Verbseoul.
하다 verb
결합하다gyeolhaphadato unite

To say to unite politely in the present tense, use 결합해요 (gyuhl-hah-pae-yoh). Below is the full conjugation of 결합하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
결합해
gyuhl-hah-pae
결합해요
gyuhl-hah-pae-yoh
결합합니다
gyuhl-hah-pahm-nee-dah
Past
결합했어
gyuhl-hah-pae-ssuh
결합했어요
gyuhl-hah-pae-ssuh-yoh
결합했습니다
gyuhl-hah-pae-sseum-nee-dah
Future
결합할 거야
gyuhl-hah-pahl- -guh-yah
결합할 거예요
gyuhl-hah-pahl- -guh-yae-yoh
결합할 겁니다
gyuhl-hah-pahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
결합하세요
gyuhl-hah-pah-sae-yoh
Suggestion / Let's Polite (요)
결합해요
gyuhl-hah-pae-yoh
Question Polite (요)
결합해요?
gyuhl-hah-pae-yoh-?
Connective “and” — (고)
결합하고
gyuhl-hah-pah-goh
Conditional “if” — (면)
결합하면
gyuhl-hah-pah-myuhn
Noun form — (기)
결합함
gyuhl-hah-pahm