하나를

In a sentence

• 나는 사과 하나를 먹었어요.

  I ate one apple.

  Here, '하나를' is used as the direct object of the verb, denoting a specific quantity (one).

• 나는 친구에게 선물 하나를 주었어요.

  I gave one gift to my friend.

  In this sentence, '하나를' specifies one item (a gift) that is given as the object of the action.

• 이 중에서 생각나는 하나를 골라주세요.

  Please choose one that comes to mind from these options.

  Here, '하나를' is specifying a single item or option to select from a group.