[nəʊ]     [noʊ]    
  • v.了解;知道;认识
  • n.知情
knowable knower knew known knowing knows



  1. vt. & vi. 知道,懂得 have sth in one's mind or memory as a result of experience or learning or information
  2. vt. & vi. 认识,了解,熟悉 be acquainted with; be familiar with


know : 知道, 了解 ...
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know : 了解, 认识 ...
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  1. the fact of being aware of information that is known to few people;

    "he is always in the know"

  1. be cognizant or aware of a fact or a specific piece of information; possess knowledge or information about;

    "I know that the President lied to the people"
    "I want to know who is winning the game!"
    "I know it's time"

  2. know how to do or perform something;

    "She knows how to knit"
    "Does your husband know how to cook?"

  3. be aware of the truth of something; have a belief or faith in something; regard as true beyond any doubt;

    "I know that I left the key on the table"
    "Galileo knew that the earth moves around the sun"

  4. be familiar or acquainted with a person or an object;

    "She doesn't know this composer"
    "Do you know my sister?"
    "We know this movie"
    "I know him under a different name"
    "This flower is known as a Peruvian Lily"

  5. have firsthand knowledge of states, situations, emotions, or sensations;

    "I know the feeling!"
    "have you ever known hunger?"
    "I have lived a kind of hell when I was a drug addict"
    "The holocaust survivors have lived a nightmare"
    "I lived through two divorces"

  6. accept (someone) to be what is claimed or accept his power and authority;

    "The Crown Prince was acknowledged as the true heir to the throne"
    "We do not recognize your gods"

  7. have fixed in the mind;

    "I know Latin"
    "This student knows her irregular verbs"
    "Do you know the poem well enough to recite it?"

  8. have sexual intercourse with;

    "This student sleeps with everyone in her dorm"
    "Adam knew Eve"
    "Were you ever intimate with this man?"

  9. know the nature or character of;

    "we all knew her as a big show-off"

  10. be able to distinguish, recognize as being different;

    "The child knows right from wrong"

  11. perceive as familiar;

    "I know this voice!"



用作动词 (v.)
  1. What do you know about us?
  2. I know what happened.
  3. Excuse me, do you know how to play chess?
  4. I've known Tom for years.
用作名词 (n.)
  1. Somebody in the know told me he's going to resign.
  2. A friend who is in the know says she already left the country.


用作动词 (v.)
用作不及物动词 S+~(+A)
  1. I honestly don't know.
  2. How could I know?
  3. Spring had come before I knew.
  4. Who knows, perhaps they don't wish to come.
  5. Don't you know?She has been laid up for the last four days.
  6. “The meeting has been put off.” “Yes,I know.”
    “会议延期了。”“ 我知道。”
  7. This, you know, is what I have in mind.
  8. There's no need to break the news gently,I've known for some weeks.
用作及物动词 S+~+ n./pron.
  1. She never got to know any of her neighbours though many years she stayed there.
  2. He knew all the surrounding fishing grounds like the palm of his hands.
    他对周围的渔场全都了如指掌 。
  3. He knows English and French.
  4. Who knows most says least.
  5. To know everything is to know nothing.
  6. He knew poverty and sorrow in his early days.
  7. They had never known modern medical care.
  8. “He teaches English at a nice school called The Chen Jinglun.”“I know it.”
  9. 用于be ~ed结构
  10. A friend is never known till needed.
S+~+wh-to- v
  1. We all don't know how to start the engine.
  2. Alf doesn't know how to appreciate favours.
  3. I really don't know which to choose, because they are both very nice.
  4. The truly free man is he who knows how to decline a dinner invitation without giving any excuse.
  5. You know where to get in touch with them, don't you?
  1. They know they are working for themselves.
  2. They knew they could never have what city folks had.
  3. You know that I am not a prejudiced man.
  4. He knows that this is quite true.
  1. Do you know where the conference is to be held?
  2. Do you know who was Napoleon?
  3. Do you know what I mean?
  4. God knows why they did it.
  5. I haven't been out anywhere since I don't know how long.
  6. I don't know whether you like flowers.
  7. She wants to know if she is right.
用作宾补动词 S+~+ n./pron. +(to be/as) n./adj. / prep. -phrase
  1. I know him to be an American.
  2. We know him to be honest.
  3. I've never known you so cheerful.
    我从来没看见你这样高兴 。
  4. They never knew him so excited before.
  5. They knew themselves to be in a difficult position.
  6. You may know this film as Never Give an Inch -its British title.
  7. 用于be ~ed结构
  8. The actress likes to be known as May Diamond, although it is not her real name.
  9. The African lion is known as the king of the forest.
  10. Mr. White is known in the town as a good family doctor.
S+~+ n./pron. +to- v
  1. We've never known him to do anything unjust.
  2. I never knew him to act without thinking.
  3. 用于be ~ed结构
  4. He was known to have taken part in the Long March.


