必修3unit 4 复习课--李甜甜--高密四中.

1、Learning Aims :1.Review the key words, phrases and their usage .2. Master some practical sentence structure and grammar. 3. Use what have been taught to write a mini-composition.课前热身课前热身Warming Up1._ n.天文学天文学2._ pron，n.& adj. 十亿十亿3._ adj.猛烈的，激烈的猛烈的，激烈的4._ n.大气层；气氛大气层；气氛5._ adj.有害的有害的6._ adv.因此；于

2、是因此；于是7._ n.卫星；人造卫星卫星；人造卫星8._ n.气候气候9._ n.谜，难题谜，难题v.使迷惑使迷惑10._ v.存在，生存存在，生存astronomybillionviolentatmosphereharmfulthussatelliteclimatepuzzleexistKey words11.religion n. _12.theory n. _13.globe n. _14.fundamental adj. _15.multiply v. _16.oxygen n. _17.gravity n. _18.crash v. _宗教，宗教信仰宗教，宗教信仰学说，理论学说，理

3、论球体；地球仪；地球球体；地球仪；地球 基本的；基础的基本的；基础的乘；增加乘；增加氧气氧气万有引力；重力万有引力；重力碰撞；坠落碰撞；坠落1. 及时及时;终于终于 _2. 轮到某人轮到某人;接着接着 _3. 阻止阻止;制止制止 _4. 感到高兴感到高兴;感到兴奋感到兴奋 _5. 既然既然 _6. 爆发爆发;突发突发 _7. 密切注视密切注视;当心当心;提防提防 _watch out in timein ones turnprevent .from (doing).cheer upnow thatbreak out8. 依赖；依靠依赖；依靠 _9. 四面八方四面八方 _10. 摔倒；跌倒摔倒；

4、跌倒 _11.lay eggs _12.give birth to _13.block out _14 get the hang of _15.cool down _冷却下来冷却下来depend onin all directionsfall over下蛋下蛋产生，分娩产生，分娩挡住挡住(光线光线)掌握，熟悉；理解掌握，熟悉；理解即时练习即时练习1. What would happen if there were no _(大气层大气层).2. The government is encouraging the _(发展发展) of small businesses.3. Fruit juic

5、es can be _ (有害有害)to childrens teeth.4. Sault _(存在存在) in the ocean.5. My sister is _(不像不像) my mother. She _(不喜欢不喜欢) little animals.6. The earth became so _ that it was not clear whether the shape would last or not.atmospheredevelopmentharmfulexistsunlikedislikesviolent课内探究课内探究(1)prevent.from.阻止某人做某事

6、=stop.from. /keep.from. 注意：注意：keep后的后的from不能省略；在被动语态中，此三个不能省略；在被动语态中，此三个短语的短语的from 均不可省略。均不可省略。(2)protect.from.保护免受活学活用1.She _her eyes from the sun with her hand.她用手遮住太阳保护眼睛。2.We must do what we can to prevent the rivers from _ by factories.Ato pollute Bto be pollutedCpolluting Dbeing pollutedDprote

7、ctedStep1: Word Usage2.puzzle n.迷；难题迷；难题 v.(使使)迷惑；迷惑；(使使)为难为难活学活用活学活用1. His recent behavior _ (使我迷惑不解使我迷惑不解).2. His answer sounds _(puzzle) and we are all_ (puzzle).3. _at what had happened，she decided to look into the matter on her own.APuzzle BTo puzzled C Puzzled DPuzzlingpuzzled mepuzzlingpuzzle

8、d _n.& v. 伤害，损害伤害，损害 _adj.无害的，无恶意的无害的，无恶意的 _(搭配搭配)对对有害有害 3.harmful adj. 有害的有害的harmharmlessbe harmful to=do harm to 活学活用1.As we all know，smoking is _ to our health. Thats to say，it does_ to our health. harmfulharm1.原句：原句：It was not immediately obvious that water was to be fundamental to the devel

