题目

情态动词+have done 用法及意义
must have done need have done daren't have done
could never have done could have done

提问时间：2020-10-28

答案

must have done 一定做了某事（对过去的一种肯定推测）
need have done 本需要做某事（但实际没做）（表轻微的责备）
daren't have done = didn't dare do (过去）不敢做某事
could never have done不可能做了某事（对过去的一种否定推测）
could have done 本可以做某事（但实际没做） （表轻微的责备)