할 건지

whether to do

→ 하다
phrase Rare #13,775
whether to do Used in the pattern -(으)ㄴ/는 건지 to ask or wonder what, how, or whether someone did or will do something. 할 건지 specifically refers to what someone will do or whether they will do it.
KO: 이번 주말에 뭘 할 건지 정했어?
EN: Have you decided what you’re going to do this weekend?

어떻게 할 건지 말해줄게

I'll tell you what I'm going to do.

— 데드풀과 울버린 (2024)

제가 뭘 할 건지 말씀드리죠

Let me tell you what I'm going to do.

— 데드맨스 와이어 (2026)