She's an astronaut? Well, what do you know!她是航天员？啊，真想不到呀！

“He's going to law school in the fall.” “Well what do you know about that?” [=I am surprised that he is going to law school]“今年秋天他要上法学院了。”“啊，真想不到！”

“She thinks I should take the job.” “What does she know? You should do what you want.”“她认为我该接受那份工作。”“她知道什么？你该做你想做的事情。”