Module6_Unit4_Global_Warming---Reading
高中英语(人教版)选修六 Unit 4 Global warming-Reading 教案
Unit4. The Earth Is Becoming Warmer-But Does it Matter 教案Teaching Aims:1.Improve the students’ reading ability2.Having concept of “greenhouse gases”,”greenhouse effect””global warming”3.Know scientists’ attitude towards “global warming”4.Can write down the advantages as well as disadvantages of “global warming” and can express them to the whole classTeaching Important and Difficult Points:1.How to Improve the students’ reading ability2.How to guide students to write and to express his or her attitude in own wordsEmotional Aims:Enable the students to know the importance of protecting earthMedia preparation:Blackboards, PPT, video player, Mp3 playerTeaching Process:Step1. GreetingsGreet the whole classStep2. Lead-inShow three groups of pictures, which are about shallow understanding of “global warming”, and let them choose the right picture of each group.eg.Which of the following picture doesn’t show the phenomenon?Step3. Fast-ReadingMatch: the main idea of each paragraph. (Divided them into seven groups,each group answer one paragraph.)Step4. Intensive Reading1)Analyze paragraph1 and paragraph2 in a way of graph1. Answer two questions.What is this graph about? What has caused this phenomenon?2) Listen to paragraph3 and then discuss questions in group to choose right answer.Greenhouse gases refer to ____.A. carbon dioxideB. the burning of fossil fuelsC. byproducts of the burning of fossil fuelsD. coal, natural gas and oilGreenhouse effect ____.A. is a natural phenomenonB. happens when there’s too much carbon dioxideC. does great harm to human beingsD. makes life for human beings betterSummarize this paragraph in a way of simple drawing.3)Give a graph2, ask one student to analyze the graph2 as the way of graph1. Then combined with Paragraph4 and Paragraph5, judge T or F. The carbon dioxide content in the air increased by 70 parts per million from 1957 to 1997.All scientists accept the data in graph 2 except Charles Keeling.4)Read paragraph6 together and summarize the different attitudes towards global warming.Dr.Foster: It would lead to a catastrophe.George Hambly: We should not worry about it.5)Read paragraph7 independently and answer questions.If we start reducing the amount of carbon dioxide and other greenhouse gases, is the climate going to stop?What's the attitude of the author? Positive?Negative or Neutral?6)Summarize the structure of the whole passagePart1 (paragraph1)Part2 (Paragraph2-5)Part3 (Paragraph6)Part4 (Paragraph7)Step 5 WritingWrite down the advantage or disadvantage of global warming in your opinion.Step 6 Play a video to express my view.Step7 HomeworkSurf the Internet for more informationabout global warming.Teaching ReflectGlobal Warming is one of the most important topic we face in this century. Teacher should guide students to focus this topic and do activities to protect our earth.。
Globalwarming-Reading教案(新人教版高中英语选修6unit4)
Global warming-Reading教案(新人教版高中英语选修6 unit 4) Pre-reading1. Questioning and answeringAsk students something about a green house. What is it? What is it for? Could you tell the class in English what you know about a green house?A green house is built of glass to be used for growing plants. The air inside the green house is warm because the glass lets in the sun and keeps it from running away. So the air inside is warm and is good for growing plants throughout the cold seasons.2. Introduces students to the topic of the reading passage and the term “greenhouse gases”.3. Do exercises⑴What is the building made of and what its purpose?⑵What’s greenhouse effect?Teaching aims:To read the text “The earth is becoming warmer—but does it matter” and understand what it says.To make students find out some useful words and expressions. Teaching procedures:Step 1. Read the text (Page26)Answer the following questions.1 what is the purpose of the first paragraph?To introduce the topic.2 what are the diagrams for?To illustrate points by providing evidence.3 what is the purpose of the last paragraph of the article?To reflect on the major theme of the text and to predict what might happen in the future.Step 2. Read again for more detailsTo understand the main idea of the text, we are going to read it once again. Write down the key sentence of each paragraph at the same time.Key sentence of each paragraph:A debate over whether it is human activity that has caused the global warming or whether it is just a natural phenomenon.Many scientists believe people have caused the increase in the earth’s temperature.The increased extra amount of carbon dioxide traps more heat energy causing the global temperature to go up.The levels of carbon dioxide have increased greatly over the last 100 to 150 years.There are some different attitudes towards the causes of this increasein carbon dioxide.Over the next 100 years the amount of warming could be as low as 1 to 1.5 degrees Celsius but it could be as much as 5 degrees Celsius. An increase of five degrees would be a catastrophe.Future warming would cause the sea level to rise by several meters. Some predict any warming will be mild with few bad environmental consequences.More carbon dioxide is a positive thing.No one knows what the effects of global warming will be.Step 3. Listen to the tape and then find out some useful words and expressions.。
人教版新课标 选修六 Book6 Unit4 Global Warming (Reading) 课件
Step6: Watching and discussing
1. What does the video want to tell us?
2. According to what we have learned today, what causes global warming?
3. What should we do about global warming?
What can we do about global warming?
