Birthdays are a time to sit back and reflect upon how much older you are. (来源：专业英语学习网站 http://www.EnglishCN.com)
You may be older, but are you any wiser?
You should feel lucky. Dogs age seven years every time we age one.
I got you this card to remind you of your birthday. Happy birthday.
You are 21. That is something to be proud of.
Let me ask you this: Would you like to be a kid again?
Why don't we get together after work for a little party?
Just think how wise you are now.
We are going out and there is no getting out of it. How else are we going to spend your birthday money?
We all think that you are the greatest.