Verbseoul.
하다 verb
한잔하다hanjanhadato have a drink

To say to have a drink politely in the present tense, use 한잔해요 (hahn-chahn-hae-yoh). Below is the full conjugation of 한잔하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
한잔해
hahn-chahn-hae
한잔해요
hahn-chahn-hae-yoh
한잔합니다
hahn-chahn-hahm-nee-dah
Past
한잔했어
hahn-chahn-hae-ssuh
한잔했어요
hahn-chahn-hae-ssuh-yoh
한잔했습니다
hahn-chahn-hae-sseum-nee-dah
Future
한잔할 거야
hahn-chahn-hahl- -guh-yah
한잔할 거예요
hahn-chahn-hahl- -guh-yae-yoh
한잔할 겁니다
hahn-chahn-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
한잔하세요
hahn-chahn-hah-sae-yoh
Suggestion / Let's Polite (요)
한잔해요
hahn-chahn-hae-yoh
Question Polite (요)
한잔해요?
hahn-chahn-hae-yoh-?
Connective “and” — (고)
한잔하고
hahn-chahn-hah-goh
Conditional “if” — (면)
한잔하면
hahn-chahn-hah-myuhn
Noun form — (기)
한잔함
hahn-chahn-hahm