用作动词 (v.)
be known to
  1. 为…所熟知 be well known by

    Mrs. Hall is well known to all the family, and I am certain that she will make a good servant in your house. 那家人都很了解霍尔太太的为人,我敢肯定,她在你家一定会成为一个听话的仆人。

    The actor is well known to us. 我们熟知这个演员。

    He is known to everyone in this university. 在这所大学里,人人都知道他。

    This should be made known to the whole country. 要让全国都知道这事。

    It is known to all that theory comes from practice. 理论来自实践,这是尽人皆知的。

  2. 名字被记录在案 have one's name recorded by officials

    Your new neighbour is known to the police, so you'd better lock your door. 你那位新邻居在警察局挂了号,你最好把门锁上。

know about (v.+prep.)
  1. 知道,了解 be aware of sb/sth know about sb/sth

    I happened to know about him.我正巧了解一些有关他的情况。

    We know about magnetism by the way magnets act.我们通过磁铁的作用知道磁性是怎么一回事。

    As for your hope of winning the first prize,I don't know about that.至于说到你在希望获头奖,对此我没有多大把握。

    know sth about sb/sth

    Do you know anything about astronomy?你懂天文学吗?

    He knows some damaging facts about the firm's dealings.他知道该公司在经营中的一些丑事。

    David certainly knows a thing or two about car engines.戴维肯定对汽车发动机非常在行。

    I'll let you know all about it later on.以后,我全让你知道此事。

know apart (v.+adv.)
  1. 能够区别 be able to recognize the difference between two or more things or people know sb/sth apart

    The two brothers are so much alike that even their own mother hardly knows them apart.这兄弟俩长得如此相像,甚至他们的母亲也很难识别。

know backwards (v.+adv.)
  1. 熟知; 精通 have learned very thoroughly know sth backwards

    Every actor ought to know his lines backwards before he goes on stage, as nervousness may make him forgetful.所有演员在上台前都应当把台词记得滚瓜烂熟,因为一紧张就容易忘词。

    You can't fool me; I know the whole story backwards.你骗不了我,这件事我了解得清清楚楚。

know best (v.+adv.)
  1. 最了解 have the best informed opinion; be the best judge of sb/sth know best

    No, you really ought to stay in bed, remember,Mother knows best!不,你真应当卧床静养。记住,母亲说得最有道理!

    know sb best

    Doctors should ask nurses their opinion, after all, they know the patients best.医生应当征求护士们的意见,毕竟护士最清楚病人的情况。

know better (v.+adv.)
  1. 更明白事理,没愚蠢到… be wise enough not to do it know better

    You ought to have known better!你怎么这么糊涂呢!

