need

need
verb
[with obj.]

require (something) because it is essential or very important rather than just desirable
需要；须要
I need help now.
我现在需要帮助。
[with present participle]this shirt needs washing.
这件衬衫需要洗了。
[with infinitive]they need to win tomorrow.
明天他们须要获胜。
■(not need something)not want to be subjected to something
不需要
I don't need your sarcasm.
我不需要你的挖苦。
[as modal verb][with negative or in questions]expressing necessity or obligation
需要；须要；定要
need I say more?.
还要我说吗？。
all you need bring are sheets.
你所需要带来的东西是些被单。
[no obj.](archaic)be necessary
(古)需要
lest you, even more than needs, embitter our parting.
以免你为我们的分别过分伤心。

noun

[mass noun]circumstances in which something is necessary, or which require some course of action; necessity
需要；必要
the basic human need for food.
人类对食物的基本需要。
[with infinitive]there's no need to cry.
没必要哭泣。
(常作needs)a thing that is wanted or required
需要物，必需品
his day-to-day needs.
他的日常必需品。
[mass noun]the state of lacking basic necessities such as food or money
缺衣少食，贫困
a family whose need was particularly pressing.
一个尤为贫困的家庭。
■the state of requiring help or support
贫困（或困难）的处境
help us in our hour of need.
在我们困难的时候帮助我们。

常用词组
at need

(archaic)when needed; in an emergency
(古)困难之时；必要时
men whose experience could be called upon at need.
在必要时有经验的可用之人。

had need

(archaic)ought to
(古)须要，务必，应该
you had need hire men to chip it all over artistically.
你应该雇人手在上面都刻上有美感的图案。

have need of/to do something

if need be

in need

in need of

requiring or needing (something)
需要（某物）
he was in desperate need of medical care.
他迫切需要医疗护理。

语源

Old English nēodian (verb), nēod, nēd (noun), of Germanic origin: related to Dutch nood and German Not 'danger'

用法

1 In modern English, there are two quite distinct uses for the verb need. In the first place it is used as a normal verb meaning ‘requireI need some money: I need to see her todaySecond, it is one of a small class of verbs called modals (like can, could, and might, for example), which cannot stand alone without another verb and do not take normal verb endings or normal negative constructions, e.ghe need not worrynot he needs not worry: he can't swimnot he doesn't can swimBecause of this dual grammatical status, it is sometimes called a semi-modal.
2 The two constructions in that shirt needs washingverb + present participle) and that shirt needs to be washedverb + infinitive and past participle) have more or less the same meaning. Both these constructions are acceptable in standard English, but a third constructionthat shirt needs washedverb + bare past participle), is restricted to certain dialects of Scotland and North America and is not considered acceptable in standard English

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