Let's learn about "고민이 많아"

고민이 많아 : I have a lot on my mind

[other expressions]

- 고민이 많다. (to younger people or friends)

- 고민이 많네. (to younger people or friends)

- 고민이 많아. (to younger people or friends)

- 고민이 많은데. (to younger people or friends)

- 고민이 많네요. (honourific by '-요')

- 고민이 많은데요. (honourific by '-요')

- 고민이 많아요. (honourific by '-요')

- 고민이 많습니다. (formal; honourific by '-ㅂ')

[explanations]

* 고민 : agony; anguish; pang; worry

* -이 : a particle makes 고민 subjective after a word ends in a consonant

* 많은 : many; much; a lot

* 많다 : a verb form of 많은

* 많습니다 : 많(the stem of 많다) + -스(a suffix makes a verb more honourific) + -ㅂ니다(an honourific descriptive verb ending suffix by '-ㅂ')

* a verb + -다 / -네 / -은데 / -아 : a non-honourific descriptive verb ending suffix

* a verb + -네 / -은데 + -요 : an honourific verb ending suffix

* a verb + -습니다 : an honourific descriptive verb ending suffix by '스'