Usages of jamgeuda
나갈 때 현관 문 꼭 잠가.nagal ttae hyeongwan mun kkok jamga.
Lock the front door when you go out.
방금 문 잠갔어.banggeum mun jamgasseo.
I just locked the door.
Elon.io is an online learning platform
We have an entire course teaching Korean grammar and vocabulary.