严重声明:
名词从句共有四种:主语从句、表语从句、宾语从句和同位语从句。今天小编就讲讲主语从句的知识复习点,具体如下:
主语从句是在复合句中充当主语的从句,通常放在主句谓语动词之前或由形式主语it代替,而主语从句本身放在句子末尾。引导主语从句的连接词有that,whether,what,who,which,how,why,when,where等。
When the conference is to beheld has not been decided.
会议什么时候召开还没有决定。
That the sunrises in the east is well known to all of us.
太阳从东方升起,这是我们大家都知道的。
注意:1.主语从句的连接词that不同于其他的连接词, 它不充当句子的成分, 只是单屯的连接词,通常不可以省略。从句可以置于句首,也可以用it作形式主语,而把真正的主语从句置于句尾。
That the driver could not control his car was obvious.
司机不能控制他的车子是很明显的。
→It was obvious that the driver could not control his car.
2.if不能用在主语从句中, 而whether可以。
Whether he left(or not) is unknown.
他是否离开了还不清楚。
3.当主语从句作主语时,谓语动词一般用第三人称单数形式。
What we need is more time and money.
我们所需要的是更多的时间和金钱。