商业书信中的电子邮件是一种非常普遍的联系方式，但是在写电子邮件的时候有十点文法上的注意事项。

　　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.” 应改为 Deciding to rescind our earlier estimate, we have updated our report to include $40,000 for new equipment. (We决定呀, 不是report.)

　　2.句子不要凌碎。例子: He decided not to audit the last ten contracts. Because of our previous objections about compliance. 应该连在一起.

　　3.结构对称,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. 应改为: The owner questioned the occupant's lease intentions and ink alterations of the contract.

　　4.单众数不要搞乱，不然会好刺眼，看不舒服。例如: An authorized person must show that they have security clearance.

　　5.动词主词要呼应。想想这两个分别: 1.This is one of the public-relations functions that is underbudgeted. 2. This is one of the public-relations functions, which are underbudgeted.

　　6.时态和语气不要转变太多。看商务英语已经是苦事，不要浪费人家的精力啊。

　　7.标点要准确。例如: He did not make repairs, however, he continued to monitor the equipment. 改为: He did not make repairs; however, he continued to monitor the equipment.

　　8.选词正确。像affect和effect，operative和operational等等就要弄清楚才好用啦。

　　9.拼字正确。有电脑拼字检查功能后，就更加不能偷懒。

　　10.大小写要注意.非必要不要整个字都是大写，除非要骂人。例如: MUST change to OS immediately. 外国人就觉得不礼貌和喝令人一样。要强调的话，用底线，斜字，粗体就可以了。