Usages of hana
나는 친구에게 책을 한 권 줘.naneun chinguege chaegeul han gwon jwo.
I give a book to a friend.
과일 하나를 먹어요.gwail hanareul meogeoyo.
I eat one fruit.
에릭이 책을 한 권 읽어요.erigi chaegeul han gwon ilgeoyo.
Erik reads one book.
Elon.io is an online learning platform
We have an entire course teaching Korean grammar and vocabulary.