않았으나

In a sentence

• 그는 열심히 공부하지 않았으나 시험을 잘 봤다.

  He didn't study hard but he did well on the test.

  In this sentence, '않았으나' is used to contrast the action of not studying hard with the unexpected result of performing well on the test.

• 나는 그 계획을 찬성하지 않았으나 반대도 하지 않았다.

  I neither supported nor opposed the plan.

  Here, '않았으나' is utilized to indicate the lack of agreement, contrasting it with a neutral stance regarding opposition.

• 우리는 경기에 이기지 않았으나 모두 최선을 다했다.

  We didn't win the game but everyone tried their best.

  '않았으나' conveys contrast by highlighting the lack of victory against the positive outcome of maximum effort by everyone.