켜
kyuh
kyeo
regular
켜다
To say to turn on, to light (a lamp or candle) politely in the present tense, use 켜요 (kyuh-yoh) · kyeoyo. Below is the full conjugation of 켜다 across the three tenses and three everyday speech levels.
Grammar note (regular): Regular verbs and adjectives conjugate predictably. Before 어-series suffixes, vowels may contract (가 + 아 → 가, 보 + 아 → 봐), but no consonant in the stem changes. If the final vowel of the stem is ㅏ or ㅗ, use 아; otherwise use 어. Consonant-final stems: 먹 + 어 → 먹어; vowel-final: 가 + 아 → 가.
Conjugation table
pron. = pronunciation guide · RR = Revised Romanization
| Tense | Casual (반말) | Polite (요) | Formal (합니다) |
|---|---|---|---|
| Present | 켜요 kyuh-yoh kyeoyo | 켭니다 kyuhm-nee-dah kyeomnida | |
| Past | 켰어 kyuh-ssuh kyeosseo | 켰어요 kyuh-ssuh-yoh kyeosseoyo | 켰습니다 kyuh-sseum-nee-dah kyeosseumnida |
| Future | 켤 거야 kyuhl guh-yah kyeol geoya | 켤 거예요 kyuhl guh-yae-yoh kyeol geoyeyo | 켤 겁니다 kyuhl guhm-nee-dah kyeol geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
켜세요
kyuh-sae-yoh
kyeoseyo
Suggestion / Let's Polite (요)
켜요
kyuh-yoh
kyeoyo
Question Polite (요)
켜요?
kyuh-yoh-?
kyeoyo?
Connective "and" — (고)
켜고
kyuh-goh
kyeogo
Conditional "if" — (면)
켜면
kyuh-myuhn
kyeomyeon
Progressive (고 있어요)
켜고 있어요
kyuh-goh ee-ssuh-yoh
kyeogo isseoyo
Want to (고 싶어요)
켜고 싶어요
kyuh-goh shee-puh-yoh
kyeogo sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
켤 수 있어요
kyuhl soo ee-ssuh-yoh
kyeol su isseoyo
Because / So (아/어서)
켜서
kyuh-suh
kyeoseo
Noun form — (기)
켜기
kyuh-gee
kyeogi
Noun form — (음)
켬
kyuhm
kyeom