He must have been的用法.He must have been它的后面可以跟哪几种类型的词语?如果我想要表达“那时他一定在家里”。He must have been at home.must have been 有must had been 这种说法吗？如果有表达的又是什么

He must have been的用法.He must have been它的后面可以跟哪几种类型的词语?如果我想要表达“那时他一定在家里”。He must have been at home.must have been 有must had been 这种说法吗？如果有表达的又是什么 must be的用法和must have been的用法是什么? can't have been和must have been每一个的用法 关于must have been的用法must have been用法是作对过去的事情猜测,例如she must have been a singer但是如果有一句话是这样,he must have noticed me,我应该翻译成“他曾一定是注意到我了”还是翻译成“你本 must have/ must have been的区别 have been 的用法? 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 He can't have been.He must have been.不是说单三用has吗?这里怎么用的have? must have donemust have done 的用法详细说明.可以归结为虚拟语气里面的么?must have been down 是must have down 的被动语态么 must 作为情态动词的用法问题?试比较以下的句子有何不同:句一:He must have been in his office last night.句二:You must hand in the report immediately. 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. He must have been ill,___ he?如何变反意疑问句 i think he must have been a mechanic,中的must和have been是什么词啊? have been+adj的用法 have ever been 的用法? have been on的用法 must be和must have been有什么区别he must have been sleeping.为什么这里要用must have been而不用must be must have been与must have done的区别?