The lazy boy must have been dismissed last week,( ) he?A.hasn't B.haven't C.doesn't D.didn't

问题描述:

The lazy boy must have been dismissed last week,( ) he?A.hasn't B.haven't C.doesn't D.didn't
到底选哪个?

答案选D.didn't
反意疑问句,从last week 可以判断这里只有D.didn't正确最佳答案是was't吗当must+have done表示对过去的情况进行推测(一般句中有明确的过去时间状语),问句要根据陈述部分谓语的情况用“didn't+主语”或“wasn't/weren't+主语”;如果强调动作的完成(一般没有明确的过去时间状语),问句要用“haven't/hasn't+主语”。   She must have read the novel last week,didn't she?   她上星期一定读了这本小说,是吗?   You must have told her about it,haven't you?   你一定把这事告诉她了,是吗?恕我愚昧,was‘t是最佳的吗?是的