where were you this afternoon?I tried to called you.I () to the library for while为什么要填had to go 不能填must must和have to的区别在那?

问题描述:

where were you this afternoon?I tried to called you.I () to the library for while
为什么要填had to go 不能填must must和have to的区别在那?

你今天下午在哪里?我试着给你打电话。我图书馆时间

个人想法仅供参考。
must 指的是一定要去,没有什么前提条件。他只是说去就必须去。
have to 指的是不得不去,他有一定原因不得不去,。或许也想不去,但是碍于什么原因才要去的。

must是主观上的 have to是客观上的