답니다 [Intermediate Grammar]

 - 답니다

→ It is an abbreviated form omitted'고 하' from an indirect speech form of '-(이)라고 합니다.' (refer to Intermediate 1, lesson 2) Indirect speech is usually used when another speaker's word is delivered or quoted. Like what is used here, it is used to explain or inform a certain fact to the other speaker kindly. '답니다', '-(느)ㄴ답니다' are variant forms. Especially a casual form of '-(이)란다' is also used when a senior gives a lesson to a child.

Example: 

1. 전 살림밖에 모르는 평범한 주부랍니다.
    I am an ordinary housewife knowing nothing but housekeeping.

2. 한국에는 추석, 설날말고도 대보름이란 명절도 있답니다.
    There is First Full Moon Day in addition to Chusuk (Korean Thanksgiving Day) and New

Year's Day in Korea.

3. 옛날 옛날에 예쁘고 마음씨 착한 백설 공주가 살았단다.
    Once upon a time, there was a pretty and sweet Snow White princess.

4.

가: 남대문이 가까이서 보니까 멋있어 보이네요.

      Seeing Namdaemun from up close, it looks great.

나: 그래요? 우리나라 국보랍니다.

       Is it? It is a national treasure of our country.