【课件】Unit 1 Learning about language表语从句课件-2021-2022学年高中英语人教版（2019）选择性必修第二册

1、Period 3 Discovering useful structuresThe Predicative Clauses表语从句Unit 1 Science and ScientistsIn this class, you willidentify and summarize the form of the predicative clause;get to know the meaning of the predicative clause;use the predicative clause to talk about science and scientists.Review Revi

2、ew Review What kind of person is John Snow? John Snow is smart. John Snow is determined. John Snow is committed. predicative (表语)Predicative is used _ the linking verb.behindS+V+Plinking verb系动词 A sentence which is used as predicative is Predicative Clause表语从句.One theory was that bad air caused the

3、disease. The other was that cholera was caused by an infection from germs in food or water. The truth was that the water from the Broad Street pump had been infected by waste. It seemed that the woman liked the water from the pump so much that she had it delivered to her house.DiscoverPara.2Para.2Pa

4、ra.4Para.3It look as ifIt turned out that状态类：be 动词, seem, appear, keep, remain, stay, lie, stand.感官类：look, smell, taste, sound, feel 变化类：become, get, turn, grow, fall, come, go, run.(My blood ran cold.)终止系动词（主语已终止动作）：prove, turn out被证明是(要注意系动词的固定搭配,常见的有come true, fall asleep, fell ill, go bad, come

5、right, run wild, wear thin, turn nasty等。)Summary1Linking verbs 系动词Activity 2: Answer the following questions using the information from the reading passage as well as the predicative clauses. Example What was it that John Snow showed to the world? What John Snow showed to the world was _.how cholera

6、 could be overcomehow 意思为“如何”，在表语从句中充当状语Discover1. What was Snows discovery in two particular streets in London? Snows discovery in two particular streets in London was _ _that the cholera outbreak was so severe that more than 500 people died in ten days. that 无意义，在表从中不充当成分, 起连接作用，不能省略Discover2. Wha

7、t was Snow determined to find out during the 1854 outbreak of cholera in London? What Snow was determined to find out was _ _why the outbreak of cholera had caused over 500 deaths within ten days.why 意思为“的原因”，在从句中充当状语Discover3. What were the exact places Snow marked on the map? The exact places Snow

8、 marked on the map were _where all those who died had lived.where 意思为“的地点”，在表从中充当状语4. What was the finding that Snow announced? Snows finding was _ that the pump water carried cholera germs.that 无意义，在表语从句中不充当成分, 起连接作用，不能省略引导词在表语从句中充当的成分引导词备注主语who, what, which,whoever,whatever,whichever 宾语whom, who,

9、what, which,whoever,whatever,whichever表语whom, who, what, which定语whose, what, which状语when, where, why, how不充当成分that, whether, as if, as though, because 连接代词连接副词从属连词引导词Conjunction wordsSummary2根据从句是否缺成分、句意来选择What John Snow showed to the world was how could cholera be overcome. What John Snow showed to

10、 the world was how cholera could be overcomeRule 1 : 表语从句和宾语从句、主语从句一样，要用 陈述语序：主语+谓语。表语从句的语法规则The grammar rules Rule 2 : 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 doWhetheror not介词后的宾语从句从句：句首的主语从句，表语从句，同位语

11、从句表语从句的语法规则The grammar rules Rule 3 : 表语从句的虚拟语气My proposal is that we (should) start early tomorrow.I propose that we (should) start early tomorrow.It is proposed that we (should) start early tomorrow.在表示“建议，劝说，命令”的名词 idea, advice, suggestion, request, proposal 等后面的表语从句中，谓语动词用“should + 动词原形”，should可

12、省略表语从句的语法规则The grammar rules Rule 4 : as 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.表语从句的语法规则The grammar rules Rule 5 :当从句描述原因时：

13、主语为reason 时，引导词用that It, This, That 开头做主语，引导词用because She was late this morning. That was because she missed the early bus. The reason why he was late was that he missed the early bus.表语从句的语法规则The grammar rules Rule 6 :引导词that, because, why的区别：描述原因用that或because.描述结果用why The reason was that you dont

14、trust her.He was sent to the hospital. Thats because he was ill.He was ill. Thats why he was sent to the hospital.表语从句的语法规则The grammar rules 1.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 w

15、as careless and irresponsible.whybecausewhythat as if that what who when how why whose which whether A Absolutely. You may not believe it, but that was _happened at the initial stage of our groups research on developing a vaccine for malaria. whatPracticeB Yes, it is. And it seemed _ all the theorie

16、s were useful,but the fact was _ we couldnt persuade one another that one theory was better than another. C Exactly. The problem was not about _ all our theories were equally good, but in deciding_ theory to depend upon. as if thatwhetherwhich/what/whoseP5：3.Complete Davids lines (A-E), using the wo

17、rds in the box. 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. At last, we became focused on the key issue, which was _ we had to carry out the research in the firs

18、t place. which/whathowwhy as if that what who when how why whose which whether PracticeMaria: This mix of theory and data is one of the key characteristics of what we call science.David:_A_Maria: With your theoretical framework?David:_Maria: Deciding on a theory is definitely of critical importance.

19、David:_Maria This was when you should have calmed down and got down to doing some sold work.David:_Maria: So what happened in the end?David:_Practice思考：1.对话语篇有哪些衔接手段？2.如何选择，才能使对话进行下去？衔接手段：logical connector逻辑纽带grammatical connector语法lexical connector词汇Maria: This mix of theory and data is one of the

20、key characteristics of what we call science.David:_A_Maria: With your theoretical framework?David:_Maria: Deciding on a theory is definitely of critical importance.David:_Maria This was when you should have calmed down and got down to doing some sold work.David:_Maria: So what happened in the end?Da

21、vid:_Practicelogical connector逻辑纽带Maria: This mix of theory and data is one of the key characteristics of what we call science.David:_A_Maria: With your theoretical framework?David:_Maria: Deciding on a theory is definitely of critical importance.David:_Maria This was when you should have calmed dow

22、n and got down to doing some sold work.David:_Maria: So what happened in the end?David:_BCEPracticelexical connector词汇纽带Maria: This mix of theory and data is one of the key characteristics of what we call science.David:_A_Maria: With your theoretical framework?David:_Maria: Deciding on a theory is d

23、efinitely of critical importance.David:_Maria This was when you should have calmed down and got down to doing some sold work.David:_Maria: So what happened in the end?David:_BPracticegrammatical connector语法纽带Maria: This mix of theory and data is one of the key characteristics of what we call science.David:_A_Maria: With your theoretical framework?David:_Maria: Deciding on a theory is definitely of critical importance.David:_Maria This was when you should have calmed