及物动词

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1. 知道；知悉；了解
If you know a fact, a piece of information, or an answer, you have it correctly in your mind.

2. 熟识；认识
If you know someone, you are familiar with them because you have met them and talked to them before.

3. 听说过；略有耳闻
If you say that you know of something, you mean that you have heard about it but you do not necessarily have a lot of information about it.

4. 了解，掌握（某一学科）
If you know about a subject, you have studied it or taken an interest in it, and understand part or all of it.

5. 学会，掌握（语言）
If you know a language, you have learned it and can understand it.

6. 熟悉；了解
If you know something such as a place, a work of art, or an idea, you have visited it, seen it, read it, or heard about it, and so you are familiar with it.

7. 会；能
If you know how to do something, you have the necessary skills and knowledge to do it.

8. 意识到；觉察到
You can say that someone knows that something is happening when they become aware of it.

9. 认出；辨认出
If you know something or someone, you recognize them when you see them or hear them.

10. 称为；叫做
If someone or something is known as a particular name, they are called by that name.

11. 认为…是；把…看作是
If you know someone or something as a person or thing that has particular qualities, you consider that they have those qualities.

12. （因某工作或角色）认识
If you know someone as a person with a particular job or role, you are familiar with them in that job or role, rather than in any other.

13. see also: knowing;known

14. 现行的；我们熟悉的；我们熟知的
If you talk about a thing or system as we know it, you are referring to the form in which it exists now and which is familiar to most people.

15. （花时间）了解
If you get to know someone, you find out what they are like by spending time with them.

16. 谁知道；天晓得
People use expressions such as goodness knows ,Heaven knows, and God knows when they do not know something and want to suggest that nobody could possibly know it.

17. （表示同意）我理解，我有同感，我知道
You say 'I know' to show that you agree with what has just been said.

18. （表示接受）我知道
You say 'I know' to show that you accept that something is true, but think that it is not very important or relevant.

19. （表示同情和理解）我理解，我知道
You use 'I know' to express sympathy and understanding towards someone.

20. 不知道，不认为（表示不完全同意或不认为是真的）
You can use I don't know to indicate that you do not completely agree with something or do not really think that it is true.

21. 我不知道你（们）怎么想（表示将表达自己想法并想知道他人的看法）
You can say 'I don't know about you' to indicate that you are going to give your own opinion about something and you want to find out if someone else feels the same.

22. （表示批评某人的行为）真想不到，真不知道
You use I don't know in expressions which indicate criticism of someone's behaviour. For example, if you say that you do not know how someone can do something, you mean that you cannot understand or accept them doing it.

23. 我要是知道就好了；我根本不知道
People sometimes use expressions such as I'm blessed if I know or damned if I know to emphasize the fact that they do not know something.

24. 知情；（尤指）熟悉内幕，掌握内情
If you are in the know about something, especially something that is not known about or understood by many people, you have information about it.

25. （表示所说的话对方理解）你是知道的，你知道我的意思
You can use expressions such as you know what I mean and if you know what I mean to suggest that the person listening to you understands what you are trying to say, and so you do not have to explain any more.

26. （指可能会发生好事）很难说，很难预料
You say 'You never know' or 'One never knows' to indicate that it is not definite or certain what will happen in the future, and to suggest that there is some hope that things will turn out well.

27. 据我所知没有
You say 'Not that I know of' when someone has asked you whether or not something is true and you think the answer is 'no' but you cannot be sure because you do not know all the facts.

28. 我怎么知道；我不知道
You can say 'How was I to know?', or in British English 'I wasn't to know', to mean that you cannot be blamed or criticized for something you did, because you did not have enough information to realize that it was wrong.

29. （某人）知道什么，懂什么（表示其没有资格评论）
You can use expressions such as What does she know? and What do they know? when you think that someone has no right to comment on a situation because they do not understand it.

30. （表示惊讶）你看怪不怪，真没想到
People sometimes say 'What do you know!' when they are very surprised about something.

31. （加强语气或引起注意）你要知道
You use you know to emphasize or to draw attention to what you are saying.

32. （表示不确定要说的话或考虑接着说什么）你知道
People use you know when they are uncertain about what they are saying or what they are going to say next.

33. （表示进一步解释）你是知道的，你难道不知道
You use you know when you are trying to explain more clearly what you mean, by referring to something that the person you are talking to knows about.

34. （加强语气）你不知道，你都想不到
You can say 'You don't know' in order to emphasize how strongly you feel about the remark you are going to make.

35. to know something backwards - see backwards
to know best - see best
to know better - see better
to know no bounds - see bound
to know what side your bread is buttered on - see butter
to know something for a fact - see fact
as far as I know - see far
not to know the first thing about something - see first
to know full well - see full
to let someone know - see let
not to know the meaning of the word - see meaning
to know your own mind - see mind
for reasons best known to oneself - see reason
to know the ropes - see rope

1. the fact of being aware of information that is known to few people

e.g. he is always in the know