生日快乐英文怎么写

"Happy Birthday" 是最常见且直截了当的方式来表达生日快乐，这是一种非正式的，但非常普遍的祝福方式，适用于大多数情况，如果你想要一种更个性化的祝福方式，你可以考虑以下几种：

1、"Wishing you a day filled with happiness and laughter, just like you bring to those around you. Happy Birthday!"

2、"may your birthday be as special as you are. Enjoy your day to the fullest!"

3、"On this wonderful day, I want to wish you all the love and joy that you bring to the world. Happy Birthday!"

4、"Today is a day to celebrate the amazing person that you are. Wishing you a very happy birthday!"

都是一些简单直接的方式来表达生日快乐，你可以根据具体情况选择最合适的方式。