请问must 有哪几种用法？

Question

如题所述

Answer 1

1:must I ...?
2:must to do ...
3:表示必须 must主观 have to客观
4：引出的问句，否定用needn't或don't have to
5：“must be + 表语”表示推测，它的否定或疑问式用can代替must。
6：“must + have + 过去分词”

Answer 2

1.aux.
I must go there tomorrow.
You must be Tom.

2.n.
Eating vegetables everyday is a must.
Going to school is a must.

3.That dress is a must have.

Answer 3

must1
助词 v.aux.
1.
(表示必要、命令或强制)必须,得
You mustn't talk like that.
你可不能这样说话。
You must do as you are told.
你必须遵嘱行事。
We must be home by six.
我们必须在六点以前回家。
2

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