drought
global warming too many
trees are cut down = deforestation
hot ! !
!
Reading (P.26): THE EARTH IS BECOMING WARMER —BUT DOES IT MATTER?
(Para_1_ )
towards global waro _5 )
b. whether people should do sth. about global warming
Part 3 (Para_6_ )
c. an introduction of global warming
6.反对……
6. be opposed to
7.增加，聚集 8.继续
7. build up 8. keep on
Step3: Pre-reading
Guess from the title and the two graphs: What may be talked about in the passage? A. The cause of the global warming
Unit 4 Global Warming
人教必修6Unit4 Global Warming Reading
全球变暖正是人类活动导致而成的， 而不是随意的自然现象。
How has human activity caused this global warming?
Look at the two graphs .
Graph 1: Graph 2:
1957
315
From the two graphs, can you find some relationship between them?
and think about what’s your attitude towards global warming.
Prepare for the debate about
“Should we do something about global warming?”
Negative effects
1. cause the sea level to rise 2. severe storms 3. floods 4. droughts 5. famines 6. the spread of diseases 7. disappearance of species
1. make plants grow quicker 2. crops will produce more 3. a greater range of animals 4. make life better
Game: Run a choo-choo train
Group1
Group2
Group3
Part2
Paragraphs 2&5
Paragraph 6
Part3 Part4
Paragraph 7
Main idea of the text
Book6英语必修六-Unit4-Global-warming-Reading-精品课件
7. go up 1) 上升 Prices have gone up again. 物价又上涨了。
2) 被建造起来 New factories are going up everywhere. 到处在兴建新工厂。
3) 被焚毁 The whole building went up in flames. 整幢楼被焚毁了。
4. The rise in carbon dioxide is causing T
a steady increase in global warming. 5. George Hambley believes that global
warming will do good rather than harm
2. Everyone believes that global warming is
caused by the activities of humans. T
3. Janice Foster believes that she can measure
the future global rise in temperature. F
A. which B. that C. what D. whether
4. phenomenon n. 现象; 奇迹; 罕见的人才 或事物 pl. phenomena
eg: 雨雪是天气现象。
Rain and snow are phenomena of the weather.
eg: 贝多芬是音乐家中的天才。
(2-5)
1. __h__u_m_a_n__a_c_ti_v_i_ty_____ 2. __t_h_e__b_u_r_n_in_g__o_f_f_o_s_si_l_f_u_e_ls____
新人教选修6-Unit4-Global-warming-Reading[阅读课件]
![新人教选修6-Unit4-Global-warming-Reading[阅读课件]](https://img.taocdn.com/s3/m/fd1114f64afe04a1b071de7d.png)
10.It is clear what the effects of global warming will be. ( F)
Careful Reading
1.Read the text again and try to get the main idea of the article.
The main idea of the passage: Part 1(Paragraphs 1)
高二英语选修6 Unit4 Global Warming Reading
THE EARTH IS BECOMING WARMER-BUT DOES IT MATTER?
We depend on
energy to do many
things in our daily lives. For example, energy lights our cities and heats our buildings. Make a list of things that use energy in your home, in your school, or any other places you can think of.
uranium Ore (铀矿石)
non-renewable
① What are they? ② What are these buildings made of?
greenhouse / glass
Turn to Pre-reading 1,
③What’s the use? Page 25. A greenhouse is used for_____________, growing plants Read & answer. especially during ____ weather. cold
新人教选修6_Unit4_Global_warmingReading阅读 ppt课件
3. Does he think a person himself can slow down global warming?
Have little effect
4.Does he give up his plan?
No . He still advocate improvements.
新人教选修 6_Unit4_Global_warmingReading
Planting trees Cleaning the rubbish
新人教选修 6_Unit4_Global_warmingReading
electric vehicle bike
running
新人教选修 6_Unit4_Global_warmingReading
×
×
×
新人教选修 6_Unit4_Global_warmingReading
C. Individuals can’t save energy
to slow down global warming.
