英语的系表结构he must be at home是系表结构吗,it must be terrible to be grown up这句话里也都是系表结构吗.

英语的系表结构he must be at home是系表结构吗,it must be terrible to be grown up这句话里也都是系表结构吗. He must be at home 的一般疑问句 may be 和 must be的区别是什么,老师说must be也是可能啊!比如he must be at home He must be at home.为什么用be? 一英语BE的用法问题1.Hurry up!he must be waiting for us at the station.这里为什么是must be waiting 去掉be must waiting wait 也是动词啊?这些情态动词 什么时候后面根be 什么时候2.you will be sleepy.改成一般疑问 He must be at home.改为否定推测 he must be at home 如何构成反意疑问句 The l------is on ,He must be at home. I think he must be at home now变反意疑问句I think he must be at home now,__? he must be at home 改为否定推测 he ___ ___ at home 急 He has had a toothache.He must be at the__(dentist)at the moment 反意疑问句英语题1.He must be at home now,A.must be B.mustn't be C.is he D.isn't he2.he must have been together with his family last week,A.didn' he B.wasn't he C.hasn't he D.isn't he说下原因 一道英语改句子的题目!The man must be sent to hospital at once.（改为反意疑问句）The man must be sent to hospital at once,_______ ________?我的答案是“needn't he”,但是答案上写的是“mustn't he”,请哪位大侠来 he must ( )here.《be》 He must be happy! He must be playing computer games at home,isn't he,为何用isn't he? 我写的英语句子,请帮我看下对错he may has lunch at your home.he may be ill,so he can't go there.He may have been in the Egypt.I' m not sure if he ill.He can't have been jumping at that moment.I think that you must have been the fastet of Look:Jack is putting on his hat and coat.He must (be going) out.请问这里的be going能否改成go呢?有什么区别呢?结构must+be+doing/coming/joking等must+do/go/know/have等