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Ann returned the book to the library yesterday.改为一般疑问句后return要加s吗?
题目详情
Ann returned the book to the library yesterday.改为一般疑问句后return要加s吗?
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答案和解析
Did Ann return the book to the library yesterday?
不需要哦~因为does do did这类助动词后面都用原型哦~这里是过去所以用did
不需要哦~因为does do did这类助动词后面都用原型哦~这里是过去所以用did
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