what to do和how to do it和when to do it中何时有 it?

what to do和how to do it和when to do it中何时有 it?
为什么how to do it中有it而what to do中没有?还有是 when to do还是when to do it?还有别的疑问词也是这样的吗?

被风吹过的夏天1 1年前已收到1个回答举报

ywb26 幼苗

共回答了14个问题采纳率：100% 举报

do是及物动词,一定得跟宾语.所以有when to do it 以及how to do it,那你肯定又问,那为什么what to do 后边没有,do 不是及物的吗?那是因为what 就是do的宾语,提前了,所以后边没有it.做什么做什么,那个当“什么”讲的“what"提前了,所以后边没it了

1年前

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