Dear tom,
Happy birthday to you,my dearest friend!If i am not mistake ,the day after tomorrow will be you birthday.I remember it as clearly as i remember that what a big help you have give me for the last three year.You are the most kind person i have ever known.Iive our friendship forever!
Yours,
lihua
大体格式是这样的,如果想扩充,可多加几句回忆的话,对对方现在生活的关心等等即可