書信是相隔較遠，暫時見不到面的人們相互交流情感與思想的工具。書信擁有悠久的歷史且世界各國的人們都有使用。下面是小編整理的商業英語書信的格式，歡迎來參考！

　　(一) 每一段的第一行都從左邊空白邊緣往右縮進3——5個字母的位置;

　　段落之間要空1——2行。

　　信1

　　messrs。 william & sons

　　58 lancastor house

　　manchester， england

　　march 20， 1999

　　our ref。 no。

　　your ref。 no。

　　the national transport co。

　　120 broadway street

　　rangoon， burma

　　dear sirs，

　　re: lab instruments

　　your firm has been recommended to us by messrs。 charles evans ltd。， birmingham， with whom we have done some business for the past two years。

　　we are thinking of getting a supply of instruments。 please furnish us with a catalogue， price list and brochure， if available。

　　we are looking forward to your early reply。

　　yours faithfully，

　　(二)齊頭式或平頭式(block style)

　　齊頭式信函的特點：

　　每一行，包括日期和簽名等都從左邊開始，每行取齊，成一垂直線。

　　信2

　　el mar trading company來

　　16 main street

　　fresno， california

　　u。s。a

　　tel:123456

　　cable address: elmar fresno

　　8 january，1999

　　gentlemen，

　　we thank you for your letter of january 1。 as requested， we enclose the catalogues for your reference。

　　we would be very glad to offer any further assistance。 please contact us if you need any additional information。

　　yours sincerely

　　encl。 : as stated

　　(三)混合式 ( semiblock style with indented paragraphs)

　　混合式信函的特點:

　　1) 正文的每一段落的第一行采用縮行式;

　　2)除信頭和日期外，其他部分采用齊頭式。

　　信3

　　office of the attorney

　　aaa company

　　123 main street

　　centerville， il666

　　u。 s。 a。

　　april 21， 1999

　　president， billboard inc。

　　999 broadway

　　metropolis， ny2222

　　dear sir:

　　we value your long-term relationship with us。

　　a review of your account shows that some time has passed since you last made payment to us。 if there is some difficulty you are facing that is causing this， we would like the opportunity of working matters out with you。 if there is the result of oversight， we would appreciate early remittance。

　　we look forward to hearing from you in the near future。