名词性从句专项复习及练习
（ 一 ）名词性从句的种类
在句子中起名词作用的句子叫名词性从句。名词从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、介词宾语、表语、同位语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。
汤圆的简笔画
主语从句
主语从句是在复合句中充当主语的从句
That price will go up is certain. Whether we go by train or by boat makes no difference.
What surprid us is that he lost in the game. When he will be back depends on the weather.
Watever he did is right. Whoever comes will be welcome.
名词性从句作主语也常用先行词it做形式主语，而将从句置于句末。例如：
It is not yet decided who will do that job. 还没决定谁做这项工作。
It is a pity that you misd the concert. 很遗憾你错过了那场音乐会。
宾语从句
宾语从句就是在复合句中作宾语的名词性从句 (及物动词，介词和形容词后)
We hope that you will enjoy your stay here. Don’t ask about what the meeting is for.
动词+ it +从句 （创新联盟 it没有任何意义 ）
I heard it that he had gone abroad. I hate it when people speak with their mouth full.
主语 + 谓语 + 形式宾语it + 宾补 +dim音乐术语宾语从句
I feel it a terrible thing that I have to get up so early. I took it for granted that you would stay with us.
表语从句现在完成时ppt
表语从句是在复合句中作表语的名词性从句，放在系动词之后
The reason was that he didn’t work hard. New York is no longer what it was ten years ago.
同位语从句
同位语从句就是在复合句中作名词的同位语的名词性从句。
He accepted the fact that she would never come back.
Do you have any ideas where we can get cheaper condhand car?
( 二 ) 名词性从句的连词
引导名词性从句的连接词； 引导名词性从句的连接词可分为三类：
连接词： that, whether ,if （不充当从句的任何成分）
连接代词： what, whatever, who, whoever, whom, who, which
连接副词： when, where, how, why
I. 名词性that-从句
1）由从属连词that引导的从句叫做名词性that-从句。That只起连接主句和从句的作用，在从句中不担任任何成分，本身也没有词义。名词性that-从句在句中能充当主语、宾语、表语、同位语和形容词宾语。例如：
主语：That he is still alive is sheer luck.蒸脸 他还活着全靠运气。
宾语：John said that he was leaving for London on Wednesday. 约翰说他星期三要到伦敦去。
表语：The fact is that he has not been en recently. 事实是近来谁也没有见过他。
同位语：The fact that he has not been en recently disturbs everyone in his office.
形容词宾语：I am glad that you are satisfied with your job.
2）That-从句作主语通常用it作先行词，而将that-从句置于句末。例如：
企业运营模式 It is quite clear that the whole project is doomed to failure.
It's a pity that you should have to leave.
用it作形式主语的that-从句有以下四种不同的搭配关系：
a. It + be +形容词+ that-从句
It is necessary that… It is important that… It is obvious that…
b. It + be + -ed 分词+ that-从句
It is believed that… It is known to all that… It has been decided that…
c. It + be +名词+ that-从句
It is common knowledge that… It is a surpri that… It is a fact that…
d. It +不及物动词+ that-分句时尚头像
It appears that… It happens that… It occurred to me that…
II. if, whether引导的名词从句
从属连词if, whether引导的名词从句是由一般疑问句或选择疑问转化而来的，因此也分别被称为yes-no型疑问句从句和选择型疑问从句，其功能和wh-从句的功能相同。例如：
主语：Whether the plan is feasible remains to be proved.
宾语：Let us know whether / if you can finish the article before Friday.
表语： The point is whether we should lend him the money.
同位语： They are investigating the question whether the man is trustworthy.
形容词宾语： She's doubtful whether we shall be able to come.
介词宾语： I worry about whether he can pass through the crisis of his illness.
III. 名词性wh-从句
由wh-词引导的名词从句叫做名词性wh-从句。Wh-词包括what, who, whom,. who, whoever, whatever, which, whichever等连接代词和where, when, how, why等连接副词。
1. what用法 １）what是连词，what 在从句中充当主语，如：what is needed，从句可充当：
主语 What is needed is time.
表语 This is what is needed.
宾语 I don’t know what is needed
２） what是连词，what 在从句中充当宾语，如：what he did，从句可充当：
主语 What he did surprid all of us.
表语 This is what he did.
宾语 I don’t know what he did.
３）what 是连词，what在从句中充当表语，如： what water is，从句可充当：
主语 What water is is known to us all. 水是什么是大家都知道的。
表语 What the little boy want to know is what water is.
小男孩想知道的是水是什么。
宾语 Everybody knows what water is. 人人都知道水是什么。
2. who用法 １） who是连词，在从句中充当主语，如： who broke the window ， 从句可充当：
桌球图片
主语 Who broke the window is not known yet.
表语 The problem is who broke the window.
宾语 I don’t know who broke the window.
２） who是连词，在从句中充当表语，如who he is ， 从句可充当：
主语 Who he is is being looked into.
表语 The problem is who he is.
宾语 I don’t know who he is.
３）who (whom) 是连词，在从句中充当宾语，如：who (whom) I know 从句可充当：
主语 Who I know has nothing to do with you.
表语 What she wants to know is who(m) I know.
宾语 She doesn’t want to know who(m) I know.
