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BNC: 555 COCA: 982
necessary
nesɪsəri ˈnɛsəˌsɛri
Word forms: plural necessaries
1 ADJ-GRADED 必要的;必需的 Something that is necessary is needed in order for something else to happen. 必要的;必需的

  • I kept the engine running because it might be necessary to leave fast. [+ to-infinitive]

    我没让发动机熄火，因为也许需要迅速离开。

  • We will do whatever is necessary to stop them.

    我们要采取一切必要措施去阻止他们。

  • Is that really necessary?.

    那真有必要吗？

  • Make the necessary arrangements.

    做一下必要的安排。

2 ADJ [ADJ n] (结果或联系)必然的，势必的 A necessary consequence or connection must happen or exist, because of the nature of the things or events involved. (结果或联系)必然的，势必的

  • Wastage was no doubt a necessary consequence of war.

    巨大的损耗无疑是战争的必然结果。

  • Scientific work is differentiated from art by its necessary connection with the idea of progress.

    科学工作与艺术的区别在于它与人类进步有着必然联系。

SYN inevitable, sure, certain, unavoidable
3 N-PLURAL 基本生活必需;必需品 Necessaries are things, such as food or clothing, that you need to have in order to live. 基本生活必需;必需品 [old-fashioned]

  • ...a small parcel of necessaries tied up in a handkerchief and carried on a stick.

    用手绢包好挑在棍子上的一小包生活必需品

4 PHRASE 如果必要的话 If you say that something will happen if necessary ,when necessary, or where necessary, you mean that it will happen if it is necessary, when it is necessary, or where it is necessary. 如果必要的话

  • If necessary, the airship can stay up there for days to keep out of danger.

    必要时，飞艇能在那里停留数天以躲避危险。

  • The army needs men who are willing to fight, when necessary.

    军队需要在必要时愿意投入战斗的军人。

  • All the rigging had been examined, and renewed where necessary.

    所有索具都进行了检查，并把该更换的部件全部更换一新。

Usage Note :

  • Be careful with the spelling of this word.

    注意该词的拼写。

Thesaurus
Thesaurusnecessary Also look up:
ADJ.

essential, mandatory, obligatory, required; (ant.) unnecessary 1

unavoidable 2

Trends of necessary
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BNC: 555 COCA: 982
necessary

adjective

VERBS | ADVERB | PREPOSITION | PHRASES VERBS➤appear, be, prove, seem顯得必要；必要；證明必要；看似必要▸➤become變得必要▸➤remain仍然必要▸➤make sth使⋯成為必要◇The cold weather has made it necessary to protect the crops.天氣寒冷，莊稼必須加以保護。➤believe sth, consider sth, deem sth, feel sth, find sth, regard sth as, see sth as, think sth相信⋯必要；認為⋯必要；視⋯為必要；感覺⋯必要；發現⋯很必要◇Make any alterations you consider necessary.你認為有必要的都可以修改。◇You may find it necessary to readjust the wheels from time to time.你可能會發現不時調整輪子很有必要。ADVERB➤really, strictly確實／完全必要◇I was determined not to stay in the hospital for any longer than was strictly necessary.我決定，除非極為必要，否則決不在醫院多待一天。➤absolutely絕對必要➤hardly幾乎無需▸➤logically邏輯上必要▸➤medically醫學上必要PREPOSITION➤for對⋯必要◇qualifications which are necessary for work with the under-fives照顧 5 歲以下兒童必需的資格PHRASES➤if necessary如果必要的話◇These measures will be enforced, if necessary, by the army.如果必要，軍隊會強制執行這些措施。➤as necessary, when necessary, where necessary需要時；必要處◇We are here to give help and support when necessary.如有需要，我們隨時提供幫助和支援。◇Editorial changes have been made where necessary.在必要之處作了編輯上的改動。
BNC: 555 COCA: 982
necessary adj.
⇨ necessary (necessary to do sth) ⇨ inevitable (a necessary condition/consequence) necessary

