1.生日的英语:birthday,英 [ˈbɜːθdeɪ] 美 [ˈbɜːrθdeɪ]。
2.蛋糕上裱了“生日快乐”的字样。The cake had Happy Birthday piped on it.
3.要是他忘了你的生日,那可太差劲了。Its a poor show if he forgets your birthday.