Unit 1 Science and Scientists Discover useful structures 表语从句(ppt课件)-2022新人教版（2019）《高中英语》选择性必修第二册.pptx

1、Unit 1 Science and Scientists Pay attention to the circled words and the underlined parts.1.It sounds a good idea.2.The door remained closed.3.Her job is cleaning the house.4.You look terrific,Ann.5.It seems as if it is going to rain.link verbsPredicative Predicative:(of an adjective)coming after a

2、verb such as：be,look,sound,seem,remain and so on.n.V-edV-ingadj.sentencepredicative clause定义和结构引导词注意点010203CONTENT定义和结构1 1、表语从句的定义表语从句的定义The question is who will do it.The question is difficult.在复合句中充当表语的从句叫表语表语从句。从句。位于主句的位于主句的系动词系动词之后，对主语之后，对主语进行解释、说明，使主语的内容具体化。进行解释、说明，使主语的内容具体化。表语表语从句必须从句必须用陈述语序。用

3、陈述语序。（表表）（表表）表语从句表语从句2 2、表语从句的表语从句的结构结构The question is that I am tired.主语主语+系动词系动词+引导词引导词+简单句简单句表语从句表语从句e.g.This is why he did it.1.感官类系动词（sound,look,taste,smell,feel)2.变化类系动(get,fall,grow,turn,go,become)be动词3.状态系动词保持类系动词（keep,remain,stay）似乎类系动词（seem,appear）证明类系动词（prove,turn out)表语从句的判断 系动词后系动词后的成分为

4、表语。系动词后系动词后的从句为表语从句。（am,is,are,was,were)，意为“是”表语从句的引导词1、The fact is that he forgot about it.2、Everything remained as it used to be in this room.3、She looks as if she were ill.4、The trouble was whether we could manage it ourselves or not.5、The problem is not who will go,but who will stay.6、This is ho

5、w they overcame the difficulties.7、He missed the lecture.It was because his flight was delayed.Task Two:Circle the conjuction of each predicative clause.Task One:Underline the linking verbs.连连接接词词从属连词从属连词:that,whether,as if,as though,because 连接副词连接副词:when,where,why,how连接代词连接代词:what,who,whom,whose,wh

6、ich,+ever引导词Conjunction words（在从句中不作成分）（在从句中不作成分）（在从句中作（在从句中作主语、宾语、表语、定语主语、宾语、表语、定语）（在从句中作（在从句中作状语状语）Summary:表语从句引导词的选择 What I can see is _ the police are trained to defend themselves against attacks.The police are trained to defend themselves against attacks.what I can seethat表语从句引导词的选择 The questio

7、n is _ they could handle the problem.They could handle the problem.whetherthe question表语从句引导词的选择 The question is _ was suspected of stealing the money.They suspected someone of stealing the money.who表语从句引导词的选择 What makes us curious is _ led to EDGs achieving fame.EDG achieved fame few days ago.what连

8、接副词：when、where、why、how1.This is _I dont agree with you.这就是我不同意你的地方。2.The question is _we can get in touch with him.问题是我们怎样才能和他联系上。3.That is _ I got wet through.那就是为什么我被淋湿了。when、where、why、how引导表语从句，在从句中作状语，表示时间、地点、原因、方式。wherehowwhy即学即练learning and practice1.This is _I want.2.My English is limited.Thi

9、s is _ I hate reading English books.3.The village is _ I used to spend my holiday.4.He is my favorite singer.It is _ I really love the way he behaves.whatwherewhybecause即学即练learning and practice5、The trouble is _ we are short of funds.6、My problem is _ coat is suitable for me.7、I d like to start my

10、own businessthats _ I want to do if I had the money.8、What I want to know is _will support me.thatwhichwhatwho注意点 The question is how we can get in touch with him.The question is how can we get in touch with him.Rule 31 1、表语从句属于名词性从句，要用表语从句属于名词性从句，要用陈述语陈述语序：序：连词连词+主语主语+谓语（连主谓）谓语（连主谓）。2 2、thatthat引导表

11、语从句引导表语从句时时,在在句中只起连接句中只起连接作用作用,不不充当充当句子成分句子成分,无无实际实际意义意义,不不能省略。能省略。表语从句的注意点The grammar rulers of the predicative clauseeg：The problem is that I have lost his number.eg：The trouble is that I have lost his address.表语从句的注意点The grammar rulers of the predicative clauseThe question is if it is worthwhile

12、to do it.The question is whether it is worthwhile to do it.单句改错。3 3、表语从句的引导词表语从句的引导词没有没有ifif !表语从句的注意点The grammar rulers of the predicative clause My proposal is that we(should)start early tomorrow.My advice is that we(should)get there by train.My suggestion is that we(should)go and help him.4 4、表语从

