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Korean Grammar Patterns

-ㄹ걸(요)

Meaning

mild regret / supposition

How to use it

With past form (-았/었을걸) it expresses mild regret 'I should have…'; with present it expresses a tentative supposition 'probably…'. The regret use is usually self-directed and casual; the supposition use can take -요.

Regret: 미리 예매할걸 'I should've booked ahead.',Supposition: 지금쯤 도착했을걸요 'They've probably arrived by now.'

Examples

KoreanEnglish
이럴 줄 알았으면 일찍 출발할걸.
ireol jul arasseumyeon iljjik chulbalhalgeol.
If I'd known, I should have left earlier.
민호는 아마 집에 있을걸요.
minhoneun ama jibe isseulgeollyo.
Minho is probably at home, I'd guess.

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