것임을

In a sentence

• 이것이 중요한 사실인 것은 정말 맞는 것임을 명심하세요.

  Please remember that this is indeed an important fact.

  Here, '것임을' underscores the certainty that the preceding statement is an actual, important fact.

• 그가 성공했다는 것은 그의 노력이 있었기 때문인 것임을 이해할 수 있습니다.

  One can understand that his success is due to his effort.

  In this case, '것임을' connects the cause-effect reasoning, emphasizing the truth of the statement.

• 모든 일이 잘 될 거라는 믿음이 성공의 열쇠인 것임을 깨달았습니다.

  I realized that the belief in things going well is the key to success.

  Here, '것임을' highlights the significance of the belief as an established fact.