do well to+동사 : ~하는게 좋다, ~하는 것이 당연하다 = had better+동사 = would rather+동사 = had sooner+동사 = may as well+동사 Ex). You would do well to say nothing about what happened. (무슨 일이 일어났는지 말하지 않는 편이 좋을 것이다.) He did well to be away. (그가 화를 내는 것은 당연했다.)