혼자

In a sentence

• 나는 혼자 영화를 봤다.

  I watched a movie alone.

  In this sentence, '혼자' modifies the verb phrase and describes the subject performing the action without company.

• 혼자 있는 것을 좋아해요.

  I like being alone.

  Here, '혼자' functions as a noun-like element indicating a state of being solitary.

• 그는 혼자서 문제를 해결했습니다.

  He solved the problem by himself.

  In this case, '혼자서' emphasizes that the subject performed the action independently.