knock
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vi. 敲；打；敲击
vt. 敲；打；敲击；批评
n. 敲；敲打；爆震声
n.
短促的敲打（声）；爆震声；敲击声；敲门（或窗等）声
vi.
猛烈敲击；与某物相撞；撞到了桌子；
vt.
（心）怦怦跳；把…撞击成（某种状态）；批评；
变形
复数：knocks过去式：knocked过去分词：knocked现在分词：knocking第三人称单数：knocks
双语释义
n.(名词)[C]短促的敲打(声) (sound of) a sharp blow
[C]爆震声 (in an engine) sound of knocking
[C](板球赛的)一局 (in cricket) innings
[C]一件倒霉事或麻烦事 a piece of bad luck or trouble
v.(动词)vt. & vi. 敲,击,打 hit or strike
vt. 批评,数落,非难 say critical or insulting things about sb/sth
英英释义
knock[ nɔk ]
n.
the sound of knocking (as on a door or in an engine or bearing)
"the knocking grew louder"
同义词：knocking
negative criticism
同义词：roast
a vigorous blow
"the sudden knock floored him"
同义词：bashbangsmashbelt
a bad experience
"the school of hard knocks"
the act of hitting vigorously
同义词：beltrapwhackwhang
v.
deliver a sharp blow or push :
"He knocked the glass clear across the room"
同义词：strike hard
rap with the knuckles
"knock on the door"
knock against with force or violence
同义词：bump
make light, repeated taps on a surface
同义词：taprappink
sound like a car engine that is firing too early
同义词：pinkping
find fault with; express criticism of; point out real or perceived flaws
"Don't knock the food--it's free"
同义词：criticizecriticisepick apart
词汇搭配
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
loud knock重重的敲门声
good knock打一局好球
first knock第一局球
bad knock损失不少钱财
damaging knock破坏性的挫折
hard knock沉重的打击
名词+～
engine knock发动机的爆震声
用作动词 (v.)
～+名词
knock a ball拍球
knock colds消除感冒
knock head撞头
knock sb's hometown抨击某人的家乡
knock sb's play抨击某人的戏剧
knock such notions给人以深刻的观念
knock the ash敲烟灰
knock the bottom of the box敲箱子底
knock the dust敲打灰尘
knock the England team挖苦英格兰队
knock the foreign policy抨击外交政策
knock the furniture碰倒家具
knock the glass打破玻璃
knock the nail钉钉子
knock the price降价
knock the wall拆墙
knock the worry摆脱忧愁
～+副词
knock badly剧烈撞击
knock loudly发出大声地碰撞
knock about〔around〕流浪
knock down撞倒,拆除,挣(钱)
knock down a machine把机器拆卸开来
knock down a plane击落飞机
knock down an A in history历史考得优等分数
knock down good money挣很多钱
knock down some cash偷一些现金
knock off停止工作,完成,结束,快速写
knock off a few lines匆匆写几句
knock off work歇工
knock out击倒,使昏迷或入睡,彻底击败
knock out the enemy guards干掉敌人哨兵
knock oneself out to get through the difficulty竭尽全力渡过困难
knock oneself out preparing for the experiment努力为实验做好准备
knock oneself out with excessive work过度工作而筋疲力尽
knock over打翻,轻易击败
knock over a lamp打翻一盏灯
knock up击打,草率或匆忙地作出
knock up a meal匆匆做好一餐饭
～+介词
knock against偶然碰到
knock at a door敲门
knock into将…击打进或撞进,偶然碰到
knock into the old teacher偶然碰到那位老教师
knock sb off sb's feet把某人打倒在地
knock on the door敲门
knock sb on the head打某人的头
knock sth on the head破坏某事
knock sth to pieces把某物打碎
knock with a bat用球拍打
词组短语
knock on撞击撞出；敲击（门、窗）
knock at敲（门、窗等）
knock off击倒；停工；中断
knock down击倒；拆卸
knock at the door敲门；把……撞倒；撞墙
knock out敲空；击倒；打破；使筋疲力竭
knock it off停止做；住口，别再讲下去了
knock on the door敲门
knock over打翻；撞倒
knock in（把钉子）钉入
knock on wood敲木头，企求好运；吉人天相
knock up敲门唤醒；[英口]筋疲力尽；往上敲
knock back（摇把）反击，（活塞）逆行，（曲轴）反转；反座；回击，击退；使...大吃一惊
knock against撞击，与…冲突；偶然遇见
knock sensor爆振传感器；进气流量传感器
knock into撞上；与…相撞
knock off work敲落工作；歇工
同近义词辨析
knock, beat, strike, hitknock敲门；
beat打鼓;连续打；
strike敲锣，钟敲几点，猛的一击；
hit击中，打一下
pat, knock, rap, tap这组词都有“敲、击”的意思，其区别是：
pat指用手轻拍以示同情、赞同或爱抚。
knock指用拳头或其它器械猛敲或猛打；也指用手轻敲某物。
rap指用手指或木棒等快速地轻敲或急拍。
tap多指慢慢地连续地轻击或轻拍。
双语例句
用作动词(v.)
Someone is knocking at the door.
有人在敲门。
One may knock to signal one's presence to others.
可以用敲击发出的声音向别人表明自己的存在。
He knocked a big hole in the wall.
他把墙撞出了一个大洞。
I am so hurried as to knock into my teacher.
我如此匆忙以至于撞到老师身上。
The man is knock down by the bicycle.
这个男人被自行车撞倒了。
She knocked the bottom out of our argument.
她把我们的论点驳得体无完肤。
用作名词(n.)
There was a knock at the window.
