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English definition of “know”

know

verb (BE FAMILIAR WITH)    /nəʊ/ US  /noʊ/ (knew, known)
B1 [T not continuous] to be familiar with or have experience and understanding of: I've known Daniel since we were at school together. She grew up in Paris so she knows it well. I've seen the film "Casablanca" so many times that I know a lot of it by heart (= I know it in my memory ). Knowing Sarah (= from my experience of her in the past), she'll have done a good job .formal I have known (= experienced ) great happiness in my life .Knowing and learning B1 [I or T, not continuous] (also know about) If you know a subject , you are familiar with it and understand it: Do you know about computers ? She knows her subject inside out (UK also backwards ) (= very well).Knowing and learning A2 [T not continuous] If you know a language , you can speak and understand it: Do you know any French ?Knowing and learning [T not continuous] to recognize someone or something: That's Peter alright - I'd know him anywhere ! I know a bargain when I see one.Knowing and learning know how to do sth A2 to be able to do something because you have the necessary knowledge : Do you know how to print on this computer ?Skill, talent and ability get to know sb/sth B1 to spend time with someone or something so that you gradually learn more about him, her, or it: The first couple of meetings are for the doctor and patient to get to know each other. I'll need a few weeks to get to know the system .Being, becoming friends and getting to know someone know sb by name to have heard the name of a person but not seen or talked to themKnowing and learning know sb by sight If you know someone by sight , that person looks familiar to you, but is not a friend of yours.Being, becoming friends and getting to know someone Grammar:KnowWe commonly use the verb know with a noun phrase, with a that-clause or with a wh-clause (e.g. who, where, why):Grammar:Know how + infinitiveWe do not commonly use know + to-infinitive. We use know how + to-infinitive:Grammar:Know + object + infinitiveIn very formal English, we use know + object + to-infinitive:Grammar:Know without an objectTo refer to general knowledge, we use know without an object:Grammar:You knowWe use you know very often in speaking as a discourse marker. We use it to check that the people we are speaking to share the same knowledge as us and understand what we are saying:
(Definition of know verb (BE FAMILIAR WITH) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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