Korean Supposition with 것 같다

In Brief

Korean commonly puts a noun-modifying form before 것 같다 to mean “it seems,” “it looks as though,” or “I think.” Use -는 것 같다 for a present action, -(으)ㄴ 것 같다 for a completed action or present description, and -(으)ㄹ 것 같다 for a future event or prediction: 오는 것 같아요, 온 것 같아요, 올 것 같아요.

Overview

The pattern 것 같다 is one of the most useful ways to avoid sounding too certain. 것 is a dependent noun (a noun that needs another expression before it) meaning “thing” or “fact,” while 같다 means “to be the same” or “to seem.” Together with a clause that modifies 것, the whole expression presents something as an impression, inference, or tentative opinion.

English uses several different phrases for this job: “it seems,” “it looks like,” “apparently,” “probably,” and often simply “I think.” Korean uses 것 같다 across much of this range. The best English translation therefore depends on the evidence and context rather than on a single fixed phrase.

This is a core B1 pattern because choosing the form before 것 requires the noun-modifying forms learned earlier. It is extremely frequent in conversation. Korean speakers often prefer 것 같아요 when giving an estimate, disagreeing gently, describing an uncertain observation, or making a prediction.

How It Works

The basic structure

The structure is:

clause in noun-modifying form + 것 같다

The noun-modifying form is a verb ending that lets the verb describe a following noun. Here, that following noun is 것. In polite everyday speech, 같다 becomes 같아요. The uncertainty usually belongs to the whole idea before 것 같아요.

Form	Typical meaning	Used with
-는 것 같아요	seems to be doing; I think … does	present action verbs
-(으)ㄴ 것 같아요	seems to have done	completed action verbs
-(으)ㄴ 것 같아요	seems to be …	descriptive verbs (Korean adjectives) in the present
-(으)ㄹ 것 같아요	seems likely to do; probably will	future actions and predictions
인 것 같아요	seems to be …	nouns + 이다

Korean “adjectives” such as 피곤하다 and 좋다 behave like verbs and are often called descriptive verbs. This matters because they do not take present action -는 in this pattern.

Present actions: -는 것 같다

Attach -는 to an action-verb stem. The stem is the dictionary form without -다.

• 가다 → 가는 것 같아요 — It seems that someone is going / I think someone goes.
• 먹다 → 먹는 것 같아요 — It seems that someone is eating.
• 공부하다 → 공부하는 것 같아요 — It seems that someone is studying.

This form often describes an action in progress, a repeated action, or a present situation. Context decides which reading fits. 요즘 운동을 많이 하는 것 같아요 can mean “I think he has been exercising a lot lately,” not only “He seems to be exercising at this exact moment.”

For 있다 and 없다, use 있는 and 없는: 사람이 있는 것 같아요 (“It seems someone is there”), 시간이 없는 것 같아요 (“It seems there is no time”). Although these words describe states, their noun-modifying forms are 있는/없는, not 있은/없은.

Completed actions: -(으)ㄴ 것 같다

Use -ㄴ after a vowel and -은 after most consonants to infer that an action has already happened.

• 가다 → 간 것 같아요 — It seems that someone left/went.
• 오다 → 온 것 같아요 — It seems that someone came.
• 먹다 → 먹은 것 같아요 — I think someone ate it.
• 닫다 → 닫은 것 같아요 — It seems someone closed it.

If the stem ends in ㄹ, that ㄹ normally drops before -ㄴ: 만들다 → 만든 것 같아요, 열다 → 연 것 같아요.

You can also make the past explicit with -았/었- followed by -던 것 같다, especially when recalling an earlier situation: 전에 여기서 만났던 것 같아요 (“I think we met here before”). The simpler 만난 것 같아요 is enough for the basic completed inference.

Present descriptions: -(으)ㄴ 것 같다

With a descriptive verb, -(으)ㄴ normally describes a present quality or state.

• 피곤하다 → 피곤한 것 같아요 — He/she seems tired.
• 좋다 → 좋은 것 같아요 — It seems good / I think it is good.
• 작다 → 작은 것 같아요 — It seems small.
• 길다 → 긴 것 같아요 — It seems long.

Notice the contrast: 간 것 같아요 is past because 가다 is an action verb, but 작은 것 같아요 is present because 작다 is descriptive. Do not determine the time from -(으)ㄴ alone; first identify the type of verb.

Predictions: -(으)ㄹ 것 같다

Use -ㄹ after a vowel and -을 after most consonants. If a stem already ends in ㄹ, do not add another one.

• 오다 → 올 것 같아요 — It looks like it will come / I think someone will come.
• 먹다 → 먹을 것 같아요 — I think someone will eat it.
• 살다 → 살 것 같아요 — It seems someone will live.
• 만들다 → 만들 것 같아요 — I think someone will make it.

This form is used for future events, likely outcomes, and predictions from present evidence. With descriptive verbs, it often predicts how something will be or gives a tentative expectation: 맛있을 것 같아요 means “It looks as though it will be tasty” or simply “That looks tasty.”

