Auxiliaries -고 있다 / -고 싶다 / -게 되다: Reference Table | Korean Grammar

Where the previous reference collected the auxiliaries that ride on the -아/어 form, this page collects three that ride on -고 and -게 — and they are among the first auxiliaries every learner needs. -고 있다 builds the progressive ("be ~ing"), -고 싶다 expresses desire ("want to"), and -게 되다 marks a change of state that came about through circumstances ("come to / end up"). The auxiliary — 있다, 싶다, 되다 — carries the tense and politeness; the main verb stays a bare stem-plus-고 or stem-plus-게.

The grid

Pattern	Meaning	Example	Note
-고 있다 -go itda	progressive — "be ~ing" (action in progress)	공부하고 있어요 gongbuhago isseoyo	honorific subject → -고 계시다 (읽고 계세요)
-고 싶다 -go sipda	desire — "want to" (speaker / listener)	가고 싶어요 gago sipeoyo	inflects like an adjective; object may take 이/가 or 을/를
-게 되다 -ge doeda	change of state — "come to / end up"	좋아하게 됐어요 joahage dwaesseoyo	outcome from circumstances, not one's own decision

-고 있다: the progressive, and its honorific twin

Attach -고 to the verb stem, then conjugate 있다 for the register you need. It reports an action unfolding right now. When the person doing the action deserves respect, 있다 is swapped for its honorific form 계시다 → -고 계시다, raising the whole clause with one word.

지금 시험공부하고 있어요.

jigeum siheomgongbuhago isseoyo

I'm studying for an exam right now.

아버지가 신문을 읽고 계세요.

abeojiga sinmuneul ilgo gyeseyo

Father is reading the newspaper. (honorific subject → 읽고 계시다)

-고 싶다: want to — and it conjugates like an adjective

-고 싶다 attaches to a verb stem, but 싶다 itself behaves like a descriptive verb (adjective), which predicts all its shapes: present 싶어요 (never ×싶는다), attributive 싶은 (never ×싶는), past 싶었어요. One quirk English never prepares you for: the object of the wanted verb may keep 을/를 or switch to 이/가 — 물을 마시고 싶어요 and 물이 마시고 싶어요 are both fine, the 이/가 version pulling the spotlight onto the thing desired.

따뜻한 커피가 마시고 싶어요.

ttatteutan keopiga masigo sipeoyo

I want to drink a warm coffee. (object marked 이/가 — spotlight on the coffee)

주말에는 아무것도 하고 싶지 않아요.

jumareneun amugeotdo hago sipji anayo

On weekends I don't want to do anything at all.

A second split, and the deeper one: -고 싶다 expresses the speaker's own felt desire (or, in a question, the listener's). To report a third person's wanting — something you can only observe from the outside — Korean switches to -고 싶어하다. English uses one word, "want," for me, you, and her alike; Korean grammatically separates the desire you feel from the inside from the desire you merely see.

동생이 자전거를 사고 싶어해요.

dongsaeng-i jajeongeoreul sago sipeohaeyo

My younger sibling wants to buy a bicycle. (third person → 싶어하다)

-게 되다: come to / end up

Attach -게 to the verb stem and add 되다, which carries the tense. The meaning is "come to [do] / end up [doing]," and the flavor is that the outcome arose from circumstances, natural progression, or someone else's decision — not your own initiative. It is also a courteous way to announce news, since it quietly credits the situation rather than yourself.

이번에 부산으로 이사 가게 됐어요.

ibeone busaneuro isa gage dwaesseoyo

It turns out I'll be moving to Busan. (circumstances led to it)

한국 드라마를 보다가 한국어를 좋아하게 됐어요.

hanguk deuramareul bodaga hangugeoreul joahage dwaesseoyo

Watching Korean dramas, I came to like the Korean language.

The boundary that trips everyone: -고 있다 vs -아/어 있다

These two look similar and mean opposite things. -고 있다 marks an ongoing action — the change is still happening. -아/어 있다 marks a resulting state — the change is finished and its result holds. The classic minimal pair is the door: 문을 닫고 있어요 is "someone is (in the middle of) closing the door," while 문이 닫혀 있어요 is "the door is (already) closed and standing shut."

지금 문을 닫고 있어요.

jigeum muneul datgo isseoyo

I'm closing the door right now. (the closing is in progress)

문이 벌써 닫혀 있어요.

muni beolsseo dacheo isseoyo

The door is already closed. (resulting state)

💡

Diagnose by the subject and the verb type. If a doer is actively performing a transitive action right now → -고 있다. If the thing itself is sitting in the state a completed intransitive change left behind → -아/어 있다. "The lights are on" is a state (켜져 있다); "someone is turning the lights on" is an action (켜고 있다).

Common Mistakes

1. Conjugating 싶다 like an action verb. It is descriptive, so its plain form is 싶다 and its present is 싶어요 — never ×싶는다.

❌ 저는 집에 가고 싶는다.

Wrong — 싶다 is an adjective; it takes 싶어 / 싶다, not the action-verb plain form ×싶는다.

✅ 저는 집에 가고 싶어요.

jeoneun jibe gago sipeoyo

I want to go home.

2. Using -고 싶다 for a third person. Someone else's observed wanting takes -고 싶어하다.

❌ 동생이 놀이공원에 가고 싶어요.

Wrong — for a third party's desire use 싶어해요: 가고 싶어해요.

✅ 동생이 놀이공원에 가고 싶어해요.

dongsaeng-i norigongwone gago sipeohaeyo

My sibling wants to go to the amusement park.

3. Using -고 있다 for a static result. A state that just holds needs -아/어 있다.

❌ 벽에 시계가 걸고 있어요.

Wrong — a hanging clock is a resulting state: 걸려 있어요, not the progressive ×걸고 있어요.

✅ 벽에 시계가 걸려 있어요.

byeoge sigyega geollyeo isseoyo

A clock is hanging on the wall.

4. Putting tense on the main verb of -게 되다. The past rides on 되다.

❌ 여기서 일했게 됐어요.

Wrong — the past goes on 되다: 일하게 됐어요, not ×일했게 됐어요.

✅ 여기서 일하게 됐어요.

yeogiseo ilhage dwaesseoyo

It turned out I'd be working here.

Key Takeaways

-고 있다 = progressive; swap 있다 → 계시다 for an honorific subject (읽고 계세요).
-고 싶다 = "want to," and 싶다 inflects like an adjective (싶어요, 싶은); the object may take 이/가 or 을/를.
Report someone else's desire with -고 싶어하다, not -고 싶다.
-게 되다 = "come to / end up," crediting circumstances; tense sits on 되다.
Keep -고 있다 (ongoing action) and -아/어 있다 (resulting state) apart — the 문을 닫고 있어요 vs 문이 닫혀 있어요 pair is the model.

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