Verbseoul.
하다 verb
적용하다jeokyonghadato apply

To say to apply politely in the present tense, use 적용해요 (chuh-gyohng-hae-yoh). Below is the full conjugation of 적용하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
적용해
chuh-gyohng-hae
적용해요
chuh-gyohng-hae-yoh
적용합니다
chuh-gyohng-hahm-nee-dah
Past
적용했어
chuh-gyohng-hae-ssuh
적용했어요
chuh-gyohng-hae-ssuh-yoh
적용했습니다
chuh-gyohng-hae-sseum-nee-dah
Future
적용할 거야
chuh-gyohng-hahl- -guh-yah
적용할 거예요
chuh-gyohng-hahl- -guh-yae-yoh
적용할 겁니다
chuh-gyohng-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
적용하세요
chuh-gyohng-hah-sae-yoh
Suggestion / Let's Polite (요)
적용해요
chuh-gyohng-hae-yoh
Question Polite (요)
적용해요?
chuh-gyohng-hae-yoh-?
Connective “and” — (고)
적용하고
chuh-gyohng-hah-goh
Conditional “if” — (면)
적용하면
chuh-gyohng-hah-myuhn
Noun form — (기)
적용함
chuh-gyohng-hahm