生日快乐用英文怎么说大写字母

"HAPPY BIRTHDAY" is the commonly used Engpsh phrase to say "生日快乐".

The origin of this phrase is uncertain but it is commonly used to wish someone a happy birthday. It's a simple and straightforward way to express your good wishes to someone on their special day.

Examples:

"Happy birthday! Wishing you a day filled with joy and laughter."
(生日快乐！祝你一天充满快乐和欢笑。)

"Wishing you all the best on your birthday! Have a great day."
(祝你生日最好！玩得开心。)

"Sending birthday wishes your way for a fantastic year ahead."
(送你生日祝福，愿你未来一年更美好。)