9、opment of life.水对于生命的发展会起关键作用，这一点水对于生命的发展会起关键作用，这一点在当时并不明显。在当时并不明显。 句型：句型：It is obvious that. 显然显然It用作形式主语用作形式主语, that 从句是真正的主语从句从句是真正的主语从句1.很明显他昨天没有说实话。很明显他昨天没有说实话。_ yesterday.2.After 5,000 years of history，_is no surprise that many Chinese people have become pretty set in their ways.Ait Bthat Cwhi

10、ch DthereStep2: Key Sentences Structure1.If the factories keep on sending off this kind of smoke，great harm will be _to the living things here.Amade Bdone Ctaken Dsuffered2.The nurse tried to _ up the little boy when he started to cry.Acheer Bdress Cget DMake3._everyone is here，lets begin our meetin

11、g!ANow that BThat CAs if DIf4.They couldnt agree with each other and finally a quarrel _ between them.Abroke up Bbroke down Cbroke out Dbroke inpracticeBAAC2.原句：原句： This produced a chain reaction，which made it possible for life to develop.这这就产生了一系列的连锁反应，使得生命就就产生了一系列的连锁反应，使得生命就有可能开始发展了。有可能开始发展了。句型：句型

12、：make it+adj.+for sb.to do使某人使某人做某事做某事说明：说明：it是形式宾语，是形式宾语，for sb.to do是真是真正的宾语。正的宾语。 it作形式宾语时不仅可代替不定式，还可代替动作形式宾语时不仅可代替不定式，还可代替动名词和句子。名词和句子。 We consider it no use _the problem with him. 我们认为和他讨论这个问题没用。我们认为和他讨论这个问题没用。 The book_ English. 这本书使我学习英语容易多了。这本书使我学习英语容易多了。 makes it easy to learndiscussing3. 原

13、句原句 Why they suddenly disappeared still remains a mystery.他们为什么会突然灭绝至今还是个谜。（1）本句中why they suddenly disappeared是名词性从句在句中作主语，引导词是关系副词why，在从句中作原因状语。 （2）Remain作系动词意思是“保持，仍然是”，其后常接名词、形容词、分词和介词短语作表语。（3）remain也可以接被动结构的不定式，意思是“尚待 、有待于”。如：It remains to be seen whether you are right.你是否正确，以后见分晓。translation1.

14、有好几个问题尚待解决。_2.她整个晚上沉默不语。 _Several problems remain to be solved.She remained silent all night.4. 原句原句 But when I tried to step forward，I found I was carried twice as far as on the earth and fell over.而当我试着向前迈步的时候，而当我试着向前迈步的时候，我发觉我被送出去很远，步子的跨度竟是在地球我发觉我被送出去很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。上的两倍，因而我摔倒了。倍数的表达式“A倍

15、数形容词或副词比较级比较级thanB”，表示“A比B大(长、高、宽等)多少倍”。“A倍数as形容词或副词原级原级asB”，表示“A是B的多少倍”。“A倍数the size/height/widthofB”，表示“A正好是B的多少倍”。我的房子是我父母的两倍大。我的房子是我父母的两倍大。My house is twice bigger than my parents.My house is twice as big as my parents.My house is twice the size of my parents.Noun Clauses(名词性从句名词性从句)Subject Clau

16、se (主语从句主语从句)Appositive Clause（同位语从句）（同位语从句）Object Clause（宾语从句）（宾语从句）Predicative Clause（表语从句）（表语从句）1. 用用 that / whether / if/ /where / how / when /why / who /what/which/ how much / etc. 来连接主语从句来连接主语从句.Summary:Subject Clause3.引导主语从句在引导主语从句在句首句首只能用只能用whether,有有it作形式主语的作形式主语的whether/if都可以都可以.2.That 在主语

17、从句中在主语从句中不能省略不能省略.4.有时为了使句子有时为了使句子结构平衡结构平衡, 避免避免 “头重脚轻头重脚轻”,常用常用 it 作形式主语作形式主语,而把从句放在后面而把从句放在后面.5.主语从句作主语时，谓语动词一般用单数形式。主语从句作主语时，谓语动词一般用单数形式。2. _ they can solve the question is still unknown. A. If B. Which C. Whether D. What3. _ he said at the meeting astonished everybody. A. Why B. What C. That D.

