Verbseoul.
하다 verb

치료하다 conjugation (chiryohada, to treat)

To say to treat politely in the present tense, use 치료해요 (chee-ryoh-hae-yoh) · chiryohaeyo. Below is the full conjugation of 치료하다 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
치료해
chee-ryoh-hae
chiryohae
치료해요
chee-ryoh-hae-yoh
chiryohaeyo
치료합니다
chee-ryoh-hahm-nee-dah
chiryohamnida
Past
치료했어
chee-ryoh-hae-ssuh
chiryohaesseo
치료했어요
chee-ryoh-hae-ssuh-yoh
chiryohaesseoyo
치료했습니다
chee-ryoh-hae-sseum-nee-dah
chiryohaesseumnida
Future
치료할 거야
chee-ryoh-hahl guh-yah
chiryohal geoya
치료할 거예요
chee-ryoh-hahl guh-yae-yoh
chiryohal geoyeyo
치료할 겁니다
chee-ryoh-hahl guhm-nee-dah
chiryohal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
치료하세요
chee-ryoh-hah-sae-yoh
chiryohaseyo
Suggestion / Let's Polite (요)
치료해요
chee-ryoh-hae-yoh
chiryohaeyo
Question Polite (요)
치료해요?
chee-ryoh-hae-yoh-?
chiryohaeyo?
Connective "and" — (고)
치료하고
chee-ryoh-hah-goh
chiryohago
Conditional "if" — (면)
치료하면
chee-ryoh-hah-myuhn
chiryohamyeon
Progressive (고 있어요)
치료하고 있어요
chee-ryoh-hah-goh ee-ssuh-yoh
chiryohago isseoyo
Want to (고 싶어요)
치료하고 싶어요
chee-ryoh-hah-goh shee-puh-yoh
chiryohago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
치료할 수 있어요
chee-ryoh-hahl soo ee-ssuh-yoh
chiryohal su isseoyo
Because / So (아/어서)
치료해서
chee-ryoh-hae-suh
chiryohaeseo
Noun form — (기)
치료하기
chee-ryoh-hah-gee
chiryohagi
Noun form — (음)
치료함
chee-ryoh-hahm
chiryoham