must 和 have to 有什么不一样?mustn't 和 don't have有什么不一样?

must和 have to有什么区别? have to 和must 有什么区别?分别造句xiexie have to和must意义上有什么区别 have to和must有什么区别大神们帮帮忙 have to 和 must有什么区别吗? must 和must not ,have to 和not have to ,need和not need有什么区别 must 和 have to 有什么不一样?mustn't 和 don't have有什么不一样? 英文must和have to有什么区别?我知道must是主观,have to是客观. must be和must have be有什么区别谢谢 have to,must时态的差别．时态上有什么区别have to不能和什么时态一起? 英语里面这两个词的区别…have to 和 must 的区别有什么? must have done和have done有什么区别 must / have to有什么区别大神们帮帮忙 have to和must的用法有区别么? must be和must have been有什么区别he must have been sleeping.为什么这里要用must have been而不用must be 英语中,must have been 和 must have +过去分词,有什么区别如题 must和have to的区别我在知道是必须的意思,不过有什么区别啊! must to do和 must to be有什么区别,后面应该加什么?must在这里面做什么?