Translation of "Cheerfully" in Chinese

The blue bird is perched on a branch, singing cheerfully.

蓝色的鸟栖息在树枝上，兴致昂扬地唱着歌。

He tried to act cheerfully, but we all knew how sad he felt.

他试图表现得很愉快，但我们都知道他有多悲伤。