have to与must的用法有何不同

have to与must的用法有何不同 have to与must在英语中用法有什么不同 英语has与have用法有何不同? 情态动词have to与must的用法区别 have to和must的用法有区别么? had were has have的用法有何不同? have to,must ,gotta的区别?用法! must 作为情态动词的用法问题?试比较以下的句子有何不同:句一:He must have been in his office last night.句二:You must hand in the report immediately. have to 与 there be 的区别have to 与 there be 在用法上有哪些不同 关于have to/must be与don't have to/can't behave to与must bedon't have to与can't be的意思一样,在使用过程中有何区别 情态动词用法can/have to/must的用法 take pains to do sth 与spare no pains to do sth有什么不同,不要只是解释,他们的用法有何不同? 谁知道have和own用法有何不同?分数20! must 和 have to 的区别是什么用法的区别 have to 和 must的区别及用法上 have to 和must 的用法和区别? must;have to的用法,会多少教多少, should,must,have to,need,can的用法区别should,must,have to,need,can的用法区别是什么啊?