Let's learn about "어디 가?"

어디 가? : Where are you going?

[other expressions]

- 어디 가니? (to younger people or friends)

- 어디 가나? (to younger people or friends)

- 어디 가냐? (to younger people or friends)

- 어디 가? (to younger people or friends)

- 어디 가는가? (to younger people or friends)

- 어디 가나요? (honourific by ‘-요’)

- 어디 가요? (honourific by ‘-요’)

- 어디 가는가요? (honourific by ‘-요’)

- 어디 갑니까? (formal; honourific by ‘-ㅂ’)

- 어디 가십니까? (more honourific by ‘-시’)

[explanations]

* 어디 : where

* 어디로 : 어디 + -으로/로(to; toward; this omitted)

* 가다 : go

* 가? : 가(the stem of 가다; 가 + -아 contracted into 가) + -아?(a non-honourific interrogative verb ending suffix)

* 가는가? : 가(the stem of 가다) + -ㄴ가?(a non-honourific interrogative verb ending suffix)

* 갑니까? : 가(the stem of 가다) + -ㅂ니까?(an  honourific interrogative verb ending suffix)

* 가십니까? : 가(the stem of 가다) + -시(a suffix makes a verb more honourific) + -ㅂ니까?(an honourific interrogative verb ending suffix)

* a verb + -니? / -나? / -냐? / -ㄴ가? / -아? / -어? : a non-honourific interrogative verb ending suffix

* a verb +  -나? / -ㄴ가? / -아? / -어? + -요 : an honourific verb ending suffix

* a verb + -ㅂ니까? / -십니까? : an honourific interrgative verb ending suffix by ‘-ㅂ-‘ / '스'