新概念英语第二册语法:knock常用短语

2021-05-31 16:17:00来源:网络

  新东方在线新概念小编为大家带来新概念英语第二册语法:knock常用短语一文,希望对大家的新概念英语学习有所帮助。更多精彩尽请关注新东方在线新概念英语学习网(http://nce.koolearn.com )!

  1、knock at

  该短语表示“敲(门、窗等)”。有时,knock也会用作名词,表示“敲击”,后面也是紧跟介词at。如:

  He wondered whether it would be proper to knock at her door. (他不知道敲她的门是否恰当。)

  I was preparing for bed when I heard a knock at the door. (我正准备睡觉时听到有人敲门。)

  2、knock...off

  该短语表示“把...撞倒”,off后面一般接地点。但knock后面也可以接比例或数字,表示“减少”,此时的比例

  或数字也可以放到off后面。如:

  I knocked the vase off the table and broke it. (我把花瓶从桌子上碰掉下来,摔碎了。)

  The shop assistant knocked 10% off the bill. (店员给了10%的优惠)

  It cost me 10 but I'll knock off 20% as it's no longer new. (那是我花10英镑买的,因为已经旧了,我会

  减价20%。)

  3、knock off

  与knock...off不同的是,knock off中间一般不插入其他成分,表示“做完某事;下班”。如:

  We knock off at 12:30 for lunch. (我们十二点半时停下工作去吃饭。)

  I can knock off a poem in five minutes. (我能在五分钟内写一首诗。)

  4、knock over

  该短语表示“撞倒;消除”,需要注意的是:宾语是名词的话,可以放在knock和over中间,也可以放到over后面;

  宾语是代词的话,则只能放在中间。如:

  Don't knock over the bowl of water. (别把那碗水打翻了。)

  =Don't knock it over.

  The students knocked over every difficulty. (学生们克服了每一个困难。)

  =The students knocked it over.

  5、knock out

  该短语表示“击倒;打昏”。需要注意的是:宾语是名词的话,可以放在knock和over中间,也可以放到over后面;

  宾语是代词的话,则只能放在中间。如:

  The enemy charged up the mountain, attempting to knock out our forces. (敌人向山上冲锋,企图把我们的

  兵力摧毁掉。)

  In the fight, the thief knocked the policeman out. (在搏斗中,小偷把警察打昏了。)

  除了以上教材中出现的短语以外,下面这些有关knock的短语也较为常用:

  6、knock down

  该短语表示“击倒;撞倒;拆除”。如:

  The policemen had to knock down the door to get in. (警察为了进去得撞倒门。)

  Knock down the machine before shipping. (在装运前把机器拆卸开来。)

  7、knock up

  该短语表示“匆忙做完;使...精疲力尽”。如:

  Can you knock up a meal for us now? (你能为我们赶快做顿饭吗?)

  I was completely knocked up from overwork. (由于工作过度,我完全累垮了。)

  8、knock it off

  该短语经常用作提示语,表示“别再讲下去”。如:

  Knock it off, will you? I can't make a phone call with all this noise going

  on. (不要讲话了,好吗?这样闹我简直无法打电话了。)

  Will you kids knock it off? I can't study. (够了,小鬼们,停下来。我无法专心念书。)

  以上就是新东方在线新概念英语学习网为你带来的新概念英语第二册语法:knock常用短语,更多精彩内容。敬请关注新东方在线新概念英语学习网(http://nce.koolearn.com)。



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