necessary
释义
adj. 必需的；必要的；必然的
自然拼读
词态
复数：necessaries
例句
The doctor says it may be necessary for me to have an operation.
医生说我可能需要做手术。
The booklet provides all the necessary information about the college.
这本小册子提供了关于那所学院的所有必需信息。
The closure of the factory was a necessary consequence of increased competition from abroad.
工厂倒闭是来自国外的竞争加剧的必然结果。
No further changes were considered necessary.
没有必要作出进一步的改变。
词组
sufficient and necessary condition
充要条件；充分必要条件
absolutely necessary
绝对必要
necessary connection
必然联系
as necessary
必要时
necessary for
所必需；对…是必要的
if necessary
如果必要的话
necessary evil
n. 无可避免之灾祸
necessary and sufficient condition
充要条件；必要且充分的条件
when necessary
在必要的时候
necessary condition
必要条件，充分必要条件
where necessary
必要时；需要时；必要地方
近义
adj.[数]必要的；必需的；必然的
inevitable
required
essential
certain
automatic
n.必需品
requirement
want
词根词缀点击查看necessary词根词缀
真题
考纲分布
adj/n. 必需的; 必要的
考纲释义
adj/n. 必需的; 必要的
真题例句
I probably won't make the necessary changes to create a new job which will bring pleasure to my life.
我可能不会做出必要的改变来创造一份能给我的生活带来快乐的新工作。
[2020 山西省卷 词汇运用]
It's necessary for us to wear masks (口罩) in public places during the COVID-19 period.
在新冠肺炎期间, 我们有必要在公共场所戴口罩。
[2020 云南省卷 单项选择]
It is clear that Confucius' thought will continue to be a necessary part of Chinese culture.
显然，孔子的思想将继续成为中国文化不可或缺的一部分。
[2020 成都市B卷 图表理解]
备考派生词
necessarily
adv. 必定；必然地
考纲分布
adj/n. 必需的; 必要的
考纲释义
adj/n. 必需的; 必要的
真题例句
I'd like to live a creative life and make changes when necessary as she did.
我想过有创造力的生活，必要时像她一样做出改变。
[2021 天津卷 阅读表达]
Unfortunately, you must carry the necessary equipment with you, since it's all but impossible to find natural substitutes.
不幸的是，你必须随身携带必要的设备，因为几乎不可能找到天然的替代品。
[2017 全国卷1 阅读理解]
Persons in other cultural groups value silence and view it as necessary for understanding a person's needs.
其他文化群体的人重视沉默，认为沉默是理解一个人需求的必要条件。
[2016 全国卷1 阅读理解]
备考派生词
necessarily
adv. 必定；必然地
necessity
n. 必要；必需品；必然性；需要；不可或缺；强制性；强迫性；必然情况
1 ...it’s necessary to translate our morals into AI language...
2016.6 CET4 阅读理解
2 ...its corporate culture was too rooted in the successes of the past for it to make the clean break necessary to fully embrace the future...
2013.6 CET4 阅读理解
3 ...She does not think it's necessary to stay home every day with the children and she knows a very reliable baby-sitter who's willing to come to her house...
2014.6 CET4 听力题
4 ...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...
2010.6 CET4 听力题
5 ...That’s 300 dollars including the necessary computer time...
2009.12 CET4 听力题
6 ...its corporate culture was too rooted in the successes of the past for it to make the clean break necessary to fullyembrace the future...
2015.6 CET4 阅读理解
7 ...but necessary and good for you...
2015.12 CET4 阅读理解
8 ...researchers are increasingly questioning whether all of this testing is necessary for the elderly...
2012.12 CET4 阅读理解
9 ...listening is also a necessary quality of a successful person...
2015.12 CET4 写作题
10 ...This is necessary because full-time students probably have to read several hundred pages every week...
2014.6 CET4 听力题