When to use to major in in Korean
Korean: 전공하다[ jeon-gong-ha-da ]

When to use it
The verb "to major in" means to study one main subject at college or university. In Korean, this is 전공하다. You use it to talk about what subject someone studies, like music, history, or biology.
Example sentences
저는 대학에서 영어를 전공해요.
I major in English at university.
언니는 음악을 전공해요.
My older sister majors in music.
민수는 역사학을 전공하고 싶어요.
Minsu wants to major in history.
제 친구는 서울에서 경영학을 전공해요.
My friend majors in business in Seoul.
너는 대학에서 무엇을 전공해요?
What do you major in at university?
저는 과학을 전공하지만 미술도 좋아해요.
I major in science, but I also like art.