Unit 1 Discovering Useful Structure-ppt课件-（2022）新人教版(2019新版)高中英语选择性必修第二册.pptx

1、【版本：人教册别：选必二】Discovering useful structures contents HomeworkIIIIVObserve and DiscoverPractice and ApplyLead in Lead in His dream is to defeat Cholera.He finally became a successful scientist.The causes of the disease remain unknown to the public.The results of the experiment sound reasonable.Learn a

2、bout something about John Snow and analyze what part does the underlined part serve as in each sentence.表语What John Snow showed to the world was how cholera could be overcome.The exact places Snow marked on the map were where all those who died had lived.Snows finding was that the pump water carried

3、 cholera germs.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_的名词性从的名词性从句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可以接表语从句的的系系动词动词有有:l be;l feel,seem,look,appear,sound,taste,smell;l remain,keep,stay;l become

4、,get,grow,turn,go,come,run,fall;l prove,turn out.表语从句的概念表语从句的概念Observe and Discoverl In 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 an infection from germs in food or water.

5、(Para.2)l What 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)thatthatthatthat _ _ 意义，在表语从句意义，在表语从句中中 _ _ 成分成分,起起_

6、_ 作用，作用，_ _ 省略。省略。无无不充当不充当连接连接不能不能l The question is _ we can rely on him.He often tells lies.l The question is _ we can finish the task on time,for we have only three days left.whetherwhether思考：可以用思考：可以用“if”来引导吗？来引导吗？连接连接词词whether起起 _ _ 作用，意为作用，意为“_”，在句中也在句中也不作任何不作任何成分成分（注意：注意：if _引导引导表语表语从句从句)。连接连接

7、是否、究竟、到底是否、究竟、到底不能不能l Tom is no longer _ he used to be.l The question is _ of us should come first.(我们两个中的哪一个)l The problem is _ is really fit for the hard job.l The important 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

8、，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l Thats _ I cant agree with you.l This is _ Sara was late for the meeting.(She missed the early bus.)l This is _ they overcome the difficulties.l My strongest memory is _ I attended an American wedding as a child.wherewhyhowwhen连接连接副词副词wher

9、e,when,why,how除除在句中起在句中起_ _ 作用外，作用外，在从句中还充当在从句中还充当_、_、_或或_状语状语，本身，本身具有词义。具有词义。连接连接时间时间地点地点方式方式原因原因l It seems _ he doesnt know the answer.l It looks _ it is going to rain.as if/as thoughas if/as thoughas if/as though 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.The reason why he

10、is late for school is _ he missed the bus.2.Why we decided to put off the football match is _ the weather was too bad.thatthat当主句的主语是当主句的主语是 _ 或或 why 引导的引导的 _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。the reason主语主语从句从句thatAttention3.I think thats _ he was so angry.4.I think it is _ you are doing too m

11、uch.5.The reason _ he was so late is _ it was raining hard.whybecausel that/this/it+is/was+why+_(原因/结果)表示“_”l that/this/it +is/was+because+_(原因/结果)表示“_”l the reason 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原因原因这这 /那就是因为那就是因为结果结果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 suggestio

12、n 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（）、要求（request,proposal）、计划（）、计划（plan）等的名词时，表等的名词时，表语从句要用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 ge

13、t 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 short of money.thatPractice and Applywhetherthatsee即学即练改错Complete the following ideas by famous scientists with a word or expression that introd

14、uces a predicative clause and translate them in your own words.1.Research is _ Im doing when I dont know what Im doing.(Werner von Braun)what as though because that what whoever 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 l

15、ife right now is _ science gathers knowledge faster than society gathers wisdom.(Isaac Asimov)that as though because that what whoever whyPractice 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

16、the mistakes that can be made in a very narrow field.(Niles Bohr)whoever as though because that what whoever whyPractice 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

17、opinion.Thats the good thing about science:It is true whether or not you believe in it.Thats _ it works.(Neil deGrasse Tyson)why as though because that what whoever whyPractice and Apply当不同的实验呈现出相同的结果时，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

18、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 Einstein)because as though because that what whoever whyPractice 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

19、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)as thoughas though as though because that what whoever whyPractice 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.Finish the questions on P62 using structures 1&2.2.Put forward some suggestions for your classmate by using predictive clauses as much as possible when he/she failed in an English exam.thank you