W:Was the movie as good as you expected?
问题描述：
W:Was the movie as good as you expected?
M:It was a waste of time and money.We should have stayed at home.
Q:How does the man feel about the move?
(We should have stayed at home)这句为什么用完成时,是什么时态的完成时
答
这不是什么时态
而是should have done,表示本应该做某事