当然

　　you bet.

　　you know it.

　　you betcha.

　　你在开玩笑

　　you are kidding(joking).

　　you have got to be kidding(joking).

　　Are you kidding(joking).

　　没错，就是这样

　　you got that right.

　　you wit the rail on the head.

　　世界真小

　　It is a small world!

　　Small world!

　　You never know whom you will bump into!

　　既然如此，你自己来吧

　　Do it yourself, then.

　　这才像话

　　That is more like it.

　　太过分了

　　That is going too far.

　　我老早就告诉过你了

　　See I told you(so).

　　那又怎样？

　　So what?

　　就指望你了