kick off踢、脱（鞋子等）；（足球比赛）开球；开始：
   Jack kicked off his shoes and dropped into the bed. 杰克踢掉鞋子，就倒在床上睡觉了。
   The match kicked off at 2:30. 比赛于2点半开始了。
kick out踢开；驱逐；解雇：
The man was kicked out because he had offended the manager. 那个人因得罪了经理而被一脚踢了出去。
kill off消灭，歼灭；把••••••扼杀，把•••••否决：
   The frost killed off most of the pests. 那场霜把大部分害虫冻死了。
   He made a suggestion but the boss killed it off. 他提了个建议，但遭到老板的否决。
kill sb. with kindness过分溺爱某人，把某人宠坏，客气得使人不知所措：
   He killed me with kindness when I dropped in at his house. 我顺便到他家看看时，他客气得叫我不知所措。
   Parents should make sure they don’t kill children with kindness. 做父母的应该注意不要过分溺爱自己的孩子。
kill time消遣，消磨时间：
   There was a long wait of two hours before the next train, so they went for a walk to kill time. 下一趟火车还得等两个小时才来，因此他们就去散步，以消磨时间。
kind of有点儿；有几分：
   Having worked the whole morning, I felt kind of tired. 干了整整一上午的话，我感到有点儿累了。
kinds of各种各样的：
   The case is full of all kinds of books and magazines. 箱子里装满了各种各样的书刊杂志。
kiss each other goodbye吻别：
   At the station they kissed each other goodbye. 他们在车站吻别。
kiss the ground / dust屈服，卑躬屈膝；被杀死：
    He kissed the ground in face of the enemy’s torture. 他在敌人的拷打面前屈服了。
    “Another of the bad guys has kissed the dust!” cried the little boy as he watched the movie.那个小男孩一边看电影，一边喊道，“又干掉了一个坏家伙”！
knock about（用拳）打击，撞击，乱丢乱摔；殴打，虐待：
  He knocked the tiger about fiercely until it lay dead. 他挥拳痛击老虎，直到把它打死在地方才住手。
  The bike could have lasted him longer if it had not been knocked about so much. 要不是那样乱丢乱摔，他的自行车还可以多用些时候。
  He was often knocked about by the shop owner. 他常常遭到店老板的拳打脚踢。
knock against撞在•••••••上：
    I knocked my knee against the chair this morning. 今天上午我的膝盖撞在椅子上。
knock at敲，击，叩：
   Someone is knocking at the window. 有人在敲窗户。
knock down撞倒，打倒，击落；拆除，拆散；杀价：
   He was knocked down by a car and was rushed to the hospital. 他被汽车撞倒后，随即被送往医院。
   With one blow he knocked his opponent down. 他一拳把对手打倒。
   These old house will sooner or later be knocked down. 这些老房子迟早得拆掉。
  The man wanted 120 Yuan for his bike but I managed to knock the prick down to 100 Yuan. 那个人的自行车出价要120元，可是我设法把它砍到了100元。
knock down on the head给予致使一击；挫败：
  The failure again knocked him down on the head. 失败再次给他以致命的打击。
knock into撞在（某人）身上：
  The boy rushed out of his classroom and knocked into his teacher. 那男孩冲出教室，一头撞在老师身上。
knock off敲掉；停工，下班；削掉（价钱）；偷，给：
   He knocked the ash off his pipe before he went on. 他把烟灰磕掉，然后继续往下说。
   The ice covered over the stone was knocked off.　敲掉了石头上的冰。
　 Let’s knock off our work and have a rest.　咱们停下来休息一会吧。
  They knocked off 1,000 dollars from the price.　他们把价钱削减了一千美元。
  I heard that they knocked off Smith’s shop last night.　我听说他们昨晚抢劫了史密斯的商店。
knock out击倒（某人），击昏（某人）；使（某人）震惊，使（某人）倾倒；损坏：
  The falling ladder hit him on the head and knocked him out。 梯子倒下来击中了他的头部，把他打昏过去。
   She was knocked out by the news.　那则消息把她惊呆了。
   Wow! This scenery really knocks me out.　哇！这儿的景色简直把我迷住了。
   The power supply system knocked out by the typhoon has been repaired.　被台风刮坏的供电系统已经修复。
knock over撞翻，打倒；使••••••心烦意乱：
    The boy accidentally knocked the oil – can over.　那男孩不小心把油壶弄翻了。
    The news knocked him over completely.　这个消息使他心烦意乱，不知所措。
knock sb. off one’s feet使某人惊慌失措：
　　What knocked people of their feet?　是什么使人们惊慌失措？
knock sb. off one’s shape训练，锻炼；整理，安排；整顿；塑造：
   We know he’s lazy, but we’ll soon knock him into shape.　我们知道他很懒，但我们很快就能使他变得勤快起来。
   Let’s get these ideas knocked into shape.　让我们把这些意见整理出来。
   The public order must be knocked into shape.　必须整顿好公共秩序。
