题目

we _____ have told her the truth英语选择题,
选择哪个麻烦解释原因
our motherworried about us very much
we should have told her the truth.
A.must Bshould

提问时间：2020-08-03

答案

B.should
咱妈特别担心咱们.
我们早先应该把实情告诉她的.
should have done用法如下,本题是第2种用法,指本该发生而实际上未发生的情况.
must have done只有推测过去已经发生的情况的用法,在此处不和题意.
should have done只用于谈论过去情况,主要有两个用法：
■用于推测过去已经发生的情况.如：
He should have arrived by now.此时他本该到了.
■用于指本该发生而实际上未发生的情况.
You should have told me so before.你早就应该告诉我.