Subject: Know yourself out.

　　第一、迷你对话

　　A: You are welcome. Knock yourself out.

　　不用谢，祝你生活愉快。

　　B: The same to you.

　　你也一样啊。

　　第二、地道表达

　　knock oneself out

　　1. 解词释义

　　Knock oneself out用途广泛，它还有3种意思。如果你去美国朋友家中做客或者参加他们举行的宴会，当他们说knock oneself out时，意思是叫某人尽情地玩。例如：Let’s knock ourselves out drinking anddancing!(喝酒跳舞，让咱们尽情享受吧!)第二个意思是劝告某人没有必要去理会某件事情。Knowyourself out.(你不要去理睬。)第三个意思是做最大努力，尽最大努力。例如：They like knockingthemselves out for that.(他们愿意为此尽鼓大努力。)

　　2. 拓展范例

　　A: I want to finish my homework tonight.

　　我想在今晚完成我的家庭作业。

　　B: Come on, it is the weekend and we have two more days to get them done. Let us knockourselves out, drinking and dancing in a club.

　　算了吧，现在是周末，还有2天时间做作业。我们到一家俱乐部去尽情享先乐吧。