Verbseoul.
하다 verb
참가하다chamgahadato take part, to participate

To say to take part, to participate politely in the present tense, use 참가해요 (chahm-gah-hae-yoh). Below is the full conjugation of 참가하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
참가해
chahm-gah-hae
참가해요
chahm-gah-hae-yoh
참가합니다
chahm-gah-hahm-nee-dah
Past
참가했어
chahm-gah-hae-ssuh
참가했어요
chahm-gah-hae-ssuh-yoh
참가했습니다
chahm-gah-hae-sseum-nee-dah
Future
참가할 거야
chahm-gah-hahl- -guh-yah
참가할 거예요
chahm-gah-hahl- -guh-yae-yoh
참가할 겁니다
chahm-gah-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
참가하세요
chahm-gah-hah-sae-yoh
Suggestion / Let's Polite (요)
참가해요
chahm-gah-hae-yoh
Question Polite (요)
참가해요?
chahm-gah-hae-yoh-?
Connective “and” — (고)
참가하고
chahm-gah-hah-goh
Conditional “if” — (면)
참가하면
chahm-gah-hah-myuhn
Noun form — (기)
참가함
chahm-gah-hahm