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单词拼写：
necessary
音标发音：
[ˈnesəsəri][ˈnesəseri]
词性词义：
adj.[数]必要的；必需的；必然的
速记技巧：
词源记忆法
拆：
ne-，无，没有，不能=no，-cess，走，离开
记：
ne-，无，没有，不能=no，-cess，走，离开——不能走的，不能离开的，引申词义必不可少的，必需的。
英英释义：
Noun:
1.anything indispensable; "food and shelter are necessities of life" "the essentials of the good life" "allow farmers to buy their requirements under favorable conditions" "a place where the requisites of water fuel and fodder can be obtained"
短语词组：
necessary actions必要措施
necessary apologies必要的道歉
necessary arrangements必要的安排
necessary end必然的结局
necessary equipment必要的装备
necessary information必要的信息
necessary instruments必要的仪器
necessary makeshift必要的权宜之计
necessary restriction必要的限制
necessary result必然的结果
necessary skill必需的技能
necessary sum所需的数目
absolutely necessary绝对必要
highly necessary非常必要的
really necessary真的必要
necessary for对…是必要的
necessary for health对健康是必要的
necessary to对…是必需的
记忆技巧：
ne- 不,非 + cess 行走,撤退 + -ary ...的
同义词辨析：
necessary compulsory【导航词义：必要的】
necessaryadj.必需的，必要的
〔辨析〕
普通用词，多指由客观因素决定的，是必不可少的。
〔例证〕
Water is necessary for life.
水是生命不可或缺的。
It is necessary to perform an operation on him.
必须对他实施手术。
It is not necessary to wear a business suit.
不一定要穿商务套装。
If necessary, we can always change the date of our trip.
必要的话，我们随时可以改变旅行的日期。
compulsoryadj.必须做的，规定的，义务的
〔辨析〕
指由法律、上级命令等规定或强制的。
〔例证〕
compulsory circulation/education/insuranc
强制流通/义务教育/强制保险
Questions 1-6 are compulsory.
1至6题为必答题。
Is military service compulsory in your country?
你们国家实行义务兵役制吗？
Swimming is compulsory at their school.
在他们学校，游泳是必修课。
Many young men in that country tried to get away from compulsory military conscription.
那个国家的很多年轻人试图逃避强制征兵的政策。
同反义词：
同义词
adj.
essential mandatory obligatory required unavoidable basic integral needful requisite material obligate
反义词
adj.
unnecessary
双语例句：
1.Even if you can't eat like a health nut all the time, at least you'll get most of your necessary vitamins with the help of a supplement.
即使你不能像一个很注重养生的人一样时时都吃维生素，至少也用通过补充获取大部分必要的维生素。
2.Consequently, a third test was necessary to see if these abilities could have been learned.
因此，有必要再进行一项实验，观察这些能力能否通过后天学习取得。
3.Even after he had completely abjured violence he was honest enough to see that in war it is usually necessary to take sides.
即使在他发誓彻底放弃暴力后，他也诚实地明白在战争中经常必须要选择一方。
4.Then you can fill in the gaps, clear up misinformation, and, if necessary and appropriate, explain what you know from your own experience.
然后，你就可以填补空白，把他们误解的厘清，而且，如果必要和合适，解释从你自己经验中你所获知的东西。
5.Necessary up to a point, but quite dull, and not something that deserves a place in management literature.
虽然在一定程度上是必需的，但是相当枯燥，也没有资格在管理学文献中占有一席之地。
6.Nobody wants to see that happen. Yet it may happen all the same, and Mr. Obama has to be willing to let it happen if necessary.
没有人愿意看到这种情况变成现实。但是，也许它终归会变成现实，而在必要的情况下，奥巴马必须心甘情愿地任由它变成现实。
7.His flight home delayed and able to obtain the necessary permits, he drove up to the affected coast.
他回家的航班被延误，并且获得许可进入灾区做调查。
8.until the Bidder shall have entered into contract with you and furnished the necessary performance bond.
直至投标者与贵方签订合同并提供必要的履约保证金为止。
9.This was quite a feat as the intense light from the star normally obscures the subtle visual details necessary to distinguish a planet.
这可以算得上是个相当壮举，因为恒星发出得强烈光芒掩盖了区分行星所需得视觉细节。
10.Within the body of a subquery, it is often necessary to refer to the value of a column in the active row of the main query.
