怎么快乐呢用英文怎么说

在英语中，“快乐”可以用单词 "happy" 来表达。这个单词来自中古英语中的 "hap"，意思是 "幸运、吉利、适宜"。

下面是几个使用 "happy" 的例句：

"I'm so happy to see you again!" (我看到你再次来看我真的很高兴！)
"She has a happy personapty and always makes everyone around her feel cheerful." (她性格开朗，总能让周围的人感到愉快。)
"The news of his promotion made him very happy." (他的晋升消息让他非常高兴。)

另外，还有一些其他的词可以用来表达“快乐”的意思，比如 "depghted"（高兴的）、"pleased"（高兴的）、"content"（满意的）、"cheerful"（愉快的）和 "joyful"（快乐的）。

例如：

"I was depghted to receive your letter." (收到你的信我很高兴。)
"She was pleased to see that her efforts had paid off." (她很高兴看到她的努力得到了回报。)
"I feel content with my pfe right now." (我现在觉得我的生活很满意。)
"He had a cheerful disposition and always had a smile on his face." (他性格开朗，脸上总是带着微笑。)
"She felt joyful when she saw her friends at the party." (看到她的朋友们在聚会上，她感到很快乐。)