首先我们来看下needn't和mustn't的大致意思:
needn't:词性为缩写形式,needn't是由need和not两个词组合而成的缩写形式。
mustn't:词性为缩写形式,mustn't是由must和not两个词组合而成的缩写形式。
通过下面的表格我们了解下needn't和mustn't的含义、发音和用法
接下来让我们看下needn't和mustn't的用法区别:
1.含义:needn't表示不需要做某事,而mustn't表示禁止做某事。
例子:
- You needn't worry.
(你needn't担心。)
- You mustn't smoke.
(你mustn't吸烟。)
2.用法:needn't表示对某件事情没有必要,而mustn't表示对某件事情是禁止的。
例子:
- You can leave your umbrella behind, the weather is good, you needn't worry.
(你可以不带雨伞,因为天气很好,你needn't担心。)
- You can't smoke here, it's not allowed, you mustn't smoke.
(你不可以在这里吸烟,这是禁止的,你mustn't吸烟。)
3.语义:needn't表示对做某事的需要没有强调,而mustn't表示对做某事的禁止有强调。
例子:
- You don't have to attend the meeting, there is no need, you needn't go.
(你可以不去开会,没有必要,你needn't去。)
- You cannot be late, it's not allowed, you mustn't be late.
(你不可以迟到,这是禁止的,你mustn't迟到。)
4.语气:needn't表示建议或提醒,语气较轻;而mustn't表示强烈的命令或规定,语气较严厉。
例子:
- You can skip the shopping, I can buy for you, you needn't go.
(你可以不去购物,因为我可以帮你买,你needn't去。)
- You cannot touch that button, it's not allowed, you mustn't touch.
(你不可以触碰那个按钮,这是禁止的,你mustn't触碰。)