I don't know how to do it为什么一定要有it,而what to do就不必有
I don't know how to do it为什么一定要有it,而what to do就不必有
英语人气：843 ℃时间：2019-10-24 02:54:48
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因为how是副词 不能作宾语 只能作状语 缺宾语 故用it 而what是代词 可以作宾语 所以 do后面无需 it how to do it 是 怎么做它 what to do 是 做什么
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