... ... 名词性从句
在句子中起名词作用的句子叫名词性从句 (Noun Clauses）。 名词性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、表语、同位语、介词宾语等，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。
根据从句在句子中的功能分 根据从句的性质分
定语从句 形容词性从句
主语从句
宾语从句 名词性从句
表语从句
同位语从句
状语从句 副词性从句
第一节知识点讲解
一．【主语从句】
顾名思义，主语从句在句子中作主语。有时本身出现在主语的位置上，也有时出于句子结构的考虑退到句子的尾
部，前面用形式主语 it 代替。从句作主语时，谓语动词一般为单数形式。如 :
What I saw was beyond any verbal description.
That his hair was turning grey worried him a bit.
Why the company denied the contract is still unknown.
When and where the government will build a city square is under discussion.
It is pretty annoying that a small part of the machine is missing.
It remains to be seen whether the new novel will be well received.
Tips: 主语从句的 that 绝对不能省去。因为句子是不能做主语的，故用 that 引导。若去掉则没有了主语，而宾语从句的
that 可省。
主语从句： That he is right is known to all of us.
宾语从句： We all know (that) he is right.
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名词性从句
一、概述
在句子中起名词作用的从句称为名词性从句。名词性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、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词性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。
二、名词性从句的引导词
1、连接代词：who, whom, whose, what, which, whoever, whatever
有词义，在从句中担任成分，如主语、表语、宾语、或定语等。
2、连接副词：when, where, why, how等有词义，在从句中担任成分，作状语。
3、从属连词: that, whether, if, as if, because (as if, because 只引导表语从句)
三、用法详解
（一）主语从句
1、主语从句用连接代词、连接副词和从属连词that, whether引导。that不可省略。
That you don’t like him has nothing to do with me.
Whether John can do the experiment remains a question.
Who will be sent abroad to further his studies is not announced.
What surprised me most was that such a little girl can play the violin
so well.
2、当主语过长时，常常用it作形式主语，而把真正的主语从句放在主句后面。常用句型有：
1)It +be +形容词（true, possible, certain, likely, surprising, strange,
important…）+ that从句
It’s certain that she will do well in the exam.
高中英语名词性从句讲义(超详细版)
一．定义：
在句子中起名词作用的句子叫名词性从句 (Noun Clauses）。 名词性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、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词性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。
1. His words are true. What he said is true.
2. The dog sensed something good. The dog sensed that there was something good nearby.
3. These are his words. These are what he said.
4. My Maths teacher, Mr He, is a kind person. The news that the plane had crashed made us sad.
二．引导名词性从句的连接词
连词：在从句中不充当成分，只起连接作用 that, 无实义
whether, if 是否
as if \ as though 似乎，好像
连接代词：有词义，在句中担任主语，表语，定语或宾语。 what, 什么 who, 谁
whom, 谁，作宾语 whose, 谁的 which, 哪一个
whatever, whoever……也可以引导。 连接副词：有词义，在句中担任状语。
when ,什么时候 where, 什么地方 why, 为什么 how ,怎么样
how many, how much, how often
三．主语从句
1. 作句子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，还不清楚。
(完整word版)高中英语语法总结-名词性从句
名词性从句
在句子中起名词作用的句子叫名词性从句(Noun Clauses）。 名词性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、表语、同位语、介词宾语等，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。
根据从句在句子中的功能分 根据从句的性质分
定语从句 形容词性从句
主语从句
名词性从句 宾语从句
表语从句
同位语从句
状语从句 副词性从句
第一节 知识点讲解
一．【主语从句】
顾名思义，主语从句在句子中作主语.有时本身出现在主语的位置上，也有时出于句子结构的考虑退到句子的尾部，前面用形式主语it代替.从句作主语时，谓语动词一般为单数形式。如:
What I saw was beyond any verbal description。
That his hair was turning grey worried him a bit。
Why the company denied the contract is still unknown。
When and where the government will build a city square is under discussion。
It is pretty annoying that a small part of the machine is missing.
It remains to be seen whether the new novel will be well received.
Tips: 主语从句的that绝对不能省去.因为句子是不能做主语的,故用that引导。若去掉则没有了主语，而宾语从句的that可省。 (完整word版)高中英语语法总结-名词性从句