新人教选修 6_Unit4_Global_warmingReading
So what is Earth Care’s attitudes?
• Individuals can make a difference
√
Group works • Group works to discuss
what else we can do to slow down global warming?
新人教选修 6_Unit4_Global_warmingReading
Wind energy is used as power
➢Which is true according to the
人教版高中英语选修六unit4globalwarming-reading教学课件
Writing
Write down the advantage or disadvange of global warming in your opinion.
Homework
Surf the Internet for more information about global warming.
高中英语课件
madeofcanruohanxing
Reading:
The Earth Is Becoming Warmer-But Does It Matter?
Which of the following picture doesn't show the phenomenon of global warming?
Para.5
E.puzzles about global warming
Para.6
F.different attitudes to global warming
Para.7
G.an introduction to the passsage
Paragraph1 graph about? What has caused this phenomenon? It shows the temperature increase of one degree Farenheit between 1860 to 2000. Human activity.
Para.1
A. the cause of the earth's becoming warmer
Para.2
B.the consequence of burning fossil fuels
Para.3
C.the increase of carbon dioxide
新人教选修6_Unit4_Global_warming-Reading阅读课件
1.A lot of peaple have the sense of doing something against global warming. (T)
2.Earth Care suggest people put up with pollution. (F )
3.you’d better buy things made from new materials. ( F)
• let's make things better. 让我们做得更好。
• Thank you
➢What suggestions does Earth Care give him?
①Turn electrical appliances off when not using them.
②Don’t turn up the heat, put on more clothes.
➢suggestion list
①Turn electrical appliances off when not using them. ②Don’t turn up the heat, put on more clothes.
③Walk or ride a bike, don’t drive. ④Recycle.
fast reading
• Read the passage and get the main idea.
This passage contains two letters, the first letter is written by Ouyang Guang , who asks suggestions from the Earth Care. The second letter is about _s_u_g_g_e__st_io_n__s __ given by the Earth Care.
英语：unit 4 《global warming 》教案-reading(新人教版选修6).doc
英语：Unit 4 《Global Warming 》教案-reading （新人教版选修6）Period 2 Pre-reading, Reading, ComprehendingTeaching Goals:1.To read about global warming.2.To get some idea about the effect of global warming.3.To develop some basic reading skills.Teaching Procedures:Step 1. Warming UpPurpose: To arouse Ss interest in learning about global warming.1. Team workAnswer the questions below:(1) Have you ever seen a greenhouse?(2) How does a greenhouse work?(3) What do you think greenhouse gases do?2. Group workLook at the picture, and ask Ss some questions.T: What is this building made of?S1: It’s made of plastic.T: What’s its purpose?S2: Plants can grow in it when it’s cold outside.T: How does it work?S3: The glass traps the heat from the sun, making the air warm so that plants grow better.Step 2. Pre-readingPurpose: To get Ss to learn about greenhouse gases.1. Group workNow look at the word “GREENHOUSE GASES”. What does it mean?Greenhouse gases (GHG) are gaseous components of the atmosphere thatcontribute to the greenhouse effect .The major natural greenhouse gases are watervapor, which causes about 36-70% of the greenhouse effect on Earth (not includingclouds): carbon dioxide, which causes between 9-26%; and ozone, whichcausesbetween 3-7%(note that it is not really possible to assert that such-and-such a gas causes a certain percentage of the GHE, because the influences of the various gases are not additive .The higher ends of the ranges quoted are for the gas alone ;the lower end ,for the gas counting overlaps).Naturally occurring greenhouse gases include water vapor, carbon dioxide, methane, nitrousoxide, and ozone. Certain human activities, however, add to the levels of most of these naturally occurring gases.Very powerful greenhouse gases that are not naturally occurring include hydrofluorocarbons(HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6), which are generated in avariety of industrial processes.Each greenhouse gas differs in its ability to absorb heat in the atmosphere. HFCs and PFCsare the most heat-absorbent.2. Individual workGet Ss to answer these questions individually. Then let them discuss the answers.(1) Who wrote the magazine article? What is the name of the magazine?(2) What are the names of the three scientists mentioned in the article?(3) What do they think about global warming? Do they agree with one another?