18、Who4. _ is a fact that English is accepted as an international language. A. There B. This C. That D. It1. _ we need more practice is quite obvious. A. What B. That C. When D. / Pick up one number and finish the task in it, then you can get some points.1234567891011 12 13 14 15 16 17 18 19 2021 22 23

19、 24 25 26 27 28 29 30Correct or not?*When the meeting will be held havent been known yet. be held hasnt been known yet.Pay attention:主语从句的谓语用主语从句的谓语用单数单数形式形式 10 the cat domade What the cat did made the baby cry.WhatcryMake a sentence301.The question is _ the film is worth seeing.2._ we shall attend

20、the meeting hasnt been decided yet. 用用whetherif填空填空whetherWhether10Translate the sentence*_(他他们很需要帮助们很需要帮助)is quite clear. That they are badly in need of help20talk aboutthe use of cell phone What they are talking about is the use of cell phone.Make a sentence30* If we will have a meeting hasnt been

21、 decided yet.Correct or not?Whether we will. decided yet.Pay attention:放在名词性从句放在名词性从句句首句首，表示，表示“是否是否”，只能用，只能用whether, 不能用不能用if10Translate the sentence*It is known to us_(马克马克.吐温怎样成吐温怎样成为一位伟大的作家为一位伟大的作家). how Mark Twain became a great writer20report , get the highest points, match It is reported that

22、 Yao Ming got the highest points in the match.Make a sentence30 Correct or not?Pay attention:注意注意虚拟语气虚拟语气在名词性从句中的在名词性从句中的使用！在使用！在It is necessary important natural. that句型中，从句的谓语要用句型中，从句的谓语要用should+do 的形的形式式It is important that we should finish.*It is important that we will finish the work on time. 1

23、0 Correct or not?Pay attention:此主语从句此主语从句缺少成分缺少成分-宾语，宾语，故用作成分的故用作成分的what来引导，而不用来引导，而不用that。What she wants to know is.*That she wants to know is when the party will be held . 10 Correct or not?Pay attention:由由that引导的主语从句放在句引导的主语从句放在句首，首，that 不能省略不能省略。That he will give up*He will give up his job surpr

24、ises all of us.10Translate the sentence*_（她是否出席会议）（她是否出席会议）is not certain.Whether she will attend the meeting20It makes the teacher angry that the child doesnt know the answer.teacher angryDont know the answerMake a sentence30拓展练习拓展练习-基础写作基础写作Step4: 知识的整合与运用知识的整合与运用A fire写作要求写作要求1. 1.使用几个句子（简单句，从句使用

25、几个句子（简单句，从句) )表达全部的内容。表达全部的内容。 2.2.注意句子之间的连贯性。注意句子之间的连贯性。能力提升能力提升 合作探究合作探究 (Discussion)1. 一天，一座高楼一天，一座高楼发生发生了大火，人们了大火，人们向四面八方向四面八方逃逃跑。跑。2. 幸运的是，消防员幸运的是，消防员及时赶来及时赶来救人。救人。3. 他们他们让让人们人们冷静下来，轮流冷静下来，轮流来救困在火中的人。来救困在火中的人。4.很显然，很显然，消防员消防员阻止阻止了火势蔓延。了火势蔓延。5. 由于他们的帮助，大火没有由于他们的帮助，大火没有伤害伤害到人。到人。6. 甚至一个要甚至一个要生宝宝生宝宝的妇女也没有受伤。的妇女也没有受伤。7.既然既然没有人在大火中受伤，人们开始没有人在大火中受伤，人们开始高兴起来高兴起来。1. 一天，一座高楼一天，一座高楼发生发生了大火，人们了大火，人们向四面八方向四面八方逃跑。逃跑。2. 幸运的是，消防员幸运的