I completely forgot her birthday, what with one thing and another.
因為忙得不可開交，我把她的生日忘得一干二凈。
We're getting up a party for her birthday.
我們正在籌備她的生日聚會。
Are you having a big do for your birthday?
你打算舉行大型生日宴會嗎？
What did you get for your birthday?
你收到什么生日禮物了？
The birthday card arrived three days late.
生日賀卡晚到了三天。