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BNC: 49 COCA: 47

know

Word family
know1 /nəʊ $ noʊ/ ●●● S1 W1 verb (past tensepst knew /njuː $ nuː/, past participlepp known /nəʊn $ noʊn/)   no
1 have information 知道信息 [intransitiveI, transitiveT]KNOW something to have information about something 知道,了解
 Who knows the answer?
谁知道答案?
 There are instructions telling you everything you need to know.
操作指南会告诉你所有须知事项。
 Didn’t you know that?
你不知道那件事吗?
know what/how/where etc
 Do you know what time it is?
你知道现在几点吗?
 I don’t know where to go.
我不知道去哪里。
know (something/nothing etc) about something
 I need to know more about the job before I decide whether to apply for it.
我要对这份工作多加了解再决定是否申请。
 Little is known about the author’s childhood.
这位作者的童年几乎不为人知。
 I know all about David and what he’s been up to!
我对戴维和他一直在干什么都知道得一清二楚!
know (something/nothing etc) of something
 I wonder if he knew of the plan?
我在想他是不是知道这个计划?
 Do you know of any good restaurants in the area?
你知道这地方有什么好餐馆吗?
 You know nothing of this business.
你对这个行业一无所知。
know (that)
 We know that greenhouse gases can affect the climate.
我们知道温室气体会对气候产生影响。
 Let me know (=tell me) what time you’re planning to arrive.
请告诉我你打算什么时候到。
 I thought you’d want to know immediately.
我以为你想马上知道。
 If you must know, I was with James last night (=used when you are angry because someone wants to know something).
如果你非要知道的话,我昨晚是和詹姆斯在一起。
without somebody/sb’s knowing
 He slipped out of the house without his parents knowing (=secretly).
他瞒着父母,偷偷溜出了家。
 How did he know (=how did he find information about) our names?
他是怎么知道我们姓名的?
as you/we know
 ‘I’m divorced, as you know, ’ she said briefly.
我离婚了,你知道的。她简短地说道。
be known to do something
 Smoking is known to increase a person’s risk of developing lung cancer.
人们知道,吸烟会增加罹患肺癌的风险。
nGrammar
In more formal English, you say it is known that or it is known who/why/what etc:
It is known that the drug causes infertility.
It is not known how many people were killed.
2 be sure 肯定 [intransitiveI, transitiveT]SURE to be sure about something 肯定,确定
3 be familiar with SB/STH 熟悉某人/某物 [transitiveT]KNOW somebodyKNOW something to be familiar with a person, place etc 熟悉,了解
4 realize 意识到 [intransitiveI, transitiveT]REALIZE to realize, find out about, or understand something 认识到,明白,懂得
5 skill/experience 技巧/经验 [transitiveT]EXPERIENCE to have learned a lot about something or be skilful and experienced at doing something 精通,熟悉,懂得
6 know SB’s qualities 了解某人的品质 [transitiveT] to think that someone has particular qualities 认为,知道〔某人具备某种品质〕
7 know better 
Examples from the Corpus
8 not know any better used to say that someone does something bad or stupid because they have not been told or taught that it is wrong 不明真相,不明就里〔因而做了坏事或傻事〕
Examples from the Corpus
9 know something inside out  (also know something backwards British English, know something backwards and forwards American English) to be very familiar with something, especially because you have learned about it or because you have a lot of experience 对某事了如指掌,对某事十分了解
Examples from the Corpus
10 know your way around something 
Examples from the Corpus
11 make yourself known (to somebody) formal to introduce yourself to someone (对某人)作自我介绍
Examples from the Corpus
12 recognize 辨认出 [transitiveT]RECOGNIZE to be able to recognize someone or something 认出,认识,辨认出
13 know somebody/something as something to have a particular name 把某人/某物称为
Examples from the Corpus
14 know something from something UNDERSTANDto understand the difference between one thing and another 分辨事物,知道事物间的差异
Examples from the Corpus
15 experience 经验 [transitiveT]EXPERIENCE to have experience of a particular feeling or situation 经历,体验,知道
16 somebody/something is not known to be something  or somebody/something has never been known to do somethingNOT DO something used to say there is no information that someone or something has particular qualities 据说某人/某事物不是某种情况/不会做某事
Examples from the Corpus
17 I’ve known somebody/something to do something  or somebody/something has been known to do somethingSOMETIMES used to say that someone does something sometimes or that something happens sometimes, even if it is unusual 我知道某人做过某事/发生了某种情况〔尽管并不常见〕
SPOKEN PHRASES
40 there’s no knowing NOT KNOWit is impossible to know 无从知道,难以预料
Examples from the Corpus
41 let it be known/make it known (that) formal to make sure that people know something, especially by getting someone else to tell them 使人知道(…),让人知晓(…)〔尤指通过别人传达〕
42 not want to know British EnglishBrE informalREFUSE to not be interested in someone and what they want to say 不想知道,不感兴趣
Examples from the Corpus
43 know the score informal to understand a situation and all the good and bad features about it 知道实情,了解真相
Examples from the Corpus
44 not know what hit you informal to feel shocked and confused because something happens when you are not expecting it to 目瞪口呆,大为惊讶
45 know your place used to say that someone understands that they are less important than other people – usually used humorously 有自知之明,知道自己位置何在〔一般为幽默用法〕
Examples from the Corpus
46 know no bounds formal if a feeling or quality knows no bounds, it is not limited in any way 无止境,无穷无尽
Examples from the Corpus
47 somebody knows best KNOW somethingused to say that someone should be obeyed or that their way of doing things should be accepted because they are experienced 某人最懂,某人最了解
48 before you know it used to say that something happens very quickly and when you are not expecting it 转眼之间,一下子
Examples from the Corpus
49 know different/otherwise informal to know that the opposite of something is true 知道并非如此
Examples from the Corpus
50. know your own mind INDEPENDENT PERSONto be confident and have firm ideas about what you want and like 有自信,有自己的主见
Examples from the Corpus
51 you will be delighted/pleased etc to know (that) formalHAPPY used before you give someone information that they will be pleased to hear 你要是知道(…)准会高兴的
52 it’s ... , Jim, but not as we know itJim, but not as we know it it’s ...  informal humorous used to say that something is completely different from what we would normally expect something of its type to be 那算是,但不是我们所熟悉的那种
the next thing I/she etc knew at next1(6)
nGRAMMAR: Using the progressive
Know is not used in the progressive. You say:
I know who that is.
Do you know this song?
Don’t say: I’m knowing who that is. | Are you knowing this song?
However, the participle knowing is sometimes used:
Knowing she would appreciate it, I offered to help.
Examples from the Corpus
know2 noun  
in the know informalKNOW something having more information about something than most people 知情的,熟知内情的
 People in the know say that interest rates will have to rise again soon.
知情人士说,利率将很快再次上升。
Origin know1
Old English cnawan
BNC: 49 COCA: 47
know

