Verbseoul.
하다 verb
식사하다siksahadato eat, to have/take a meal

To say to eat, to have/take a meal politely in the present tense, use 식사해요 (sheeg-ssah-hae-yoh). Below is the full conjugation of 식사하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
식사해
sheeg-ssah-hae
식사해요
sheeg-ssah-hae-yoh
식사합니다
sheeg-ssah-hahm-nee-dah
Past
식사했어
sheeg-ssah-hae-ssuh
식사했어요
sheeg-ssah-hae-ssuh-yoh
식사했습니다
sheeg-ssah-hae-sseum-nee-dah
Future
식사할 거야
sheeg-ssah-hahl- -guh-yah
식사할 거예요
sheeg-ssah-hahl- -guh-yae-yoh
식사할 겁니다
sheeg-ssah-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
식사하세요
sheeg-ssah-hah-sae-yoh
Suggestion / Let's Polite (요)
식사해요
sheeg-ssah-hae-yoh
Question Polite (요)
식사해요?
sheeg-ssah-hae-yoh-?
Connective “and” — (고)
식사하고
sheeg-ssah-hah-goh
Conditional “if” — (면)
식사하면
sheeg-ssah-hah-myuhn
Noun form — (기)
식사함
sheeg-ssah-hahm