Everyone thinks that ~은/는 and ~이/가 are subject or topic particles, and ~을/를 are object particles at the beginner level. So, is this correct?❌❌❌❌❌ Unfortunately, you can never truly master them with those incorrect methods, as shown by those who have lived in Korea for 10 years yet still make mistakes. (noun)C을/V를 is used with 'action' verbs. *열다 to open *안 열다 not open *열리다 ????? *안 열리다 ?????