Breakdown of uija saie yeonpiri tteoreojyeo isseoyo.
~이~i
subject particle
있다issda
to be
~에~e
location particle
의자uija
chair
연필yeonpil
pencil
사이sai
space
떨어지다tteoreojida
to fall
Elon.io is an online learning platform
We have an entire course teaching Korean grammar and vocabulary.