Conjugated form of연구하다

연구했다

VerbPastFormal

yeonguhaetda

to research

rechercher ; étudier

Conjugation

Casual반말 — between close friends

Polite해요체 — standard politeness

Formal합쇼체 — very formal

	Casual	Polite	Formal
Present	연구해요 yeonguhaeyo I research	—	연구합니다 yeonguhamnida I research
Past	연구했어요 yeonguhaesseoyo I researched	—	연구했다 yeonguhaetda I researched
Future	연구할 거예요 yeonguhal geoyeyo I will research	—	연구할 것이다 yeonguhal geosida I will research

Casual

Polite

Formal

Present

yeonguhaeyo

I research

—

yeonguhamnida

I research

Past