half

音標發(fā)音

• 英式音標 [hɑ?f]
• 美式音標 [h?f]
• 國際音標 [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,英式英語多用half a...; 美式英語多用a half...。
• half也可作“(…點鐘)以后半小時”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,動詞的數(shù)應根據(jù)名詞或代詞而定。如果該名詞或代詞是復數(shù)形式,則其后的謂語動詞用復數(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于形容詞的詞確切地表示出所談論的那一件事時,才可加定冠詞。

adv. (副詞)

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

• half使用方法
• half詳細辨析

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
• 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

計算機科學技術(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

機械工程

• 半雙工制