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they are doing housework.(分别改成一般疑问句和否定句)要写出原因!

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they are doing housework.(分别改成一般疑问句和否定句)要写出原因!
they are doing housework.(分别改成一般疑问句和否定句)要写出原因!
Are they doing housework?把疑问词提前就可以了
They aren't doing housework.在谓语动词后加not就行了.
再问: 谓语是什么?
再答: 在这个句子里are就是谓语动词