Usages of je
제 방 안에 가방이 있어요.je bang ane gabangi isseoyo.
There is a bag in my room.
제 컴퓨터 화면이 커요.je keompyuteo hwamyeoni keoyo.
My computer screen is big.
Elon.io is an online learning platform
We have an entire course teaching Korean grammar and vocabulary.