못했고

못했고

"못했고" means "did not do well" or "could not do."

못했고 is used to express the negation of the ability or accomplishment of studying for the exam sufficiently.

나는 시험 공부를 충분히 못했고 시험에서 좋은 점수를 받지 못했어.

I didn't study enough for the exam and couldn't achieve a good score.

못했고 is utilized to indicate the inability to speak about or assure keeping the promises.

그는 약속을 지키겠다는 말을 못했고 결국 신뢰를 잃었다.

He couldn't say he would keep his promises and ended up losing trust.

못했고 is used here to signify not fully enjoying the walk despite favorable initial conditions.

우리는 날씨가 좋아 산책을 했지만 충분히 즐기진 못했고 금방 돌아왔어.

We went for a walk because the weather was nice, but couldn't enjoy it enough and came back quickly.