A : How come didn't you come to the party?
     - 파티에 오지 않다니 어떻게 된 일이야?

B : I completely forgot about it.
     - 파티를 완전히 깜빡했지 뭐야.

A : You should have come. It was exciting.
     - 너도 왔어야 했는데. 너무 재미있었거든.