it looks like there's an event (I guess that...)

This pattern expresses a guess or assumption based on an observed fact or situation. It's like saying "I guess...", "It seems that...", or "It looks like...".

Meaning & Usage

Meaning: It's used to make a conjecture about a situation after observing something that serves as the basis for that guess. The speaker has some external evidence, making the guess stronger than a pure assumption.

When to use: Use it when you see, hear, or otherwise perceive something and then state your logical conclusion. For example, if you see your friend yawning repeatedly, you might say, "피곤한가 봐요" (You must be tired).

Conjugation Rules

Adjectives: Attach -(으)ㄴ가 보다.

Vowel or ㄹ stem: -ㄴ가 보다 (e.g., 크다 → 큰가 보다 / 멀다 → 먼가 보다)

Consonant stem: -은가 보다 (e.g., 작다 → 작은가 보다)

Verbs: Attach -나 보다 to the verb stem, regardless of whether it ends in a vowel or consonant.

e.g., 오다 → 오나 보다 / 먹다 → 먹나 보다

Nouns: Attach -(이)ㄴ가 보다.

Vowel ending: -ㄴ가 보다 (e.g., 의사 → 의사인가 보다)

Consonant ending: -인가 보다 (e.g., 학생 → 학생인가 봐요)

Adj: 바쁘다 → 바쁜가 보다 / Verb: 가다 → 가나 보다 / Noun: 휴일 → 휴일인가 보다

A common point of confusion for learners is the difference between ~나 보다 and ~(으)ㄹ 것 같다, as both are used for guessing.

~나 보다: Guessing with Evidence

Context: This expression is used when you have a clear, observable reason for your guess. You are reacting to a piece of evidence you can see or hear right now. It implies a stronger, more certain guess based on facts.

Example: 불이 다 꺼져 있네요. 모두 퇴근했나 봐요. (The lights are all off. I guess everyone has gone home.) — The evidence is the lights being off.

~(으)ㄹ 것 같다: General or Subjective Guess

Context: This expression is more versatile and can be used for a wider range of guesses. It can be based on evidence, but it can also be a purely subjective feeling, a prediction, or a general thought without a strong, direct basis.