half

音標(biāo)發(fā)音

• 英式音標(biāo) [hɑ?f]
• 美式音標(biāo) [h?f]
• 國際音標(biāo) [hɑ:f, h?f]
• 英式發(fā)音
• 美式發(fā)音

基本解釋

• n. 一半；半場；半學(xué)年
• adv. 一半地；部分地
• adj. 一半的；不完全的；半途的
• n. (Half)人名；(阿拉伯)哈勒夫；(德)哈爾夫；(英)哈夫

同根派生

• adj性質(zhì)的同根詞

  halfway：中途的；不徹底的。

• adv性質(zhì)的同根詞

  halfway：到一半；在中途。

• vt性質(zhì)的同根詞

  halve：二等分；把……減半。

• half相關(guān)詞

用法辨析

adj. (形容詞)

• half用作形容詞的意思是“一半的”,表示“半個某物”時(shí),英式英語多用half a...; 美式英語多用a half...。
• half也可作“(…點(diǎn)鐘)以后半小時(shí)”解。
• half可直接修飾名詞,但不可直接修飾代詞。

n. (名詞)

• half用作名詞的基本意思是“半”,指把一個整體分成不一定平等的兩部分。引申可指“二分之一”,體育比賽的“半場”,公共汽車或火車上的“半票”,在口語中還可指啤酒等液體的“半品脫”。
• half of后接名詞或代詞作主語時(shí),動詞的數(shù)應(yīng)根據(jù)名詞或代詞而定。如果該名詞或代詞是復(fù)數(shù)形式,則其后的謂語動詞用復(fù)數(shù)形式; 反之,則用單數(shù)形式。
• half常接介詞of,意為“…的一半”, of后可接除尺寸、數(shù)量以外的名詞或代詞。
• half前一般不用定冠詞,但在有形容詞或相當(dāng)于形容詞的詞確切地表示出所談?wù)摰哪且患聲r(shí),才可加定冠詞。

adv. (副詞)

• half用作副詞時(shí)的意思是“半”“部分地”,還可指同等程度的“一半…,一半…”。有時(shí)僅用來加強(qiáng)語氣,無詞意。

• half使用方法
• half詳細(xì)辨析

英漢例句

用作形容詞 (adj.)

用作定語: ～+ n.

• Half the apples are bad.
  這些蘋果有一半是壞的。

用作名詞 (n.)

• Cut the apple into halves.
  把這個蘋果切成兩半。

用作副詞 (adv.)

• He was half under the bed, with his legs sticking out.
  他一半身子在床上,腿伸在外面。

• half更多例句

詞組短語

用作形容詞 (adj.)

～+名詞

• half holiday 半日假
• half a century 半個世紀(jì)
• half a dozen 半打
• half boots 半高筒靴
• half knowledge 一知半解

• half更多詞組

英英字典

劍橋英英字典

• either of the two equal or nearly equal parts that together make up a whole
• (SPORT) either of two periods of time into which a game is divided
• (DRINK) half a pint of a drink, especially beer
• (TICKET) a ticket that is cheaper because it is for a child

柯林斯英英字典

• Halfof a number, an amount, or an object is one of two equal parts that together make up the whole number, amount, or object.
• Half is also a predeterminer.
• Half is also an adjective.
• You use half to say that something is only partly the case or happens to only a limited extent.
• In games such as football, American football, rugby, and basketball, games are divided into two equal periods of time which are called halves.
• You use half to say that someone has parents of different nationalities. For example, if you are half German, one of your parents is German but the other is not.
• You use half past to refer to a time that is thirty minutes after a particular hour.
• You can use half before an adjective describing an extreme quality, as a way of emphasizing and exaggerating something.
• Half can also be used in this way with a noun referring to a long period of time or a large quantity.
• You use not half to emphasize a negative quality that someone has.
• If two people go halves, they divide the cost of something equally between them.

• half劍橋字典
• half柯林斯字典

專業(yè)釋義

計(jì)算機(jī)科學(xué)技術(shù)

• 一半

  Buffer overflow vulnerabilities account for about half Of all the software vulnerabilities.
  在所有的軟件安全漏洞中，緩沖區(qū)溢出漏洞大約占一半。

• 半

交通運(yùn)輸工程

• 一半

  As an important chemical raw material——petroleum,more than half of it has been used as the vehicles’fuel,so developing the energy-saving vehicles and using the alternative energy is the main way to ease the energy pressure at the present time.
  作為重要化工原料——石油,有一半以上是作為機(jī)動車的燃料,因此開發(fā)節(jié)能車輛和使用替代能源是減緩目前能源壓力的主要途徑。

  體育

• 相同得分，擊數(shù)相同
• 半場

機(jī)械工程

• 半雙工制