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1、精选学习资料 - - - - - - - - - 高中英语名词性从句具体讲解一 . 名词性从句考查的焦点主要有以下六方面1. 考查名词性从句的语序问题2. 考查引导词 that 与 what 的区分3. 考查 it 在名词性从句中作形式主语和形式宾语的用法4. 考查 whether 与 if 的区分5. 考查名词性从句中的疑问词 +ever 引导的名词性从句与 no matter+ 疑问词引导的状语从句的区分6. 考查名词性从句的虚拟语气问题二 . 名词性从句的含义及连接词名词性从句的含义 :在复合句中起名词作用的从句叫做名词性从句;句、宾语从句、表语从句和同位语从句;引导名词性从句的连接词可
2、分为四类:1. that(无含义,不充当成分)它包括主语从2. whether, if(有“ 是否” 的含义,但不充当成分)3. 连 接 代 词 : what, whatever, who, whoever, whom, whomever,whose, which,whichever.(在从句中做主语、宾语、表语和定语)名师归纳总结 - - - - - - -第 1 页,共 5 页精选学习资料 - - - - - - - - - 连 接副词:when, whenever,where,wherever, how, however,why (在从句中做状语)4. as if,as though,b
3、ecause 只引导表语从句)(不充当成分,在名词性从句中三 . 四类名词性从句语法要点1. 主语从句在整个句子中用作主语的从句叫主语从句;What he wants to tell us is not clear. 他要跟我们说什么,仍不清晰;It is known to us how he became a writer. 我们都知道他是如何成为一名作家的;Where the English evening will be held has not yet been announced.英语晚会将在哪里举办,仍没有宣布;it作形式主语:it代替主语从句作有时为防止句子头重脚轻,常用形式主语
4、形式主语放于句首,而把主语从句置于句末;It is clear that he is innocent in the accident. 很明显,他在这场事故中是无辜的;2. 宾语从句在整个句子中用作宾语的从句叫宾语从句;He has told me that he will go to Shanghai tomorrow. 他已经告知我他明天要去上海;名师归纳总结 - - - - - - -第 2 页,共 5 页精选学习资料 - - - - - - - - - We must never think that we are good in everything while others ar
5、e good in nothing.我们决不能认为自己什么都好,别人什么都不好;it 作形式宾语:在“ 主语 +谓语 +宾语 +宾补” 的句型中,假如宾语是从句的形式,就必需用it做形式宾语,把真正的宾语即宾语从句置于句末;We found it impossible that the so much work will be finidhed in one day.我们发觉一天之内完成这项工作不行能;3. 表语从句在整个句子中用作表语的从句叫表语从句;The fact is that we have lost the game. 事实是我们已经输了这场竞赛;That is why he di
6、dnt come to the meeting.那就是他为什么不到会的缘由;It looks as if it is going to rain. 看上去天要下雨了;This is because he has been working hard these days. 这是由于这些天他始终工作很努力;留意: because , as if 和 as though在名词性从句中只能引导表语从句;4. 同位语从句在整个句子中用作同位语的从句叫同位语从句;名师归纳总结 - - - - - - -第 3 页,共 5 页精选学习资料 - - - - - - - - - 同位语的含义:在句子中,假如有两
7、个名词,并且后一个名词是对前一个名词的说明说明,它们两个指的是同一个人或同一个物,那么,后面的名词就叫前面名词的同位语;例如: This is my friend, Tom.( Tom 是 my friend 的同位语;)可用于同位语从句的名词有 hope、idea 、informationadvice 、demand、 doubt 、 fact 、message、news、order 、problem 、promise 、 question 、 request 、 suggestion、 truth、wish 、word 等抽象名词;The news that we won the game
8、 is exciting. 我们赢得这场竞赛的消息令人兴奋;I have no idea when he will come back home.我不知道他什么时候回来;The thought came to him that Mary had probably fallen ill. 他想到可能玛丽生病了;同位语从句和定语从句的区分:that 作为关系代词,可以引导定语从句,充当句子成分,在从句中作宾语时可以省略; that 引导同位语从句时,起连词的作用,没有实际意义,不充当句子成分,一般不能省略;试比较下面两个例句 :I had no idea that you were here我不知
9、道你在这里;( that 无含义, that you were here 指的就是 idea ,所以是同位语从句,不能省略 that )Have you got the idea(that )this book gives you?这本书给了你想法吗?( that指的是 the idea,that引导定语从句,作宾语,可以省略)名师归纳总结 - - - - - - -第 4 页,共 5 页精选学习资料 - - - - - - - - - 四 . 连接词that在名词性从句中可以省略的三种情形1.it 做形式主语,that引导主语从句时It is said that he has been studying abroad. 据说他始终在国外学习;2. 动词宾语从句中 I thinkthat you have much to improve in English. 我认为你的英语需要提高的有许多;3. 形容词宾语从句中 I am afraid that I will be late. 唯恐我要迟到了;名师归纳总结 - - - - - - -第 5 页,共 5 页
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