Verbseoul.
regular
바꾸다bakkudato change [something]

To say to change [something] politely in the present tense, use 바꿔요 (bah-ggwuh-yoh). Below is the full conjugation of 바꾸다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
바꿔
bah-ggwuh
바꿔요
bah-ggwuh-yoh
바꿉니다
bah-ggoom-nee-dah
Past
바꿨어
bah-ggwuh-ssuh
바꿨어요
bah-ggwuh-ssuh-yoh
바꿨습니다
bah-ggwuh-sseum-nee-dah
Future
바꿀 거야
bah-ggool- -guh-yah
바꿀 거예요
bah-ggool- -guh-yae-yoh
바꿀 겁니다
bah-ggool- -guhm-nee-dah

Other useful forms

Command Polite (세요)
바꾸세요
bah-ggoo-sae-yoh
Suggestion / Let's Polite (요)
바꿔요
bah-ggwuh-yoh
Question Polite (요)
바꿔요?
bah-ggwuh-yoh-?
Connective “and” — (고)
바꾸고
bah-ggoo-goh
Conditional “if” — (면)
바꾸면
bah-ggoo-myuhn
Noun form — (기)
바꿈
bah-ggoom