翻译： 生日快乐，我为你唱着这首歌，是希望今天你会很快乐！

Happy birthday,I am sing the song for you that hope you will very happy today!

Happy Birthday, I sing this song for you in the hope that today you would be very happy! 顺便给你个网站 下次可以在那里面翻译 免费的http://www.hao123.com/ss/fy.htm

Happy Birthday , I are that you are singing this song , are to hope that you will be very happy today!