-았/었더니

창문을 열었더니 시원한 바람이 들어왔어요.

I opened the window and a cool breeze came in.

푹 잤더니 몸이 가벼워요.

I slept well, so I feel refreshed.

친구에게 전화했더니 벌써 출발했다고 했어요.

I called my friend and he said he'd already left.