陈述句含有
情态动词must有两种情况:
must表示“必须”,
反意疑问句部分为mustn’t…? / needn’t…?
He must study hard at English, mustn’t he? / needn’t he?
You must go home now, needn’t you? / mustn’t you?
We mustn’t be late, must we?
Must表示推测:“一定,肯定” 反意疑问句部分与must后面的动词呼应
You must be joking, aren’t you?
He must be ill, isn’t he ?
注意:用must对过去的动作推测时,反意疑问句部分的
助动词用did或have, 而对过去的状态推测,反意疑问句部分的
be动词用was:
She must have finished her work, hasn’t she? / didn’t she?
Jack must have arrived here yesterday, didn’t he?
He must have been a policeman, wasn’t he?
你说的“你必须做什么呢?”应该是“What do you must do?”
希望可以帮助到你!!
追问那这道题就问了
what do you ___ do every day ?
a.have b.have to c.must d.to
单选题,那你说是第二个对还是第三个对呢?