Verbseoul.
하다 verb

가세하다 conjugation (gasehada, to support, to side with)

To say to support, to side with politely in the present tense, use 가세해요 (gah-sae-hae-yoh) · gasehaeyo. Below is the full conjugation of 가세하다 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
가세해
gah-sae-hae
gasehae
가세해요
gah-sae-hae-yoh
gasehaeyo
가세합니다
gah-sae-hahm-nee-dah
gasehamnida
Past
가세했어
gah-sae-hae-ssuh
gasehaesseo
가세했어요
gah-sae-hae-ssuh-yoh
gasehaesseoyo
가세했습니다
gah-sae-hae-sseum-nee-dah
gasehaesseumnida
Future
가세할 거야
gah-sae-hahl guh-yah
gasehal geoya
가세할 거예요
gah-sae-hahl guh-yae-yoh
gasehal geoyeyo
가세할 겁니다
gah-sae-hahl guhm-nee-dah
gasehal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
가세하세요
gah-sae-hah-sae-yoh
gasehaseyo
Suggestion / Let's Polite (요)
가세해요
gah-sae-hae-yoh
gasehaeyo
Question Polite (요)
가세해요?
gah-sae-hae-yoh-?
gasehaeyo?
Connective "and" — (고)
가세하고
gah-sae-hah-goh
gasehago
Conditional "if" — (면)
가세하면
gah-sae-hah-myuhn
gasehamyeon
Progressive (고 있어요)
가세하고 있어요
gah-sae-hah-goh ee-ssuh-yoh
gasehago isseoyo
Want to (고 싶어요)
가세하고 싶어요
gah-sae-hah-goh shee-puh-yoh
gasehago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
가세할 수 있어요
gah-sae-hahl soo ee-ssuh-yoh
gasehal su isseoyo
Because / So (아/어서)
가세해서
gah-sae-hae-suh
gasehaeseo
Noun form — (기)
가세하기
gah-sae-hah-gee
gasehagi
Noun form — (음)
가세함
gah-sae-hahm
gaseham