I think the easiest way to understand how to use it is using examples. 아직 vs 벌써 지금은 오전 1시이지만 내가 아직 안 잤어요. -> It's 1AM and I'm still not asleep. 지금은 오후 6시이지만 성희 씨가 벌써 잠을 잤어요. -> it's (only) 6pm but Seonghee is asleep already. I remember my teacher explained to the class 아직 is used when the event is later than expectation and 벌써 when the event is earlier than expectation. The thing that I found we need to be careful about is when the word is used by itself and how we interpret it. e.g. 가: 일 끝났어요? 나: 아직요. the full answer is actually: 아직 안 끝났어요. but sometimes people just use a short version answer 아직요 which can be translated as "not yet" I hope it helps you understand.

아직 = pas encore par exemple, " Thierry, tu as fait tes devoirs? " - 티에리, 너 숙제는 했니? " Non, maman pas encore. je vais les faire apres le diner." - 아니오, 엄마 아직이요. 저녁식사 후에 숙제 할 거예요. :-)

Not yet.