(一)避免用词错误：

　　例如：As to the steamers sailing from Hong Kong to San Francisco， we have bimonthly direct services。

　　此处bimonthly有歧义：可以是twice a month 或者once two month.故读信者就迷惑了，可以改写为：

　　1.We have two direct sailings every month from Hong Kong to San Francisco。

　　2.We have semimonthly direct sailing from Hong Kong to San Francisco。

　　3.We have a direct sailing from Hong Kong to San Francisco。

　　(二)注意词语所放的位置：

　　例如：

　　1. We shall be able to supply 10 cases of the item only。

　　2. We shall be able to supply 10 cases only of the item。

　　前者则有两种商品以上的含义。

　　(三)注意句子的结构：

　　例如：

　　1.We sent you 5 samples yesterday of the goods which you requested in your letter of May 20 by air。

　　2.We sent you， by air， 5 samples of the goods which you requested in your letter of May 20。

　　Conciseness 简洁

　　(一)避免废话连篇：

　　例如：

　　1.We wish to acknowledge receipt of your letter...可改为：We appreciate your letter..。

　　2.Enclosed herewith please find two copies of...可改为： We enclose two copies of...

　　(二)避免不必要的重复：

　　(三)短句、单词的运用：

　　Enclosed herewith-----enclosed

　　at this time-----now

　　due to the fact that-----because

　　a draft in the amount of $1000-----a draft for $1000。