【英语】He must have watched the match yesterday,_____ (didn't / haven't) he?为什么?

问题描述:

【英语】He must have watched the match yesterday,_____ (didn't / haven't) he?为什么?

didn't
这里句子中的must have done 是“肯定已经做了……”的特殊结构,主语he的时态是过去式,而不是完成时.
所以haven't是一个陷阱.不要上当咯~