Verbseoul.
하다 verb
고하다gohadato inform, to tell

To say to inform, to tell politely in the present tense, use 고해요 (goh-hae-yoh). Below is the full conjugation of 고하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
고해
goh-hae
고해요
goh-hae-yoh
고합니다
goh-hahm-nee-dah
Past
고했어
goh-hae-ssuh
고했어요
goh-hae-ssuh-yoh
고했습니다
goh-hae-sseum-nee-dah
Future
고할 거야
goh-hahl- -guh-yah
고할 거예요
goh-hahl- -guh-yae-yoh
고할 겁니다
goh-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
고하세요
goh-hah-sae-yoh
Suggestion / Let's Polite (요)
고해요
goh-hae-yoh
Question Polite (요)
고해요?
goh-hae-yoh-?
Connective “and” — (고)
고하고
goh-hah-goh
Conditional “if” — (면)
고하면
goh-hah-myuhn
Noun form — (기)
고함
goh-hahm