精品课新人教选 B2U1 Discovering Useful Structure.pptx

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1、本课件已在中国版权保护中心登记作品著作权，本课件已在中国版权保护中心登记作品著作权，未经许可，禁止商用、分享、转载！未经许可，禁止商用、分享、转载！版权提示【版本：人教册别：选必二】Discovering useful structures UNIT 1 SCIENCE AND SCIENTISTScontents HomeworkIIIIVObserve and DiscoverPractice and ApplyLead in Lead in HisdreamistodefeatCholera.Hefinallybecameasuccessfulscientist.Thecausesoft

2、hediseaseremainunknowntothepublic.Theresultsoftheexperimentsoundreasonable.Learn about something about John Snow and analyze what part does the underlined part serve as in each sentence.表表语WhatJohnSnowshowedtotheworldwashowcholeracouldbeovercome.TheexactplacesSnowmarkedonthemapwerewhereallthosewhodi

3、edhadlived.Snowsfindingwasthatthepumpwatercarriedcholeragerms.表语从句的概念表语从句的概念系动词系动词表表语语从句从句Observe the sentences and think about what is a predicative clause.系动词系动词表表语语从句从句表表语语从句从句系动词系动词在复合句中，位于在复合句中，位于_之后，充当之后，充当_的名词性从句的名词性从句称作称作表语从句表语从句。表语表语系动词系动词可以接表语从句的可以接表语从句的系动词系动词有有:lbe;lfeel,seem,look,appear,

4、sound,taste,smell;lremain,keep,stay;lbecome,get,grow,turn,go,come,run,fall;lprove,turnout.表语从句的概念表语从句的概念Observe and DiscoverlIn general,doctors in those days had two contradictory theories to explain how cholera spread.One theory was _ bad air caused the disease.Another was _ cholera was caused by a

5、n infection from germs in food or water.(Para.2)lWhat is more,in another part of London,a woman and her daughter had died of cholera after moving away from Broad Street.It seemed _ the woman liked the water from the pump so much that she had it delivered to her house every day.(Para.3)一、一、that 引导的表语

6、从句引导的表语从句thatthatthatthat_ _ 意义，在表语从句中意义，在表语从句中 _ _ 成分成分,起起_ _ 作用，作用，_ _ 省略。省略。无无不充当不充当连接连接不能不能lThe question is _ we can rely on him.He often tells lies.lThe question is _ we can finish the task on time,for we have only three days left.二、二、whether引导的表语从句引导的表语从句whetherwhether思考：可以用思考：可以用“if”来引导吗来引导吗？

7、连接词连接词whether起起 _ _ 作用，意为作用，意为“_”，在句中也在句中也不作任何成分不作任何成分（注意：（注意：if_引导表语从句引导表语从句)。连接连接是否、究竟、到底是否、究竟、到底不能不能三、三、what,which,who,whom,whose等引导的表语从句等引导的表语从句lTom is no longer _ he used to be.lThe question is _ of us should come first.(我们两个中的哪一个)lThe problem is _ is really fit for the hard job.lThe important

8、thing is _name should be put on the top of the list.whatwhichwhowhose连接代词连接代词 what,which,who,whom,whose 除在句子中起除在句子中起 _ _ 作用外，还可在从句中作作用外，还可在从句中作 _、_ _ 或或 _，且，且各有词义。各有词义。连接连接主语主语表语表语定语定语四、四、where,when,why,how引导的表语从句引导的表语从句lThats _ I cant agree with you.lThis is _ Sara was late for the meeting.(She mis

9、sed the early bus.)lThis is _ they overcome the difficulties.lMy strongest memory is _ I attended an American wedding as a child.wherewhyhowwhen连接副词连接副词where,when,why,how除在句中起除在句中起_ _ 作用外，在作用外，在从句中还充当从句中还充当_、_、_或或_状语，本身具状语，本身具有词义。有词义。连接连接时间时间地点地点方式方式原因原因lIt seems _ he doesnt know the answer.lIt look

10、s _ it is going to rain.五、五、asif/asthough引导的表语从句引导的表语从句asif/asthoughasif/asthoughasif/asthough引导的表语从句常置于引导的表语从句常置于_ _ look,seem,sound,be,become 等等_。系动词系动词后面后面1.Thereasonwhyheislateforschoolis_ hemissedthebus.2.Whywedecidedtoputoffthefootballmatchis _ theweatherwastoobad.thatthat当主句的主语是当主句的主语是_或或why引