(4) What are the two graphs about?(5) What is the main topic of the article?Step 3. Reading1. SkimmingPurpose: To get a brief understanding of the text.Read through the text, preferably the first and the last sentences of each paragraph and write the key sentence of each paragraph.Key sentences of each paragraph:(1) A debate over whether it is human activity that has caused the global warming or whether it is just a naturalphenomenon.(2) Many scientists believe people have caused the increase in the earth’s temperature.(3) The increased extra amount of carbon dioxide traps more heat energy causing the global temperature to go up.(4) The levels of carbon dioxide have increased greatly over the last 100 to 150 years.(5) There are some different attitudes towards the causes of this increase in carbon dioxide.(6) Over the next 100 years the amount of warming could be as low as 1 to 1.5 degrees Celsius but it could be asmuch as 5 degrees Celsius.(7) An increase of five degrees would be a catastrophe.(8) Future warming would cause the sea level to rise by several meters.(9) Some predict any warming will be mild with few bad environmental consequences.(10) More carbon dioxide is a positive thing.(11) No one knows what the effects of global warming will be.2. ScanningPurpose: To get Ss to have some details in the text.Read the article carefully. Are these statements true or false? Write a T for each true sentence and an F for each false sentence.(1) The temperature last century didn’t increase much. ( )(2) Everyone believes that global warming is caused by the activities of humans. ( )(3) Janice Foster believes that burning fossil fuels causes global warming. ( )(4) Natural gas is a greenhouse gas. ( )(5) Carbon dioxide is a byproduct of burning fossil fuels. ( )(6) People accept Charles Keeling ’s data because he took accurate measurements. ( )(7) Flooding could be one of the effects of future global warming. ( )(8) George Hambley believes scientists are just guessing about the effects of global warming.( )(9) Geroge Hambley is worried about the effects of carbon dioxide on plant growth. ( )(10) It is clear what the effects of global warming will be.Suggested Answers:(1) F (2) F (3) T (4) F (5) T (6) T (7) T (8) T (9) F (10) F3. ListeningPurpose: To train Ss listening ability.Listen to the tape and follow it in a low voice.4. Group workSs are divided into four groups. Each group is supposed to read through each part and then discuss them.Part 1 (Paragraph 1)(1)compare 比较● 常见用法：① compare…with… 把…和…比较Compared with him, I am fast.② compare…to… 把…比作…Life is often compared to voyage.(2) come about发生How did it come about? 那事是怎么发生的?● 常见词组：come across 偶遇；碰到come round 恢复知觉，come along 进展；进行come to 涉及；到达；共计come out 公开；问世；出版come to oneself 恢复知觉come up with 想出(4) phenomenon n 现象It is only a social phenomenon, but not a phenomenon of nature.Part 2 (Paragraph 2, 3, 4)(1)fuel n 燃料Don’t leave the engine switched on .It wastes fuel.● 拓展：fuel v 加油；补给燃料The car is being fuelled ready to try to beat the speed record.(2) quantities of大量Large quantities of money have been spent on the bridge.● 拓展：a large quantity of大量的He ate a large quantity of nice.(3) per prep 每; 每一The fruit costs 30 pence per kilo.How much do you earn per week?Part 3 (Paragraph 5,6,7,8,9)(1) data n 资料; 数据We haven’t got enoug h data..(2) result in导致The accident resulted in the death of two passengers.It resulted in success.● 拓展：result from 由于His illness resulted from eating bad food.(3) catastrophe n 突如其来的大灾难；大灾祸The war was a terrible catastrophe in which many people died.(4) climate n 气候We have a mild climate here.(5) consequence n 结果；后果；影响As a consequence of being in hospital, Shelly decided that she wanted to become a nurse.● 常见词组：in consequence 因此，由此in consequence of…由于…的缘故(6) state vt 陈述；说明The busmen have stated that the strike will continue until general agreement is reached about pay and working conditions.(7) range n & v①种类；范围；幅度There is a wide range of temperature.气温变化很大。
Module6 Unit4 Global Warming (说课稿) (新课标版高二英语选修六教案教
