Object Particle: 를 (leul), 을 (eul)
If object has bottom consonant, 을 (eul) comes after object.
If object has no bottom consonant, 를 (leul) comes after object.
Example
I met a friend. – 나는 친구를 만났습니다.
(na neun chin goo leul man nat seum ni da)
I ate dinner with my friend. – 나는 친구와 저녁을 먹었습니다.
(na neun chin goo wa ju nyuk eul muk ut seum ni da)
Possessive Particle: 의 (eui)
Possesive Particle is like My, Your, Our, ‘s etc.
Example
My friend came to America. – 나의 친구가 미국에 왔습니다.
(na eui chin goo ga mi gook eh wat seum ni da)
My Brother’s bag is red. – 나의 동생의 가방은 빨간색입니다.
(na eui dong saeng eui ga bang eun bbal gan saek im ni da)
Side by Side Particle : 와 (wa), 과 (gwa)
와(wa) comes if the word in front of it has no bottom consonant.
과(gwa) comes it the word in front on it has bottom consonant.
Example
Steve and I go to same school. – 스티브와 나는 같은 학교에 다닙니다
(Steve wa na neun ga teun hak gyo eh da nim ni da)
I went to baseball park with my friends.- 나는 친구들과 야구장에 갔습니다.
(na neun chin goo deul gwa ya goo jang eh gat seum ni da)