在子查询的正文中，通常需要引用主查询的活动行中的列的值。
全部四级六级高考考研例句：
Russell argues that as robots take on more complicated tasks, it's necessary to translate our morals into AI language.
出自-2016年6月阅读原文
Now a third and far more significant motivation presents itself: meeting these goals may be necessary to prevent the collapse of our civilization.
出自-2016年6月阅读原文
When turning work into a game, it is necessary to understand what makes games interesting.
出自-2016年12月阅读原文
Then, he's going to need to know the technical details of your system and acquire the specific equipment necessary for jamming your specific setup.
出自-2016年12月阅读原文
Sugar, alcohol and tobacco, economist Adam Smith once wrote, are commodities which are nowhere necessaries of life, which have become objects of almost universal consumption, and which are, therefore, extremely popular subjects of taxation.
出自-2016年12月阅读原文
It is possible for burglars to make jamming attacks with the necessary equipment and skill.
出自-2016年12月阅读原文
It is necessary to use terms other than gamification for some professions.
出自-2016年12月阅读原文
Adults tend to talk about learning as if it were medicine: unpleasant, but necessary and good for you.
出自-2015年12月阅读原文
People tend to take in a lot more calories than necessary.
出自-2013年12月阅读原文
Although Kodak anticipated the inevitable rise of digital photography, its corporate（企业的） culture was too rooted in the successes of the past for it to make the clean break necessary to fully embrace the future.
出自-2013年6月阅读原文
While such vigilant（警觉的）tracking of cancer is a good thing in general, researchers are increasingly questioning whether all of this testing is necessary for the elderly.
出自-2012年12月阅读原文
And if we keep working toward that goal, someday, perhaps a list won't be necessary.
出自-2012年6月阅读原文
This is necessary because full-time students probably have to read several hundred pages every week.
出自-2014年6月听力原文
She does not think it's necessary to stay home every day with the children and she knows a very reliable babysitter who's willing to come to her house.
出自-2010年6月听力原文
Make donations when necessary
出自-2010年6月听力原文
But with that policy now being abolished, this holiday incentive is no longer necessary, the government says.
2019年6月四级真题（第一套）听力 section A
In addition, it is necessary to apply for graduation when you're near the time that you will be completing your graduation requirements.
2016年6月四级真题（第二套）听力 Section C
Is breakfast a necessary start to the day or a marketing tactic by cereal companies?
2019年12月四级真题（第三套）阅读 Section B
It is necessary for the companies and state agencies involved to consider the ethical consequences of these potential changes to build a better future for all.
2018年12月四级真题（第三套）阅读 Section C
It's not necessary to reply to a mass email sent to numerous recipients.
2018年12月四级真题（第二套）听力 Section C
Such a system could, if necessary, move troops quickly from one area to another.
2018年6月四级真题（第二套）听力 Section C
Their babies retain the ability to produce their own chlorophyll, though they can't generate energy from sunlight until they've eaten enough algae to steal the necessary genes, which they can't yet produce on their own.
2019年12月四级真题（第三套）阅读 Section C
To Fendley, a sense of drive and purpose, as well as an effective high-school education, and basic life skills, like balancing a checkbook, are the necessary ingredients for a successful life in America.
