거게서 한국사람 입니가?

Answer 1

Korean here!! You're doing great but you have some grammatical problems. If you want to ask somebody if he/she 's Korean, you can say "당신은 한국사람입니까?"

or just using other words like...
한국
미국
일본

hope you like it!

Answer 2

Do not know if there are Koreans, but you should ask it in English. :)

Answer 3

I'm most interested to know who the down votes are from😊☺ Is my infantile 국어 offensive? If so, I will get better.
한국사람 입니카?
미국사람 입니가?
일번사람 임니가?