so far : 지금까지 ~하다 until : ~까진 ~했지만 (이젠 아닌) A: How are you doing in your new workplace? 새로운 직장은 어때? B1: Everything is good so far. 아직까지 다 괜찮아 B2: Everything was good until yesterday. 어제까지는 괜찮았어(이젠 아님) A: Let me know if you have any problems. 문제가 있으면 알려줘. B1: I don't see any problems so far. 아직까지는 문제가 없어. B2: I didn't see any problems until now. 방금 문제가 생겼어.