haru Korean › Grammar › Level 3B › A/V-(으)ㄹ걸(요) —월세가 조금 오를걸요
A/V-(으)ㄹ걸(요) —월세가 조금 오를걸요 — I bet … · probably … — a casual guess you feel fairly sure of
I bet … · probably … — a casual guess you feel fairly sure of. Korean grammar for intermediate learners — Level 3B, lesson 11: 계약서는 꼼꼼히 읽어야 해요 (Read the contract carefully — paperwork and formal language).
What it means
-(으)ㄹ걸요 makes a guess you feel fairly sure about, in a relaxed, conversational way: 월세가 조금 오를걸요 'I bet the rent will go up a bit'. After a 받침 add 을걸요 (많을걸요, 있을걸요); after a vowel add ㄹ걸요 (오를걸요, 비쌀걸요); a stem that already ends in ㄹ keeps just one ㄹ (알다 → 알걸요), and irregular stems change as they do before 으 (어렵다 → 어려울걸요, 듣다 → 들을걸요). For something that has probably happened already, put -았/었- in front: 벌써 보냈을걸요 'they've probably sent it already'. With a noun use 일걸요 — 아마 학생일걸요 — and the negative is 아닐걸요. The voice usually rises at the end, and the ending often gently corrects what someone has just said: 오늘이 아닐걸요? 내일일걸요. Between close friends drop 요: 오를걸. Don't mix it up with -(으)ㄹ걸 그랬다 (Lesson 3A-5), a regret with a falling voice: 살걸 그랬어요 'I should have bought it'. Because it sounds casual and a little bold, use -(으)ㄹ 거예요 or -(으)실 거예요 with teachers and bosses.
Forms
| Pattern | When | Example |
|---|---|---|
| -을걸요 | 받침 O | 많다 + 을걸요 → 많을걸요 |
| -ㄹ걸요 | 받침 X · ㄹ (ㄹ은 하나) · N이다 → N일걸요 | 오르다 + ㄹ걸요 → 오를걸요 |
| -았/었을걸요 | 과거 — 이미 끝났을 일 | 보내다 (이미) → 보냈을걸요 |
Key points
- A/V-(으)ㄹ걸요 = I bet … · probably … (the voice goes up ↗): 받침 → 을걸요 (많을걸요 · 있을걸요) · no 받침 or ㄹ → ㄹ걸요 (오를걸요 · 비쌀걸요 · 알걸요)
- Already done: -았/었을걸요 (보냈을걸요). Nouns: N일걸요 · N이/가 아닐걸요. To a close friend, drop 요: 오를걸. Not the same as -(으)ㄹ걸 그랬어요 (Lesson 3A-5), which is a regret.
Examples
- 잘 모르지만 「아마 그럴 거예요」 하고 생각할 때 써요: 월세가 조금 오를걸요.
- 받침 O → -을걸요: 많을걸요 · 있을걸요 · 어려울걸요(ㅂ).
- 받침 X · ㄹ → -ㄹ걸요: 오를걸요 · 비쌀걸요 · 알걸요(ㄹ은 하나).
- 이미 끝났을 일은 -았/었을걸요: 벌써 보냈을걸요. 명사는 N일걸요 · 아닐걸요.
- 끝을 올려서 말해요 ↗. 3A 5과 「살걸 그랬어요」는 아쉬운 마음, 오늘 「오를걸요」는 「아마 오를 거예요」예요.
Where university textbooks teach it
This point also appears in: Seoul National University Korean 3B, lesson 15; Sogang University Korean 5B, lesson 3; Ewha Womans University Korean 3-1, lesson 5; Hongik University Korean 3B, lesson 10; Hanyang University Korean 3-1, lesson 2; Yonsei University Korean 3-2, lesson 13.
Also in this lesson
- V-아/어 가다 —계약이 거의 끝나 가요 — going on … · getting … · almost … — a change that keeps moving on from now
- 문어체 N(으)로 인해(서) · -(으)ㅁ —고장으로 인해 쓸 수 없음 — written style — 'due to …' and the -(으)ㅁ ending of contracts, memos and signs
- V-(으)시기 바랍니다 · -기 바라다 —번호표를 뽑고 기다리시기 바랍니다 — please … (notices and announcements) · I hope … — the polite ending of public notices