Verbseoul.
하다 verb
함께하다hamkkehadato be (with)

To say to be (with) politely in the present tense, use 함께해요 (hahm-ggae-hae-yoh). Below is the full conjugation of 함께하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
함께해
hahm-ggae-hae
함께해요
hahm-ggae-hae-yoh
함께합니다
hahm-ggae-hahm-nee-dah
Past
함께했어
hahm-ggae-hae-ssuh
함께했어요
hahm-ggae-hae-ssuh-yoh
함께했습니다
hahm-ggae-hae-sseum-nee-dah
Future
함께할 거야
hahm-ggae-hahl- -guh-yah
함께할 거예요
hahm-ggae-hahl- -guh-yae-yoh
함께할 겁니다
hahm-ggae-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
함께하세요
hahm-ggae-hah-sae-yoh
Suggestion / Let's Polite (요)
함께해요
hahm-ggae-hae-yoh
Question Polite (요)
함께해요?
hahm-ggae-hae-yoh-?
Connective “and” — (고)
함께하고
hahm-ggae-hah-goh
Conditional “if” — (면)
함께하면
hahm-ggae-hah-myuhn
Noun form — (기)
함께함
hahm-ggae-hahm