Verbseoul.
하다 verb

함께하다 conjugation (hamkkehada, to be (with))

To say to be (with) politely in the present tense, use 함께해요 (hahm-ggae-hae-yoh) · hamkkehaeyo. Below is the full conjugation of 함께하다 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
함께해
hahm-ggae-hae
hamkkehae
함께해요
hahm-ggae-hae-yoh
hamkkehaeyo
함께합니다
hahm-ggae-hahm-nee-dah
hamkkehamnida
Past
함께했어
hahm-ggae-hae-ssuh
hamkkehaesseo
함께했어요
hahm-ggae-hae-ssuh-yoh
hamkkehaesseoyo
함께했습니다
hahm-ggae-hae-sseum-nee-dah
hamkkehaesseumnida
Future
함께할 거야
hahm-ggae-hahl guh-yah
hamkkehal geoya
함께할 거예요
hahm-ggae-hahl guh-yae-yoh
hamkkehal geoyeyo
함께할 겁니다
hahm-ggae-hahl guhm-nee-dah
hamkkehal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
함께하세요
hahm-ggae-hah-sae-yoh
hamkkehaseyo
Suggestion / Let's Polite (요)
함께해요
hahm-ggae-hae-yoh
hamkkehaeyo
Question Polite (요)
함께해요?
hahm-ggae-hae-yoh-?
hamkkehaeyo?
Connective "and" — (고)
함께하고
hahm-ggae-hah-goh
hamkkehago
Conditional "if" — (면)
함께하면
hahm-ggae-hah-myuhn
hamkkehamyeon
Progressive (고 있어요)
함께하고 있어요
hahm-ggae-hah-goh ee-ssuh-yoh
hamkkehago isseoyo
Want to (고 싶어요)
함께하고 싶어요
hahm-ggae-hah-goh shee-puh-yoh
hamkkehago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
함께할 수 있어요
hahm-ggae-hahl soo ee-ssuh-yoh
hamkkehal su isseoyo
Because / So (아/어서)
함께해서
hahm-ggae-hae-suh
hamkkehaeseo
Noun form — (기)
함께하기
hahm-ggae-hah-gee
hamkkehagi
Noun form — (음)
함께함
hahm-ggae-hahm
hamkkeham