jjunggeut seoda
to prick up
se redresser
jjunggeut seoyo
I stand up
jjunggeut seomnida
jjunggeut seosseoyo
I stood up
jjunggeut seotseumnida
jjunggeut seol geoyeyo
I will stand up
jjunggeut seol geosimnida
그는 귀를 쭝긋 세우고 소리를 들었다.
geuneun gwireul jjunggeut seuihgo sorireul deureotda.
He pricked up his ears to listen to the sound.