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

1、表语从句表语从句The Predicative Clause授课：希希授课：希希选择性必修二选择性必修二 Unit 1 Grammar一、表语从句的定义：一、表语从句的定义：在复合句中在复合句中,位于位于系动词系动词之后充当之后充当表语表语的名词性从的名词性从句称句称表语从句表语从句。表语从句和主语指同一内容，它对表语从句和主语指同一内容，它对主语进行主语进行解释、说明解释、说明，使主语的内容具体化。，使主语的内容具体化。The question is who will do it.判断表语从句主要的依据就是在系动词后面。判断表语从句主要的依据就是在系动词后面。系动词系动词表语从句表语从句名词

2、短语作名词短语作表语表语表语从句表语从句表语从句表语从句English is her favorite subject.English is what she loves most among all subjects.请列举：系动词有哪些？Be动词：动词：_感官系动词：感官系动词：_保持系动词：保持系动词：_变化系动词：变化系动词：_表象系动词：表象系动词：_am is are were was befeel look sound smell taste become grow turn go getkeep stay remain look seem appear 二、表语从句的构成：二、

3、表语从句的构成：What I want to say is that I am tired.引导词引导词简单句简单句从属连词：从属连词：that/whether/as if/as though 连接代词：连接代词：who/whose/which/what连接副词：连接副词：when/where/why/how/because（系动词）（系动词）+引导词引导词+简单句简单句引引导导词词不管用什么引导词，从句必须是陈述句语序，也就是我们说的主谓（主语在谓语前面）二：表语从句的引导词分类第一类：从属连词1._1._引导表语从句，在从句中的意义引导表语从句，在从句中的意义_,_成分，成分，_省略。省略

4、。1)The trouble is I have lost his address.2)My advice is we should get there by train.2._引导表语从句，在从句中的意义_,_成分，_省略。注意:if不能引导表语从句！1)The question is that boy will turn up in time.2)My concern is you can do the work well.不可以不可以是否是否不作不作不可以不可以thatwhether无无不作不作3._引导的表语从句常置于连系动词seem，appear,look，taste，sound，f

5、eel等之后。1)It looks a storm would come soon.2)It sounds someone is knocking at the door.第二类：连接代词和连接副词4._引导的表语从句_强调原因，意为“那是因为.”_强调结果，意为“那是.的原因”1)Thats he didnt understand me.2)Thats he got angry with me.as if/as thoughbecause,whyThat is because.That is why.5.5.特殊疑问词引导的表语从句特殊疑问词引导的表语从句_：who,whom,whose,w

6、hat,which,whoever,whatever,whichever_：where,when,how,why(状语)1)The problem is we can turn to for help.2)That was she did this morning.3)My strongest memory is I attended an American wedding.4)The question is he did it.关系代词关系代词关系副词关系副词难点：注意下列表语从句中what,where,how,why 的译法3.This is where Lu Xun once lived

7、.4.That was how they won the match.5.This is why she got up so early this morning.这就是鲁迅曾经住过的地方地方.他们就是这样这样赢得这场比赛的.这就是她今天早上起得这么早的原因原因.This is what.This is where This is how This is why.This is because.This is when.这就是的地方的地方这就是的方法的方法/这样这样这就是的原因的原因这就是什么事什么事/什么样子什么样子1.The question is what we should do to

8、 make it better.2.Tom is no longer what he used to be.问题就是我们应该做什么做什么来使它更好Tom 不再是他以前的样子的样子。这就是因为因为这就是的时候的时候如何正确选择引导词？如何正确选择引导词？根据句子意思选择。根据句子意思选择。1.我们就是这样克服困难的.2.那就是他昨天缺席的原因.3.这就是我们上星期碰头的地方.This is how we overcame the difficulties.That is why he was absent yesterday.This is where we met last Sunday.Pr

9、acticeFigure out the functionWhat John Snow showed to the world was that cholera could be defeated.主从主从表从表从What.is/was that1.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

10、 are short of money.5.What we want to know is we can learn English well.thatwhetherTask1seethathow1.The question is _ we will have our sports meet next week.A.that B.if C.when D.whether2.The reason why he failed is _ he was too careless.A.because B.that C.for D.because of3.That is _ Lu Xun once live

11、d.A.what B.where C.that D.why4.The problem is _ to take the place of Ted.A.who can we get B.what we can get C.who we can get D.that we can getDBBCTask25.What I want to know is _ he likes the gift given by us.A.that B.if C.whether D.不填不填6.She looked _ she were ten years younger.A.that B.like C.as D.a

12、s though 7.I fell sick!I think it is _ you are doing too much.A.why B.when C.what D.because8.He was born here.That is _ he likes the place so much.A.that B.what C.why D.howCDDCTask31.The question is _ the film is worth seeing.2.Thats _ he didnt come yesterday.3.The problem is _ we can get enough food.4.The book looked _ it had been out in the rain.5.This is _ we should do.6.What the police want to know is _ you entered the room.whetherwhyhowas if/thoughwhathow/when/why/whether