He must have been dreaming为什么加ingHe must have been dreaming中的 dream为什么加ingHe was not dreaming中的 dream为什么加ing

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? 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 He looks tired,he _______ too little sleep.A must have had B must have C must have been He must have been here yesterday,( 改为反义疑问句为什么 he must have been mistaken 帮助翻译一下 He can't find his key.He ---------- them.A.must lost B.must have been lost C.must have lost He must have been away 哪个是情态动词 是must还是have同上 he can't haue been a dcntist.he must have been a doctor.翻译下 He can't have been.He must have been.不是说单三用has吗?这里怎么用的have? translate please :He must have had an accident,or he would have been here then. he must have had an accident,or he should have been here then.求详解 must have been done must have done must have/ must have been的区别 he must have gone to Japan,_____he?he must have been to Japan,_____he?he must have gone to Japan last week,_____he?he must have been to Japan last week,_____he? he must have done it yesteraday,――?he must have done it for 2 years ――?he must have done it yesteraday,――?he must have done it for 2 years ――?he must have been here yesterday――?he must have been here for 2 years――?这几个反 he must have done it yesteraday,――?he must have done it for 2 years ――?he must have done it yesteraday,――?he must have done it for 2 years ――?he must have been here yesterday――?he must have been here for 2 years――?这几个反 he-----blind not to see that car cominga can hve been b will have been c may have been d must have been