must和have to的区别

have to 是客观的情况，不以人的意愿为前提，人是无法改变这个状态的。如My mother was ill yesterday, I have to take care of her. or ,It is raining heavily,we have to stay in the classroom. 而 must 则是主观情况,可做可不做的，没有义务一定要做。如My room is dirty, my mother says that I must clean my room.如果我不嫌弃 ，我也可以不用打扫，含有主观意志。

have to 一般多用于指自己的事情 比如说 I have to feet my cat.当然也可以用在与他人对话上 must 其实也一样 只不过must语气较重 听起来- - （个人见解）

must表示主观，have to表示客观。

have to 是提议你做一件事情
You have to read this book for one more point. 你可以都这本书加分。
must 是强制性的
You must do a homework. 你（一定）要做作业。

1.意义区别
2.时态区别
3.问答区别
4.情态动词推测区别