It was very kind of you to do the washing?up,but you _______ it.a_英语解答

It was very kind of you to do the washing?up,but you _______ it.
a、mustn’t have done
b、 wouldn’t have done
c、 mightn’t have done
d、 didn’t have to do
为什么?

人气：229 ℃　时间：2020-03-26 22:59:28

解答

不可以选D,要选Amust not...have done.意为"本不必",即已经做了某事,而时实际上不必要请看常见的“情态动词 + have + 过去分词”的用法：一、“must + have + 过去分词”表示对过去发生的事情或状态进行推测,语气比...