nutrients from the soil.The imported English book absorbs his attention.Did you absorb everything the professor said?The old man was absorbed in his own work.She was pletely absorbed in writing a letter when I entered.Exercises:①When I opened the door, I found my son sitting in his chair, pletelya magazine.A．absorbing in B．absorbed in C．absorbing to D．absorbed by②完成句子The medicine he took （很快被吸收）.Plants are of benefit to the environment by （吸收噪音）.He is （如此全神贯注地工作）that he forgot to havea rest.7．give off释放，放出eg: The cooker in the kitchen is giving a funny smell off.The sun give off great heat and light.※ give out 分发；发出（气味，热）等；用完，耗尽The teacher gave out the examination papers at the beginning of the class.The radiator is giving out a lot of heat.The enemy’s supplies began to give out.想一想：give in / give up / give away / give back8．sensitive [adj.]敏感的；灵敏的 be ~ to 对……敏感 / be ~ to（about）对……在乎/介意eg: His ears are highly sensitive to any unusual sound in the machine.A writer mustn’t be too sensitive to criticism.Some students are especially sensitive about making mistakes.※ make sense 有意义，讲得通make sense of明白，理解in no sense绝非in a sense就某种意义来说eg:①What you said at the class meeting doesn’t make sense.②His diary was so badly written that I couldn’t make sense of it.Exercises: 完成句子①My legs （对温度变化很敏感）.②Most girls （对自己的相貌很在乎）.③China is （决不软弱）in attacking terrorism.④（从某种意义上来说）, China is still a very backward country.⑤（有意义）to play online games ace the time?9. entertainment [u.]娱乐，招待eg: the entertainment business.A cinema is a place of entertainment.The city offers all kinds of entertainment for young and old.The hotel is famous for its good entertainment.[v.]→ entertain (vt/ vi) ①请客，招待eg: I don’t entertain often.My wife entertained them to dinner / as honoured guests.②逗乐，使开心Can you entertain the child for an hour while I make supper.Father entertained us with stories and jokes when we were young. 10．property[C.]特性，性质This plant has the property of healing burns.Soap has the property of removing dirt.Steal is a metal with the property of great strength.[u.]财产，资产The pany is his private property.The police found some stolen property hidden in the thief’s house. Exercise: 译一译1.爱护公物2.水有独特的性质11．relationship n. 关系，联系，亲属关系常用表达： A have a good/ close/ lasting/ business/ working relationshipwith B.There is a relationship between A and B.The relation (of A) to B.eg: ① the moon and the tides.（月亮与潮汐有关系）②She her students.（她学生关系很好）③I the president.（我与总裁建立了良好关系）④“What Alice?”“She is my wife.”（你与爱丽丝是什么关系）12．float (vt/ vi) （使）漂浮，浮现eg: Wood floats on water.Clouds were floating across the blue sky.They floated the logs down the river.The sight floated before my eyes.译一译：1．香飘满屋 2．他浮想联翩13．mass n.质量；团，块；大量Einstein studied the relation of energy and mass.There were great masses of clouds in the sky.Someone left a mass of rock in the yard.→ a mass of…/ masses of…大量的，许多eg: a mass of letters / books/ moneymasses ofExercise: I have （大量工作要做）.→ the mass of…= the majority of …大部分，大多数eg: The mass of modern people are influenced by television.14．recreation [u/c] 业余消遣，娱乐（方式）；（身心）放松eg: My favorite recreation is chess.Gardening is a kind of recreation.The Water World Recreation Center has many attractions.Ranging from simple swimming pools to exciting water thrill rides.15．trust (vt/ un) 信赖；信任，确信，认为；指望trust sb/ sth = have/ place trust in ……trust sb / sth to do = depend on sb/ sth to do……trust that……eg: You shouldn’t trust the man.I trust (that) you will enjoy your trip.You can’t trust the buses to run on time.（v phr）→ trust in = have confidence in …… (n phr)→ have/ place / put trust in……译一译：1．你要相信自己的判断。