2017年高一英语人教版必修3教案：Unit4Revision：SummingUpandLearningTip+Word版含解析

教学设计Revision：Summing Up and Learning Tip整体设计教材分析This is the last teaching period of this unit，so the emphasis should be placed on going over and summarizing what has been learned in this unit.It includes the following parts：Summing Up，Learning Tip，assessment and consolidation exercises.Summing Up summarizes the whole contents of this unit from the aspects of topics，vocabulary and grammar.The teacher can first use this part to let students sum up what they have learned and then explain what students couldn't understand very well in this unit.An experienced teacher should design some additional exercises for students to do in order that they can learn to use and grasp all the contents.Learning Tip tells students that astronomy is a scientific subject made up of mathematics and physics.Encourage them to use the scientific method when studying English.They can study carefully how new words and structures are used，try to make a simple rule in their own words to explain how and when a new word or structure is used，test their theory by using the words or structures in new situations and ask people to tell them if they are using them correctly.Then they will know if their theory is correct.This is a good way of learning English.So make sure that students have a try.In this period，the teacher can also provide more practices to consolidate what students have learned in this unit.Finally，ask students to finish Checking Yourself on Page 68 in the Workbook.This part aims at encouraging students to make a self-assessment after they finish learning this unit.It is very important to improve their learning.Of course，a testing assessment is also needed.教学重点1．Get students to review and consolidate what they have learned in this unit.2．Develop students' ability to solve problems.教学难点Get students to turn what they have learned into their abilities.三维目标知识目标1．Get students to go over the useful new words and expressions in this unit.2．Have students review the new grammar item：noun clauses as the subject.能力目标1．Develop students' ability to use the important language points in this unit.2．Enable students to learn to use noun clauses as the subject correctly.情感目标1．Encourage students to learn more about astronomy.2．Stimulate students' love of science.3．Strengthen students' sense of group cooperation.教学过程Step 1 Revision1．Check the homework exercises.2．Dictate some useful new words and expressions in this unit.Step 2 Lead-inTell students：Up to now，we have finished Unit 4 Astronomy：the science of the stars.Have you learned and grasped all in this unit？Turn to Page 32.You can check yourself by filling in the blanks in the part Summing Up.Step 3 Summing UpFive minutes for students to summarize what they have learned in this unit by themselves.Then check and explain something where necessary.Suggested answers：Write down what you have learned about the development of the earth and making a space trip.（Students'_answer_may_vary.）We_have_learned_about_science_of_the_stars，the_development_of_life_and_space_travel_and_gravity.From this unit you have also learneduseful verbs：multiply，exist，puzzle，crash，pull，floatuseful nouns：astronomy，system，religion，theory，atom，billion，globe，carbon，atmosphere，acid，chain，oxygen，dioxide，puzzle，biology，biologist，gravity，satellite，physicist，climate，spaceship，float，massuseful adjectives and adverbs：billion，violent，fundamental，harmful，gentle，thusother expressions: solar_system，in_time，in_one's_turn，carbon_dioxide，now_thata new grammar item：noun_clauses_as_the_subjectStep 4 PracticeShow the exercises on the screen or give out exercise papers.First let students do the exercises.Then the answers are given.The teacher can give them explanations where necessary.Ⅰ．Word spelling1．The old administration s______ is under greater and greater challenge.2．Almost every country has some form of r______.3．One t______ about the moon is that it is a piece broken off the earth.4．Not a few v______ scenes were cut from the film before it came to show.5．The earth has an a______ which allows us to breathe the air.6．She is u______ her mother；she is tall and her mother is very short.7．Fresh air is f______ to good health.8．When animals have more food，they generally m______ faster.9．The Roman Empire e______ for several centuries.10．It's a p______ where all my money goes each week.Ⅱ．Fill in the blanks with the expressions given e each expression only once and make changes where necessary.in time give birth to in one's turn prevent…from cheer up now that break out watch out1．Over 500 people were working in the building when a big fire ______ on the third floor.2．A few pictures ______ this room ______ a bit.3．I intended to catch the early train，but I didn't get up ______.4．What can we do to ______ the disease ______ spreading?5．______ you are grown-up，you should not rely on your parents any more.6．The staff were asked to ______ for forged banknotes.7．Mary ______ a healthy baby last night，which makes her family very happy.8．They，______，entered the hall and seated themselves at the back.Ⅲ．Fill in the blanks with proper conjunctives.1．______ Alice should have married Tom is not at all surprising.2．______ caused the fire is still a mystery.3．______ she comes or not doesn't concern me.4．______ the book will sell depends on the author.5．______ he left so suddenly is not known to us all.Keys for reference：Ⅰ．1．system2．religion3．theory4．violent5．atmosphere6．unlike 7．fundamental8．multiply9．existed10．puzzleⅡ．1．broke out2．cheered；up3．in time4．prevent；from5．Now that6．watch out7．gave birth to8．in their turnⅢ．1．That2．What3．Whether4．How5．WhyStep 5 Learning TipAsk students to turn to Page 32.Read through the passage and make sure they understand it.Encourage them to do as the passage tells them to because if they are doing so they will be teaching themselves a useful way of learning and form a good habit.Step 6 Assessment1．Checking Yourself（on Page 68 in the Workbook）First get students to think about these questions individually.Then they can discuss in groups sharing their experience.The teacher can join in and give them advice and suggestions where necessary.2．Fill in the form.After learning thisunit，I'm able to do the following things…Very well WellOnly with the help ofothersI need to work harder.1．Giving a brief introduction to the beginning of the earth in my own words. 2．Describing how the gravity will change if I leave for the moon fora spaceship. 3．Giving a brief introduction to the “black hole” theory. 4．Using the new words and expressions of this unit in speaking and writing. 5．Using the expressions of giving instructions in speaking.6．Using the noun clauses as the subject correctly in speaking and writing.Step 7 Homework1．Finish off the Workbook exercises.2．Review and summarize what you have learned in Unit 4.备课资料Further readingThe Mystery of When Life BeganScientists are still trying to unravel one of the greatest mysteries of earth：When did “life”first appear and how did it happen？It is estimated that the first life forms on the earth were primitive，one-celled creatures that appeared about 3 billion years ago.That's pretty much all there was for about the next two billion years.Then an unprecedented profusion of life in incredibly complex forms began to fill the oceans.Some crawled from the seas and took residence on land，perhaps to escape predators in the ocean.A cascading chain of new and increasingly differentiated forms of life appeared all over the planet，only to be virtually annihilated by an unexplained mass extinction.It would be the first of several mass extinctions in Earth's history.Scientists have been looking increasingly to space to explain these mass extinctions that have been happening almost like clockwork since the beginning of “living” time.Perhaps we've been getting periodically belted by more space rocks（i.e.asteroids），or the collision of neutron stars happening too close for comfort？Each time a mass extinction occurred，life found a way to come back from the brink.Life has tenaciously clung to this small blue planet for the last three billion years.Scientists are finding new cues as to how life first began on the earth in some really interesting place—the deep ocean.。