necessary

英 [ˈnesəsəri]

美 [ˈnesəseri]

adj.  必需的; 必要的; 必然的; 无法避免的
n.  必需品

复数：necessaries　

中考高考CET4考研

Oxford 3000 / Collins.4 / BNC.555 / COCA.982

同义词辨析

necessarycompulsory【导航词义：必要的】

习惯用语

adj.

a necessary evil
• 无法避免的坏事；不得已的事
  a thing that is bad or that you do not like but which you must accept for a particular reason

牛津词典

adj.

• 必需的；必要的
  that is needed for a purpose or a reason
  1. It may be necessary to buy a new one.
     也许有必要买个新的了。
  2. It doesn't seem necessary for us to meet.
     我们似乎没必要见面。
  3. Only use your car when absolutely necessary.
     非用不可的时候再用你的汽车。
  4. If necessary , you can contact me at home.
     必要的话，我在家时你也可以和我联系。
  5. I'll make the necessary arrangements.
     我会做一些必要的安排。
• 必然的；无法避免的
  that must exist or happen and cannot be avoided
  1. This is a necessary consequence of progress.
     这是发展的必然后果。

柯林斯词典

• ADJ-GRADED 必要的;必需的
  Something that isnecessaryis needed in order for something else to happen.
  1. I kept the engine running because it might be necessary to leave fast...
     我没让发动机熄火，因为也许需要迅速离开。
  2. 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。
  3. Is that really necessary?...
     那真有必要吗？
  4. Make the necessary arrangements.
     做一下必要的安排。
• ADJ (结果或联系)必然的，势必的
  Anecessaryconsequence or connection must happen or exist, because of the nature of the things or events involved.
  1. Wastage was no doubt a necessary consequence of war...
     巨大的损耗无疑是战争的必然结果。
  2. 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。
• N-PLURAL 基本生活必需;必需品
  Necessariesare things, such as food or clothing, that you need to have in order to live.
  1. ...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
• PHRASE 如果必要的话
  If you say that something will happenif necessary,when necessary, orwhere necessary, you mean that it will happen if it is necessary, when it is necessary, or where it is necessary.
  1. 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。
  2. 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。
  3. 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。

Be careful with the spelling of this word.
注意该词的拼写。

英英释义

noun

• anything indispensable
  1. food and shelter are necessities of life
  2. the essentials of the good life
  3. allow farmers to buy their requirements under favorable conditions
  4. a place where the requisites of water fuel and fodder can be obtained
  Synonym:necessityessentialrequirementrequisite

adj

• unavoidably determined by prior circumstances
  1. the necessary consequences of one's actions
• absolutely essential

双语例句

• And let me assure you I will use whatever force is necessary to restore order.
  我向你保证，我将动用一切必要力量来恢复秩序。
• Political knowledge is a necessary complement to science in approaching solutions to these problems.
  在寻找解决这些问题的方法时，需要有政治知识作为对科学知识的补充。
• 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。
• The ministry said it reserved the right to take whatever action necessary.
  该部表示保留采取任何必要行动的权利。
• To improve the quality of life through work, two complementary strategies are necessary
  想通过工作提高生活质量，需要两个相辅相成的策略。
• Discipline is a necessary, but certainly not a sufficient condition for learning to take place.
  纪律是有必要的，但绝对不是保证学习成效的充分条件。
• If necessary X-rays and blood tests will also be used to aid diagnosis
  如有必要，还要进行X光检查和验血以帮助诊断。
• These reference books are necessary to us.
  这些参考书是我们所必需的。
• The government has reaffirmed that it will take any steps necessary to maintain law and order.
  政府重申将采取一切必要措施维护法律和秩序。
• 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。