单词盒子

half

H 开头单词

音标发音

  • 英式音标 [hɑːf]
  • 美式音标 [hæf]
  • 国际音标 [hɑ:f, hæf]
  • 英式发音
  • 美式发音

基本解释

  • n. 一半；半场；半学年
  • 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)哈尔夫；(英)哈夫

同根派生

  • adj性质的同根词
    halfway：中途的；不彻底的。
  • adv性质的同根词
    halfway：到一半；在中途。
  • vt性质的同根词
    halve：二等分；把……减半。

用法辨析

    adj. (形容词)

  • half用作形容词的意思是“一半的”,表示“半个某物”时,英式英语多用half a...; 美式英语多用a half...。
  • half也可作“(…点钟)以后半小时”解。
  • half可直接修饰名词,但不可直接修饰代词。

    • n. (名词)

  • half用作名词的基本意思是“半”,指把一个整体分成不一定平等的两部分。引申可指“二分之一”,体育比赛的“半场”,公共汽车或火车上的“半票”,在口语中还可指啤酒等液体的“半品脱”。
  • half of后接名词或代词作主语时,动词的数应根据名词或代词而定。如果该名词或代词是复数形式,则其后的谓语动词用复数形式; 反之,则用单数形式。
  • half常接介词of,意为“…的一半”, of后可接除尺寸、数量以外的名词或代词。
  • half前一般不用定冠词,但在有形容词或相当于形容词的词确切地表示出所谈论的那一件事时,才可加定冠词。

    • adv. (副词)

  • half用作副词时的意思是“半”“部分地”,还可指同等程度的“一半…,一半…”。有时仅用来加强语气,无词意。

英汉例句

    用作形容词 (adj.)

    用作定语: ～+ n.

  • Half the apples are bad.
    这些苹果有一半是坏的。

    • 用作名词 (n.)

  • Cut the apple into halves.
    把这个苹果切成两半。

    • 用作副词 (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。

词组短语

    用作形容词 (adj.)

    ～+名词

  • half holiday 半日假
  • half a century 半个世纪
  • half a dozen 半打
  • half boots 半高筒靴
  • half knowledge 一知半解

英英字典

    剑桥英英字典

  • 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.

专业释义

    计算机科学技术

  • 一半

    Buffer overflow vulnerabilities account for about half Of all the software vulnerabilities.
    在所有的软件安全漏洞中，缓冲区溢出漏洞大约占一半。

  • 半

    • 交通运输工程

  • 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.
    作为重要化工原料——石油,有一半以上是作为机动车的燃料,因此开发节能车辆和使用替代能源是减缓目前能源压力的主要途径。

    体育

  • 相同得分，击数相同
  • 半场

    • 机械工程

  • 半双工制