did ... lose?, did ... forget?
뭐 잃어버렸나?
What did you lose?
— 나우 유 씨 미 3 (2025)
어서 어머니 께 말씀 드려 애가 극장에서 잃어버렸나 봐요 얼마 지?
Hurry and tell your mother. I think the child got lost at the theater. How much is it?
— 시네마 천국 (1988)
옛날 일을 잃어버렸나!
Have you lost track of the old days?
— 패왕별희 (1993)