Module6 Unit4 Global Warming (说课稿) (新课标版高二英语选修六教案教学设计)Module6 Unit4 Global Warming (说课稿)Period 1 New words and warming-up1. Learning the new words.2. Warming- upT: We depend on energy to do many things in our daily life. Some people even say we could do nothing without energy. Can you tell me what we use energy for?Ss: Energy lights our cities; Energy heats our buildings; Energy entertains us.T: So it seems that energy plays a very important role in the modern world. Then where does all the energy come from? Are they renewable or non-renewable? (课件)3. Discussing (可先阅读再争论)What do you think the current situation of energy around the world?4. ReadingEW 20th TOPIC READING; CULTURE BRIDGE5. DiscussingWhat’s your opinion about greenhouse effect?6. HW Read the new words. Preview the text and finish the reading task in EW 20th.Period 2 Reading1. Pre-readingWhat is the greenhouse made and used for?How does it work?What are the “greenhouse gases”?What do you think greenhouse gases do?2. First-readingGlance quickly at the magazine article and answer the questions on P27 Ex.13. Second-readingRead the text, divide it into 4 parts and try to sum up the main idea.(or EW20th)4. Third-readingFill in the blanks.5. HW Finish P28 Ex 1; EW20th Part1.Period 345 Language studyPeriod 31. Review the text.A. Read the text together.B. Finish the SUMMING UP in EW20th.2. Underline and understand some sentences.3. Learn some language points.4. HW Finish P28 Ex2; EW20th Part2 (1,2)Period 41. Check homework (P28 Ex 1-2)2. Review the language points.3. Go on the language points4. HW Finish EW20th Part 2; Prepare for the dictation.Period 51. Have a dictation.2. Review the language points.3. Finish the language points.4. Check HW (EW20th Part 12)5. HWSentences:There is no doubt that…(EW)Without the “greenhouse effect”, the earth would be about thirty-three degrees Celsius cooler than it is.They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide. (EW)Wordsphrases:1. consume1) 消耗, 消费, 耗尽 He consumed much time and energy in writing this book.The air conditioner consumes a lot of electricity.2) 大吃, 大喝, 吃完, 喝完 He consumed six eggs.Before he died he had consumed a large quantity of alcohol.be consumed with 布满2. subscribe1) vi. 订阅, 订购 I subscribe to English Weekly every year.2) vi. 同意, 赞成I’ve never subscribed to eating food in the classroom.3) vt. 捐助, 签名 Last week each of us subscribed 10 yuan to the Hope Project.I subscribed my name to the document.3. tend4. oppose5. state vt. 陈述, 说明 She stated her opinion.He didn’t state whether the article was true.n. 状态, 国家, 州 In china the railway are owned by the state.She was in a state of shock.n. statement 说明, 声明, 陈述6. glance7. advocate vt. 拥护, 支持, 提倡, 主见They advocate free trade.We advocate keeping the earth from becoming too warm.8. refresh vt. 使恢复, 使振作, 重新斟满The long sleep had refreshed her. Let me refresh your glass.refresh one’s memory 提示, 提示, 使想起He had to refresh his memory by looking at his notes.9. consequence n.1) [C] 结果, 后果 = result The consequence of his leg isa broken leg.His illness is the consequence of overwork.2) [U] 重要性= importance Don’t worry. It’s of n o consequence.in consequence = as a result 结果, 因此 I overslept, and in consequence I was late of school.as a / in consequence of = as a result of 由于……的原因In the consequence of your laziness and rudeness, I’m forced to fire you.consequent adj. 因而引起的, 随之发生的10. range n. 种类, 范围There’s a wide range of ability in the class.There’s a full range of activities for children.It’s difficult to find a house in our price range.11. steady1) adj. 平稳的, 持续的, 稳固的 Is the table steady?The price of milk remains steady.He is making steady progress during this term.2) v. (使) 稳定, (使) 稳固 Stead the ladder for me.Oil price steadied.steadily adv. He is making progress steadily during this term.12. come about 13. quantity of14. go up 上升, 增长, 升起, 被兴建,被建筑Oil price have gone up again.New buildings are going up everywhere.15. result in16. keep on 连续 Keep on until you get to the playground.You keep on making the same mistake.17. on the whole 大体上, 基本上On the whole, I’m satisfied with her progress.His business was, on the whole, successful.文档内容到此结束，欢迎大家下载、修改、丰富并分享给更多有需要的人。
高中英语-Book6 Unit 4 Global Warming reading 用
many catastrophes：
drought flood
typhoon
Desertification
Tsunami sandstorm
glaciers melt 冰川融化
sea level rises 海平面上升
species extinction 物种灭绝
Discussion: Individuals can make a difference.Facing the global warming, what can we do?
1. Who found out the amount of carbon dioxide in the atmosphere from 1957 to 1977? A. Dr. Janice Foster. B. Charles Keeling. C. George Hambley. D. Sophie Armstrong.
