개시해
gae-shee-hae
gaesihae
개시하다
To say to start politely in the present tense, use 개시해요 (gae-shee-hae-yoh) · gaesihaeyo. Below is the full conjugation of 개시하다 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 | 개시해요 gae-shee-hae-yoh gaesihaeyo | 개시합니다 gae-shee-hahm-nee-dah gaesihamnida | |
| Past | 개시했어 gae-shee-hae-ssuh gaesihaesseo | 개시했어요 gae-shee-hae-ssuh-yoh gaesihaesseoyo | 개시했습니다 gae-shee-hae-sseum-nee-dah gaesihaesseumnida |
| Future | 개시할 거야 gae-shee-hahl guh-yah gaesihal geoya | 개시할 거예요 gae-shee-hahl guh-yae-yoh gaesihal geoyeyo | 개시할 겁니다 gae-shee-hahl guhm-nee-dah gaesihal geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
개시하세요
gae-shee-hah-sae-yoh
gaesihaseyo
Suggestion / Let's Polite (요)
개시해요
gae-shee-hae-yoh
gaesihaeyo
Question Polite (요)
개시해요?
gae-shee-hae-yoh-?
gaesihaeyo?
Connective "and" — (고)
개시하고
gae-shee-hah-goh
gaesihago
Conditional "if" — (면)
개시하면
gae-shee-hah-myuhn
gaesihamyeon
Progressive (고 있어요)
개시하고 있어요
gae-shee-hah-goh ee-ssuh-yoh
gaesihago isseoyo
Want to (고 싶어요)
개시하고 싶어요
gae-shee-hah-goh shee-puh-yoh
gaesihago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
개시할 수 있어요
gae-shee-hahl soo ee-ssuh-yoh
gaesihal su isseoyo
Because / So (아/어서)
개시해서
gae-shee-hae-suh
gaesihaeseo
Noun form — (기)
개시하기
gae-shee-hah-gee
gaesihagi
Noun form — (음)
개시함
gae-shee-hahm
gaesiham