2017年12月四级真题（第三套）阅读 Section C
本文参考文献：
1 http://www.mcb5.cn/the
2 http://www.mcb5.cn/a
3 http://www.mcb5.cn/to
4 http://www.mcb5.cn/and
5 http://www.mcb5.cn/of
6 http://www.mcb5.cn/in
7 http://www.mcb5.cn/is
8 http://www.mcb5.cn/that
9 http://www.mcb5.cn/you
10 http://www.mcb5.cn/it
11 http://www.mcb5.cn/for
12 http://www.mcb5.cn/on
13 http://www.mcb5.cn/with
14 http://www.mcb5.cn/are
15 http://www.mcb5.cn/be
16 http://www.mcb5.cn/what
17 http://www.mcb5.cn/have
18 http://www.mcb5.cn/as
19 http://www.mcb5.cn/my
20 http://www.mcb5.cn/at
核心重点高频常考单词-necessary的发音/词性词义/用法/同近反义词/记忆法/词根词缀/高级替换词/中英文例句-秒词邦免费背单词赚钱微信小程序
单词拼写：
necessary
音标发音：
[ˈnesəsəri][ˈnesəseri]
词性词义：
adj.[数]必要的；必需的；必然的
速记技巧：
词源记忆法
拆：
ne-，无，没有，不能=no，-cess，走，离开
记：
ne-，无，没有，不能=no，-cess，走，离开——不能走的，不能离开的，引申词义必不可少的，必需的。
英英释义：
Noun:
1.anything indispensable; "food and shelter are necessities of life" "the essentials of the good life" "allow farmers to buy their requirements under favorable conditions" "a place where the requisites of water fuel and fodder can be obtained"
短语词组：
necessary actions必要措施
necessary apologies必要的道歉
necessary arrangements必要的安排
necessary end必然的结局
necessary equipment必要的装备
necessary information必要的信息
necessary instruments必要的仪器
necessary makeshift必要的权宜之计
necessary restriction必要的限制
necessary result必然的结果
necessary skill必需的技能
necessary sum所需的数目
absolutely necessary绝对必要
highly necessary非常必要的
really necessary真的必要
necessary for对…是必要的
necessary for health对健康是必要的
necessary to对…是必需的
记忆技巧：
ne- 不,非 + cess 行走,撤退 + -ary ...的
同义词辨析：
necessary compulsory【导航词义：必要的】
necessaryadj.必需的，必要的
〔辨析〕
普通用词，多指由客观因素决定的，是必不可少的。
〔例证〕
Water is necessary for life.
水是生命不可或缺的。
It is necessary to perform an operation on him.
必须对他实施手术。
It is not necessary to wear a business suit.
不一定要穿商务套装。
If necessary, we can always change the date of our trip.
必要的话，我们随时可以改变旅行的日期。
compulsoryadj.必须做的，规定的，义务的
〔辨析〕
指由法律、上级命令等规定或强制的。
〔例证〕
compulsory circulation/education/insuranc
强制流通/义务教育/强制保险
Questions 1-6 are compulsory.
1至6题为必答题。
Is military service compulsory in your country?
你们国家实行义务兵役制吗？
Swimming is compulsory at their school.
在他们学校，游泳是必修课。
Many young men in that country tried to get away from compulsory military conscription.
那个国家的很多年轻人试图逃避强制征兵的政策。
同反义词：
同义词
adj.
essential mandatory obligatory required unavoidable basic integral needful requisite material obligate
反义词
adj.
unnecessary
双语例句：
1.Even if you can't eat like a health nut all the time, at least you'll get most of your necessary vitamins with the help of a supplement.
即使你不能像一个很注重养生的人一样时时都吃维生素，至少也用通过补充获取大部分必要的维生素。
2.Consequently, a third test was necessary to see if these abilities could have been learned.
因此，有必要再进行一项实验，观察这些能力能否通过后天学习取得。
3.Even after he had completely abjured violence he was honest enough to see that in war it is usually necessary to take sides.
即使在他发誓彻底放弃暴力后，他也诚实地明白在战争中经常必须要选择一方。
4.Then you can fill in the gaps, clear up misinformation, and, if necessary and appropriate, explain what you know from your own experience.
然后，你就可以填补空白，把他们误解的厘清，而且，如果必要和合适，解释从你自己经验中你所获知的东西。
5.Necessary up to a point, but quite dull, and not something that deserves a place in management literature.
虽然在一定程度上是必需的，但是相当枯燥，也没有资格在管理学文献中占有一席之地。
6.Nobody wants to see that happen. Yet it may happen all the same, and Mr. Obama has to be willing to let it happen if necessary.
没有人愿意看到这种情况变成现实。但是，也许它终归会变成现实，而在必要的情况下，奥巴马必须心甘情愿地任由它变成现实。
7.His flight home delayed and able to obtain the necessary permits, he drove up to the affected coast.
他回家的航班被延误，并且获得许可进入灾区做调查。
8.until the Bidder shall have entered into contract with you and furnished the necessary performance bond.
直至投标者与贵方签订合同并提供必要的履约保证金为止。
9.This was quite a feat as the intense light from the star normally obscures the subtle visual details necessary to distinguish a planet.
