know的过去式是knew;过去分词是known。know的英式读法是[nəʊ];美试读法是[noʊ]。作动词意思是了解;知道;认识。作名词意思是知情。相关例句:用作动词 (v.)1、What do you know about us?你对我们有什么了解?2、I didn't know the truth until she told me what happened.直到她告诉我发生的事,我才了解真相。用作名词 (n.)1、Somebody in the know told me he's going to resign.有知情者告诉我他要辞职了。2、A friend who is in the know says she already left the country.一位知情的朋友说,她已经离开这个国家了。