고립시켰다

In a sentence

• 그는 다른 사람들과 교류하지 않도록 자신을 고립시켰다.

  He isolated himself so as not to interact with others.

  In this sentence, '고립시켰다' is used to describe the act of someone isolating themselves purposefully, showing agency in bringing about the state of isolation.

• 정부의 정책은 특정 지역을 경제적으로 고립시켰다.

  The government's policies economically isolated a specific region.

  Here, '고립시켰다' conveys the action of causing isolation to a specific area through external decisions or actions, emphasizing a socioeconomic context.

• 공포없이 그는 고립된 사람들을 돕기 위해 나섰다.

  Fearlessly, he set out to help those who were isolated.

  In this example, '고립된' (a form related to '고립시켰다') is used in passive voice, showing the state of being isolated without agency attributed to the isolated person.