Verbseoul.
하다 verb

개장하다 conjugation (gaejanghada, to open (a location, session, etc.))

To say to open (a location, session, etc.) politely in the present tense, use 개장해요 (gae-chahng-hae-yoh) · gaejanghaeyo. Below is the full conjugation of 개장하다 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
개장해
gae-chahng-hae
gaejanghae
개장해요
gae-chahng-hae-yoh
gaejanghaeyo
개장합니다
gae-chahng-hahm-nee-dah
gaejanghamnida
Past
개장했어
gae-chahng-hae-ssuh
gaejanghaesseo
개장했어요
gae-chahng-hae-ssuh-yoh
gaejanghaesseoyo
개장했습니다
gae-chahng-hae-sseum-nee-dah
gaejanghaesseumnida
Future
개장할 거야
gae-chahng-hahl guh-yah
gaejanghal geoya
개장할 거예요
gae-chahng-hahl guh-yae-yoh
gaejanghal geoyeyo
개장할 겁니다
gae-chahng-hahl guhm-nee-dah
gaejanghal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
개장하세요
gae-chahng-hah-sae-yoh
gaejanghaseyo
Suggestion / Let's Polite (요)
개장해요
gae-chahng-hae-yoh
gaejanghaeyo
Question Polite (요)
개장해요?
gae-chahng-hae-yoh-?
gaejanghaeyo?
Connective "and" — (고)
개장하고
gae-chahng-hah-goh
gaejanghago
Conditional "if" — (면)
개장하면
gae-chahng-hah-myuhn
gaejanghamyeon
Progressive (고 있어요)
개장하고 있어요
gae-chahng-hah-goh ee-ssuh-yoh
gaejanghago isseoyo
Want to (고 싶어요)
개장하고 싶어요
gae-chahng-hah-goh shee-puh-yoh
gaejanghago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
개장할 수 있어요
gae-chahng-hahl soo ee-ssuh-yoh
gaejanghal su isseoyo
Because / So (아/어서)
개장해서
gae-chahng-hae-suh
gaejanghaeseo
Noun form — (기)
개장하기
gae-chahng-hah-gee
gaejanghagi
Noun form — (음)
개장함
gae-chahng-hahm
gaejangham