Verbseoul.
하다 verb
투자하다tujahadato invest

To say to invest politely in the present tense, use 투자해요 (too-chah-hae-yoh). Below is the full conjugation of 투자하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
투자해
too-chah-hae
투자해요
too-chah-hae-yoh
투자합니다
too-chah-hahm-nee-dah
Past
투자했어
too-chah-hae-ssuh
투자했어요
too-chah-hae-ssuh-yoh
투자했습니다
too-chah-hae-sseum-nee-dah
Future
투자할 거야
too-chah-hahl- -guh-yah
투자할 거예요
too-chah-hahl- -guh-yae-yoh
투자할 겁니다
too-chah-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
투자하세요
too-chah-hah-sae-yoh
Suggestion / Let's Polite (요)
투자해요
too-chah-hae-yoh
Question Polite (요)
투자해요?
too-chah-hae-yoh-?
Connective “and” — (고)
투자하고
too-chah-hah-goh
Conditional “if” — (면)
투자하면
too-chah-hah-myuhn
Noun form — (기)
투자함
too-chah-hahm