Word · Frequency #470
half
一半
核心释义
one of two equal parts of something; a half
用法In use
Half of the apples were rotten.
用法提示：half 作代词，表示“一半”。
Only half of the students passed the exam.
用法提示：half 作代词，表示“一半”。
I ate half of the cake.
用法提示：half 作代词，表示“一半”。
half of + noun
名词前通常加定冠词或限定词。
Half of the cake is gone.
蛋糕的一半已经没了。
half of + pronoun (us/them/you)
代词用宾格形式。
Half of them voted yes.
他们中有一半投了赞成票。
half + the + noun
非正式用法，相当于 half of the。
Half the students are absent.
一半的学生缺席。
常见错误Common mistakes
易错句子Half of students are from China.正确表达Half of the students are from China.
汉语中没有冠词，因此学习者容易遗漏定冠词'the'。在英语中，'half of'后面通常需要加限定词（如the, my, these等）或代词，不能说'Half of students'。
易错句子Half of them is coming to the party.正确表达Half of them are coming to the party.
当'half of'后面跟复数代词'them'时，谓语动词应该用复数形式'are'，而不是单数'is'。动词的数要与'of'后面的名词或代词一致。
相关词与表达Connections
搭配Collocations
- half of
- ……的一半
- Half of the students were absent today.今天一半的学生缺席了。
- more than half
- 超过一半
- More than half of the budget goes to salaries.超过一半的预算用于支付工资。
- less than half
- 不到一半
- Less than half of the applicants were accepted.不到一半的申请者被录取了。
- half and half
- 各占一半
- The class was half and half boys and girls.这个班男生女生各占一半。
- the other half
- 另一半
学习提示Learner notes
记忆技巧Memory Tip
把苹果切成两半，任取一份就是 half，谐音“哈夫”；复数是 halves，f 变 v。
语境与语域Context & Register
语域：neutral 常见场景：日常对话、书面表达 “half”作代词表示“一半”，属于中性常用词，日常口语和书面语中都很常见；没有明显的正式或非正式色彩，比较通用。
发音与拼写Pronunciation & Spelling
All listed words end with the sound /ɑːf/ and rhyme with half in British English. The l in half and calf is silent. Beware lookalikes like halve /hɑːv/ (ends with /v/), halo /ˈheɪləʊ/, and halt /hɒlt/, which do not rhyme.
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 5，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.