启事(Notice)
启事是一种公告性的通知，需要向公众说明什么事情，要求什么帮助都可以采用。把启事内容的要点作为标题写在启事的上方正中;启事的日期写在右上方;启事者名称在右下方;不用称呼语。如：
A Wallet Found
Sep.8，2003
A Wallet was found in the lecture hall,inside of it are money and cards.Loser is expected to come to the Office of the Department of Foreign Languages to identify it.
The Office of the Department
of Foreign Languages
书信(Letter)
书信的格式是：信头(发信人的地址和日期)，位于信纸的右上角;信内地址(收信人的地址，私人信件可省去)，位于信头下两行左边;称呼，位于信内地址下;正文，位于称呼下，缩进两个字符;署名，位于正文下两行右边;签名，位于结尾下。如：
No.4, Jianguo Rd, Shanghai
May 24th，2003
Dear Sister,
It has been half a year since you left home.I miss you very much.Luckily，I’ll come to Guangzhou to attend a meeting on May 10th.The meeting will last five days.I will come to see you during my staying in Guangzhou and we can have a good talk.
I’m looking forward to seeing you!
Yours，
Zhangli
