Verbseoul.
하다 verb
검역하다geomyeokhadato quarantine

To say to quarantine politely in the present tense, use 검역해요 (guh-myuh-kae-yoh). Below is the full conjugation of 검역하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
검역해
guh-myuh-kae
검역해요
guh-myuh-kae-yoh
검역합니다
guh-myuh-kahm-nee-dah
Past
검역했어
guh-myuh-kae-ssuh
검역했어요
guh-myuh-kae-ssuh-yoh
검역했습니다
guh-myuh-kae-sseum-nee-dah
Future
검역할 거야
guh-myuh-kahl- -guh-yah
검역할 거예요
guh-myuh-kahl- -guh-yae-yoh
검역할 겁니다
guh-myuh-kahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
검역하세요
guh-myuh-kah-sae-yoh
Suggestion / Let's Polite (요)
검역해요
guh-myuh-kae-yoh
Question Polite (요)
검역해요?
guh-myuh-kae-yoh-?
Connective “and” — (고)
검역하고
guh-myuh-kah-goh
Conditional “if” — (면)
검역하면
guh-myuh-kah-myuhn
Noun form — (기)
검역함
guh-myuh-kahm