英语四级信件作文写作策略：
1.审清题目，了解这是什么文体，是个人信函还是公务信函，要看清楚要求。
2.思考称谓应该怎么写。
Dear …, (个人信函)
Dear Sir/Madam,(公务信函)
3.分为三段
第一段：写信目的
第二段：具体内容
第三段：表示感谢(或者歉意)
4.思考落款该怎么写。
Sincerely your,
XXXXXX
英语四级信件作文必杀句：
(一) 自我介绍
注：如果公务信函需要自我介绍，因为对方不认识写信人;如果是私人信函不需要自我介绍。
I am a univerity tudent majoring in environmental cience.
(二)写信目的：
1.I am writing thi letter for the purpoe of reigning from the current pot/poition.
2.I am writing to inform you that I wih to requet if you could find a potential beneficiary of Project Hope.
3.I am writing thi letter of my intention of withdrawing from my current poition.
4.I am writing thi letter in order to expre my incere gratitude to you.
(三)表示感谢：
1.My appreciation for you to your generou help i beyond word.
2.Word fail me when I wih to expre/how my incere gratitude to you. (感激之情，溢于言表)
3.I take thi opportunity to extend my heartfelt appreciation to the kind aid/aitance/help you give/offer/render me.由好作网www.hAOzuowEn.com整理
4.Thank you for your kindne/conideration.
(四)期待回复：
1.I look forward to hearing from you oon.
2.I am looking forward to your favorable reply at your earliet convenience.
3.Your prompt attention to my inquiry would be highly appreciated.
(五)表示歉意：
1.I apologize (in advance) for any trouble/inconvenience I will bring to you.
2.I apologize for any inconvenience I have brought to you
3.I am orry for any trouble I might bring to you.
附加：
Should you have any quetion, pleae contact me at the e-mail provided below: volunteer@ina.com.
如果你有任何问题，请联系以下邮箱。
例题1：
Write a letter to a friend of your to recommend one of your favorite book and give your reaon for your recommendation.
Dear Frank,
I am writing thi letter for the purpoe of recommending one of my favorite book erie to you, Harry Potter. Thi book erie conit of even book and they are all amazingly intriguing to reader.
The reaon for my recommendation are a follow. To being with, the book erie tell a tory of adventure about Harry potter and hi friend fighting againt the Dark Lord. It intend to tell u that love i powerful. Harry Potter i invincible becaue hi mother Lily tried to ave him by acr