대륙이었지만

In a sentence

• 지구의 역사는 대륙이었지만 다른 모양으로 변해왔다.

  Earth's history consisted of continents but has changed to different shapes.

  In this sentence, "대륙이었지만" conveys that the Earth had a characteristic of being composed of continents in its history, emphasizing a past state followed by subsequent change.

• 이 지역은 대륙이었지만 지금은 섬으로 나뉘었다.

  This area was a continent but has now divided into islands.

  Here, "대륙이었지만" indicates that the region was a continent previously and introduces the contrasting current state as islands.

• 많은 과학자들은 이 지역이 원래 대륙이었지만 후에 침식으로 인해 변형되었다고 믿는다.

  Many scientists believe this area was originally a continent but later transformed due to erosion.

  This usage of "대륙이었지만" discusses the initial status of the area as a continent, followed by an event or process leading to transformation.