Word · CEFR B1 · Frequency #1155
essential
必要的；非常重要的；必不可少的
核心释义
Extremely important and necessary.
- 1.
必需的
Necessary.
- 2.
非常重要的
Very important; of high importance.
- 3.
绝对必要的；极其重要的
absolutely necessary; vitally necessary
- 4.
生存必需但无法自体合成,需摄入的
Necessary for survival but not synthesized by the organism, thus needing to be ingested.
- 5.
基本的和根本的
basic and fundamental
- 6.
基本形式的,体现本质的
Being in the basic form; showing its essence.
- 7.
确实存在的
Really existing; existent.
- 8.
每个补区域不可约,补区域边界关于补区域不可压缩盘和单边形,且无叶面为球面或环面边界该环面在流形中为实心环
Such that each complementary region is irreducible, the boundary of each complementary region is incompressible by disks and monogons in the complementary region, and no leaf is a sphere or a torus bounding a solid torus in the manifold.
- 9.
特发性的
Idiopathic.
- 10.
本质的；非物质的
Having the nature of essence; not physical.
基本的；根本的；必需的（指营养素等）；本质的；体现本质的；精华的；特发的；原发性的；真实的；实际存在的
用法In use
Water is essential for human survival.
用法提示：essential 作表语形容词，表示“绝对必要的”，后接介词 for。
It is essential that you arrive on time for the interview.
用法提示：essential 用于 It is essential that... 句型，表示“极其重要的”，后接虚拟语气从句。
Good communication skills are essential in this job.
用法提示：essential 作表语形容词，表示“不可或缺的”，与介词 in 搭配。
essential tools and materials
funds essential to the completion of the project
the essential feature
it is essential (that) + clause
相关词与表达Connections
搭配Collocations
- essential for
- 对…绝对必要
- Water is essential for life.水对生命是绝对必要的。
- essential to
- 对…至关重要
- Good communication is essential to a healthy relationship.良好的沟通对健康的关系至关重要。
- essential part
- 重要组成部分
- Regular exercise is an essential part of a healthy lifestyle.定期锻炼是健康生活方式的重要组成部分。
- essential role
- 关键作用
- Education plays an essential role in personal development.教育在个人发展中起着关键作用。
- essential services
学习提示Learner notes
记忆技巧Memory Tip
联想 essence（本质），essential 即“本质的”，本质的东西当然是“绝对必要的”。
语境与语域Context & Register
register: neutral; typical contexts: general conversation, formal writing, instructional materials; note: 通常表示绝对必要，语气中性，适用于多数场合
发音与拼写Pronunciation & Spelling
All listed words share the ending /ʃəl/ but have different stressed vowels, so they do not rhyme with essential (/ɪˈsɛn.ʃəl/).
高价值词汇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。
用法优先级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。
一起学习词形
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.