问个主语从句的问题

a30024300 · 发表于 2012-12-3 17:05:47

今天刷PREP看到一个问题
1. 以who, why, how, whether或that引导主语从句，谓语动词用单数

例：Why she did this is not known.

这个例子没人说服力啊，因为she就是单数嘛，而且this也是单数·······
why students did these is(are) not known.
这里也是用is吗？还是用are

joyzhang1990 · 发表于 2012-12-3 17:38:27

还是用is,因为是why she did this或者是why students did these都是相当于一个名词，做主语。所以还是用is。
但是what her mom left for her are three books.这里要用are, 由后面的名词的单复数决定~

a30024300 · 发表于 2012-12-3 22:28:32

还是用is,因为是why she did this或者是why students did these都是相当于一个名词，做主语。所以还是用is。
但是what her mom left for her are three books.这里要用are, 由后面的名词的单复数决定~

-- by 会员 joyzhang1990 (2012/12/3 17:38:27)

谢谢你，明白了

倾倾倾 · 发表于 2013-8-7 22:57:37

joyzhang1990 发表于 2012-12-3 17:38
还是用is,因为是why she did this或者是why students did these都是相当于一个名词，做主语。所以还是用is ...

那Who are singing are/is two girl.这里谓语是用are 还是is?

问个主语从句的问题

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