[学案]人教版高一英语必修3第四单元(Book 3) Unit 4学案含答案

1、unit 4 astronomy: the science of the stars（module 3） period 1 reading: how life began on the earth班级 _ 姓名_ 学号 _ learning objectives:1. learn the useful new words and expressions in the reading material.2. improve the reading skills while reading the passage about the astronomy. learning key points:1

2、. grasp the important words and expressions in the reading material.2. learn something about how life began on the earth.learning difficult points:1. grasp the important words and expressions.2. improve the reading ability.learning procedures:i. 【pre-class homework】a.match the main idea of each para

3、graph.para 1: ( ) a. the formation of the earth.para 2: ( ) b. a widely accepted theory about the information of the universe. para 3; ( ) c. the arrival of humans and their impact on the earth.para 4: ( ) d. the importance of water for life.para 5: ( ) e. the development of plants and animals on th

4、e earth.b. ask and answer.1. what was there on the earth before life could begin? _2. why did animals first appear in the seas? _ii. while-classstep 1 lead-instep 2 discussionss discuss their pre-class homework in groups.step3 consolidationa. further reading and finish the following comprehension qu

5、estions.1. ( ) what forms the earths atmosphere?a. carbon dioxide, oxygen .b. carbon dioxide, oxygen, poisonous gas.c. water vapor, carbon dioxide, oxygen, nitrogen.d. water vapor, carbon dioxide, oxygen, nitrogen and other gases.2. ( ) why was the earth different from other planets?1a. it produced

6、a lot of heat. b. the water remained.c. water disappeared. d. it was the oldest planet.3. ( ) what kind of factor improved the progress of life?a. water forms on the earths surface.b. green plants began to appear on land.c. the air is full of carbon dioxide.d. animals began to appear such as insects

7、, amphibians, est.3. ( ) what is the main idea of this passage?a. it tells us how life begins to appear on the earth.b. it tells us why green plants grow before animals.a. it tells us water plays an important role in the development of life.a. it tells us carbon dioxide is the reason why living bein

8、gs will die in the future,4. ( ) the author infers us that if we want the life to continue on the earth, what should we do?a. we should produce more carbon dioxide to cause global warming.b. we should solve the problem of global warming as soon as possible.c. we should bear less people and think abo

9、ut a new way to grow more crops.d. we should be worthy of water.b. cloze test.at the very beginning, the earth was just a cloud of 1. _ (energy) dust. then the dust combined 2. _ a ball moving around the sun. after that, it exploded 3._(loud) with fire and rock, 4. _ (produce) water vapor, carbon di

10、oxide and other gases, 5. _ made 6. _ possible for life to begin to develop. some small plants 7. _ (grow) in the water appeared on the earth s surface, 8. _ (follow) by land animals, including insects, amphibians, reptiles and the dinosaurs. but they disappeared 9. _ of a sudden and some small clev

11、er animals with hands and feet appeared and spread all over the earth and took the place of dinosaurs. they became 10. _ most important animals on the planet that is, human beings.step 4 presentingss present their group job.1 ss write down their answers on the blackboard and give the explanation in

12、class.2 teacher and ss comment.step 5 summaryss talk about what they have learned in the lesson.keys:【pre-class homework】2a. fast reading1. badecb.1. water vapor, carbon dioxide, oxygen, nitrogen and other gases.2. because water allowed the earth to dissolve harmful gases into the oceans and seas. w

13、hile-classa. 1-5 dbbabb. cloze test.1. energetic 2. into 3.loudly 4. producing 5. which 6. it 7. growing 8. followed 9. all 10. themodule 3 unit 4 astronomy: the science of the starsperiod 2 language points in reading 1class：name：group：no：3learning objectives:1. learn and grasp the important useful

14、new words and expressions.2. learn the important useful sentences and patterns.3. make sentences after the useful expressions.learning key points:ss grasp the usages of such important new words and expressions.learning difficult points:ss understand some difficult and long sentences.learning procedu

15、res:i. 【pre-class homework】a. make sentences using the following works and phrases:1. in time2. unlike3. exist4. give birth to5. in time6. in onesturn7. prevent,fromii. 【while-class】step1. lead-instep2. group discussionstep3consolidationsentences:1. what it was to become was uncertain until between

16、4.5 and 3.8 billion years ago when the dust settled into a solid globe.【要点】句子结构: what 引导的是_，what 在从句中作_【模仿翻译】(1) 使大家吃惊的是他没有来。(2) 你所需要的是足够的练习。2. the earth became so violent that it was not clear whether the shape would last or not. 【要点】句子结构: whether(or not) 引导主语从句，it 为_【模仿翻译】他是否能成功通过驾驭考试还不确定。43. this

17、 produced a chain reaction, which made it possible for life to develop.【模仿翻译】(1) 他使得第天早晨六点起床成为了一种习惯。(2) 他发现不可能在星期五之前写完报告。4. so whether life will continue on the earth for millions of years to come will depend on whether this problem be solve.【仿写】宇航员能否浮起来要看引力(the force of gravity)是否足够小。step4presentat

18、ionstep5summaryiii.【post-class】self- reflectioni enjoyed learning abouti found these words useful:i found these expressions useful: i have learned aboutsome examples:keys:ii. while-classsentences:1.(1) what surprised everybody was that he didnt come.5(2) what you need is enough practice.2. it is unc

19、ertain whether he will succeed in passing that driving test or not.2.(1) he makes it a rule that he gets up at six every day. / he makes it a rule to get up at six every day.(2) he found it impossible to finish writing the report before friday.4. whether the astronaut can float depends on whether th

