“欢乐地”的英语可以翻译为：convivially，gaily ...

她过去经常每天早上欢乐地歌唱.She used to carol cheerfully every morning.他欢乐地纵声大笑.He laughed loud and merrily.人人都可以象小鸟和蜜蜂那样平静而欢乐地生活.Every man can get his living peacefully and sportively as the birds and bees....