목적 : ~ 위해, in order to ~ , so as to ~
I went to Paris to study art.
결과 : ~ 해서 ~하다
She grew up to be star.
원인 : 감정 형용사 (happy, glad, sad, sorry, pleased, surprised, excited) + to V
I am happy to help you.
이유 : ~하다니
You are smart to solve this program
조건 : ~ 한다면, would와 함께 있을 때
He would be happy to win the game.
양보 : ~ 하더라도, would와 함께 사용되고 내용의 맥락이 상반될 때
You would not believe me to explain it.
This book is easy to read.