잘해
chahl-hae
jalhae
잘하다
To say to do something well, to be good at politely in the present tense, use 잘해요 (chahl-hae-yoh) · jalhaeyo. Below is the full conjugation of 잘하다 across the three tenses and three everyday speech levels.
Grammar note (하다 verb): 하다 verbs are formed with a Sino-Korean noun + 하다 (e.g. 공부하다 = study + do). 하다 conjugates irregularly: the ㅏ in 하 contracts with the -아/-어 suffix to give 해 (not *하어). Present polite: 해요; past polite: 했어요. The formal ending is 합니다 (not *하습니다). Most noun+하다 compounds follow this pattern uniformly. See all 하다 verbs →
Conjugation table
pron. = pronunciation guide · RR = Revised Romanization
Highlighted = where the stem changes
| Tense | Casual (반말) | Polite (요) | Formal (합니다) |
|---|---|---|---|
| Present | 잘해요 chahl-hae-yoh jalhaeyo | 잘합니다 chahl-hahm-nee-dah jalhamnida | |
| Past | 잘했어 chahl-hae-ssuh jalhaesseo | 잘했어요 chahl-hae-ssuh-yoh jalhaesseoyo | 잘했습니다 chahl-hae-sseum-nee-dah jalhaesseumnida |
| Future | 잘할 거야 chahl-hahl guh-yah jalhal geoya | 잘할 거예요 chahl-hahl guh-yae-yoh jalhal geoyeyo | 잘할 겁니다 chahl-hahl guhm-nee-dah jalhal geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
잘하세요
chahl-hah-sae-yoh
jalhaseyo
Suggestion / Let's Polite (요)
잘해요
chahl-hae-yoh
jalhaeyo
Question Polite (요)
잘해요?
chahl-hae-yoh-?
jalhaeyo?
Connective "and" — (고)
잘하고
chahl-hah-goh
jalhago
Conditional "if" — (면)
잘하면
chahl-hah-myuhn
jalhamyeon
Progressive (고 있어요)
잘하고 있어요
chahl-hah-goh ee-ssuh-yoh
jalhago isseoyo
Want to (고 싶어요)
잘하고 싶어요
chahl-hah-goh shee-puh-yoh
jalhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
잘할 수 있어요
chahl-hahl soo ee-ssuh-yoh
jalhal su isseoyo
Because / So (아/어서)
잘해서
chahl-hae-suh
jalhaeseo
Noun form — (기)
잘하기
chahl-hah-gee
jalhagi
Noun form — (음)
잘함
chahl-hahm
jalham