给上司写信，公文和应用文写作中都没有这种模板。
不过给上司写信，要考虑你和上司的关系，你所想表达的内容，你写信想达到的目的，这些因素将会决定你的信的措词和语气。所以，你一句怎样给上司写信，还真没办法回答你。
英语作文中书信的格式
开头写日期，下面写亲爱的****之后写内容，再写署名、地址
英语作文写信的格式
英语书信格式
英文书信通常由下列五个部分组成：
A 信头（Heading）
信头包括写信人地址和写信日期，通常写在信笺的右上角。在比较熟识的朋友之间的通信，写信人的地址常可略去。本课的信头就只写了写信日期，而没有写信人的地址。日期通常有下列两种定法：
（a）月、日、年：如August 15, 200__
（b）日、月、年：如15th august, 200__
地址的写法通常是由小到大，如：门牌号、街道名、市（县）名、省名、国名（邮政编码通常写在城市名之后）。这同中文书信的地址写法完全相反。地址可以写1～3行，日期写在地址的下方（见信笺格式）。
B 称呼（Salutation）
称呼指写信人对收信人的称呼，如Dear Xiaojun，写在信头的下方和信笺的左边。称呼一般用Dear…或My dear…开头，称呼后一般用逗号。
C 正文（Body）
这是书信的主体部分，即写信人要表达的内容。正文要求文字通顺，层次分明，表意清楚。可以手书，也可以打写。
D 结束语（Complimentary Close）
它是书信结尾的恭维话，相当于文中书信最后的“祝好”、“致礼”之类的话语。本课书信中的“Best wishes”（致以最好的祝愿）就是结束语。
E 签名（Signature）
签名通常签在结束语下方的中间偏右的位置，如本课信中的Charlie。签名应是亲笔书写，即使是打写机打出的信件，最后仍需亲笔签名。在签名的上方可根据写信人和收信人的关系写上Sincerely yours/Yours sincerely（用于长辈或朋友之间），或Respectfully yours/Yours respectfully（用于对长辈或上级）。
书信格式如下：
书信类英语作文范文
书信类型的英语写作在我们的英语学习中，它是不可缺少的一部分。下面是我给大家整理的书信类英语范文，供大家参阅!
书信类英语范文1 Dear ...,
Nice to hear from you !I can imagine that you are now enjoying your life and work from your letter.I'm fine too,everything goes well.How's the weather up there?It's nice here.The sun is shining brightly and the wind is breeze biowing.I really enjoy the feeling of wind blowing through my cheek.These days I plant a potted flower,but I don't know its name,now it sprouted.The buds are so green.I like green so much.Which color do you like best?I think it will blossom in a few days,then I will send you the photo of it.Are you looking forward to receive it?
I'm so miss you. I had a quarrel with my friend a few days ago,because she broke the cup you gave me.I love the cup so much because it's the only present you have gave me.I'm so upset now.Do you think I should apologize to her?
In next week,we will have a final text.I feel so nervious because my math is so poor.I'm afraid I will fail the exam.What can I do?Can you give me some suggestions?Best wishes,write Soon !
Yours
XXX
书信类英语范文2 Dear Susan,
I will be holding a dinner party at our house on Saturday, June 23, 2005 to celebrate my father’s being awarded the Pulitzer Prize for journalism this year. A s you are a close friend of our family,my parents and I would very much like you to participate in the celebratin and share our joy
The occasion will start at five o’clock in the afternoon. This will be followed by a buffet dinner party with a selection of food drinks. At around eidht o;clock, a band will perform some works by Bach and Strauss
If you are free on June 23, my family and I look forward to seeing you.
Best Regards.
Li Ming
书信类英语范文3 A Letter For Help
一封求助信
Dear Ralph,
I’m a middle school student. My name is Li Hua. I once had a very happy family, but now everything has changed because of my father. He used to be a very good doctor and was often praised by his patients. He took good care of the family and did housework every day. However, he is now quite a different person. He plays majiang all night and often quarrels with my mother. I just cannot concentrate on my studies and my grades are coming down. I’m very much worried and I’m afraid it will destroy my family as well as my father.
Could you help me and tell me what to do? I’m looking forward to your reply. Thank you very much.
Yours,
Li Hua
书信类英语范文4 Feb. 20, 2004
Dear Alice,
How nice to hear from you. You want to know what is going on in schools in China? Now, I will tell you about it.
In the past, exam-oriented education forced us to listen to our teachers while taking notes in class. We did all kinds of exercises without end, though it was 5 o’clock in the afternoon. After supper, we had to continue our exercises far into the night.
Now, quality-oriented education has made our school life colorful. We are active in class. In order to train the ability, we often do research on study. Sometimes one of us teaches ourselves. We have various outside activities, such as singing, dancing, English corner, and taking computer lessons. Basketball and football are our favorite sports. In the evening we can watch news on TV, do experiments by ourselves and have talks and discussions of our subjects.
Please make sure that our school life is getting more and more colorful and interesting.
Best wishes.
Yours,
Li Hua
书信类英语范文5 Dear Ms. Tancredi:
Last week, my family and I dined at your restaurant while travlling in Singapore. We are alwayslooking to try another new restaurant. We liked the way your place looked, so we went inside tohave dinner.
The place was crowded and the waiters seemed very busy. After a long wait, we were finallyseated. Soon, we ordered the food. We waited an even longer time for the food to arrive.Frustrated, I got the attention of a waiter passing by. I asked what was going on with ourmeals. He went and checked with the chef. It turned out our waiter had forgotten to place yourorder. Rightfully angry, we left the restaurant.
Forgetting a customer's order is a big problem. If that type of thing continues, you are going tolose your customers. Here's a suggestion. Require the waiters to actually write down theorders. In such a busy place, it would be impossible to remember them all.
Sincerely,
Shiwen Cai
[英语书信范文简评]
1. 以上的英语书信范文是由一名曾去新加坡旅游的中国游客蔡诗文(Shiwen Cai)写给新加坡一个餐厅的经理Tancredi女士的一封信件。从英语书信的信头可以看出写信人的准确地址，从下面的署名可以看出写信人的姓名;从上面英语书信范文的信内地址可以看出收信人的姓名和地址。学习者如果想了解英语书信的详细格式，可以参考本站文章：英语书信的格式。
2. 从内容上看，这篇英语书信范文的写作目的非常清晰：给餐厅经理提出服务和管理上的建议。作者以叙述就餐经历为开头逐步引入到写作目的，从餐厅的所见所闻和感受自然地提出餐厅管理上的问题并给予建议。这是比较正式的英语书信中常见的一种写作方法。当然，如果在熟人之间进行书信交流，或者文章篇幅受限较大的情况下，也可以直入主题，在信的开头直接写“I am writing to tell you that...(我写这封信是想告诉你...)”，“This letter is based on your request that...(基于你对...的请求，我给你写了这封信)”等等。
3. 书信有时候是很严肃的，有时候也可能是非常随意的，所以英语书信作为一个使用文体来说格式和风格并不一定是特别的严谨和一成不变，希望学习者能够根据具体情况作出相应的调整。