英语翻译机器一定正在被修理.It must be repairing now.这样不对吧,must be doing表示

must be表示一定是,后接动词原形,但为什么会是It must belong toTom.为什么不加be呢, it must be It Must Be?歌词 This Must be it must be stopped from doing i must be leaving now It ___ be quite late now.We must be going home.A.can B.must 英语翻译it might be fun 和it must be 英语翻译You must be----- ------ ----- ----- ----- must be do与must be doing 区别 用must be done 和must be doing 造句 是must be to do还是must be doing