名詞 birthday:

1. an anniversary of the day on which a person was born (or the celebration of it)
2. the date on which a person was born
   同義詞：natal day

1. I received a set of gardening tools on my birthday.
   生日那天，我收到一套園藝工具。
2. He gave her an expensive fur for her birthday.
   他送給她一件昂貴的毛皮衣服作生 日禮物。
3. I'm getting a new computer for birthday present.
   我得到一臺(tái)電腦作生日禮物。
4. I was eighteen on my last birthday.
   我已經(jīng)過了18周歲了。
5. Tom's birthday is this week.
   湯姆的生日就在這個(gè)星期。
6. Next Tuesday is his birthday.
   下周二是他的生日。
7. Next Monday will be my 21st birthday.
   下星期一是我二十一歲的生日。
8. Happy birthday to you!
   祝你生日快樂！

birth.day

n.（名詞）
The day of one`s birth.
生日：某人出生日期
The anniversary of one`s birth.
生日：某人出生日期的周年紀(jì)念日
n.attributive.（定語名詞）
Often used to modify another noun:
常用于修飾名詞：
例句：
a birthday cake; birthday parties.
生日蛋糕；生日聚會(huì)