must作为猜测 mustn't还能作为其否定形式,只能用can't be表示不可能了吗

must作为猜测 mustn't还能作为其否定形式,只能用can't be表示不可能了吗 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? 添must或mustn't. can能力,may请求,must命令,should建议,can't猜测,mustn't禁止.请各造一个句子need 和shouldn't表示什么?也请各造一个句子 must否定形式是mustn't? must 和mustn't有区别吗? 英语题智力问答：两个英语老师讲的竟然不一样,作为学生的我也搞不懂了,can i come to school at 9;15am?no.you __.You ___arrive before 9am.{田must/.mustn't/can/can't///] must,need,mustn't,needn't的用法? must not 的缩写是mustn’t还是musn’t? must的反义疑问句 是mustn't还是don't must的否定式是musn't还是mustn't 几道英语竞赛题,1、They must have been here the day before yeasterday,_____?A.mustn‘t they B.didn they C.mustn't have they D.had thay为什麽选B?到底must的反义疑问句是怎样的?如果是对现在猜测呢?2、What would have happe can't 和 mustn't在表否定的猜测是用哪个? You mustn't look out of the window in class(改为祈使句）能不能用must 开头 must might could can't表猜测的用法 you must keep off the grass; you mustn't pick the flowers; you mustn't litter. You mustn't do this (will/must) you?mustn't 表示“不许”时 you mustn't smoke here,must you?翻译