    He ran away from school.He ought to have known better.他从学校逃跑,他本来就应该知道那是不对的。

    know better than to-v

    She is old enough to know better than to spend all her money on clothes.她长大了,应该懂得不该把所有的钱都花在衣服上。

    I thought you knew better than to go to such places as that.我原以为你不至于糊涂到会上那些地方去。

    You ought to know better than to go swimming on such a cold day.你应该知道,这样冷的天是不该去游泳的。

    You ought to know better than to damage the state property.你应该知道损坏国家财产是不对的。

    He ought to know better than to come into the house without knocking at the door.他该懂得不敲门是不能进屋的。

    She certainly knows better than to tackle such problems by herself.她那么明智的人当然不至于自个儿去解决这类问题。

    They knew better than to come to my front door.他们挺聪明的,没有跑到前门去。

know by (v.+prep.)
  1. 根据…认出〔了解〕 recognize sb/sth because of sight or sign; tell sb know sb/sth by sth

    You will know the house by its tall chimneys.看到那些大烟囱你就会认出那所房子。

    I have never met our new neighbors; I simply know them by sight.我从未接触过我们的新邻居,只见过面。

    I know that poem by heart.我可以背诵那首诗。

    Shall I let you know by letter or by word of mouth?我写信告诉你还是口头通知你?

    Let me know it immediately by telephone.马上打电话通知我。

    用于 be ~ed 结构

    You must keep repeating the lines until they are known by heart.你必须反复朗读这几行,一直到能背诵为止。

know fine (v.+adv.)
  1. 很了解 know well know fine (that-)clause

    I know fine that he's not to be trusted.我很清楚他是不可信的。

    We know fine that's a good idea.我们很清楚那是个好主意。

know for (v.+prep.)
  1. 知道,认识,以…而出名 have information about sb or sth for a length of time know sth for sth 常用于be ~ed结构

    It is known for its handicraft products.这地方因出产手工艺品而闻名。

    The place is nationally known for its melons and fruit, especially its seedless grapes.这里的瓜果,尤其是无核葡萄驰名全国。

  2. 认识到(某人)是 recognize sb as being a certain kind of person know sb for sb

    I know you for a thief and a liar!我算认识你了,一个又偷又骗的家伙!

know from (v.+prep.)
  1. 辨别,分辨 be able to tell the difference between sb/sth know sb/sth from sb/sth

    You'd better first know a friend from an enemy.你得首先分清敌友。

    They're twins and it's almost impossible to know one from the other.他们是孪生子,旁人几乎无法辨别。

    He doesn't know a knife from a fork.他连刀叉也分不清。

    Don't listen to him, he doesn't know a hawk from a handsaw.别听他的,他什么也分不清。

    We must learn to know good from evil.我们要学习区分善恶。

    It's important for one to be able to know right from wrong.对一个人来说,能分辨是非非常重要。

know of (v.+prep.)
  1. 知道,听说 be aware of the existence of; hear of know of sb/sth

    I don't know the writer, but I know of him.我不认识这个作家,但我是晓得他的。

    Do you know of any oil-filling station around here?你知道这一带有加油站吗?

    What do you know of this theatre company?这个剧团的情况你知道些什么?

    “Has he gone to Shanghai?”“ Not that I know of.”“他到上海去了吗?”“据我所知他并没有去。”

    He would wish that he had never known of it.他但愿自己根本不晓得这件事。

    I know of a shop where you can buy things like that.我听说过有一家商店,在那里,你可以买到那些东西。

    I know of his books, but I haven't read any of them.我听说过他写的书,但一本也没有读过。

    用于 be ~ed 结构

    Such a kind of thing has never been known of before.这种事情以前闻所未闻。

know through (v.+adv.)
  1. 非常了解 understand sb/sth perfectly know sb/sth ⇔ through

    He thought he knew his wife through, until she deceived him.在妻子骗他之前,他一直认为自己非常了解她。

know one's job〔what one is doing〕
  1. 懂行,在行 be able to do sth; be well done

    He is a conscientious man and knows his job. 他很认真负责,也很懂行。

    The pupils handled the tools well, seemed to know what they were doing. 小学生们工具掌握得很好,看起来很会干。

    She knew what she was doing and soon put us to scales and exercises. 她很在行,立即让我们练习起音阶和练习曲来。


用作动词 (v.)
~+名词 ~+副词 ~+介词


  • I knew I had guessed right about those missing hours.

    出自:Scott Fitzgerald
  • The Fanners were known as good landlords.

