不可以.eg：What are they?他们是做什么的?
I don't know what they are.我不知道他们是做什么的.
Do you know what they are?你知道他们是做什么的吗?
前者只能用于问句,后者都可以
what are they和what they are的区别是什么?可以混用吗?
4个回答
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