Make these sentences negative 1. There are tress and flowers in the playground 2. The boy in going down the slide 3. The girl is swinging on a swing 4. The dog is sitting on the see-saw

1. There are no trees and flowers in the playground. 2. The boy is not going down the slide. 3. The girl is not swinging on a swing. 4. The dog is not sitting on the see-saw.

Таким образом, негативные предложения образуются с помощью добавления отрицательной частички not / местоимения no после вспомогательного глагола.