—Did Mary come to the party? —I don't know.She__while I was out.A.might have come B.might come 为什么不能选B

问题描述:

—Did Mary come to the party? —I don't know.She__while I was out.
A.might have come B.might come
为什么不能选B

—Did Mary come to the party? 问的是mary昨天到过派对吗
相应的回答就是过去完成时 她也许去过当我离开后
might come 是虚礼语气 也许会来 语态情景不符

现在完成时。。。。

对过去进行推测,用might have gone

表示已经完成的动作 用现在完成时