在美式英語中，對于普通的郵件，通常的、最廣為被使用的做法是：在Dear （人名）的后面使用逗號（即：comma）。但是，如果是相當(dāng)正式（formal）的郵件（信函），其做法則是在Dear XXX后面使用冒號（即：colon）。

英文書信怎么寫

一，英語作文書信格式：

1，最上面頂格寫你要把信寫給誰。

2,第二段寫你要對這個朋友要說的話。

3，寫完后最后的一行寫上你自己的名字。

二，范文：

Dear Mike,
I am glad to introduce my family to you. My family is a warm and happy family. My grandparents are both teachers, they are still teaching in a university.Grandpa is for maths, and Grandma is for English, sometimes their students cometo our home to send their greetings to them. My father is working in an American factory,he is very busy. Every evening he is doing his work in the midnight. At weekend he alwaysgoes to factory for his work. My mother is a nurse. Her hospital is near my home. I am a student in Junior high school. I hope you will introduce your family to me
yours

sincerely

Tom