알지

In a sentence

• 너도 그 사람을 알지?

  You know that person, right?

  Here, '알지' is used as a friendly confirmation, checking if the other person agrees with or knows about the given topic.

• 내가 이 문제 해법을 알지.

  I know the solution to this problem.

  In this sentence, '알지' indicates the speaker's certainty about knowing specific information.

• 그게 왜 잘못인지 알지?

  Do you know why that is wrong?

  Here, '알지' is used inquisitively to ask whether someone understands or is aware of the reason for an issue.