英语题9607

来源：百度知道编辑：UC知道时间：2024/05/31 04:33:44

They ______ the film at that time
A. may see
B. mustn't see
C. must have seen
详解

c,对过去时间的推断，用情态动词的完成时

一定是C

c must have done sth.表示猜测 ,

c,对过去行为的推断，用情态动词的完成时 must have done sth.表示猜测 , 过去一定做过某事

C 应该是过去式A错否定推测应该用cannot~~~在那时听你已经看过那电影了