Verbseoul.
하다 verb
행하다haenghadato do

To say to do politely in the present tense, use 행해요 (haeng-hae-yoh). Below is the full conjugation of 행하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
행해
haeng-hae
행해요
haeng-hae-yoh
행합니다
haeng-hahm-nee-dah
Past
행했어
haeng-hae-ssuh
행했어요
haeng-hae-ssuh-yoh
행했습니다
haeng-hae-sseum-nee-dah
Future
행할 거야
haeng-hahl- -guh-yah
행할 거예요
haeng-hahl- -guh-yae-yoh
행할 겁니다
haeng-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
행하세요
haeng-hah-sae-yoh
Suggestion / Let's Polite (요)
행해요
haeng-hae-yoh
Question Polite (요)
행해요?
haeng-hae-yoh-?
Connective “and” — (고)
행하고
haeng-hah-goh
Conditional “if” — (면)
행하면
haeng-hah-myuhn
Noun form — (기)
행함
haeng-hahm