투자해
too-chah-hae
tujahae
투자하다
To say to invest politely in the present tense, use 투자해요 (too-chah-hae-yoh) · tujahaeyo. Below is the full conjugation of 투자하다 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 | 투자해요 too-chah-hae-yoh tujahaeyo | 투자합니다 too-chah-hahm-nee-dah tujahamnida | |
| Past | 투자했어 too-chah-hae-ssuh tujahaesseo | 투자했어요 too-chah-hae-ssuh-yoh tujahaesseoyo | 투자했습니다 too-chah-hae-sseum-nee-dah tujahaesseumnida |
| Future | 투자할 거야 too-chah-hahl guh-yah tujahal geoya | 투자할 거예요 too-chah-hahl guh-yae-yoh tujahal geoyeyo | 투자할 겁니다 too-chah-hahl guhm-nee-dah tujahal geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
투자하세요
too-chah-hah-sae-yoh
tujahaseyo
Suggestion / Let's Polite (요)
투자해요
too-chah-hae-yoh
tujahaeyo
Question Polite (요)
투자해요?
too-chah-hae-yoh-?
tujahaeyo?
Connective "and" — (고)
투자하고
too-chah-hah-goh
tujahago
Conditional "if" — (면)
투자하면
too-chah-hah-myuhn
tujahamyeon
Progressive (고 있어요)
투자하고 있어요
too-chah-hah-goh ee-ssuh-yoh
tujahago isseoyo
Want to (고 싶어요)
투자하고 싶어요
too-chah-hah-goh shee-puh-yoh
tujahago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
투자할 수 있어요
too-chah-hahl soo ee-ssuh-yoh
tujahal su isseoyo
Because / So (아/어서)
투자해서
too-chah-hae-suh
tujahaeseo
Noun form — (기)
투자하기
too-chah-hah-gee
tujahagi
Noun form — (음)
투자함
too-chah-hahm
tujaham