是带有疑问词的不定式
what to do 和when to do it是什么结构
3个回答
相关问题
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what to do和how to do it和when to do it中何时有 it?
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what to do和how to do it
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Nobody told us 后填什么?A 、 what to do it ,B、how to do ,C、 when
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they know when (do what/what to do/to dowhat/wha
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what to do与when to do的区别
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what to do about it 还是 how to do about it