Verbseoul.
하다 verb

제조하다 conjugation (jejohada, to manufacture)

To say to manufacture politely in the present tense, use 제조해요 (chae-choh-hae-yoh) · jejohaeyo. Below is the full conjugation of 제조하다 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
제조해
chae-choh-hae
jejohae
제조해요
chae-choh-hae-yoh
jejohaeyo
제조합니다
chae-choh-hahm-nee-dah
jejohamnida
Past
제조했어
chae-choh-hae-ssuh
jejohaesseo
제조했어요
chae-choh-hae-ssuh-yoh
jejohaesseoyo
제조했습니다
chae-choh-hae-sseum-nee-dah
jejohaesseumnida
Future
제조할 거야
chae-choh-hahl guh-yah
jejohal geoya
제조할 거예요
chae-choh-hahl guh-yae-yoh
jejohal geoyeyo
제조할 겁니다
chae-choh-hahl guhm-nee-dah
jejohal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
제조하세요
chae-choh-hah-sae-yoh
jejohaseyo
Suggestion / Let's Polite (요)
제조해요
chae-choh-hae-yoh
jejohaeyo
Question Polite (요)
제조해요?
chae-choh-hae-yoh-?
jejohaeyo?
Connective "and" — (고)
제조하고
chae-choh-hah-goh
jejohago
Conditional "if" — (면)
제조하면
chae-choh-hah-myuhn
jejohamyeon
Progressive (고 있어요)
제조하고 있어요
chae-choh-hah-goh ee-ssuh-yoh
jejohago isseoyo
Want to (고 싶어요)
제조하고 싶어요
chae-choh-hah-goh shee-puh-yoh
jejohago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
제조할 수 있어요
chae-choh-hahl soo ee-ssuh-yoh
jejohal su isseoyo
Because / So (아/어서)
제조해서
chae-choh-hae-suh
jejohaeseo
Noun form — (기)
제조하기
chae-choh-hah-gee
jejohagi
Noun form — (음)
제조함
chae-choh-hahm
jejoham