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名词性从句之主语,同位语,表语

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名词性从句之 主语从句,同位语从句,表语从句 1. 主语从句介绍: When we will finish the work is still a problem. =It’s still a problem when we will finish? Whether she will come or not makes no difference = it makes no difference whether (if) she will come or not. That he survived the accident is a miracle = it is a miracle that he survived in the accident. Note: 形式主语 it 引入: It is too difficult for me to understand the sentence It is too easy to solve the problem It’s funny to play basketball. It 可引导的主语从句 1. it +名词+从句 it is a fact that he didn’t pass the exam. 2. It+形容词+从句 It is strange that he failed to pass the exam 3. It+不及物动词+从句 It seems that he likes eating bananas. 4. It+过去分词+从句 It is said that he has passed the exam 5. 其它 It doesn’t matter if you don’t pass the exam.

2. 表语从句介绍
1 表语介绍 The book is on the desk (prep) You looks beautiful (adj) This is a book (n) 2.表语从句介绍 It seems that it is going to rain This is how Jane lives. The reason of his not coming is that he was ill. The problem is whether you love her.

3. 同位语从句介绍 同位语
1. 同位语介绍 We both have black hair and black eyes. This is a photo of me and my twin sister LiuYing 2. 同位语从句介绍 定义:同位于从句用于对名词作进一步解释,说明名词的具体内容。 The news that we are invited to the meeting is exciting. He got a message that the manager couldn’t see him that afternoon.

主语表语同位语从句注意事项

一、主语从句 主语从句
1.定义:若处在主语的位置上是个句子,那么这个句子就叫做主语从句。 2.注意事项: a. 在主语从句中,任何引导词都不可以省去。 在主语从句中,任何引导词都不可以省去。 【例】That her hair is turning grey worries her. b. 在主语从句中位于句首 位于句首, 在主语从句中位于句首,不用 if,用 whether。 , 。 【例】Whether he will come or not is not clear.(true) If he will or not is not clear.(false) c. 主语从句作主语时,谓语动词用单数。若谓语动词为两个或两个以上时,则用复数。 【例】1.Where we will have a holiday hasn’t been decided. 2.Where we’ll go picnicing and how we will go aren’t clear. d. 主语从句作主语时,*惯上用 it 作形式主语,而将主语从句后置。但由 what,whatever,whoever 引导 的主语从句,没有这个*惯。 【例】1.It’s very clear that the boy was seriously ill. 形式主语 真正的主语 2.It’s uncertain whether we’ll have a meeting today. 3.It hasn't been decided when they will leave for(前往) New York. e. 以 it 作形式主语,把主语从句后置的常见句型有: It's certain/uncertain that… …肯定…/不确定…… It's likely/possible/probable that… 有可能…… It's a pity/shame that… 很可惜/很遗憾…… It's no surprise that… 毫不奇怪/很正常…… It's said/reported/thought/believe that… 据说/据报道/大家认为/人们相信…… It happens that… 碰巧……

二、表语从句
1.定义:若处在表语的位置上是个句子,那么这个句子就叫做表语从句。 2.注意事项: a. 引导表语从句的任何词都不可以省( 偶尔可以省去) 引导表语从句的任何词都不可以省(在口语中 that 偶尔可以省去) 。 【例】The truth is (that) I have never been there. b. 在表语从句中,不用 if,用 whether。 The problem is whether she can go alone. c. as if(=as though)可以引导表语从句。 【例】It looks as if it’s going to rain. The girl seems as though she has cried. d. 有争议的 because:有的语法家叫之表语从句,有的则称之为强调句的省略。 【例】—Why was he late? —It was because his bike was broken. e. reason 不能和 because 连用,要用 that 代替。 【例】The reason why he didn’t come was that he was ill.

三、同位语从句
1.定义:若处在同位语的位置上是个句子,那么这个句子就叫做同位语从句。 2.注意事项: ①同位语从句要放在某些名词之后,用来解释或说明这些名词的内容,常见的有: fact,news,hope,promise,idea,truth,suggestion,thought,order,question,problem,belief,doubt, fear,word(n. [U]消息),possibility。 在同位语从句中, ②在同位语从句中,不用 if,用 whether。 , 。 ③常用来引导同位语从句的连词有:that,whether,how,when,where,what。

④为了保持句子*衡,有时同位语从句会和它前面的名词分开。 【例】An order has come from Berlin that no language but German should be taught in the schools of France.(避 免头重脚轻) 引导同位语从句的任何词都不可省。 ⑤引导同位语从句的任何词都不可省 ⑥注意区分定语从句和同位语从句。 定语从句:用来修饰其前面的名词,关系词、代词、名词在句中作成分; 同位语从句:用来说明其前面的名词的内容,引导词在从句中不作成分。 【比较】1.The news (that/which) I heard is true.(定语从句) The news that our team won is true.(同位语从句) 2.The suggestion that he put forward was turned down. He put forward the suggestion that the meeting (should) be put off. 3.I have no idea when he will come back. 4.The man can't answer the question how he got the money. 5.He expressed the hope that they could come to China again next year. 6.My mother made a promise that she would buy me a new computer. 【补充】1.Whoever breaks the law will be published. 2.Whoever says that is a liar.

等引导名词性从句,只能引导状语从句。 注:不可用 no matter who,no matter what 等引导名词性从句,只能引导状语从句。 ,




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