信函从类别上分类包括以下几种类型:建议信、投诉信、求职信、辞职信、感谢信、道歉信、表扬信、询问信等。从信函对象来分的话,包括私人信函和公务信函。
    一、英文书信格式
    缩进式:称呼顶格写,正文每段第一行向后缩进4个字母,段与段之间不空行,落款位于中间偏右的位置。
    称呼:书信写作的称呼语大致分为两种情况:
   
书信的情况
称呼语
1)写给团体、组织或机构的负责人
①给不认识的人
Dear Sir or Madam,/ To Whom It Many Concern
②给认识的人
性别+姓:Dear Mr. Wang
性别+职务:Dear Mr./Ms. President/Professor/Manager
职务+姓名:Dear President (James) Wang
2)写给个人
①认识,但关系不太亲密
同1)中的②
②熟人或亲属
灾民
直呼其名:Dear Mary, Dear John
注:president的含义:总统、董事长、总裁、大学校长、会长、主席等。
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    二、英语书信模板
   
    1, 建议信
   
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    Dear___,
    I am quite delighted to learn that_写信的原因.according to my point of view,表述建议内容.On the one hand,提出建议的理由一. On the other hand,建议的理由二,
    With regard to 具体到某一方面的建议, I suggest建议的具体内容. If 供被建议人的选择.it is unnecessary for you to建议内容的另一方面. What is more, 其它的建议. I am sure对建议内容所作的承诺.
    Please inform me期望被建议人作出的回应.
    Sincerely yours,
    Signature
    2, 投诉、批评、抱怨
    Dear___,
    I am写信人的身份. I venture to write you a letter concerning抱怨的内容.
    The focal point of the complaint is抱怨的中心点.for one thing,抱怨内容的一个方面.for another,_抱怨内容的另一个方面_.honestly speaking,客观的评论.but抱怨产生的原因
    All in all, there is still much room for improvement. Before I take any further action, it is my hope表达本人的愿望.Thank you for your time and kind consideration.
    Sincerely yours,
    signature
   
    3, 道歉信
    Dear ___,
    I am tremendously sorry to tell you that阐述道歉的理由.now, I am writing you this letter of apology to show my deep regret. please accept my sincere apology. I hope you will understand me and excuse me for请求对方给予原谅的理由.
    The reason for my absence was due to 造成过失的原因. I had no way out because自己当时的处境和情况. Therefore it is not in my power to过失产生的结果.
    Naturally, I want to suggest建议下次再实现的愿望. I shall be obliged if you商定下次见面的时间和地点. We may meet again and I hope to see you soon
    Sincerely yours,
    Signature.
   
    4, 感谢信
    Dear___,
    I am now writing these few lines to express my sincere thanks for感谢的原因.I would like to know how much your对方所给予的帮助等meant to me. you have a positive genius for对收信人某方面的赞誉.I not only enjoyed对收信人给予帮助等的反应一,but also对收信人给予帮助等的反应二.I shall ever remember ___as one of the most___ in my life.
   
    I hope to have the opportunity of reciprocating. I will feel very honored and pleased if you表达自己回报的心愿.I am looking forward to seeing you next time!
   
    I repeat my thanks again for your___. please give my kind regards to your___.
    Yours truly,
   
    signature
   
    5, 求职申请信
    Dear___,
    I am applying for the position of想申请的职务 advertised in___. I major in所学的专业,my training in所接受过的培训definitely meets your qualifications. my complete resume is attached.
   
    I will graduate in毕业时间from毕业院校.in addition to the required courses of my major, I have选修课程. I also have some experience in社会工作经验.
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    May I have a personal interview at your convenience? I can be reached by telephone.
    Sincerely yours,
   
    signature
   
    6, 祝贺信
    Dear___,
    I have learnt with delight that you祝贺的理由, I would like to extend to you my utmost congratulations on被祝贺人所取得的成就. You must be祝贺他很棒. And I feel very happy for you.
   
    被祝贺人所取得的成绩is quite exciting news! I know this is surely owing to 被祝贺人做出的努力.
   
    Kindly let me know when you询问对方何时有空.I hope表达愿望my best wishes for your___.
   
    Sincerely yours,
    Signature
   
    7, 邀请信
    Dear___
    开门见山提出事件活动,地点,时间,It would be pleasant/honored to have you here.
   
    During the party time/conference, we will have lots of activities/points you will be interested in. First,举行活动之一.second举行活动之二.
   
    I know/believe you will be very interested in对这次活动感兴趣.first/for one thing,受邀请人参加的理由之一.second/for another, 受邀请人参加的理由之二.the conference/the party would not be complete without you.
   
    The party/conference will begin at举行时间and we do hope you can come.
   
    Sincerely yours,
    signature
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    8, 推荐信
    Dear___,
    It affords me much pleasure to recommend所要推荐的人to you. during his/her graduate years he/she was被推荐人在学校担任的职务. As his/her和被推荐人的关系I found him/he被推荐人的优点his/her performance in the school years was outstanding. first, he/she had been优点之一and showed great talents in优点表现的方面.in addition, he/she has a very pleasant personality. He/she has developed a strong sense of被推荐人的性格特征,and working with him/her is always和被推荐人一起时候的感觉.I can state that he/she has all the qualities of being所具备的特征.