He must have been very nervous when speaking.Did you __________that his hand was shaking?mind notice attention concentrate

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? I've must have been blind.是否病句?I've must have been blind.两个have?该句出自Tonya Mitchell的Stay. 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 I've must have been blind not to see you look away from meI've must have been blind 这句话有毛病么？ 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? linda is very sad1.Linda is very sad___what you've said to herA.because of B.thanks to C.because D.since 2.有classic这个词吗?反义疑问句3.he must have been to beijing _______?