    出自:J. Mortimer
  • The art of dressing is to know what you look good in.

    出自:Sunday Times



  1. know的基本意思是“知道”“认识”“听说”,指直接了解某事物,也可表示“领会,懂得”,指通过体验或传授而获得知识。
  2. know既可用作不及物动词,也可用作及物动词。用作及物动词作“知道,懂得”解时,可接表示事物的名词、代词、带疑问词的动词不定式、that或疑问词引导的从句作宾语,也可接以“(to be/as+) n./adj./prep. -phrase. ”或动词不定式充当补足语的复合宾语。作“认识,了解”解时,可接表示人或物的名词作宾语。know可用于被动结构。know接to be作宾语补足语时, to be常可省略,但当to be表示的时间先于know表示的时间时,须用不定式的完成式,且不可省略。
  3. 在对话回答语中,如know的宾语表示的是整个事实(如that-clause),则宾语可省略; 如know的宾语是一个具体事物,则通常以it代替之。
  4. know是表示思想状态的动词,指思维活动的结果,通常不用于进行体。
  5. 有些学者把know of和know about视为同义词。例如:I know about〔of〕 it long ago.(Palmer)我很久以前就听说过这件事了。
  6. 口语中表示“不知道”,可说I don't know。不过这听起来显得不温和、不友好,不如说I have no idea。
  7. know有时可用作名词, in the know表示“知情的,消息灵通的”。


know, know about, know of
这三者都有“知道,了解”的意思。它们的区别是:know 表示直接地知道,熟知;而know of 是间接得知(听人讲过,从书报上看过等); know about指知道关于某事的情况。例如:
I know of him, but I don't know him personally.我听说过他,但不认识他。
It is better to know one thing than to know about ten thousand things.熟知一事要比略知万事要好。
know by, know to
1.know to的意思是“为大家所了解”, know by的意思是“被大家所熟知”。现代英语中be known to较少使用。例如:
  • He's known to everybody here.
  • 这里的人都熟悉他。
  • He's known by everybody here.
  • 这里的人都了解他。
2.know by的主动形式往往用于表示认识人〔事物〕的手段或标准。例如:
We know a judge by the clothes he wears.我们可以根据他穿的衣服认出法官。
know, learn, understand
这组词都有“了解”的意思。它们的区别是:know指对某一事物的直接了解或通过体验、传授获得知识; learn意为“听说”“得知”,强调对某一具体事物从“不知”到“知”的变化; understand指对某事物的性质、规律、意义等都十分了解,而且还指了解它所包含的其他意义和关系,其程度要比know了解得更深、更广。例如:
How had he learned that secret?他怎么得知这个秘密的?
They were greatly surprised to learn the news.听到这个消息,他们都很吃惊。
Do you understand the difficulty of my position?你了解我处境的困难吗?
know, realize
realize指全面透彻地了解,语气比know强; know指知道、懂得、会做某事,不如realize了解得透彻、全面。例如:
So far as I know, he's abroad.据我所知,他在国外。
know, recognize
前者指“认出”,表瞬间动作; 后者指“认识”,表持续动作。
I don't know, I wonder
know learn comprehend understand
  • know:know普通用词,多指通过学习、经验或他人传播而得到知识,含直接知道的意味。
  • learn:learn通常指通过他人而获得消息或情况,侧重从不知到知的变化过程。
  • comprehend:comprehend侧重熟悉了解的过程。
  • understand:understand指对事物已有彻底的认识,不仅知其性质、含义和细节,而且了解其内外的关系。


  1. 他对物理学了解一点。

    He is knowing something about physics.

    He knows something about physics.


  2. 她知道怎样做蛋糕。

    She knows to make cakes.

    She knows making cakes.

    She knows how making cakes.

    She knows how to make cakes.



  • ☆ 直接源自古英语c的nawan,意为知道。



know : 知道,明白 ...
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  • know:know v. 知道, 了解, 认识, 熟悉, 认出, 分辨, 确信 英英解释:名词know:1. the fact of being aware of information that is kno…


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