(1) Whaitshhausmcaanuascetdivtithyisthgaltohbaaslcaused warming? this global warming…
____H_u_m__a_n_a_c_t_i_v_it_y___________
Part 3 What causes the Greenhouse Effect？
Let us save energy and protect environment together.
1.what's it in the picture? 2.what erergy does it use? 3.whether these erergy are renewable or nonrenewable?
What are the meanings of the two words “renewable” and “non-renewable”?
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Skimming ★ ★ Skim the first paragraph: Who wrote the article? Sophie Armstrong What is the name of the magazine?
Earth Care Tip: In English, some nouns begin with a capital letter(大写字母), such as names of people and places, titles of magazines, newspapers, stories and books, people’s titles(头衔), etc..
Skimming The organization of the article: A title
Introduction Body Conclusion
Skimming
★★★★
Skim the body part(7 paras):
Introduction
Part III(Para4-
6)
What do Dr. Janice Foster and the scientist George Hambley think about the consequences of global warming? Do they agree with one another? Tip: You can know somebody’s opinion through understanding his quotations(引言) or what he said.
Idea-sharing
What will global warming bring to us in your opinion?
(Find out supporting
evidence)
Negative effects
1. cause the sea level to rise 2. severe storms 3. droughts/floods 4. famines 5. the spread of diseases 6. disappearance of species
Read the article carefully and finish exercise 2 on page 27
Further Comprehension 1. What’s the first graph about? It shows the temperature increase of one degree Fahrenheit between 1860 and 2000. 2. What’s the second graph about? It shows the carbon dioxide content in the atmosphere from 1957 to 1997.
Skimming
★★
Skim the title: THE EARTH IS BECOMING WARMER – BUT DOES IT MATTER?
What is the main topic?
A.The earth.
B. Global warming.
C. Becoming warmer doesn’t matter.
Skimming
★★★
Where does this article most probably come from?
A.Newspaper B. Novel C. Magazine
More carbon dioxide is a __________ positive thing, which makes crops produce and will __________ encourage a greater range of __________________ animals.
Part III(Para4-
6)
They don't agree with each other.
Dr. Janice Foster thinks the effects of global warming could be very serious. George Hambley thinks global warming will be mild with few bad environmental consequences.
The different ideas between Dr. Janice Foster & George Hambley
Dr. Janice Foster George Hambley
Carbon dioxide has caused the global temperature to go up __________. An increase of five degrees would be a catastrophe ____________ and could be very serious ______________.
Para. 1
I
Body
II
Conclusion
IV
Para. 2-3 Para. 7
III
Para. 4-6
Scanning ★ ★ ★ ★ Match the main idea of each part:
I II (1) (2-3) II I (2-3) (1)
Group A 3 Ss agree reasons
Group B
Debate
3 Ss disagree reasons
Assignment
Prepare the language points of
this passage and underline the important ones.
Positive effects
Negative effects
1. cause the sea level to rise 2. severe storms 3. droughts/floods 4. famines 5. the spread of diseases 6. disappearance of species
Skimming
What are the names of the three scientists mentioned in the article?
Dr Janice Foster,
Charles Keeling,
George Hambley
something about global warming.
B
B: We shall do
nothing about global warming.
What should we do?
Idea-sharing
We should do nothing about global warming.
Discussion:
The earth is becoming warmer does it matter? If it does, as a student, what should you do about it?
Debate
A
A : We shall doUnit 4源自Global warming
Words study
Nuclear leakage
Due to the greenhouse effect, the earth is becoming warmer and warmer--But does it matter?
III IV (4-6) (7) III IV (4-6) (7)
• Explain how global warming comes about. • Introduce the problem of global warming. • Give a warning and raise a question for the readers to think over. • Two different attitudes among scientists towards the consequences of global warming.
Positive effects
1. make plants grow faster 2. crops will produce more 3. a greater range of animals 4. make life better …
True or false
After remembering the vocabulary,
do the exercise on Page 28.
3.The purpose of the first paragraph is to ___. A. introduce the writer B. explain a change C. introduce the topic D. raise a question 4. The graphs are used to _____. A. illustrate points by providing evidence B. tell the change of temperature C. tell the content of carbon dioxide in the air D. interest the readers 5. What’s the purpose of the last paragraph of the passage? It functions as a conclusion by asking the reader to reflect on the major theme of the text and to predict what might happen in the future.