11、导的引导的_时常时常用用_来引导表语从句，而来引导表语从句，而不用不用because。thereason主语从句主语从句thatAttention3.I think thats _ he was so angry.4.I think it is _ you are doing too much.5.The reason _ he was so late is _ it was raining hard.whybecauselthat/this/it+is/was+why+_(原因/结果)表示“_”lthat/this/it +is/was+because+_(原因/结果)表示“_”lthe r

12、eason why is that 中 why 是引导 _，that 引导的是 _，表示“_”。这这 /那就是那就是的原因的原因结果结果这这 /那就是因为那就是因为原因原因whythat定语从句定语从句表语从句表语从句的原因是的原因是 Attention6.My suggestion is that we _(go)and help him.7.My advice is that we _(get)there by train.(should)go(should)get当主句的主语是表示当主句的主语是表示建议（建议（suggestion,advice）、命令）、命令（order）、要求（）、要

13、求（request,proposal）、计划（）、计划（plan）等的名词等的名词时，表语从句要用时，表语从句要用虚拟语气虚拟语气，即，即（should）+动词原形动词原形。AttentionPractice and Apply1.My worry is if he can get there on time.2.The reason why he failed was because he hadnt studied hard.3.My advice is that he sees the doctor right away.4.The trouble is what we are shor

14、t of money.thatPractice and Applywhetherthatsee即学即练改错改错Complete the following ideas by famous scientists with a word or expression that introduces a predicative clause and translate them in your own words.1.Researchis_ImdoingwhenIdontknowwhatImdoing.(WernervonBraun)whatasthoughbecausethatwhatwhoever

15、whyPractice and Apply 研究就是当我不知道自己在做什么的时候我在研究就是当我不知道自己在做什么的时候我在做的事。做的事。布劳恩（徳裔美籍火箭科学家）布劳恩（徳裔美籍火箭科学家）2.The saddest aspect of life right now is _ science gathers knowledge faster than society gathers wisdom.(Isaac Asimov)thatasthoughbecausethatwhatwhoeverwhyPractice and Apply当下生活最可悲的一面就是科学积当下生活最可悲的一面就是科

16、学积累知识的速度超过了社会积累智慧累知识的速度超过了社会积累智慧的速度。的速度。艾萨克艾萨克阿西莫夫阿西莫夫 （美国科幻小说作家、化学家）（美国科幻小说作家、化学家）3.An expert can be _ has made all the mistakes that can be made in a very narrow field.(Niles Bohr)whoeverasthoughbecausethatwhatwhoeverwhyPractice and Apply专家可能是在一个非常狭窄的领域里犯了专家可能是在一个非常狭窄的领域里犯了所有可能犯的错误的人。所有可能犯的错误的人。尼耳

17、斯尼耳斯玻尔玻尔 （丹麦物理学家）（丹麦物理学家）4.When different experiments give you the same result,it is no longer subject to your opinion.Thats the good thing about science:It is true whether or not you believe in it.Thats _ it works.(Neil deGrasse Tyson)whyasthoughbecausethatwhatwhoeverwhyPractice and Apply当不同的实验呈现出相

18、同的结果时，它就不再受当不同的实验呈现出相同的结果时，它就不再受制于你的意见。这就是科学的好处制于你的意见。这就是科学的好处:不管你信不不管你信不信它都是真的。这就是科学工作的原理。信它都是真的。这就是科学工作的原理。奈尔奈尔德葛拉司德葛拉司泰森泰森 （美国天文学家）（美国天文学家）5.This applied science,which saves work and makes life easier,brings us little happiness.That is _ we have not yet learnt to make sensible use of it!(Albert E

19、instein)becauseasthoughbecausethatwhatwhoeverwhyPractice and Apply这种节约工作量，使生活更容易的应用科学，这种节约工作量，使生活更容易的应用科学，给我们带来的快乐很少。那是因为我们还没有给我们带来的快乐很少。那是因为我们还没有学会合理地利用它学会合理地利用它!爱因斯坦爱因斯坦6.There are only two ways to live your life.One is _ nothing is a miracle.The other is _ everything is a miracle.(Albert Einstein

20、)asthoughasthoughasthoughbecausethatwhatwhoeverwhyPractice and Apply你的生活只有两种方式。一种是好像什么都你的生活只有两种方式。一种是好像什么都不是奇迹。另一种是好像一切都是奇迹。不是奇迹。另一种是好像一切都是奇迹。爱因斯坦爱因斯坦Homework 1.FinishthequestionsonP62usingstructures1&2.2.Putforwardsomesuggestionsforyourclassmatebyusingpredictiveclausesasmuchaspossiblewhenhe/shefailedinanEnglishexam.