有人敲了一下窗户。
I heard footsteps, then a knock on the door.
我听到脚步声，随后是敲门的声音。
There was no answer to my knock, so I went away.
我敲门没人应，所以就走开了。
She took a bad knock when her husband died.
丈夫的死,使她受到沉重的打击。
When I fall, I get a terrible knock on the head.
我摔倒时头撞得很厉害。
权威例句
IFN-gamma potentiates atherosclerosis in ApoE knock-out mice.Suppression of Intestinal Polyposis in ApcΔ716 Knockout Mice by Inhibition of Cyclooxygenase 2 (COX-2)
A Parallelization Research for FY Satellite Rainfall Estimate Day Knock off Product Algorithm
Construction of Escherichia coli K‐12 in‐frame, single‐gene knockout mutants: the Keio collection
Defective haematopoiesis and vasculogenesis in transforming growth factor-beta 1 knock out mice.
Effects of matrix metalloproteinase-9 gene knock-out on the proteolysis of blood-brain barrier and white matter components after cer...
Generation and characterization of androgen receptor knockout (ARKO) mice: an in vivo model for the study of androgen functions in s...
Dual Roles for Glucokinase in Glucose Homeostasis as Determined by Liver and Pancreatic β Cell-specific Gene Knock-outs Using Cre R...
Green fluorescent protein expression and colocalization with calretinin, parvalbumin, and somatostatin in the GAD67-GFP knock-in mou...
Baba T, Ara T, Hasegawa M, Takai Y, Okumura Y, Baba M et al.. Construction of Escherichia coli K-12 in-frame, single-gene knockout m...
knock
knock: [OE] knock is a classic onomatopoeic word: that is to say, it originated in a direct imitation of the sound it denotes. The similar Swedish knacka ‘knock’ may be related. The figurative use of the word for ‘criticize’ originated in late 19th-century America.
knock (v.)
Old English cnocian (West Saxon cnucian), "to pound, beat; knock (on a door)," likely of imitative origin. Meaning "deprecate, put down" is from 1892. Related: Knocked; knocking. Knock-kneed first attested 1774. Knock-down, drag-out is from 1827. Command knock it off "stop it" is first recorded 1880, perhaps from auctioneer's term for "dispose of quickly:"
At the commencement of the sales, he gave every one that wanted to purchase a paper containing a description of the lands that were to be sold; and, as the sales were cried, he called over the numbers and described the land; and when it got up to one dollar and a quarter an acre, if no body bid, after it was cried two or three times, he would say, knock it off, knock it off. [U.S. Senate record, 1834]
knock (n.)
mid-14c., from knock (v.). As an engine noise, from 1899.
1. Knock before you enter.
进来前先敲门。
《牛津词典》
2. You don't have to knock—just walk in.
不必敲门—进来就是了。
《牛津词典》
3. I was wakened by a knock at the door.
敲门声把我吵醒了。
《牛津词典》
4. They heard a knock at the front door.
他们听到前门有一敲门声。
《柯林斯英汉双解大词典》
5. They were interrupted by a knock at the door.
他们被敲门声打断了。
《牛津词典》
6. Late that evening, there was a knock at the door.
那天深夜，有人敲过门。
《牛津词典》
7. He rushed into the room without troubling to knock.
他连门也懒得敲就闯进屋去。
《牛津词典》
8. I was so involved in my book I didn't hear you knock.
我全神贯注在看书，没听到你敲门。
《牛津词典》
9. No sooner had I sat down than there was a loud knock on the door.
我刚坐下就有人大声敲门。
《牛津词典》
10. You should knock before you enter.
你进来前应先敲门。
youdao
11. Nothing remained to do but to knock.
只需要敲门了。
youdao
12. I didn't knock anyone.
我没有打任何人。
youdao
13. Please don't knock down all those cans.
请不要敲那些罐头。
youdao
14. Children knock buckets while riding bikes.
孩子们会在骑自行车时敲击木桶。
youdao
15. Suddenly there was another knock at the door.
突然，又有人敲门。
youdao
16. Deeply involved in his book, he didn't hear my knock.
他沉浸于书本，没有听到我的敲门声。
youdao
17. Office managers knock down walls to encourage team building.
办公室经理打破了这一隔阂，鼓励团队建设。
youdao
18. What time do you knock off work?
你什么时候下班？
《牛津词典》
19. He got a nasty knock on the head.
他头部遭到重重一击。
《牛津词典》
20. Let's knock off for lunch.
咱们收工吃午饭吧。
《牛津词典》
21. There was a sharp knock on the door.
敲门声大作。
《牛津词典》
22. I managed to knock him down to $400.
我设法让他把价格降到了400元。
《牛津词典》
23. Do you want to knock off early today?
你今天想早点歇工吗？
《牛津词典》
24. Why doesn't he just knock the wall down?
他为什么不索性把墙拆掉？
《柯林斯英汉双解大词典》
25. They managed to knock a hole in the wall.
他们设法在墙上凿了个洞。
《牛津词典》
26. I got it all taken care of, knock on wood.
我把它各个方面都照顾到了，但愿好运仍在。
《柯林斯英汉双解大词典》
27. They had to knock the door down to get in.
他们不得不破门而入。
《牛津词典》
28. You look fabulous—you'll knock 'em dead tonight.
你看上去漂亮极了—今晚肯定把他们迷倒。
《牛津词典》
29. If I get this report finished I'll knock off early.
如果我完成这个报告就会早点儿下班。
《柯林斯英汉双解大词典》
30. Be careful you don't knock your head on this low beam.
小心，别把头撞在这矮梁上。
《牛津词典》
knock