Nouns: 인 것 같다

A noun combines with the noun-modifying form of 이다, which is 인.

• 학생인 것 같아요 — I think he/she is a student.
• 농담인 것 같아요 — It seems to be a joke.
• 제 가방이 아닌 것 같아요 — I do not think it is my bag.

Do not attach -는 directly to a noun. For a negative identification, use 아닌 것 같다, from 아니다.

Speech level and tense on 같다

The final 같다 carries the speech level. Common forms include:

Form	Meaning	Register or time
것 같아	I think / it seems	casual
것 같아요	I think / it seems	everyday polite
것 같습니다	I think / it appears	formal polite
것 같았어요	it seemed / I thought	past viewpoint

Compare 비가 온 것 같아요 and 비가 올 것 같았어요. The first is a present inference that rain has fallen. The second reports a past impression that rain was going to fall. The form before 것 locates the guessed event; the tense on 같다 locates the act of seeming or thinking.

Examples in Context

Korean	English	Note
밖에 비가 오는 것 같아요.	It seems to be raining outside.	Present action
민수 씨는 요즘 많이 바쁜 것 같아요.	Minsu seems very busy these days.	Present description
불이 꺼져 있어요. 벌써 잔 것 같아요.	The light is off. I think they have already gone to sleep.	Inference about a completed action
그가 간 것 같아요.	It seems like he left.	Completed action
이 음식은 조금 매운 것 같아요.	I think this food is a little spicy.	Softened personal assessment
회의가 곧 끝날 것 같아요.	It looks as though the meeting will end soon.	Prediction
하늘이 흐려서 비가 올 것 같아요.	The sky is cloudy, so it looks like it will rain.	Prediction from visible evidence
이 케이크는 맛있을 것 같아요.	This cake looks like it will be delicious.	Expected quality
열쇠를 집에 두고 온 것 같아요.	I think I left my keys at home.	Uncertain recollection
저분은 새로 오신 선생님인 것 같아요.	I think that person is the new teacher.	Noun + 인; honorific verb form
길을 잘못 든 것 같아요.	I think we took the wrong road.	A cautious realization
이 방법이 더 좋은 것 같아요.	I think this method is better.	Softened opinion
오늘은 사람이 별로 없는 것 같아요.	It seems there are not many people today.	없는, not 없은
예전에 이 카페에 와 봤던 것 같아요.	I think I have been to this café before.	Vague recollection with -던
제가 날짜를 잘못 확인한 것 같습니다.	It appears that I checked the date incorrectly.	Formal, useful in careful explanations

Common Mistakes

Using -는 with a descriptive verb

• Wrong: 피곤하는 것 같아요.
• Right: 피곤한 것 같아요.
• Why: 피곤하다 is a descriptive verb. Its present noun-modifying form is 피곤한, not 피곤하는. Present -는 is for action verbs.

Treating -(으)ㄴ as “past” in every case

• Wrong interpretation: 작은 것 같아요 = “It seems it was small.”
• Right interpretation: 작은 것 같아요 = “It seems small.”
• Why: With action verbs, -(으)ㄴ commonly marks a completed action; with descriptive verbs, it marks a present state. For a clearly past state, say something such as 작았던 것 같아요 (“I think it was small”).

Forgetting 인 after a noun

• Wrong: 학생 것 같아요.
• Right: 학생인 것 같아요.
• Why: A noun needs 인, the noun-modifying form of 이다, before 것 같다.

Confusing a present action with a future guess

• Wrong for “It seems he is coming now”: 지금 올 것 같아요.
• Right: 지금 오는 것 같아요.
• Why: 오는 presents the action as happening now. 올 normally predicts that the arrival will happen. In real conversation context can blur the boundary, but learning the contrast prevents many misunderstandings.

Adding a second ㄹ

• Wrong: 살을 것 같아요.
• Right: 살 것 같아요.
• Why: When a stem already ends in ㄹ, use it directly before 것: 살다 → 살 것, 만들다 → 만들 것.

Translating every English “I think” with 저는 생각해요

• Awkward in many everyday judgments: 저는 이게 더 좋아요라고 생각해요.
• Natural: 이게 더 좋은 것 같아요.
• Why: Korean frequently uses 것 같아요 for a tentative judgment. -다고 생각해요 is possible, but it can frame the statement as a more explicit, considered belief. Also, the quotation form—not 좋아요라고—would be 좋다고 생각해요.

Usage Notes

Evidence can be visual, remembered, or inferred

The construction does not specify how you obtained the information. You might see dark clouds, hear movement in another room, notice an empty desk, or have an uncertain memory. Context supplies the evidence. This is why translations such as “looks like,” “sounds like,” “apparently,” and “I think” may all be appropriate.

If the source matters, add it explicitly: 소리를 들어 보니 사람이 있는 것 같아요 (“Judging from the sound, I think someone is there”). The pattern itself still marks the conclusion as less than certain.

