들어갔으며

In a sentence

• 그녀는 방에 조용히 들어갔으며 아무 말도 하지 않았습니다.

  She quietly entered the room and said nothing.

  '들어갔으며' is used here to indicate that she entered the room followed by another action, not speaking.

• 그는 회사의 새로운 프로젝트에 정식으로 들어갔으며 큰 기여를 하고 있습니다.

  He officially joined the company's new project and is making significant contributions.

  Here, '들어갔으며' demonstrates that he joined the project and additionally is contributing greatly.

• 우리는 계획을 잘 검토하지 않고 일을 시작하는 오류에 들어갔으며 결국 많은 문제를 겪었습니다.

  We fell into the error of starting work without thoroughly reviewing the plan and ultimately faced many issues.

  '들어갔으며' describes entering a problematic state followed by its consequences, showing sequential or additive narrative.