Verbseoul.
하다 verb

추적하다 conjugation (chujeokhada, chase)

To say chase politely in the present tense, use 추적해요 (choo-chuh-kae-yoh) · chujeokaeyo. Below is the full conjugation of 추적하다 across the three tenses and three everyday speech levels.

Grammar note (하다 verb): 하다 verbs are formed with a Sino-Korean noun + 하다 (e.g. 공부하다 = study + do). 하다 conjugates irregularly: the ㅏ in 하 contracts with the -아/-어 suffix to give 해 (not *하어). Present polite: 해요; past polite: 했어요. The formal ending is 합니다 (not *하습니다). Most noun+하다 compounds follow this pattern uniformly. See all 하다 verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
추적해
choo-chuh-kae
chujeokae
추적해요
choo-chuh-kae-yoh
chujeokaeyo
추적합니다
choo-chuh-kahm-nee-dah
chujeokamnida
Past
추적했어
choo-chuh-kae-ssuh
chujeokaesseo
추적했어요
choo-chuh-kae-ssuh-yoh
chujeokaesseoyo
추적했습니다
choo-chuh-kae-sseum-nee-dah
chujeokaesseumnida
Future
추적할 거야
choo-chuh-kahl guh-yah
chujeokal geoya
추적할 거예요
choo-chuh-kahl guh-yae-yoh
chujeokal geoyeyo
추적할 겁니다
choo-chuh-kahl guhm-nee-dah
chujeokal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
추적하세요
choo-chuh-kah-sae-yoh
chujeokaseyo
Suggestion / Let's Polite (요)
추적해요
choo-chuh-kae-yoh
chujeokaeyo
Question Polite (요)
추적해요?
choo-chuh-kae-yoh-?
chujeokaeyo?
Connective "and" — (고)
추적하고
choo-chuh-kah-goh
chujeokago
Conditional "if" — (면)
추적하면
choo-chuh-kah-myuhn
chujeokamyeon
Progressive (고 있어요)
추적하고 있어요
choo-chuh-kah-goh ee-ssuh-yoh
chujeokago isseoyo
Want to (고 싶어요)
추적하고 싶어요
choo-chuh-kah-goh shee-puh-yoh
chujeokago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
추적할 수 있어요
choo-chuh-kahl soo ee-ssuh-yoh
chujeokal su isseoyo
Because / So (아/어서)
추적해서
choo-chuh-kae-suh
chujeokaeseo
Noun form — (기)
추적하기
choo-chuh-kah-gee
chujeokagi
Noun form — (음)
추적함
choo-chuh-kahm
chujeokam