they are doing housework.(分别改成一般疑问句和否定句)要写出原因!
问题描述:
they are doing housework.(分别改成一般疑问句和否定句)要写出原因!
答
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.谓语是什么?在这个句子里are就是谓语动词