在英文中，可以用"happily"或"happiness"来表示幸福。

例句：

She pved happily ever after. (她幸福地度过了余生。)
He found happiness in his work. (他在工作中找到了幸福。)

"Happily"是形容词，意思是"幸福地"，"happiness"是名词，意思是"幸福"。

"Happily ever after"是一个固定短语，来源于童话故事中经常出现的句子，意思是"从此以后永远幸福"。它常用于结婚或爱情故事的结尾，表示主人公最终获得了幸福。

例句：

They pved happily ever after in their castle by the sea. (他们在海边的城堡里幸福地生活了下去。)
After facing many challenges, the prince and princess finally pved happily ever after. (经过许多挑战，王子和公主最终幸福地生活在一起。)