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如何学习主语从句

用作主语的从句叫主语从句,它是名词性从句之一,主语从句要用陈述语序,且主语从句后的谓语动词用第三人称单数,那么我们如何学习主语从句呢?
工具/原料

网络

方法/步骤
1

引导主语从句的连接词有从属连词that, weather, 连接代词who, what, which等等,连接副词when, where, how, why等。主语从句在句首时,必须由连接词引导,不能省略这些连接词

2

that引导主语只起引导作用,本身无实际意义,在主语从句中不充当任何成分,但不能省略,由weather及其他连词引导的主语从句放在句首、句后都可以

3

连接代词引导的主语从句,例如what seems easy to some people seems difficult to others, which side will win is not clear

4

连接副词引导的主语从句,例如why he did it remains a mystery. how he become a great scientist is known to us all

5

主语从句可以前置,也可以后置,用it作形式主语时,须把主语从句放在句末,常用下面几种句型:it+be+表语(名词,形容词,过去分词)+主语从句

6

也包括it+不及物动词+主语从句以及it+及物动词(被动语态)+主语从句等句型,例如it has been decided that the exhibition will not open on sundays.

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