Word · Frequency #555
necessary
必需品；必要的东西
anything indispensable
作名词时常用复数 necessaries
- 1.
anything indispensable
任何必需的东西
任何必需的东西
In use
Before the trip, we packed only the necessaries: a map, water, and a change of clothes.
The shop sells all the necessaries for camping, from tents to cooking pots.
She earned just enough to buy the necessaries of daily life.
the necessaries of (something)
常用复数形式 necessaries 表示多种必需品。
Water is one of the necessaries of life.
水是生活必需品之一。
a necessary for (something)
A map is a necessary for hiking.
地图是徒步旅行的必需品。
Common mistakes
It is neccessary to study hard.It is necessary to study hard.
拼写错误：necessary的正确拼写是n-e-c-e-s-s-a-r-y，不要写成neccessary（多了一个c）或necessery。注意只有一个c和两个s。
This tool is necessary for to fix the car.This tool is necessary for fixing the car.
介词搭配错误：necessary for后面应接名词或动名词，而不是不定式。正确用法是'necessary for doing something'或'necessary to do something'（但to do前不加for）。
Connections
Collocations
- daily necessaries
- 日常必需品
- I packed my daily necessaries for the trip.我为旅行打包了日常必需品。
- basic necessaries
- 基本必需品
- The store sells basic necessaries like food and water.这家商店出售食品和水等基本必需品。
- household necessaries
- 家庭必需品
- We need to buy household necessaries such as soap and detergent.我们需要购买肥皂和洗涤剂等家庭必需品。
- travel necessaries
- 旅行必需品
- Don't forget your travel necessaries when you go abroad.出国时别忘了带旅行必需品。
Idioms & figurative uses
- a necessary evil
- 不可避免的坏事；无奈的必需之物Paying taxes is a necessary evil.纳税是一种不可避免的坏事。
Learner notes
Memory Tip
记忆法：necessary 里有一个 c 和两个 s，像衬衫一个领子两个袖子。
Context & Register
语域：neutral 常见场景：formal writing、legal documents 作为名词时多用于正式或法律语境，常以复数形式'necessaries'出现，表示必需品。
Grammar Note
作为名词，常用复数形式，表示必需品
Pronunciation & Spelling
These words all end with the spelling '-ary'. In the pronunciation of 'necessary' (given as /nɛsəsɛri/), the ending is /-ɛri/. The listed words share a similar ending sound /-ɛri/, though their stressed vowels differ, so they are not perfect rhymes but are useful for comparing the '-ary' suffix.
High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Usage priority
Collins 词频等级为 4，建议结合例句记忆，而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WORDNET.