Let’s learn about "왜 혼자야?”

왜 혼자야? : Why are you alone?

[other expressions]

- 왜 혼자니? (to younger people or friends)

- 왜 혼자냐? (to younger people or friends)

- 왜 혼자지? (to younger people or friends)

- 왜 혼자인가? (to younger people or friends)

- 왜 혼잔가? (to younger people or friends; 혼잔가? is a short form of 혼자인가?)

- 왜 혼자지요? (honourific by ‘-요’)

- 왜 혼자죠? (honourific by ‘-요’; -죠? is a short form of -지요?)

- 왜 혼자인가요? (honourific by ‘-요’)

- 왜 혼잔가요? (honourific by ‘-요’; -혼잔가요? is a short form of  혼자인가요?)

- 왜 혼자입니까? (formal; honourific by ‘-ㅂ’)

- 왜 혼잡니까? (formal; honourific by ‘-ㅂ’; 혼잡니까? is  a short form of 혼자입니까?)

[explanations]

* 왜 : why; this word has the same etymology of why

* 혼자 : [noun•adverb] alone, (all) by oneself, (all) on one's own (=홀로)

- 저는 혼자만의 시간이 필요해요 : I need some time alone

- 혼자 살다 : live alone

- 나는 혼자 산다 : I live alone

* 혼자입니까? : 혼자 + 이(the stem of 이다) + -ㅂ니까(an honourific question verb ending suffix by ‘-ㅂ’)

* a verb + -니? / -냐? / -인가? / -ㄴ가? / -지? : a non-honourific interrogative form of 이다

* a verb + -인가? / -ㄴ가? / -지? + -요 : an honourific verb ending suffix

* a verb + -ㅂ니까? : an honourific interrgative form of 이다 by ‘-ㅂ’