A hedge, not necessarily real doubt

A hedge is language that makes a claim less direct or absolute. Korean uses 것 같아요 not only when the speaker lacks information, but also when a direct statement could sound too strong. 이 방법이 더 좋은 것 같아요 may express a fairly firm preference while leaving room for the listener to disagree.

This helps in recommendations, meetings, feedback, and polite disagreement. However, excessive hedging can make a speaker sound indecisive. For a clear fact you are responsible for, a direct statement may be better: 회의는 세 시에 시작해요 is preferable to 시작하는 것 같아요 if you know the official schedule.

Talking about your own state

You normally know your own actions and plans, so 제가 가는 것 같아요 is strange if you simply mean “I am going.” Yet 것 같다 is natural for a tentative self-assessment or a realization: 감기에 걸린 것 같아요 (“I think I have caught a cold”), 제가 너무 예민한 것 같아요 (“I think I may be too sensitive”). The uncertainty concerns your diagnosis or judgment, not your access to yourself.

Spoken and formal styles

것 같아요 is neutral and extremely common in polite conversation. 것 같아 fits close relationships where casual speech is appropriate. 것 같습니다 is frequent in presentations, workplace explanations, reports, and service encounters; it sounds more formal but still marks caution.

In rapid speech, 것 may sound closer to 거, and learners will often hear -ㄹ 것 같아요 pronounced fluidly. Write the standard spelling 것 같아요. The separate form 거 같아요 is common in informal writing and speech representation, but it is best to recognize it before adopting it in careful writing.

Beyond the Basics / Advanced Use

Comparing 것 같다 with -(으)ㄴ가 보다 and -나 보다

-나 보다 / -(으)ㄴ가 보다 also means “it seems” and often suggests a conclusion drawn from evidence. 것 같다 is broader and especially useful for softening an opinion. For example, 비가 오나 봐요 strongly suggests that something has led the speaker to conclude it is raining, while 비가 오는 것 같아요 is a neutral tentative observation. The distinction is a tendency, not a rigid evidence rule.

Comparing 것 같다 with 모양이다

모양이다 literally relates to appearance or shape and can present a conclusion as “it appears that…”: 아무도 없는 모양이에요 (“It appears nobody is there”). It often feels more like an inference from circumstances. 것 같다 remains the safer all-purpose choice for B1 learners and is more natural for softly stating personal evaluations.

Comparing a guess with hearsay

Do not use 것 같다 when your main point is that someone else supplied the information. Hearsay forms such as -대요 mark reported information:

• 내일 비가 올 것 같아요. — I think it will rain.
• 내일 비가 온대요. — I heard that it will rain / They say it will rain.

You can combine sources and inference in a larger context, but the two endings do different jobs: one marks your supposition, the other reports speech.

Negation and scope

Negation can occur inside the guessed clause:

• 안 올 것 같아요. — I do not think they will come / It seems they will not come.
• 학생이 아닌 것 같아요. — I do not think the person is a student.
• 문제가 없는 것 같아요. — It seems there is no problem.

English often says “I don’t think…” where Korean naturally places the negative inside the supposition. 안 올 것 같아요 directly guesses a negative outcome. 올 것 같지 않아요 is also possible and means “It does not seem that they will come,” often with a slightly more deliberate contrast.

것 같았다 for a past impression

Changing 같다 to the past reports what seemed true at an earlier time, even if your view later changed:

• 처음에는 쉬울 것 같았어요. — At first, I thought it would be easy.
• 그때는 괜찮은 것 같았어요. — At the time, it seemed okay.

This distinction is useful in narratives: 쉬운 것 같아요 is your assessment now, whereas 쉬울 것 같았어요 was your expectation then.

Practice Tips

1. Build three-form sets. Choose one action verb each day and say its present, completed, and predicted versions: 먹는 것 같아요 → 먹은 것 같아요 → 먹을 것 같아요. This makes the time contrast automatic.
2. Separate actions, descriptions, and nouns. Make three small lists: 가는, 피곤한, 학생인. Sorting examples by word type is more effective than memorizing 것 같아요 as one unchanging chunk.
3. Narrate uncertain evidence. Look outside, listen to sounds nearby, or examine a photo and make five cautious guesses: 비가 올 것 같아요, 사람이 있는 것 같아요, 늦은 것 같아요. Then state one known fact directly so you also practise when not to hedge.

Related Concepts

• Prerequisite: Verb/Adj Modifying Nouns — supplies the -는, -(으)ㄴ, and -(으)ㄹ forms used before 것.
• Related: Future/Intention -(으)ㄹ 거예요 — uses the same future noun-modifying form but states a future plan or prediction more directly.
• Related: Suggestion -(으)ㄹ까요 — also uses -(으)ㄹ and can ask what the listener thinks may happen.
• Next step: Hearsay -다고 하다 / -대요 — distinguishes your own guess from information reported by someone else.