A:I made a fortune.

A:我发大财了。

B:Wow! How did you make the fortune?

B:哇，你是如何发财的?

A:I have just won a car!

A:我刚才中奖得了一辆汽车。

B:Congratulations!

B:恭喜!

A:It's too good to be true, thanks.

A:谢谢，真叫人难以置信。

B:How lucky you are!

B:你太幸运了!