13、句的表语从句的虚拟语气虚拟语气（1）主语为 advice、suggestion、proposal、demand、desire、requirement、request、order、command 等表示建议、要求、命令等意义的名词时，表语从句的谓语要用“(should)do”，其中should可省略，表示虚拟。表语从句的注意点The grammar rulers of the predicative clause Dark clouds are gathering.It looks as if its going to rain.It sounded as if the night would

14、never end.（2）as if/as though 引导的表语从句，引导的表语从句，如果是事实，就用陈述语气；如果是事实，就用陈述语气；如果与事实不符，就用虚拟语气。如果与事实不符，就用虚拟语气。表语从句引导词的选择 The young man with long hair looks _ he were a girl.as if这个留长发的男生看起来像是个女的。表语从句引导词的选择He looked _ he had seen a ghost.as if他看起来好像见鬼了一样。表语从句引导词的选择Dark clouds are gathering.It seems _ it is go

15、ing to rain.as if看起来好像要下雨了。表语从句的注意点The grammar rulers of the predicative clauseas if/as though 引导的表语从句的虚拟语气：若跟现在事实不符：过去式（be动词用were）若跟过去事实不符：had done 若跟将来事实不符：would/could+动词原形The little boy talks as if he knew (know)everything in the world.He felt as if he had met(met)this young lady for a long somew

16、here.1.It sounds as if someone _ knocking at the door.2.Tom likes to talk big as if he _ an important person.(对现在的虚拟，用一般过去时，be动词用were)3.He opens his mouth as he _ say something.(对将来的虚拟，用would/could/might+do)4.He talked about Rome as if he _ there.(对过去的虚拟，用had done)iswerewouldhad been(与事实相符)即学即练learn

17、ing and practice1.My suggestion is that we _(go)to hospital at once.2.When a pencil is partly in a glass of water,it looks as if it _(be)broken.3.My idea is that we _(get)more people to attend the conference.4.The little girl talked as if she _(be)a grown-up.should gowereshould gethad been表语从句的注意点Th

18、e grammar rulers of the predicative clause I do so many things for you.It is because I love you.I am late this morning.That is because I left my bag on the subway.Your speech is excellent.This is because you prepared it a lot.The reason why he was late was that he missed the early bus.The reason was

19、 that you dont trust her.He was ill.Thats why he was sent to the hospital.表语从句的注意点The grammar rulers of the predicative clause5、This/That/It is/was because/that+原因This/That/It is/was why+结果The reason why+结果.is/was that+原因.Summary:表语从句引导词的选择 He failed in the exam.Thats _ he felt frustrated.He felt fr

20、ustrated.He failed in the exam.why表语从句引导词的选择He felt frustrated.Thats _he failed in the exam.becauseHe felt frustrated.He failed in the exam.1、I lost the game.The reason was _ I underestimated my competitors.=The reason _ I lost the game was _ I underestimated my competitors.I lost the game.That was

21、_ I underestimated my competitors.thatwhythatbecause即学即练learning and practice1.He is careless and irresponsible.That was _ he was fired.2.He was fired.That was _ he is careless and irresponsible.3.The reason _ he was fired was _ he was careless and irresponsible.4.The reason why I was sad was _ he d

22、idnt understand me.whybecausewhythatthatSummary：1.表语从句的结构:主语+系动词+引导词+简单句2.引导词:从属连词：that,whether,as,as if/though,because 连接代词：who,what,which,whom,whose.+ever连接副词:when,where,how,why3.注意点:3）if 不引导表语从句。4）表语从句的虚拟语气。1）语序:连主谓。2）主语为reason时，引导词用that表语从句即学即练learning and practice1.What Alex really doubts is _

23、his mother will recover from the disease soon.2.The question is _ we can do to solve the problem in such a short time.3.The reason why he was late was _ he failed to catch the first bus.4.I want to be a teacher.Thats _ I want to be.whetherwhatthatwhat即学即练learning and practice5、The question is _ we c

24、an turn to for help.6、The most exciting moment was _ I was awarded the first prize.7、This is _ I want to say.whowhenwhat1.The fact was .事实是他没有做真正的努力。2.The question is .问题是这部电影是否值得看。3.she had known Millie for years.看起来好像她认识米莉已有好多年了。4.My advice is as often as possible.我的建议是你尽可能经常地练习说英语。Complete the se

25、ntences.that he didnt really trywhether the film is worth seeingIt seemed as though/ifthat you(should)practise speaking English5.Thats .那就是我第一次遇见她的地方。6.The problem is .问题是谁才真正适合做这份艰苦的工作。7.That is .那就是我想让你在这儿工作的原因。8.I was late for school this morning.last night.今天早上我上学迟到了。那是因为我昨晚睡得太晚了。where I first met herwho is really fit for the hard jobwhy I want you to work hereThats because I stayed up too late