조사해
choh-sah-hae
josahae
조사하다
To say to investigate, to examine politely in the present tense, use 조사해요 (choh-sah-hae-yoh) · josahaeyo. Below is the full conjugation of 조사하다 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
| Tense | Casual (반말) | Polite (요) | Formal (합니다) |
|---|---|---|---|
| Present | 조사해요 choh-sah-hae-yoh josahaeyo | 조사합니다 choh-sah-hahm-nee-dah josahamnida | |
| Past | 조사했어 choh-sah-hae-ssuh josahaesseo | 조사했어요 choh-sah-hae-ssuh-yoh josahaesseoyo | 조사했습니다 choh-sah-hae-sseum-nee-dah josahaesseumnida |
| Future | 조사할 거야 choh-sah-hahl guh-yah josahal geoya | 조사할 거예요 choh-sah-hahl guh-yae-yoh josahal geoyeyo | 조사할 겁니다 choh-sah-hahl guhm-nee-dah josahal geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
조사하세요
choh-sah-hah-sae-yoh
josahaseyo
Suggestion / Let's Polite (요)
조사해요
choh-sah-hae-yoh
josahaeyo
Question Polite (요)
조사해요?
choh-sah-hae-yoh-?
josahaeyo?
Connective "and" — (고)
조사하고
choh-sah-hah-goh
josahago
Conditional "if" — (면)
조사하면
choh-sah-hah-myuhn
josahamyeon
Progressive (고 있어요)
조사하고 있어요
choh-sah-hah-goh ee-ssuh-yoh
josahago isseoyo
Want to (고 싶어요)
조사하고 싶어요
choh-sah-hah-goh shee-puh-yoh
josahago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
조사할 수 있어요
choh-sah-hahl soo ee-ssuh-yoh
josahal su isseoyo
Because / So (아/어서)
조사해서
choh-sah-hae-suh
josahaeseo
Noun form — (기)
조사하기
choh-sah-hah-gee
josahagi
Noun form — (음)
조사함
choh-sah-hahm
josaham