Verbseoul.
하다 verb

증진하다 conjugation (jeungjinhada, to promote)

To say to promote politely in the present tense, use 증진해요 (cheung-cheen-hae-yoh) · jeungjinhaeyo. Below is the full conjugation of 증진하다 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

TenseCasual (반말)Polite (요)Formal (합니다)
Present
증진해
cheung-cheen-hae
jeungjinhae
증진해요
cheung-cheen-hae-yoh
jeungjinhaeyo
증진합니다
cheung-cheen-hahm-nee-dah
jeungjinhamnida
Past
증진했어
cheung-cheen-hae-ssuh
jeungjinhaesseo
증진했어요
cheung-cheen-hae-ssuh-yoh
jeungjinhaesseoyo
증진했습니다
cheung-cheen-hae-sseum-nee-dah
jeungjinhaesseumnida
Future
증진할 거야
cheung-cheen-hahl guh-yah
jeungjinhal geoya
증진할 거예요
cheung-cheen-hahl guh-yae-yoh
jeungjinhal geoyeyo
증진할 겁니다
cheung-cheen-hahl guhm-nee-dah
jeungjinhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
증진하세요
cheung-cheen-hah-sae-yoh
jeungjinhaseyo
Suggestion / Let's Polite (요)
증진해요
cheung-cheen-hae-yoh
jeungjinhaeyo
Question Polite (요)
증진해요?
cheung-cheen-hae-yoh-?
jeungjinhaeyo?
Connective "and" — (고)
증진하고
cheung-cheen-hah-goh
jeungjinhago
Conditional "if" — (면)
증진하면
cheung-cheen-hah-myuhn
jeungjinhamyeon
Progressive (고 있어요)
증진하고 있어요
cheung-cheen-hah-goh ee-ssuh-yoh
jeungjinhago isseoyo
Want to (고 싶어요)
증진하고 싶어요
cheung-cheen-hah-goh shee-puh-yoh
jeungjinhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
증진할 수 있어요
cheung-cheen-hahl soo ee-ssuh-yoh
jeungjinhal su isseoyo
Because / So (아/어서)
증진해서
cheung-cheen-hae-suh
jeungjinhaeseo
Noun form — (기)
증진하기
cheung-cheen-hah-gee
jeungjinhagi
Noun form — (음)
증진함
cheung-cheen-hahm
jeungjinham