动词
1. must的解释
1. You must do as you are told. 你必须遵嘱行事。
2.
2. You mustn't talk like that. 你可不能这样说话。
3. You must be tired after your long journey. 你走了这么远的路,一定很累。
4. must的解释
4. You must not do it. 你不可以做那件事。