Wow!
哇！
What happened to you?
你怎么了？
What's wrong with you?
你怎么了？
What's the matter with you?
你怎么了？
You look sad.
你看起来很伤心的样子。
That's unbelievable!
真令人不敢相信！
I can't believe it!
我真不敢相信！
That's incredible!
真令人不敢相信！
Why did this happen?
为什么会发生这样的事情？
I don't understand it myself.
我自己也不懂。