must have done用法

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/14 08:17:53

must have done用法
he said that the passenger （ B ）anaccident;otherwise he would have arrived by that time.
A must have
B must have had
C would have had
D should have had
麻烦高手解释一下

must 这个情态动词后面加动词原形有表“推测”的用法,如果是must have done就是表对“过去事情的推测”

must have done用法 must have done的用法 should/could/must/might have done用法? must have been done must have done should have done .would have done. must have done三者之间的意思和用法上关于 must have done. MUST have been done must have done must have been done/must be done where must the puma have come from 其中must have done是什么用法? must have done 和must have do would have done 用法