（2019版）新人教版选择性必修第二册Unit 1Science and scientists 表语从句ppt课件.pptx

1、Predicative Clauses表语从句To learn the structure of predicative clause.To know how to judge the predicative clause.To master the conjunctions of predicative clause.定义结构和如何判断表从引导词注意点010203CONTENTDefinitionPART01The truth was that the water from the Broad Street pump had been infected by waste. predicati

2、ve clauseLead-in Read and AnalyzeThat he did not come to speak with you was what surprised me most.What surprised me most was that he did not come to speak with you. 主语（从句）主语（从句）subject连系动词连系动词linking verb表语（从句）表语（从句）predicative1. The definition of predicative clause.The question is who will do it.T

3、he question is difficult.在复合句中充当表语的从句叫表语从句。位于主句位于主句的的系动词系动词之后，对主语进行解释、说明，使主语的之后，对主语进行解释、说明，使主语的内容具体化。内容具体化。表语表语从句必须从句必须用陈述语序。用陈述语序。（ 表表 ）（ 表表 ）表语从句表语从句2. The structure of predicative clause.主语 + 系动词 + 引导词引导词 + 简单句This is why he did it.e.g.What I want to say is that I am tired.表语从句表语从句的判断The judgment

4、 of the predicative clause1. What I want to say is that I am tired.2. He was sent to the hospital. Thats because he was ill. 3. It sounds as if somebody was knocking at the door.4. The reason why he was late was that he missed the train this morning. Read and observe the predicative clause. Read PC

5、aloud.1.感官类系动词（sound,look,taste,smell,feel) )2.变化类系动词( (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The judgment of the predicative clause系动词后的成分为表语。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PART02The fact was that he

6、 had forgotten about it.Everything remained as it used to be in this room.She looks as if she were ill.The trouble was whether we could manage it ourselves or not.The problem is not who will go, but who will stay.This is how they overcame the difficulties.He missed the lecture. It was because his fl

7、ight was delayed.Predicative ClauseTask Two: Circle the conjuction of each predicative clause. Task One: Underline the linking verbs.连接词连接词连词连词: that, whether, as if, as though, because 连接副词连接副词: when, where, how, why, +ever连接代词连接代词: what, who, whom, whose, which, +ever引导词Conjunction words（在从句中不作成分）

8、（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:即学即练learning and practice1. This is _I want.2. My English is limited. This 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.5. T

9、he trouble is _ we are short of funds.6. My problem is _ coat is suitable for me.7. I d like to start my own businessthats _ I want to do if I had the money.8. What I want to know is _will support me.whatwherewhybecausethatwhichwhatwho注意点PART031. 表语从句和其他从句一样都用陈述语序：连词+主语+谓语（连主谓）。2. that引导表语从句引导表语从句时时

10、, 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, 不能省略。不能省略。表语从句的注意点The grammar rulers of the predicative clause e.g. One advantage of playing the guitar is that it can give you a great deal of pleasure. e.g. The trouble is that I have lost his address.表语从句的注意点The grammar rulers of the predicative c

11、lause3. 表语从句的引导词没有if !The question is if it is worthwhile to do it.The question is whether it is worthwhile to do it.只用whether ,不用if的情况 whether to do whetheror not 介词后的宾语从句。（介词后不用if) 从句：句首的主语从句，宾语从句，同位语从句。(if不能位于句首）单句改错。表语从句的注意点The grammar rulers of the predicative clause4 : 表语从句的虚拟语气My proposal is

12、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.1)在表示“一坚持（insist)二命令(order, command)三建议(advise, suggest, propose) 四要求(ask, require, request, demand)”的名词 advice, suggestion, request, proposal,idea 等后面的表语从句中，谓语动词用

13、“should + 动词原形”，should可省略表语从句的注意点The grammar rulers of the predicative clause2)as if/as though 引导的表语从句常跟在look, seem, sound, feel等后面语气： 若表示真实情况，用陈述语气。 若表示非真实情况，用虚拟语气。Dark clouds are gathering. It looks as if its going to rain.It sounded as if the night would never end. 表语从句的注意点The grammar rulers of t

14、he 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 everything in the world.He felt as if he had met this young lady for a long somewhere.即学即练learning and practice1. My suggestion is that we _ (go) t

15、o hospital at once.2. When a pencil is partly in a glass of water, it looks as if it _(be) broken.3. My proposal/idea is that we _(get) more people to attend the conference.4. The little girl talked as if she _(be) a grown-up.5. She looks as if she _(be) ten years younger.should gowereshould gethad

16、beenwere表语从句的注意点The grammar rulers of the predicative clauseSummary: 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.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

17、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 that you dont trust her. He was ill. Thats why he was sent to the hospital. 即学即练learning and practice1.He is careless and irresponsible. That was _ he was fired.2.He was fi

18、red. That was _ he is careless and irresponsible.3. The reason _ he was fired was _ he was careless and irresponsible.whybecausewhythatSummary：1. 表语从句的结构:主语 + 系动词 + 引导词 + 简单句2. 引导词: 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,why,.+ever3. 注意点:3）if

19、不引导表语从句。4）表语从句的虚拟语气。1）语序:连主谓。2）that引导表语从句时不能省略。表语从句Exercises1. The truth is _ we are lucky enough to have clean water whenever we want, but this is not the case for many people around the world.that3. His advice to his grandma is that she _ good use of her spare time. A. makeB. madeC. makesD. to mak

20、e2. This is _ my father has taught me - to always face difficulties and hope for the best.浙江月卷卷北京卷卷whatAshould make4. The amazing thing about the spring is _ the colder the temperature gets, the hotter the spring! that5. What puzzles Lilys friends is _ always has so many crazy ideas.2021新高考I卷卷2021天津

21、卷卷whyA: Absolutely ! You may not believe it, but that was _ happened at the initial stage of our groups research on developing a vaccine for malaria.B: Yes, it is. And it seemed _ all the theories were useful, but the fact was _ we couldnt persuade one another that one theory was better than another

22、.C: Exactly The problem was not about _ all our theories were equally good, but in deciding _ theory to depend upon.D. We realised that what we cared about was not _ aspect we needed to develop a theory in, but rather _ we can reduce the cost of a vaccine without reducing its effect!E. Youre right.

23、At last, we became focused on the key issue, which was _ we had to carry out the research in the first place.whatas ifthatwhetherwhosewhichhowwhyDavid is talking to Maria about their scientific research project. First complete Davids lines (A-E), using the words in the box. Then put Davids lines in

24、the correct order and practise the conversation.1. The reason why they were always poor was because they paid little attention to education.2. What made the school proud was more than 90% of the students had been admitted to key universities.3. The question is if he is able to do it alone.4. The hea

25、dmasters order was that all students finished homework before 8:00 p.m.单句改错。thatthatwhetherfinish 1. 我建议他应该更努力地学习。（suggestion)2. 我难过的原因是他不理解我。(the reason why.was that.)Translation.4. 那正是他对我生气的原因。(Thats why.)3. 那是因为他起的太晚了。(Thats because.)My suggestion is that he (should) study harder.The reason why I was sad was that he didnt understand me.Thats because he got up too late. Thats why he got angry with me.