Happy birthday！生日快乐
Happy Birthday Day To You！ 生日快乐！
I wish you a happy birthday. 祝你生日快乐。
The class all joined together to sing `Happy Birthday' to the teacher.全班一起为老师唱‘生日快乐’歌.
Have a very happy birthday! 祝你生日格外快乐！
A little birthday wish just to let know how much I care about you. 小小的生日祝福，略表我的心愿。
Have a wonderful birthday! 祝您生日快乐无比！
I offer my good wishes to Mr. Cai on his birthday. 时逢采先生华诞佳辰，谨以为贺。
Happy birthday. May gladness fill your every hour on this special day. 生日快乐！愿这特殊的日子里，你的每时每刻都充满欢乐。
I know very well that today is your birthday, and wish you all happiness, health. 今天是你的生日，祝你幸福，健康。
In honor of your moving out of the twenties, we are giving you a marvelous birthday party. 为庆祝你跨越二十岁，我们准备了一个盛大的生日宴会。
Warmest wishes that your birthday holds nothing but the best. The finest things in life today and every day! 热烈祝贺你的生日，愿生日中最美好的一切属于你！
Every day is birthday time when thinking of you, and I shall keep one sublime hoping your many dreams come true. 每当想到你我好似天天都在过生日， 可我特别珍视其中的一天， 祝愿你在这天美梦都能实现。
Let me join all your other friends in wishing you a happy birthday. Today specially belongs to you. Take this chance to enjoy yourself in everything you do. 让我与你的朋友们一道共庆你生日快乐，今天属于你，祝你欢欢喜喜！