verb¹

1have information about sth知道ADVERB | VERB + KNOW | PREPOSITION | PHRASES ADVERBfull well, perfectly well, very well完全知道;徹底瞭解You know very well what I'm talking about!你非常清楚我在說什麼!for certain, for sure確實知道I don't know for certain, but I think she lives in the next town.我不太確定,但我覺得她就住在鄰鎮。just就知道I just knew there would be problems.我就知道會有問題。honestly not確實不知道I honestly don't know what they mean to do.我確實不知道他們要幹什麼。beforehand提前知道If I'd known beforehand how bad it would be, I wouldn't have gone.如果早知道會這麼糟糕,我就不會去了。VERB + KNOWlet sb告訴某人Please let me know (= tell me) if there's anything I can do to help.如果有什麼我能幫忙的,請儘管告訴我。PREPOSITIONabout瞭解⋯He knows a lot about music.他很懂音樂。of知道有⋯I don't know of anyone who might be interested in the job.我不知道有誰會對這份工作感興趣。PHRASESbe widely known眾所周知It is widely known that CFCs can damage the ozone layer.眾所周知,氯氟烴能破壞臭氧層。know a lot, nothing, very little, etc.知道很多、 什麼也不知道、知道很少等you never know永遠不會知道Be prepared for rain-you never know what the weather will be like.做好下雨的準備 - 天氣會怎麼樣很難預料。
know