knock sth. on the head摧毁或挫败（计划等）：
   The bad weather knocked their holiday plan on the head.　坏天气把我们的度假计划给搅了。
knock sth. together匆忙拼凑成（某物）；草草做成（某物）：
  He knocked a bed together with a few boards.　他用几块木板临时拼成一张床。
knock to pieces粉碎，打碎••••••：
  I knocked the vase to pieces with carelessness.　我不小心打碎了花瓶。
knock the bottom out of 批驳，使（论点）站不住脚；使失败：
  What you said knocks the bottom out of his argument.　你的话把他的论点驳得体无完肤。
   The reality knocks the bottom out of my dream.　现实使人梦想付之东流。
knock the daylight out of痛打：
  The father was to angry that he knocked the daylight out of his little son.　父亲气得把他的小儿子狠狠打了一顿。
knock the spirit out of sb. 　在精神上挫败某人，使某人失去生气：
  Hearing he failed the exam seemed to have knocked the spirit out of him.　一听说自己考试不及格，他好像汇了气的皮球，变得消沉起来。
knock up敲门把••••••叫醒：
   We’re very sorry to knock you up at this hour.　很对不起，在这个时候敲门把你叫起来。
know a thing or two富有经验；见多识广；精明：
   Turn to him if you’re in difficulty, he knows a thing or two.　你有困难可以找他，他见多识广。
know about听说，了解：
   I didn’t know abut his mother’s death until last week.　我上星期听说他母亲去世了。
know better than to do sth.　知道不去做某事：
   You ought to know better than to go swimming straight after a meal.　你应该知道刚吃完饭是不能游泳的。
know enough to come in out of the rain通情达理，知道怎样料理自己：
   He’s so stupid he doesn’t even know enough to come in out of the rain.　他很笨，一点道理也不懂。
know if / whether one is coming or going保持头脑清醒，知道该做什么：
   The young man is son must in love that he hardly knows if he is coming or going.　那个小伙子正处于热恋之中，简直到了神魂颠倒的地步。
know of听说，了解：
   I know of him, but I’ve never met him.　我听说过他，可从来没有见过他。
　 -Is he coming tomorrow?　他明天会来吗？
   -Not that I know of.　我认为他不会来。
用法导航　
　　　know of 和know about,意思和用法均相同，要互相换用，它们着重指听说过或了解有关某事的情况，注意和know的区别。例如：
     I know of / about him but I don’t know him.　我知道有他这么个人（听说过他），但并不认识他。
know one’s business精通自己所干的一行；在行：
  Why don’t you get some help from him? He really knows his business.　你怎么不去找他帮忙呢？他很在行。
know one’s job懂行，在行：
  He is a hard – working man and knows his job. 他很勤奋，也很懂行。
know one’s own mind心中有数；自己心里清楚：
  It’s up to you to decide. After all, you know your own mind. 一切由你决定，毕竟你自己最了解自己。
know sb. by sight和某人面熟：
   I knew him by sight, but I’ve never had chance to talk to him.　我和他面熟，但从没有机会和他交谈。
know from辨别，区分：
   It is not always easy to know right from wrong.　分辨是非并不总是很容易的。
know sth. backwards对某事了解得一清二楚：
  You can’t fool me I know the whole story backwards.　他骗不了我，这件事我了解的清清楚楚。
know sth. by heart熟悉某事，能背诵某事：
  The little girl knows a good many folk songs by heart.　那个小女孩记得好多民歌。
know what’s what明白事理；有判断力；在行：
   When it comes to maths, he knows what’s what.　说到数学，他是很内行的。
known as被称为，人们称作，是有名的：
   The first tomb, known as ChinagLing, was built at the beginning of the 15th century.　第一座墓叫做长陵，是十五世纪初修理的。
　　He was better know as a poet.　作为诗人，他名望更大。
know for因•••••而出名：
  Guilin is well known for its beautiful sceneries.　桂林因风景优美而出名。
  Edison is well known for his great inventions.　爱迪生因他的伟大发明而出名。
known to为••••••所知；对••••••了解：
  The name of Dr. Norman Bethune is known to most Chinese.　大多数中国人都知道诺尔曼.白求恩大夫的名字。
  The use of gunpowder was known to the Chinese people before the Europeans.　中国人懂得使用火药在欧洲人之前。
known to all 众从所周知：
  Taiwan belongs to China, as is known to all.　众所周知，台湾是中国的领土。
  China’s views on this problem are known to all.　中国对这一问题的看法是众所周知的。
known to (in)　history历史上有过的：
  Abraham Lincoln was one of the greatest and most inspiring American presidents every known to history.　亚伯拉罕.林肯是历史上最伟大的，最富有感情召力的美国总统。