一般書信的寫作格式：通常有信頭(Heading)、信內地址(Inside Address)、稱呼(Salutation)、正文(Body)、結束語(Closing)、簽名(Signature)等幾個部分組成。

Heading：發信人的地址(有時還包括電話號碼)和發信日期

Inside Address ：收信人的姓名(有時還包括頭銜)和地址

Body：1)陳述主要信息或信函的目的2)詳細陳述3)限制或限度(補充說明)4)總結

Closing：Best，Best regards,Sincerely,Sincerely yours,Truly yours,Respectfully,Respectfully yours,

感謝信開頭段常用句式和套話

I am writing to extend my sincere gratitude for...

I am writing to express my thanks for...

I am writing to show my sincere appreciation for...

I would like to convey in this letter my heartfelt thanks to you for...

I feel deeply indebted to you and I really don't know how to thank you enough for your help.

感謝信結尾段常用句式和套話

I must thank you again for your generous help.

I am most grateful for your selfless donation.

My true gratitude is beyond the word's deion.

I feel most obliged to thank you once more.

Please accept my gratitude, now and always.

道歉信具體寫作步驟：

首段：重述自己做錯的事，表示歉意。

主體段落：說明道歉的具體原因，應盡量詳細描述做錯事的經過。寫信時應該注意在申述理由時要照顧讀信人的感受，切忌強詞奪理。

結尾段：再次表明承認錯誤的態度，請求收信人的諒解。也可以提出補救的辦法。

投訴信

(1)開頭：自我介紹，交代投訴內容，表明本信的目的和要求。

(2)正文：說明情況，講清利害，分析利弊。告訴對方你因此受到的傷害或不便，提出解決問題的建議，表明希望如何處理。

(3)結尾：表達希望問題得到迅速恰當解決的強烈愿望，希望盡快得到滿意的答復。

投訴信經典句型歸納

(1)It is a great pity that we find there is something wrong with…

(2)Would you please let me know whether or not you can…as soon as possible?

(3)I hope that my problem will get your kind consideration.

(4)I am sure there are technical or manmade errors involved.

(5)l hope you can make an investigation into this matter as soon as possible.

(6)I hope I can get my refund as soon as possible.我希望能盡快收到退款。

(7)I am writing to make a complaint about…

(8)If it is not properly settled，I would ask you to give my money back, or I would complain to the concerned authorities.