这可以算得上是个相当壮举，因为恒星发出得强烈光芒掩盖了区分行星所需得视觉细节。
10.Within the body of a subquery, it is often necessary to refer to the value of a column in the active row of the main query.
在子查询的正文中，通常需要引用主查询的活动行中的列的值。
全部四级六级高考考研例句：
Russell argues that as robots take on more complicated tasks, it's necessary to translate our morals into AI language.
出自-2016年6月阅读原文
Now a third and far more significant motivation presents itself: meeting these goals may be necessary to prevent the collapse of our civilization.
出自-2016年6月阅读原文
When turning work into a game, it is necessary to understand what makes games interesting.
出自-2016年12月阅读原文
Then, he's going to need to know the technical details of your system and acquire the specific equipment necessary for jamming your specific setup.
出自-2016年12月阅读原文
Sugar, alcohol and tobacco, economist Adam Smith once wrote, are commodities which are nowhere necessaries of life, which have become objects of almost universal consumption, and which are, therefore, extremely popular subjects of taxation.
出自-2016年12月阅读原文
It is possible for burglars to make jamming attacks with the necessary equipment and skill.
出自-2016年12月阅读原文
It is necessary to use terms other than gamification for some professions.
出自-2016年12月阅读原文
Adults tend to talk about learning as if it were medicine: unpleasant, but necessary and good for you.
出自-2015年12月阅读原文
People tend to take in a lot more calories than necessary.
出自-2013年12月阅读原文
Although Kodak anticipated the inevitable rise of digital photography, its corporate（企业的） culture was too rooted in the successes of the past for it to make the clean break necessary to fully embrace the future.
出自-2013年6月阅读原文
While such vigilant（警觉的）tracking of cancer is a good thing in general, researchers are increasingly questioning whether all of this testing is necessary for the elderly.
出自-2012年12月阅读原文
And if we keep working toward that goal, someday, perhaps a list won't be necessary.
出自-2012年6月阅读原文
This is necessary because full-time students probably have to read several hundred pages every week.
出自-2014年6月听力原文
She does not think it's necessary to stay home every day with the children and she knows a very reliable babysitter who's willing to come to her house.
出自-2010年6月听力原文
Make donations when necessary
出自-2010年6月听力原文
But with that policy now being abolished, this holiday incentive is no longer necessary, the government says.
2019年6月四级真题（第一套）听力 section A
In addition, it is necessary to apply for graduation when you're near the time that you will be completing your graduation requirements.
2016年6月四级真题（第二套）听力 Section C
Is breakfast a necessary start to the day or a marketing tactic by cereal companies?
2019年12月四级真题（第三套）阅读 Section B
It is necessary for the companies and state agencies involved to consider the ethical consequences of these potential changes to build a better future for all.
2018年12月四级真题（第三套）阅读 Section C
It's not necessary to reply to a mass email sent to numerous recipients.
2018年12月四级真题（第二套）听力 Section C
Such a system could, if necessary, move troops quickly from one area to another.
2018年6月四级真题（第二套）听力 Section C
Their babies retain the ability to produce their own chlorophyll, though they can't generate energy from sunlight until they've eaten enough algae to steal the necessary genes, which they can't yet produce on their own.
2019年12月四级真题（第三套）阅读 Section C
To Fendley, a sense of drive and purpose, as well as an effective high-school education, and basic life skills, like balancing a checkbook, are the necessary ingredients for a successful life in America.
2017年12月四级真题（第三套）阅读 Section C
本文参考文献：
1 http://www.mcb5.cn/the
2 http://www.mcb5.cn/a
3 http://www.mcb5.cn/to
4 http://www.mcb5.cn/and
5 http://www.mcb5.cn/of
6 http://www.mcb5.cn/in
7 http://www.mcb5.cn/is
8 http://www.mcb5.cn/that
9 http://www.mcb5.cn/you
10 http://www.mcb5.cn/it
11 http://www.mcb5.cn/for
12 http://www.mcb5.cn/on
13 http://www.mcb5.cn/with
14 http://www.mcb5.cn/are
15 http://www.mcb5.cn/be
16 http://www.mcb5.cn/what
17 http://www.mcb5.cn/have
18 http://www.mcb5.cn/as
19 http://www.mcb5.cn/my
20 http://www.mcb5.cn/at
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