2021-12-18

作者: yuRun | 来源:发表于2021-12-18 08:03 被阅读0次

may 请求,允许

肯定:can 可以/may

否定:can't 不能 /mustn't 禁止

【例句】

May I fish here?

——Sorry, you mustn't .Look at the sign“No fishing!”

跟规则相关用must

Must I finish my homework now?

——No, you needn't . You can have a rest.

must 提问,肯定must 答

否定needn't /don't have to* 答

【例句】

Must I hand in the poster to day?

——No, you needn't.

Must I finish the work today?

——No, you needn't .But you must finish it before next Monday.

【例句】

Must I finish the work now?

——No, you don't have to .You can do it in the evening.

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