걷다
= to walk
걸어가다
= to walk to some place
걸어갈 거예요?
= Are you going to walk?
진짜 거기까지 걸어갔어요?
= Did you really walk all the way up there?
걷는 거 좋아해요.
= I like walking.
제 남자친구는 저랑 걸어가면서 다른 여자를 쳐다봐요.
= My boyfriend looks at other girls while walking with me.