1. 首段
   1. 问候
      1. How are you going？
   2. 自我介绍
      1. I am Lihua，a stuent from Wenzhou university.
   3. 写信目的
      1. 建议
         1. I am writing to give you some suggestions
      2. 邀请
         1. I am writing to invite you to……
      3. 通知
         1. I am writing to inform you of…
2. 第二段
   1. 建议信
      1. 建议一
         1. First of all/To begin with，it is +adj for sb to do sth. As we know，….
      2. 建议二
         1. What is more/Additionally/Besides,you are supposed to/had better do sth
      3. 建议三
         1. What is more /Besides /additionally,do sth(祈使句)，which can make /provide you …
   2. 邀请信
   3. 通知信
3. 尾段
   1. 表达祝愿/提醒/鼓励
      1. 建议信
         1. If you follow my advice,I am sure you will…..
      2. 通知信
         1. Do not forget to be on time. /Make sure….
      3. 祝愿
         1. I hope you will have a good time！I have the confidence that you will have a great time/pass the exam.
      4. 邀请信
         1. I would appreciate if you could accept my invitation./I will be grateful if you are willing to come/take part in.
   2. 套话凑字数
      1. If there anything that I can help，please don't hestitate to tell me.
   3. 期待回信
      1. I am looking forward to your early reply!