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either of two equal parts into which something is or can be divided 一半;半 two and a half kilos (= 2½) 两公斤半 One and a half hours are allowed for the exam. 考试时间为一个半小时。 An hour and a half is allowed for the exam. 考试时间为一个半小时。 - half of something
in the first half of the 20th century 在20世纪上半叶 The second half of the book is more exciting. 书的后半部分比较刺激有趣。 The two halves of the city were reunited in 1990. 这座城市的两部分于1990年重新统一。 the left half of the brain 左脑 the lower half of the window 窗户的下半部 the northern half of the country 该国北半部 - in half
I've divided the money in half. 我把钱平均分成了两半。 - by half
We'll need to reduce the weight by half. 我们得把重量减轻一半。
Grammar Point half / whole / quarterhalf / whole / quartersee also halve- Quarter, half and whole can all be nouns:
quarter、half 和 whole 均可作名词: Cut the apple into quarters. 把苹果切成四等份。 Two halves make a whole. 两个一半构成一个整体。
- Whole is also an adjective:
whole 亦作形容词: I’ve been waiting here for a whole hour. 我在这儿等了整整一个小时。
- Half is also a determiner:
half 亦作限定词: Half (of) the work is already finished. 工作已经完成了一半。 They spent half the time looking for a parking space. 他们花了一半的时间寻找停车位。 Her house is half a mile down the road. 她的房子在这条路上前面半英里远的地方。
注意在此用法中 half 前面不加 a 或 the: I waited for half an hour 我等了半个小时。 - I waited for a half an hour.
- Half can also be used as an adverb:
This meal is only half cooked. 这饭只煮了个半熟。
Extra ExamplesCut the remaining half into large chunks. 把剩下的一半切成大块。 Over a half of all accidents happen in the home. 超过半数的事故是在家里发生的。 She's four and a half years old now. 她现在四岁半。 in the latter half of the 19th century 19 世纪后半叶 the rear half of the car 汽车的后半部 We split the work half and half. 我们把工作对半分。
Oxford Collocations Dictionaryadjective- first
- second
- last
- …
- by half
- in half
- in the… half
- …
- about half
- almost half
- around half
- …
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either of two periods of time into which a sports game, concert, etc. is divided (比赛、音乐会等的)半场,半局 - in the… half
No goals were scored in the first half. 上半场没有得分。 - half of something
She played well in the second half of the match. 她在比赛的下半场打得很好。 He made two superb saves in the first two minutes of the half. 他在上半场的前两分钟做出了两次精彩的扑救。 We had a few chances to score in both halves. 我们在上半场都有几次得分的机会。
Oxford Collocations Dictionaryadjective- first
- second
- last
- …
- by half
- in half
- in the… half
- …
- about half
- almost half
- around half
- …
- in the… half
- (also half back, North American English halfback)
one of the defending players in hockey or rugby whose position is between those who play at the front of a team and those who play at the back see also scrum half(曲棍球或橄榄球的)前卫 - (also half back, North American English halfback, tailback)
one of the two attacking players in american football whose position is behind the quarterback and next to the full backs (美式橄榄球的)半卫 - (also half back, North American English halfback)[uncountable]
the position a half back plays at (also called a tailback in american football) 到一半程度;半 - (British English, informal)
half a pint (= 0.568 of a litre in the UK and some other countries, and 0.473 of a litre in the US) of beer or a similar drink (啤酒等饮料的)半品脱 More Like This Silent lettersSilent letters
Word OriginOld English half, healf, of Germanic origin; related to Dutch half and German halb (adjectives). The earliest meaning of the Germanic base was ‘side’, also a noun sense in Old English.
Idioms
and a half
do nothing/not do anything by halves
go half and half | go halves (with somebody)
the half of it
have a good mind to do something | have half a mind to do something
used to say that you think you will do something, although you are not sure Topics Doubt, guessing and certaintyc2想去做某事,可能会做某事(但不确定) used to say that you think that what somebody has done is bad and should do something about it, although you probably will not (表明有心做某事,但未必采取行动)
how the other half lives
the way of life of a different social group, especially one much richer than you 另一类人的生活方式(尤指比自己富有得多的人)
it’s six of one and half a dozen of the other
- (saying)
used to say that there is not much real difference between two possible choices Topics Preferences and decisionsc2半斤八两;不相上下
time and a half
one and a half times the usual rate of pay 通常工资的一倍半 We get time and a half on Sundays. 星期天我们有一个半小时的时间。
too clever, etc. by half
- (British English, informal, disapproving)
clever, etc. in a way that annoys you or makes you not trust somebody/something 聪明(等)过头