Let's learn about "뭔 일 있어?"

무슨 일 있어? = 뭔 일 있어? : Did something happen?

[oher expressions]

- 무슨 일 있니? = 뭔 일 있니? (to younger people or friends)

- 무슨 일 있나? = 뭔 일 있나? (to younger people or friends)

- 무슨 일 있냐? = 뭔 일 있냐? (to younger people or friends)

- 무슨 일 있어?= 뭔 일 있어? (to younger people or friends)

- 무슨 일 있는가? = 뭔 일 있는가? (to younger people or friends)

- 무슨 일 있나요? = 뭔 일 있나요? (honourific by ‘-요’)

- 무슨 일 있어요? = 뭔 일 있어요? (honourific by ‘-요’)

- 무슨 일 있는가요? = 뭔 일 있는가요? (honourific by ‘-요’)

- 무슨 일 있으세요?= 뭔 일 있으세요? (more honourific by ‘-시’)

- 무슨 일 있으셔요?= 뭔 일 있으셔요? (more honourific by ‘-시’)

- 무슨 일 있습니까?= 뭔 일 있습니까? (formal; more honourific by ‘-시’)

- 무슨 일 있으십니까?= 뭔 일 있으십니까? (more honourific by ‘-시’)

[explanations]

* 뭔 : a short form of 무슨(what)

* 뭐 : a short form of 무슨(what)

* 일 :  (1) a matter; a thing; an affair; something (2) an incident; an occurrence; an event; an accident; trouble (3) a plan; a business; an errand; a scheme; a project; a program; an undertaking

* -이 : a particle makes a noun the topic of the sentence after a word ends in a consonant

* 있다 : (1) be; exist (2) happen; occur in the sentence

* 있으세요? : 있(the stem of 있다) + -으시(a suffix makes a verb more honourific) + -어(a interrogative verb ending suffix) + -요(an honourific verb ending suffix)

* 있으셔요? : 있(the stem of 있다) + -으시(a suffix makes a verb more honourific) + -여(a interrogative verb ending suffix) + -요(an honourific verb ending suffix)

* 있습니까 : 있(the stem of 있다) + -스(a suffix makes a verb more honourific) + -ㅂ시오(an  honourific interrogative verb ending suffix)

* 있으십니까? : 있(the stem of 있다) + -으시(a suffix makes a verb more honourific) + -ㅂ니까(an honourific interrogative verb ending suffix by ‘-ㅂ’)

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

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

* a verb + -(으)세요? / -(으)셔요? / -(으)십니까? / -습니까? / -ㅂ니까? : an honourific interrgative verb ending suffix by ‘-시-‘ / ‘-요’