如果福建附件不止一项，应写成Encl：或Encs 。我们有时可看到在称呼与正文之间有Re：或Subject：（事由）字样 。
一般在信纸的中间，也可与“称呼”对齐 。还应在底下加横线，以引起读信人的注意，使收信人便于在读信之前就可了解信中的主要内容 。
事由一般在公务信函中使用，也可以省略 。Flat 3, Building 3 41 Zhongyuan Road Zhengzhou Textile Institute Zhengzhou, 450007 China February 25, 2005 Dear Zhang Li, I'm sending you this short letter of thanks with a small present, which I hope you will like. Thank you very much for helping my father last Sunday, when he broke his legs on the stairs. My father told me that he had fallen and hurt his leg badly. He could not get up or walk. Then you came to help him. You called a taxi for my father, and took him to the nearest hospital. When the doctor told you my father s leg was broken, you phoned me and told me what had happened. My father is already much better now. He will have to stay in hospital for another week, and then he can come home. Once again, my parents and I want to express our gratitude for all you have done for our family. You are such a warm-hearted student. Best wishes. Yours truly, MaHui 。