V-기로 결정했다
This pattern means “decided to do.” Attach -기로 결정했다 to a verb stem when talking about a firm decision or plan. It is very reusable for school, work, and everyday choices. Example: 수민이는 태양열 발전기를 만들기로 결정했다. / Sumin decided to make a solar-powered generator.
수민이는 태양열 발전기를 만들기로 결정했다.
Sumin decided to make a solar-powered generator.
