2020高中英语 Unit19（3）词性从句学案 北师大版选修7

Unit 19 Language(3)GrammarNoun Clause(a)Tips: Action speaks louder than wordsLearning aims(学习目标):A(层次): 了解名词性从句的定义以及种类B:掌握名词性从句的种类及定义，能做出准确的判断C,D:掌握名词性从句的引导词:连接词，连接代词，连接副词能针对不同的名词性从句选择正确的引导词，并能判别引导词在从句中所充当的语法功能Important and difficult point: 如何针对不同的名词性从句选择正确(学习重点、难点) 的引导词Learning procedures(学习过程):Step Lead-in (A级)1.His job is important.2.This is his job.3.I dont like his job.4.I dont know about the man, Mr. White.以上名词在句中分别作 语、 语、 语和 语5.What he does is important6.This is what he does every day7.I dont like what he does every day.8.I dont know about the fact that he is a teacher.在复合句中起名词作用的从句叫名词从(NounClauses）。以上划线的句子在复合句中分别担任 语、 语、 语和 语，因此根据它们在句中不同的语法功能，名词从句又分别成为 语从句、 语从句、 语从句和 语从句。Step 判断以下划线部分分别为何种名词性从句。(B级)1.At lunch time, the radio weatherman reported the mist would become a thick fog in the afternoon. （ ）2.The truth is that the fog is too thick for the bus to run that far.（ ）3.What surprised me most was that the old man couldnt see anything. （ ）4.The fact that Polly didnt ask for the mans name is a pity. （ ）5.How we can help the twins will be discussed at the meeting. （ ）6.Thats why I was late . （ ）7.Whoever comes is welcome. （ ）A.主语从句 B.宾语从句 C.表语从句 D.同位语从句以上划线部分的名词性从句都为 （A.陈述语气 B.虚拟语气 C.疑问语气），斜体字单词that,what,how,why,whoever都为引导词（连接词）.想一想名词性从句的结构为 (D级)Step 名词性从句 (C,D级)1.主语从句1 )That he will succeed is certain .2 )Whether he will go there is not known .3) What he said is not true .4 ) Where he hid the money is to be found out .5) Whoever comes is welcome.6) How we can help the twins will be discussed at the meeting.7 )When theyll start the project has not been decided yet.为避免主语冗长,句子头重脚轻,经常用 作形式主语,主语从句放在后面作 的主语.eg.1 )It is certain that he will succeed.2 )It is not known whether he will go there.3 )It has not been decided yet when theyll start the project.2.宾语从句1) She did not know what had happened.2) I am afraid (that) Ive made a mistake3)Most of us have to rely on what we can learn at school as part of the the school curriculum.宾语从句在句中充当 成分，常跟在 词、 词和词之后。注意.Whether和if都可以引导宾语从句当whether后紧跟or/or not时,不用if.eg.I dont know whether I will stay or not.介词后面的宾语从句不能用if.eg.I worry about whether I hurt her feeling.3.表语从句1)The question is whether we can rely on him.2)My problem is that I cant make myself heard .3)He looked as if he was going to cry .4)Thats why I was late .表语从句:在句中充当 成分，一般放在 词之后，对主语进行解释说明。4.同位语从句1) The chances that we will all have the opportunity to live in an English-speaking country are small.2) Word came that Napoleon himself was coming to inspect(视察) them .同位语从句在句中充当 成分，其一般跟在一些抽象名词（ idea， belief ， fact ，truth ，problem ，news 等）后面，对名词作进一步解释说明Step 名词性从句的引导词 (D级)连接词:that（that引导 从句通常可省略）， whether，if （只引导 从句）连接代词:who, what, which, whoever, whatever,连接副词:when ，where ，why ，how注