3. 信件的结尾：
一般结尾：
I look forward to receiving your reply/order/products/ect.
Looking forward to hearing from you.
如果你在信件中提供了信息：
I hope that this information will help you.
Please contact me if you need any further information.
Please feel free to contact me if you have any further questions.
Please let me know if you need any further information.
4. 引入主题：
With reference to …
Further to …
With regard to …
I am writing in connection with …
注：引入主题的句子可以被写在信件的开头，但with regard to 不能用于信件的开头。
环境：
(How would you start a letter about each of the following?)
an invoice (No. 679) for a photocopier
With reference to Invoice No. 679, we regret to tell you that the product arrived in bad condition.
a meeting you had with the addressee on Jan. 16th
an advertisement in the times newspaper
I am writing in connection with the advertisement in the times newspaper yesterday.
an application for a post as secretary in your company
I am writing in connection with your application for a post as secretary in our company.
a fax order for six computers that you received today
with reference to your fax order for six computer, I regret to tell you that they are out of stock at present.
责任编辑：虫虫
