高三 名词性从句复习学案
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2019年高中英语高三年级专属讲义
课题：名词性从句
要点：一.主语从句
二.表语从句
三. 宾语从句
四.同位语从句
一、本节课知识点
知识点一、关联词
名词性从句的关联词主要有三类：
从属连词：that（无词义，不做成分）, if (是否，只能引导宾语从句) whether（是否）；
连接代词：who (谁)，whom（谁），whose（谁的），what（什么），which（哪一个、哪一些）；
连接副词：when (什么时候)，where（什么地方），why（为什么），how（怎样）。
知识点二、主语从句
主语从句定义：在句子中担当主语的是一个从句，这个从句就叫做主语从句。
1. 从属连词引导的主语从句
从属连词：that & whether
1). that引导
例句：
That he is still alive is a wonder.
That she became an artist may have been due to her father’s influence.
*引导词that有时可以省略，有时则不能，若that引导的主语从句直接位于句首，则that不能省略，若that引导的主语从句位于句末，而在句首使用了形式主语it，则that可以省略：例句：
That you didn’t go to the party was a pity.
It was a pity (that) you didn’t go to the party.
2). whether引导
例句：
Whether it will do us harm remains to be seen.
Whether they would support us was a problem.
3). 一般情况下,往往使用先行it结构，即用it作形式主语，而把that从句放到后面，这时，在
口语中，连词that有时则可以省略。所以上述两句可以改为：
常使用先行it结构,用that从句作主语的句子有下列几个句型：
(1). It + be + 形容词+ that从句：
It is clear that he was telling the truth.
(2). It + be + 名词词组+ that从句：
It’s a pity that you can’t go with us.
(3). It + 及物动词+ 宾语+ that从句：
It worried her a bit that her hair was turning grey.
(4). It + be + 过去分词+ that从句：
It is said that he has been there many times.
(5). It + seem/happen/appear等不及物动词+ that从句：
It seems that he has lost something.
2. 连接代词引导的主语从句
连接代词：who, whoever, whom, whose, what, whatever, which, whichever
例句：
Whoever is top from wins the game when two matched players meet.
Whichever you want is yours.
What we need is money.
Whom the watch belongs to is unknown.
Whatever you did is right.
3. 连接副词引导的主语从句
连接副词：when，where，how，why
例句：
When we arrive doesn’t matter.
Where I spend my summer is no business of yours.
How this happened is not clear to anyone.
知识点三、表语从句
表语从句（Predicative Clause）就是用一个句子作为表语。说明主语是什么，由名词、形容词或相当于名词或形容词的词或短语充当表语。
1. that，whether引导的表语从句
例句：
The trouble is that I have lost his address.
The question remains whether they will be able to help us.
2. wh-和because引导表语从句情况
连接代词who, whom, whose, what, which, whoever, whatever, whichever
连接副词where, when, how, why
例句：
That's because he didn't understand me. （That's because…强调原因）
That's why he got angry with me.（That's why…强调结果）
The problem is who we can get to replace her.
The question is how he did it.
What I wonder is when he left.
That's what he wants.
This is where they once lived.