20、e force of gravity is small enough.period 3 grammar: noun clauses used as the subjectclass： name： group： learning objectives:learn and use the noun clauses correctly.learning key points:learn how to choose correct conjunctions in noun clauses.6no：learning difficult points:have ss grasp the skills ne

21、eded to choose the pronoun and adverb in the noun clauses correctly.learning procedures:i. 【pre-class homework】a. 根据课文填空，完成名词性从句连接词的填写。1. _ it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.1. _ many scientists believe is that the con

22、tinued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.3. it was not immediately obvious _ water was to be fundamental to the development of life.总结：填空区域的从句都属于名词性从句中的_，请用波浪线画出来。 b. 语法归纳连接词例句注意that, whether / if 1. that she doesnt understand english is

23、clear.2. whether the work can be completed on time is doubtful.3. it is doubtful whether / if the work can be completed on time.who, whom, whose, 3. which car you will choose to buy makes what, which , no difference.whichever, whoever, 4. what he says and what he does do not whatever, agree.how, why

24、, when, 5. how he was successful is still a puzzle. where, 6. when we shwhenever, wherever, all hold our sports meet is not decided. however,1. 从 句 要 采 用 _语序；2 从句的时态；3 主语从句的连接词 _省略；4 if 引导的主语从句 _ 置 于句首；5一个从句充当主语， 主句的谓语动词用 _数；6. 两个或两个以的从 句做主语，主句的 谓 语 动 词 用 _数。c. 预习世纪金榜p 48-49 的语法精析部分，并完成该部分的练习。ii. wh

25、ile-classstep1 discussionss discuss their pre-class homework in group.step2 consolidationa. 用适当的关联词填空whether, that, what, who, which, why, whoever, whichever, whatever1. _ fashion differs from country to country may reflect a cultural difference.72. _ she couldnt understand was that fewer and fewer

26、students showed interest in science.3. _ has helped to save the drowning girl is worth praising.4. _ well go camping tomorrow depends on the weather.5. it worried her a bit _ her hair was turning grey.6. _ book you borrow, you must return it in a week.7. _ will go to the concert is not known.8. _ he

27、 does is right.9. _ he was late for class was not clear.10. _ kind of books they will buy needs considering.b. 完成句子1._（谁将去接他）is not decided. 2. _（哪个班会赢得这场足球赛）is not clear so far. 3._（他能否买到飞机票）doesnt matter much. 4. _(我们如何去那里) is a question. 5. _ （你刚才告诉我的）was really a surprise. 6. _（他什么时候出国）is being

28、discussed. 7. _ （他为什么哭）is not clear. 8. it is clear _（他是一个乞丐）. 9. _(你邀请谁) is not important. 10. _（我们将在哪里开会议） is not clear.c单句改错1. where shall we spend the holiday isnt decided.2. you have made a mistake is a fact.3. if he is in danger is not clear.4. no matter who leaves the room last ought to turn

29、off the lights.1. is true that the professor will give us a lecture next monday?step3 presentingss present their group job.step4 summaryss talk about what they have learned in the lesson.keys:前置性作业a1. what 2. what 3. thatb1. 从句要采用陈述语序；2 从句的时态；3 主语从句的连接词不能省略；4 if 引导的主语从句不能置于句首；85一个从句充当主语，主句的谓语动词用单数；6

30、. 两个或两个以的从句做主语，主句的谓语动词用复数。step2 consolidation（巩固应用）a. 用适当的关联词填空1. that 2.what 3. whoever 4. whether 5. that 6. whichever/whatever7. who 8. what 9.why 10. whatb. 完成句子1. who will go to pick him up2. which class will win the football game3. whether he can get the plane ticket4. how we can get there5. w

31、hat you just now told me6. when he will go abroad7. why he cried8. that he is a beggar9. who will be invited by you10. where we will hold our meetingc. 单句改错1. where shall i spend the holiday isntdecided. where i shall2 you have mad ea mistake is a fact. that3. if he is in danger is not clear. whethe

32、r 4. no matter who leaves the room last ought to turn off the lights. whoever 5. is true that the professor will give us a lecture next monday? itunit 4 astronomy: the science of the stars（module 3）period 4 writingclass： name： group： no：learning objectives:learn and use the expressions in writing.le

33、arning key points:1. grasp the important sentence structure in the reading material.2. use the proper sentence structure in the writing assignment.9learning difficult points:develop ss writingabilitylearning procedures:i. 【pre-class homework】translate the chinese into english.a. phrases1. 面对 _ 8在我看来

34、_2 确定 _ 9液体_3 解决_ 10. 阻止.做._4 太空旅游 _ 11尝试_5 重力_ 12及时_6 漂浮_7 用这种方法_b. sentences1. 如果我去太空旅游，会有一个问题。2. 我可能会面对一个问题。3. 实际上，在太空喝水是一个大问题。4. 在外部太空，重力会很弱。5. 食物会到处漂浮。6. 液体太空食物可以放置在导管里以便轻松吸食。7. 在我看来，只有用这种方式，这个问题才可以被解决。ii. 【while-class】step1. lead-instep2. group discussionstep3consolidation灵活运用以上句式结构，完成写作任务：随着科

35、学技术的发展，人类太空旅游奖不再是遥远的梦想。假设你是李华，对太空 探索极感兴趣，现在请你写一篇英语短文，设想在今年暑假去太空旅游，如何克服失重 条件下吃饭和喝水的问题。_ _ 10_ _ _ _ _ _ _ _ _ _ _ _ _ step4presentationstep5summaryiii.【post-class】self- reflectioni enjoyed learning abouti found these words useful:i found these expressions useful:i have learned aboutsome examples:keys:a. phrases