1. Lucky you! 你真幸运! Lucky me! 我真是幸运!

　　2. It was just dumb luck. 只是狗屎运罢了。

　　3. It's your lucky day. 你真走运。

　　4. You got lucky. 你运气真好。

　　5. Today's my lucky day. 今儿我运气好。I feel lucky today. 我感觉今天运气很好。