Word · Frequency #2
is
/biː/
verb
助动词
is is the third person singular of be (irregular).
核心释义
As an auxiliary verb:
- 1.
作为助动词
As an auxiliary verb:
- 2.
作为系动词
As a copulative verb:
- 3.
作为不及物词汇动词
As an intransitive lexical verb:
系动词；不及物动词；作为助动词；作为系动词；作为不及物词汇动词
用法In use
She is a teacher.
用法提示：此句中'is'是系动词，表示身份。
They were happy yesterday.
用法提示：此句中'were'是系动词，表示状态。
I am ready for the exam.
用法提示：此句中'am'是系动词，表示状态。
be + adjective
系表结构，表示状态或特征。
She is happy.
她很高兴。
be + noun phrase
表示身份或类别。
He is a doctor.
他是一名医生。
be + prepositional phrase
表示位置或地点。
相关词与表达Connections
搭配Collocations
- be about to
- 即将
- I was about to leave when the phone rang.我正要离开时电话响了。
- be afraid of
- 害怕
- She is afraid of spiders.她害怕蜘蛛。
- be aware of
- 意识到
- He was not aware of the danger.他没有意识到危险。
- be interested in
- 对…感兴趣
- Are you interested in music?你对音乐感兴趣吗？
- be responsible for
- 对…负责
- Who is responsible for this project?
学习提示Learner notes
记忆技巧Memory Tip
想象蜜蜂（bee）说'我是（be）蜜蜂'，记住be表示'是'和'存在'。
语境与语域Context & Register
释义：是，成为；存在。语境：任何场合（正式/非正式）。语域：中性。注释：be动词是最基础的系动词，适用于所有语境。
语法说明Grammar Note
系动词，连接主语和表语
发音与拼写Pronunciation & Spelling
All these words rhyme with 'be' /biː/: they share the same long vowel /iː/ sound. Watch out for words spelled similarly but pronounced differently, like 'bed' (/bed/) or 'bet' (/bet/).
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
Dictionary facts from ECDICT, WIKTIONARY.