quit 就是停止，认输。说白了就是不干了。

网球大将爱格斯结束了他二十一年的网球生涯，有人问他:"为什么不早点退休?"他回答说，"If I wanna quit, I would have done it a long time ago. I didn't come here to quit.” “要是我想不干，我早就会那么做了，我不是来认输的。”

Bill Gates 中途退学，后来成了一个成功的商人：Bill Gates quits school, and became a successful businessman.

我以前的老板老是挑我的毛病：My former boss always picked on me. 有一天，我实在忍无可忍，我对他说：“I quit. I've had enough.” “我不干了，我受够了”

奥，对不起，我该下班了：Sorry, it's time for me to quit。