-ji

Explanation

1. -ji
(informal addressee-lowering) A sentence-final ending used when the speaker confirms and says something that the listener thought he/she already knew.

2. -ji
(informal addressee-lowering) A sentence-final ending used to ask something that the speaker already knows to cross-check the information.

3. -ji
(informal addressee-lowering) A sentence-final ending used when the speaker talks about himself/herself or his/her thoughts in a friendly manner.

4. -ji
(informal addressee-lowering) A sentence-final ending used when the speaker asks the listener in a friendly manner.

5. -ji
(informal addressee-lowering) A sentence-final ending used to advise the listener to do something together.

6. -ji
(informal addressee-lowering) A sentence-final ending used to indicate the speaker's regret that something did not turn out the way he/she wanted.

Examples
어제 비가 너무 많이 왔지
우리 아들은 벌써 학교에 갔지
우리가 같이 듣는 아침 수업이 휴강되었지

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