请问know和known有什么区别``

1，known是 know的过去分词形式，过去式是knew。过去分词常用在完成时态中，如
I have known him for a long time.我认识他已很久了。
2.另外known也已经变成了一个形容词，意思是“有名的，著名的”。
He is a well-known writer.他是个知名作家。

recognize, realize和know的区别：recognize=know again; make out“认出；分辨出”；realize=come to know“意识到”；know“认识”
recognize

vt.

认识; 认出; 辨认

承认, 认可

招呼

认清, 认识到

公认; 赏识; 感激; 赞扬; 表扬; [美]承认...发言权; 准许...发言
recognize an old acquaintance
认出一位老相识
recognize this new government
承认这个新政府
recognize sb. in the street
在街上与某人打招呼
refuse to recognize sb. any longer
不再理睬某人
recognize one's duty
认清自己的职责

know

vt.
(knew [nju:], known [nEun])

知道; 熟悉; 了解; 懂得

认识; 相识

精通; 记牢

认出; 分辨出

体验, 经历

(基督教《圣经》或法律用语)同(某人)发生性关系
know the facts
知道[了解]事实
know English
懂英语
know truth through practice