听声词典

knock

K 开头单词

音标发音

  • 英式音标 [nɒk]
  • 美式音标 [nɑːk]
  • 国际音标 [nɔk]
  • 英式发音
  • 美式发音

基本解释

  • vi. 敲；打；敲击
  • vt. 敲；打；敲击；批评
  • n. 敲；敲打；爆震声

词源解说

  • 直接源自古英语的cnocian；最初源自古挪威语的knoka，意为打击，打。

同根派生

  • n性质的同根词
    knocker：门环；敲击者；吹毛求疵的人。

用法辨析

    n. (名词)

  • knock用作名词的基本意思是“狠狠的一击,打击”,用于比喻可指“不幸,挫折,艰苦”,引申可指“敲击声,敲击信号”。
  • knock是抽象名词,但却可数,可加不定冠词修饰,也可用复数形式,表示复数概念。
  • knock后接at〔to〕的介词短语表示侧重敲击的对象; 接on的介词短语侧重敲击的位置。

    • v. (动词)

  • knock的基本意思是用手、拳等硬物“敲打”,指出声地、连续地猛击,引申可指发出敲击或爆裂的声响。还可表示“批评”“数落”“非难”。
  • knock可用作及物动词,也可用作不及物动词。用作及物动词时,可接名词或代词宾语,也可接以形容词充当补足语的复合宾语。可用于被动结构。
  • knock是瞬间动词,如表示重复动作,须用进行体。

英汉例句

    用作名词 (n.)

  • The hard knock made her cry.
    重重一击把她打哭了。

    • 用作动词 (v.)

    用作不及物动词: S+～(+A)

  • Please knock before entering.
    进来先敲门。

    • 用作及物动词: S+～+ n./pron.

  • The children were knocking the bottom of the box.
    孩子们在敲箱子底。

    • 用作宾补动词: S+～+ n./pron. + adj.

  • He knocked me flat with one punch.
    他一拳把我打倒。

词组短语

    用作名词 (n.)

    动词+～

  • get the knock 被解雇,遭到失败
  • hear a knock 听到敲门声
  • receive a knock 受到挫折
  • stand the knock 忍受指责
  • take a knock 受到严重损失

    • 形容词+～

  • gentle knock 轻轻的敲门声

英英字典

    剑桥英英字典

  • (MAKE NOISE) to repeatedly hit something, producing a noise
  • (HIT) to hit, especially forcefully, and cause to move or fall
  • (CRITICIZE) to criticize, especially unfairly
  • (NOISE) a sudden short noise made when someone or something hits a surface
  • (HIT) the act of something hard hitting a person or thing

    • 柯林斯英英字典

  • If you knock on something such as a door or window, you hit it, usually several times, to attract someone's attention.
  • Knock is also a noun.
  • knocking
  • If you knock something, you touch or hit it roughly, especially so that it falls or moves.
  • Knock is also a noun.
  • To knock someone into a particular position or condition means to hit them very hard so that they fall over or become unconscious.
  • To knock a particular quality or characteristic out of someone means to make them lose it.
  • If you knock something or someone, you criticize them and say unpleasant things about them.
  • If someone receives a knock, they have an unpleasant experience which prevents them from achieving something or which causes them to change their attitudes or plans.
  • to knock someone or something into shape&rarrsee shape

专业释义

    能源科学技术

  • 爆震

    The results show that the knock frequency band of compound combustion is between 5 and 10 kHz.
    负荷和预混合燃料性质对复合燃烧爆震频率带影响不大。

    交通运输工程

  • 爆震

    On this base, we designed the ECU hardware and software of the knock feedback controlling ignition system.
    分析了爆震以及爆震对发动机的影响,并在此基础上实现了爆震反馈汽油机点火的电控单元的硬件与软件的设计。

  • 敲击

    • 物理学

  • 敲击术
  • 爆震
  • 敲击声