用must have been/done或can*t have been/done 改写句子

must have been done must have done 用must have been/done或can*t have been/done 改写句子 must have been done/must be done求解两者异同 must have been与must have done的区别? have done 和gave been done的用法last night it must have been rained为什么错 雨是被下的,所以我觉得应该用have been done. can't have been和can' have done有什么区别或者must have been和must hane done;may have been和may have done must have been doing与must have been done都表示推测,有什么区别呀? 他一定是被谋杀的.英语如何说?是用must have been done 有must/could/can/may/maight have been done吗 could/should/must/.加have done和have been done区别 can be done was done could be done must have been done will be done have been done用这些,每个造一个句子.上面的打错了can be donewas donecould be donemust have been donewill be donehave been done since前用have done 还是have been done MUST have been donemust have been doing must have been +名词must have done以上的区别还有是否有must have been done 的用法 和区别EG1 I must have been sleeping 2 your dress must have been expensive.3 I didn't hear the phone,I must have to have been done 怎么用 will have been done怎么用 have done.have been done .had done.had been done 有什么区别?怎么用?有什么结构? 不是must做情态动词对过去推测用must have done,又是进行时,用must have不是must做情态动词对过去推测用must have done,又是进行时,用must have been doing么?百思不得其解. She must have been a beauty in her day.这句的have been 怎么理解啊,不懂.have been 不是后面+done 所有的have been.