verb²

2realize意識到ADVERB | PHRASES ADVERBexactly, precisely準確/精確瞭解I know exactly how you feel.我完全瞭解你的感受。immediately, instantly立即/馬上意識到I instantly knew what the call was about.我當即就意識到這個電話的來意了。instinctively本能地知道He knew instinctively where he would find her.他本能地知道在哪兒能找到她。PHRASESthe next thing I, he, etc. knew接下來我、他等所知道的The next thing I knew, I was waking up in hospital.等到我醒來的時候就在醫院了。
know

verb³

3be familiar with sb/sth熟悉ADVERB | VERB + KNOW | PREPOSITION | PHRASES ADVERBwell非常熟悉I don't know John very well.我不太瞭解約翰。poorly瞭解很少The properties of this substance are poorly known.這種物質的特性人們知之甚少。barely, hardly勉強認識;幾乎不瞭解But I hardly know the woman!可是我幾乎不認識那個女人!personally親自打交道I don't know them personally.我沒和他們打過交道。internationally, nationally國際上/全國聞名VERB + KNOWget to開始瞭解She's very nice when you get to know her.你瞭解她後就會覺得她人非常好。PREPOSITIONfor因為⋯熟悉He is internationally known for his work with vaccines.他以其疫苗研究聞名國際。PHRASESbe known to sb為某人所熟悉This man is known to the police (= as a criminal).這個人是在警方掛了號的。be widely known廣為人知
know

verb⁴

4be known as have a particular name名叫;叫作ADVERB | PREPOSITION ADVERBcommonly, popularly一般稱為;普遍稱作affectionately深情地稱為collectively統稱為parts of the body known collectively as the sensory system統稱為感覺系統的身體部位variously有五花八門的名稱The drug is variously known as crack or freebase.這種毒品的叫法五花八門,有人稱為“快克”,也有人叫它“游離鹼”。locally當地稱為formerly, previously以前稱作Iran was formerly known as Persia.伊朗以前叫波斯。PREPOSITIONto被⋯稱為He was known as Bonzo to his friends.他的朋友稱他為邦佐。
BNC: 49 COCA: 47
know verb
know1 (If only we'd known…) know2 (I know it's here somewhere!) feel (know what it is like to be poor) learn (know how to use spreadsheets) know sth by heart, know sth off/down pat learn get to know sb meet3
know1

