Let's learn about "왜 울어"

왜 울어? : Why are you crying?

[other expressions]

- 왜 우니? (to younger people or friends)

- 왜 우나? (to younger people or friends)

- 왜 우냐? (to younger people or friends)

- 왜 울어? (to younger people or friends)

- 왜 우는가? (to younger people or friends)

- 왜 우나요? (honourific by ‘-요’)

- 왜 울어요? (honourific by ‘-요’)

- 왜 우는가요? (honourific by ‘-요’)

- 왜 웁니까? (formal; honourific by ‘-ㅂ’)

- 왜 우십니까? (more honourific by ‘-시’)

[explanations]

* 왜 : why

* 울다 : cry

* 우니? : 울(the stem of 울다; ㄹ erased before a consonant)  + -니?(a non-honourific interrogative verb ending suffix; this used after a verb ends in a consonant)

* 우나? : 울(the stem of 울다; ㄹ erased before a consonant)  + -나?(a non-honourific interrogative verb ending suffix; this used after a verb ends in a consonant)

* 우냐? : 울(the stem of 울다; ㄹ erased before a consonant)  + -냐?(a non-honourific interrogative verb ending suffix; this used after a verb ends in a consonant)

* 우는가? : 울(the stem of 울다; ㄹ erased before a consonant)  + -는가?(a non-honourific interrogative verb ending suffix; this used after a verb ends in a vowel)

* 웁니까? : 울(the stem of 울다; ㄹ erased before a consonant) + -ㅂ니까?(an honourific interrogative verb ending suffix)

* 우십니까? : 울(the stem of 울다; ㄹ erased before a consonant) + -시(a suffix makes a verb more honourific) + -ㅂ니까?(an  honourific interrogative verb ending suffix)

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