基本的英文书信格式应包括四大部分，日期，称呼，正文，和落款（包括敬语）。信件开头称呼：写给朋友，用“Dear+名”。如Dear Megan。写给家人，用“My dear+ 称呼”。如My dear father。
英语写信开头高级句子常用开始：
1、I was glad to hear you good news.非常高兴听见您的信息。
2、Forgive me for not writing sooner.谅解我没有迅速复书。
3、It was very kind of you to reply so quickly.你可以迅速复书太好了。
4、I am sorry to hear that you have not been well.听说您身体不好我很难过。
5、You asked me about【+problem question 等）,now let me give you some advice.你在来信中询问我，现在，让我给你一些建议。
英语写信通用结尾用语1、Hope to hear from you soon【as early as posible】
2、Thanks again for writing about....
3、Please give my love /wish/regards to
4、I hope to hear more news about.....
5、I、m praying for your soon recovery.
6、Take care of yourself.
7、I'm looking forward to your early【favorable】 reply.
8、Thank you in advace.
9、Please remember me to your family.
10、Do please write and let me know how you are getting on.