Verbseoul.
하다 verb

변하다 conjugation (byeonhada, to change)

To say to change politely in the present tense, use 변해요 (byuhn-hae-yoh) · byeonhaeyo. Below is the full conjugation of 변하다 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
변해
byuhn-hae
byeonhae
변해요
byuhn-hae-yoh
byeonhaeyo
변합니다
byuhn-hahm-nee-dah
byeonhamnida
Past
변했어
byuhn-hae-ssuh
byeonhaesseo
변했어요
byuhn-hae-ssuh-yoh
byeonhaesseoyo
변했습니다
byuhn-hae-sseum-nee-dah
byeonhaesseumnida
Future
변할 거야
byuhn-hahl guh-yah
byeonhal geoya
변할 거예요
byuhn-hahl guh-yae-yoh
byeonhal geoyeyo
변할 겁니다
byuhn-hahl guhm-nee-dah
byeonhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
변하세요
byuhn-hah-sae-yoh
byeonhaseyo
Suggestion / Let's Polite (요)
변해요
byuhn-hae-yoh
byeonhaeyo
Question Polite (요)
변해요?
byuhn-hae-yoh-?
byeonhaeyo?
Connective "and" — (고)
변하고
byuhn-hah-goh
byeonhago
Conditional "if" — (면)
변하면
byuhn-hah-myuhn
byeonhamyeon
Progressive (고 있어요)
변하고 있어요
byuhn-hah-goh ee-ssuh-yoh
byeonhago isseoyo
Want to (고 싶어요)
변하고 싶어요
byuhn-hah-goh shee-puh-yoh
byeonhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
변할 수 있어요
byuhn-hahl soo ee-ssuh-yoh
byeonhal su isseoyo
Because / So (아/어서)
변해서
byuhn-hae-suh
byeonhaeseo
Noun form — (기)
변하기
byuhn-hah-gee
byeonhagi
Noun form — (음)
변함
byuhn-hahm
byeonham