mustn't能用反意疑问句的前半段句子吗如果能用后半句是用must +前面的主语吗?

mustn't能用反意疑问句的前半段句子吗如果能用后半句是用must +前面的主语吗? 前面是must的句子,.改成反意疑问句是加mustn't he 还是needn't he He must be busy today,____ ____(改为反意疑问句)isn't he?　　为什么呢?并说下什么时候能用 mustn't be?mustn't he? must need needn't mustn't的反意疑问句就这四个, you mustn't play on the road,--- 反意疑问句 一道关于反意疑问句的问题.He mustn't smoke,________?后面应该加啥子?解释一下哈.不胜感激. must do反意疑问句后面是mustn't还是don't You mustn't play football in the fields,____ ____?（改为反意疑问句） You mustn't speak to your mother,___?反意疑问句怎么回答啊 一道反意疑问句You must work hard,_____ you?为什么不是mustn't He must do his homework,______he?反意疑问句(A) needn't(B) mustn't并说明理由. must反意疑问句的用法you must start now,____?A.mustn't you B.dont;you 选A还是选B? 关于一个英文句子的反意疑问句There must be something wrong with the watch,_____?A needn't thereB isn't itC mustn't thereD isn't he参考答案选D,我想是不是答案错了,这里有must作为情态动词了,为什么还用be动词呢? I don't think they can work it out,这个句子的反意疑问句是什么? you must see the doctor,（ A needn‘t you B mustn’t you C don‘t you D aren’t you反意疑问句 He must be feel terrible,_____(反意疑问句）A.isn't he B.doesn't he C.mustn't he D.can't he 肯定祈使句的反意疑问句只能用will吗 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