공부를

In a sentence

• 나는 매일 학교에서 공부를 합니다.

  I study at school every day.

  '공부를' is the object of the verb '합니다,' indicating that 'studying' is the action being performed.

• 동생은 집에서 공부를 잘 못합니다.

  My younger sibling cannot study well at home.

  '공부를' is the object of the verb '못합니다,' suggesting difficulty or inability in performing the act of studying well.

• 공부를 마치고 친구를 만났습니다.

  After finishing studying, I met a friend.

  '공부를' functions as the object of the verb '마치고,' denoting the act of studying that was completed before meeting the friend.