
잘 (하다) can sometimes mean often, frequently
그는 결석을 잘한다 = He is often absent.
오랜만에 예전에 잘 가던 식당에 가 봤더니 많이 변해 있었다 = I went to a restaurant that I used to use frequently a long time ago, and it had changed a lot.
그 출판사는 보통 쉼표를 잘 안쓴다 = The publishing company usually uses very few commas.
집에 아이팟 있는데 잘 안써 = I have an iPod at home, but don’t use it so much.
걘 뚱딴지같은 질문을 잘해 = She often asks off-the-wall questions.