verb

If only we'd known... 我们要是早知道⋯就好了I know it's here somewhere! 我肯定它就在这附近!feelknow what it is like to be poorlearnknow how to use spreadsheetsknow sth by heartknow sth off/down patmeet3get to know sbknow ♦︎ realize ♦︎ appreciateThese words all mean to understand or be aware of sth. 这些词均表示理解或意识到某事。PATTERNS AND COLLOCATIONS 句型和搭配without knowing / realizing / appreciating sthto know / realize / appreciate that...to know / realize / appreciate what / how / why...to know / realize where...to begin / come to know / realize / appreciate sthhope sb knows / realizes / appreciates sthshould have known / realized / appreciated sth know (knew, known) [transitive] (not used in the progressive tenses 不用于进行时) to understand or be aware of a particular fact or situation 明白;懂得;意识到He knew he was dying.他意识到自己快死了。I know exactly how you feel.我非常清楚你的感受。You know perfectly well what she meant.你完全明白她的意思。 (spoken) 'He's feeling really down.' 'I know.'“他的情绪相当低落。”“我能理解。”If only we'd known you were having so many problems!我们要是早知道你当时面临着这么多困难就好了!This case is hopeless and he knows it (= although he will not admit it).这个案子毫无希望,这一点他是清楚的。 see also knowledge awareness realize (BrE also realise) [transitive] (not used in the progressive tenses 不用于进行时) to understand or become aware of a particular fact or situation 理解;认识到;意识到I didn't realize (that) you were so unhappy.我没察觉到你那么不开心。I don't think you realize how important this is to her.我想你并不晓得这对她有多重要。She soon realized her mistake.她很快便意识到了自己的错误。We make assumptions all the time without realizing it.我们总是在无意中就进行了假设。They managed to leave without any of us realizing.他们悄悄地走了,我们谁也没注意到。 see also realization awareness NOTE 辨析 Know or realize?In this meaning know is not usually used with a noun object. * know表达此义时通常不接名词作宾语She soon knew her mistake. To realize sth can mean to become aware of it, as well as to be aware of it; know can mean 'become aware' if it happens in a single moment. * realize不仅表示懂得某事,还表示逐渐认识到某事;know可表示在瞬间便意识到所发生的事情As soon as / The moment I walked in the room I knew / realized something was wrong.我一走进那个房间便意识到出事了。Suddenly / All of a sudden / At once I knew / realized what he meant.我忽然/一下子明白了他的意思。However, if the process of becoming aware takes any time, even a short time, use realize. 但是,如果这个意识的过程需要一些时间,哪怕是很短的时间,就应使用realizeI soon / quickly / gradually / slowly realized what he meant.我很快/一下子/逐渐/慢慢地明白了他的意思。I soon/quickly/gradually/slowly knew what he meant. appreciate əˈpriːʃieɪt [transitive] (not used in the progressive tenses 不用于进行时) (rather formal) to understand or realize that sth is true, especially that a situation is difficult for sb else 理解,明白,懂得(尤指他人的难处)You have to appreciate the difficulties we are facing.你一定要明白我们正面临着诸多困难。I don't think you appreciate how expensive it will be.我想你并不了解它会有多昂贵。As you'll appreciate, the task has not always been easy.你将会明白,这个任务并非总那么简单。 see also appreciation understanding know2

verb

If only we'd known... 我们要是早知道⋯就好了I know it's here somewhere! 我肯定它就在这附近!feelknow what it is like to be poorlearnknow how to use spreadsheetsknow sth by heartknow sth off/down patmeet3get to know sbknow ♦︎ bet ♦︎ guaranteeThese words all mean to say that you are certain about sth. 这些词均表示确信、肯定。PATTERNS AND COLLOCATIONS 句型和搭配to know / bet / guarantee that...you can bet / guarantee (that...) know (knew, known) [transitive, intransitive] to feel certain about sth 确信;确定;肯定I know it's here somewhere!我肯定它就在这附近!I just knew that it was something I wanted to do.我只知道这就是我想做的事情。 (spoken) 'You were right-someone's been spreading rumours about you.' 'I knew it!'“你说得对,有人一直在散布你的谣言。”“我就知道!”'She's the worst player in the team.' 'Oh, I don't know (= I am not sure that I agree) -she played well yesterday.'“她是队里打得最差的。”“哦,是吗?她昨天表现得挺不错呀。” bet (betting, bet, bet) [transitive] (rather informal, spoken) used to say that you are almost certain that sth is true or that sth will happen 敢说;八成儿I bet we're too late.我们八成儿是太晚了。You can bet that the moment I sit down, the phone will ring.几乎可以肯定,我一坐下电话铃就会响起来。 guarantee ˌgærənˈtiː [transitive] to be certain that sth will happen 肯定会;必然会The film is virtually guaranteed to do well at the box office.这部影片几乎可以肯定会大收旺场。
BNC: 49 COCA: 47
know
To understand something: understand, know, work out...
To remember: remember, recall, think back...
To experience something: experience, undergo, encounter...
To notice or recognize something or someone: notice, recognize, observe...
Knowing and knowing about something: knowing, knowledgeable, informed...

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