1. 表示某人多少歲“生日”，要用序數(shù)詞而不用基數(shù)詞。如：

Today is my grandfather’s sixtieth birthday. 今天是我爺爺?shù)牧髩邸?/p>

2. 注意以下與動詞的常用習慣搭配：

celebrate one’s birthday 慶祝生日

observe [keep] a birthday 過生日

complete one’s 30th birithday 滿30歲

3. 通常用于祝賀生日的用語。如：

Happy birithday to you. 祝你生日快樂。

Many happy returns of your birthday. 祝您長壽。

Many happy returns of the day. 祝您長壽。