이/가
subject particle
1級 · 助詞
解説
Marks the subject, especially new information or the answer to 'who/what'. Use 이 after a consonant and 가 after a vowel. 나/저/누구 + 가 become 내가/제가/누가.
例文
교실에 학생이 있어요.
There is a student in the classroom.
누가 왔어요? 친구가 왔어요.
Who came? My friend came.
날씨가 좋아요.
The weather is nice.
TOPIK対策メモ
TOPIK I Reading 34–39 often tests particle choice; contrast with 은/는.