Let's learn about "쓸모가 있다"

쓸모가 있다 : It’s useful

쓸모가 없다 : It's useless

ex)

A. 그거 어디에 쓸 건데? : What are you gonna use it for?

B. 이거 겨울에 창문 사이에 붙이면 찬바람이 안 들어오니까 참 쓸모가 있네 : It's very useful because cold wind doesn't come in when I put it between the windows in winter

[other expressions]

- 쓸모가 있다. (to younger people or friends)

- 쓸모가 있네. (to younger people or friends)

- 쓸모가 있어. (to younger people or friends)

- 쓸모가 있네요. (honourific by '-요')

- 쓸모가 있어요. (honourific by '-요')

- 쓸모가 있습니다. (formal; more honourific by '스-')

- 쓸모가 없다. (to younger people or friends)

- 쓸모가 없네. (to younger people or friends)

- 쓸모가 없어. (to younger people or friends)

- 쓸모가 없네요. (honourific by '-요')

- 쓸모가 없어요. (honourific by '-요')

- 쓸모가 없습니다. (formal; more honourific by '스-')

[explanations]

* 쓸모 : 쓸 만한 가치(a useful value); 쓰일 자리(a place to use)

* -가 : a particle makes 쓸모 the topic of the sentence after a word ends in a consonant; this omitted

- (이거는) 아무 데도 쓸모가 없다 : This is of no use

* 없다 : [Pronunciation: 업따]  (1) not exist; be not (2) don't have in the sentence

* 있다 : [Pronunciation: 잇따] (1) exist; be (2) have

* -이 없다 = -가 없다 : (1) there is no; there are no (2) I don't have: We don't have

* -이 있다 = -가 있다 : (1) there is; there are (2) I have: We have

* 있습니다 : [Pronuncition: 있습니다] 있(the stem of 있다) + -스(a suffix makes a verb more honourific) + -ㅂ니다(an honourific descriptive verb ending suffix)

* 없습니다 : [Pronuncition: 업습니다] 없(the stem of 없다) + -스(a suffix makes a verb more honourific) + -ㅂ니다(an honourific descriptive verb ending suffix)

* a verb + -다 / -네 / -어 : a descriptive verb ending suffix

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

* a verb + -습니다 / -ㅂ니다 : a descriptive verb ending suffix has an honourific by '스-' / ‘-요’