바꿨기

In a sentence

• 나는 핸드폰을 새로 바꿨기 때문에 새 번호를 알려줄게.

  Because I changed my phone, I'll give you my new number.

  The word '바꿨기', from the verb '바꾸다', is used here to mean 'changed' or 'switched'. It indicates completion of the action in the past and shows the reason for the subsequent phrase.

• 바꿨기 때문이라면 이해할 수 있어.

  If it's because it was changed, I can understand.

  Here, '바꿨기' is used within a conditional phrase as a reason for a possibility, meaning 'switched' or 'changed.' This usage links a cause (changing something) to a result or condition.

• 규칙을 바꿨기 전에 협의를 했어야 했습니다.

  Before they changed the rules, they should have held a discussion.

  In this sentence, '바꿨기' refers to the act of having changed something, indicating the completion of the act and its temporal placement before another action.