sb need not do sth

sb need not do sth
1. sb need not do sth or sb needn't do sth
(advising, suggesting) 某人不必做某事, 某人没有必要做某事(用于宽慰对方)
- Look, you needn't shout. 嗨, 你不必大喊大叫。
2. sb need not do sth or sb needn't do sth
(giving reassurance) 某人不必做某事；某人没有必要做某事
- It needn't be like that. 不必弄成那样。
- You needn't worry. 你不必担心。
3. sb need not do sth or sb needn't do sth
(giving permission) 某人可以不做某事
- Need I stay?—No, you needn't. 需要我留下来吗？——不, 不用。
4. sb needn't have done sth
(when something was unnecessary) 某人本来不必做某事；某人本来不需要做某事
- I needn't have worried. 我本来不必担心的。
5. sb hardly need do sth or sb needn't do sth
(stating what is obvious) 某人无需说…, 某人不必说…(强调对方已知道)
- I need hardly say that by this time I was extremely worried. 不用说, 我当时心急如焚。
See: need

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