生日快乐英语表达为“happy birthday”，其英式读音为：[ˈhæpi ˈbɜːθdeɪ]，美式读音为：[ˈhæpi ˈbɜːrθdeɪ]。例句：The cake had 'Happy Birthday' piped on it. 蛋糕上裱了“生日快乐”的字样。
一、happy birthday 读音
英式读音：[ˈhæpi ˈbɜːθdeɪ]
美式读音：[ˈhæpi ˈbɜːrθdeɪ]
二、happy birthday 词性及释义
（n.）：生日快乐等含义；
三、happy birthday 双语例句
例句 1. We all crowded into her office to sing 'Happy Birthday'.
我们全都涌进她的办公室，唱“祝你生日快乐”。
例句 2. The whole class all joined together to sing happy birthday to the teacher.
全班学生一起对着老师唱起了《生日快乐》歌。
例句 3. Do you know that the "Happy Birthday to You" song is the first song sung in outer space?
你知道"祝你生日快乐"这首歌是第一首在外太空被唱响的歌吗？
例句 4. In those days people sent birthday cards when they couldn't wish somebody a happy birthday in person ．
那时候，当人们不能亲自祝某人生日快乐时，他们就会寄生日贺卡。
例句 5. The cake had 'Happy Birthday' piped on it.
蛋糕上裱了“生日快乐”的字样。
例句 6. Happy birthday and many happy returns of the day, old man.
祝你生日快乐，年年有今日，岁岁有今朝，老兄。