adjective

  ➡ See also the entry for essential 另见essential条necessary ♦︎ compulsory ♦︎ mandatory ♦︎ requisite ♦︎ obligatory ♦︎ forced ♦︎ involuntaryThese words all describe sth that sb has to do or have. 这些词均表示必须做的、必要的、强制性的。PATTERNS AND COLLOCATIONS 句型和搭配◆it's necessary / compulsory / mandatory / obligatory for sb to do sth◆it's necessary / compulsory / mandatory / obligatory to do sth◆forced / involuntary repatriation◆almost / legally compulsory / obligatory■ necessary that is needed for a purpose or a reason 必需的；必要的◆It may be necessary to buy a new one.也许有必要买个新的了。◆Only use your car when absolutely necessary.不得已时才开车。◆If necessary, you can contact me at home.必要的话，我在家时你也可以和我联系。◆I'll make the necessary arrangements.我会做一些必要的安排。OPP unnecessary ⇨ unnecessary   see also necessary ⇨ inevitable , necessitate ⇨ mean verb 3 ■ compulsory kəmˈpʌlsəri (rather formal) that must be done because of a law or rule （按法律或规定）必须做的，强制的◆It is compulsory for all motorcyclists to wear helmets.所有骑摩托车的人都必须强制戴头盔。◆English is a compulsory subject at this level.英语在这一级别是必修科目。OPP voluntary , optional ⇨ voluntary 1   see also compulsion ⇨ pressure 2 ■ mandatory ˈmændətəri; NAmE ˈmændətɔːri, BrE also mænˈdeɪtəri (formal) that must be done because of a law （按法律）必须做的，强制的◆It is mandatory for blood banks to test all donated blood for the virus.血库一律要按规定检查所有捐献的血液是否含有这种病毒。◆The offence carries a mandatory life sentence.这种罪行依照法律要判无期徒刑。■ requisite ˈrekwɪzɪt [only before noun] (formal) necessary for a particular purpose 必需的；必备的；必不可少的◆She lacks the requisite experience for the job.她缺少做这份工作所必需的经验。■ obligatory əˈblɪgətri; NAmE əˈblɪgətɔːri (formal) that must be done because of a law or rule （按法律或规定）必须做的，强制的◆It is obligatory for all employees to wear protective clothing.所有员工必须强制穿防护服。ⓘ Obligatory is sometimes used humorously before a noun to talk about sth that often exists or is done, but that is not really necessary at all. * obligatory有时用于名词前，描述常有的或常做的但根本无甚必要的事，为幽默用法◆The hotel has a terrace with comfy chairs for that obligatory cocktail.这家旅馆有个露台，摆放着舒适的椅子，供人们喝上一杯那似乎是不可或缺的鸡尾酒。 OPP optional ⇨ voluntary 1 NOTE 辨析 Compulsory, mandatory or obligatory? Compulsory is used especially in the contexts of education, business and employment. * compulsory尤用于教育、商务和职业语境◆compulsory education / schooling / reading / subjects义务教育；必读材料；必修科目◆compulsory insurance / liquidation / purchase / redundancy / retirement强制性保险；强制清算／购买／裁员／退休 Mandatory is used especially in the context of the law. * mandatory尤用于法律语境◆a mandatory sentence / penalty / duty / requirement法定判决；依法惩处；法定义务／条件 Obligatory is often used to talk about rules and laws relating to safety, for example in sport or the workplace. * obligatory常用于描述跟安全相关的规定和法律，如体育运动的规则或工作场所的规章◆Recently safety regulations have made it obligatory for all competitors to wear fist protectors.最近，所有参赛者都必须按安全规定戴拳套。 ■ forced [usually before noun] happening or done without you wanting it to 被迫的；不得已的；非自愿的◆Many are unhappy about the forced repatriation of the refugees.很多人对强制遣返难民感到不满。◆I hope there will be no need for the forced sale of any property.我希望不会有强行变卖财产的必要。■ involuntary ɪnˈvɒləntri; NAmE ɪnˈvɑːlənteri [usually before noun] (rather formal, written) happening or done without you wanting it to 被迫的；不得已的；非自愿的◆The distinction between voluntary and involuntary unemployment is often blurred.自愿失业和非自愿失业之间的区分往往很模糊。OPP voluntary ⇨ voluntary 1 NOTE 辨析 Forced or involuntary? Forced often suggests that sb is forcing sb to do sth; involuntary suggests that it is circumstances, not another person, that forces sb to do or be sth. * forced常指受他人所迫，involuntary指受环境所迫或所限◆forced unemployment However, involuntary can also be used when it is in fact the actions or decision of another person that forces sb to do sth, as a more formal and less direct (or less honest) way of saying forced. 不过，involuntary可用于指事实上是另一个人的行为或决定迫使某人做某事，是forced较为正式和不太直接（或不太坦率）的说法◆the forced / involuntary repatriation of the refugees对难民的强制性遣返
BNC: 555 COCA: 982
necessary
Necessary: necessary, essential, vital...
Certain or likely to happen: certain, likely, probable...
Important thing or detail: feature, priority, element...

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