Learn to say what must happen first for something else to be possible, using -어야 and -어야지.
You can use -어야 and -어야지 in the correct form to say one thing is needed before another, and choose the form that fits a notice or a conversation.
다운로드는 로그인한 학습자에게 제공됩니다. 가입은 1분이면 되고 무료입니다.