Verbseoul.
하다 verb
세탁하다setakhadato do the laundry

To say to do the laundry politely in the present tense, use 세탁해요 (sae-tah-kae-yoh). Below is the full conjugation of 세탁하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
세탁해
sae-tah-kae
세탁해요
sae-tah-kae-yoh
세탁합니다
sae-tah-kahm-nee-dah
Past
세탁했어
sae-tah-kae-ssuh
세탁했어요
sae-tah-kae-ssuh-yoh
세탁했습니다
sae-tah-kae-sseum-nee-dah
Future
세탁할 거야
sae-tah-kahl- -guh-yah
세탁할 거예요
sae-tah-kahl- -guh-yae-yoh
세탁할 겁니다
sae-tah-kahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
세탁하세요
sae-tah-kah-sae-yoh
Suggestion / Let's Polite (요)
세탁해요
sae-tah-kae-yoh
Question Polite (요)
세탁해요?
sae-tah-kae-yoh-?
Connective “and” — (고)
세탁하고
sae-tah-kah-goh
Conditional “if” — (면)
세탁하면
sae-tah-kah-myuhn
Noun form — (기)
세탁함
sae-tah-kahm