"knew"是"know"的過去式和過去分詞，表示過去知道某事或某人。以下是一些使用"knew"的例句：
Did you know him? 你認識他嗎？
I knew you were my brother last year. 去年我知道你是我的兄弟。
From the reports of guns we knew that hunters must be nearby. 聽槍聲我們知道獵人必定在附近。
At last he knew the meaning of life. 終於,他知道了生命的意義。
The whole school knew every detail of this made escapade. 全校對這場瘋狂的惡作劇的全部細節知道得一清二楚。
From the very beginning I knew that he was not much of anything. 一開始我便知道他什麼也不行。
The two of them have been close friends ever since they knew each other. 他們自相識以來一直是好朋友。