Verbseoul.
하다 verb

교사하다 conjugation (gyosahada, to instigate)

To say to instigate politely in the present tense, use 교사해요 (gyoh-sah-hae-yoh) · gyosahaeyo. Below is the full conjugation of 교사하다 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
교사해
gyoh-sah-hae
gyosahae
교사해요
gyoh-sah-hae-yoh
gyosahaeyo
교사합니다
gyoh-sah-hahm-nee-dah
gyosahamnida
Past
교사했어
gyoh-sah-hae-ssuh
gyosahaesseo
교사했어요
gyoh-sah-hae-ssuh-yoh
gyosahaesseoyo
교사했습니다
gyoh-sah-hae-sseum-nee-dah
gyosahaesseumnida
Future
교사할 거야
gyoh-sah-hahl guh-yah
gyosahal geoya
교사할 거예요
gyoh-sah-hahl guh-yae-yoh
gyosahal geoyeyo
교사할 겁니다
gyoh-sah-hahl guhm-nee-dah
gyosahal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
교사하세요
gyoh-sah-hah-sae-yoh
gyosahaseyo
Suggestion / Let's Polite (요)
교사해요
gyoh-sah-hae-yoh
gyosahaeyo
Question Polite (요)
교사해요?
gyoh-sah-hae-yoh-?
gyosahaeyo?
Connective "and" — (고)
교사하고
gyoh-sah-hah-goh
gyosahago
Conditional "if" — (면)
교사하면
gyoh-sah-hah-myuhn
gyosahamyeon
Progressive (고 있어요)
교사하고 있어요
gyoh-sah-hah-goh ee-ssuh-yoh
gyosahago isseoyo
Want to (고 싶어요)
교사하고 싶어요
gyoh-sah-hah-goh shee-puh-yoh
gyosahago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
교사할 수 있어요
gyoh-sah-hahl soo ee-ssuh-yoh
gyosahal su isseoyo
Because / So (아/어서)
교사해서
gyoh-sah-hae-suh
gyosahaeseo
Noun form — (기)
교사하기
gyoh-sah-hah-gee
gyosahagi
Noun form — (음)
교사함
gyoh-sah-hahm
gyosaham