商務英語寫作中，商務信函是必須要掌握的。商業信函有其自身的特點，下面是商務書信寫作中的幾點注意事項：
1.切忌主客不分或模糊。例子： Deciding to rescind the earlier estimate,our report was updated to include $40,000 for new equipment.應改為 Deciding to rescind our earlier estimate,we have updated our report to include $40,000 for new equipment. (We決定呀，不是report.)
2.句子不要零碎。
例子： He decided not to audit the last ten contracts. Because of our previous objections about compliance. 兩個句子應該連在一起：He decided not to audit the last ten contracts because of our previous objections about compliance.
3.結構對稱，令人容易理解。例子： The owner questioned the occupant's lease intentions and the fact that the contract had been altered with ink markings. 應改為： The owner questioned the occupant's lease intentions and ink alterations of the contract.
4.單複數不要搞亂，不然會好刺眼，看著不舒服。例如： An authorized person must show that they have security clearance. 應改為 Authorized persons must show that they have security clearance.
5.動詞和主語要呼應。想想這兩個句子的分別： 1. This is one of the public-relations functions that is under-budgeted. 2. This is one of the public-relations functions,which are under-budgeted.
6.時態和語氣不要轉換太多。看商務英語已經是苦事，不要浪費人家的精力啊。
7.標點要準確。例如： He did not make repairs,however,he continued to monitor the equipment. 應改為： He did not make repairs; however,he continued to monitor the equipment.
8.選詞正確。像affect和effect，operative和operational等等就要弄清楚才好用啦。
9.拼字正確。有電腦拼字檢查功能後，就更加不能偷懶。
10.大小寫要注意。除非必要不要整個詞都大寫，除非要罵人。例如： MUST change to OS immediately. 外國人就覺得不禮貌和喝令人一樣。要強調的話，用底線，斜字，粗體就可以了。
拓展閱讀：外貿業務的英文書信範文
1.請求建立商業關係
Rogers Chemical Supply Co. 10E.22Street Omaha8,Neb Gentlemen: We have obtained your name and address from Aristo Shoes, Milan , and we are writing to enquire whether you would be willing to establish business relations with us. We have been importers of shoes for many years. At present, We are interested in extending our, range and would appreciate your catalogues and your prices are competitive we would expect to transact a significant volume of business. We look forward to your early reply.
Very truly yours 自米蘭職權里斯託鞋類公司取得貴公司和地址，特此修函，祈能發展關係。多年來，本公司經營鞋類進口生意，現欲擴充套件業務範圍。盼能惠賜商品目錄和報價表。 如價格公道，本公司必大額訂購。 煩請早日賜復。 此致
2.回覆對方建立商業關係的請求
Thank your for your letter of the 16th of this month. We shall be glad to enter into business relations with your company. In compliance with your request, we are sending you, under separate cover, our latest catalogue and price list covering our export range. Payment should be made by irrevocable and confirmed letter of credit. Should you wish to place an order, please telex or fax us. 本月16日收到有關商務關係的來函，不勝欣喜。謹遵要求另函奉上最新之出口商品目錄和報價單。款項煩請以不可撤銷保兌之信用狀支付。如欲訂貨，請電傳或傳真為盼。 此致 敬禮
3.請求擔任獨家代理
We would like to inform you that we act on a sole agency basis fora number of manufacturers. We specialize in finished cotton goods for the Middle eastern market: Our activities cover all types of household linen. Until now , we have been working with your textiles department and our collaboration has proved to be mutually beneficial. Please refer to them for any information regarding our company. We are very interested in an exclusive arrangement with your factoryfor the promotion of your products in Bahrain. We look forward to your early reply. `本公司擔任多家廠家的`獨家代理，專營精製棉織品，包括各燈家用亞麻製品，行銷中東。與貴公司向有業務聯絡，互利互作。貴公司紡織部亦十分了解有關業務合作之情況。 盼望能成為貴公司獨家代理，促銷在巴林市場的貨品。上述建議，煩請早日賜復，以便進一步聯絡合作。 此致 敬禮
4.拒絕對方擔任獨家代理
Thank you for your letter of 1 September suggesting that we grant you a sole agency for our household linens. I regret to say that, at this stage ,such an arrangement would berather premature. We would, however, be willing to engage in a trial collaboration with you company to see how the arrangement works. It would be necessary for you to test the market for our productsat you end. You would also have to build up a much larger turnover tojustify a sole agency. We enclose price lists covering all the products you are interested in and look forward to hearing from you soon. 9月1日有關建議擔任家用亞麻製品獨家代理的來信收悉。謹致衷心謝意。目前時機尚未成熟，不能應允該安排深感抱歉。然而，本公司樂意與貴公司先試行合作，為今後合作打下基礎。為證明擔任獨家代理的能力，貴公司宜上述貨品作市場調查，研究是否可擴大現有之營業額。奉上該貨品之報價單，敬希查照。專此候復。此致 敬禮
