This is the 11322nd most frequent Korean word.
김성준이
"김성준이" is a Korean name, typically referring to a person named Kim Sung-jun.
Here, '김성준이' is used as the subject of the sentence, denoting a proper noun referring to a person's name.
김성준이는 축구를 잘합니다.
Kim Sung-joon is good at soccer.
In this sentence, '김성준이' is utilized as a complement of the predicate, connecting the subject to its description.
내 친구 중 한 명이 김성준이야.
One of my friends is Kim Sung-joon.
Here, '김성준이' is used as a topic phrase introduced by '로 말할 것 같으면,' emphasizing discussions around him.