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语法小知识:主语从句概念解析

语法小知识:主语从句概念解析

名词性从句指充当名词成分的从句,下分很多类型,是英语学习的重点,可以说搞懂了名词性从句,你的英语水平就极大的提升了一个level,而主语从句则是名词性从句非常重要的一种类别,所以这次小编就为大家带来关于主语从句的讲解,快点来看看吧!

一. 概念:在句子中担当主语的从句就叫做主语从句,通常放在主句谓语动词之前或由形式主语it代替,而本身放在句子末尾。

主语从句使用陈述语序,其通常结构为“引导词 主语 谓语 其他成分", 但当连接代词同时充当从句主语时,其结构为“连接代词 谓语 其他成分”。

二. 引导词:

1. that引导

eg. That you are coming to London is the best news I have heard this long time.

2. whether引导

eg. Whether they would come to conference was a question.

3. 连接代词引导: who,whom, whose, what, which, whoever, whomever, whichever, whatever

eg. Whoever is top from wins the game when two matched players meet.

4. 连接副词引导: therefore, besides, otherwise, however, moreover, still, thus, meanwhile

eg. How this happended is not clear to anyone.

5. 关系代词型what引导

eg. What shoked me was that she never wash her own clothes.

三. 形式主语it:

1. 对关系代词型what引导的主语从句,可以使用形式主语。

eg. It is clear enough what he meant.

2. 如果句子是疑问句,则必须用带形式主语it的结构.

eg. Is it true that all of us need to to conference?

好了以上就是这次为大家带来的关于主语从句的知识点讲解,大家都学得怎么样呢?千万不要忘记之后的复习哦!

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