邀请信的格式如下：
开头即表明邀请原因，邀请对方参加活动。邀请信中间要介绍活动的具体内容，强调活动的意义，表明参加这项活动的必要性，使得邀请成功。信的结尾，请期待对方尽早确定是否参与，并给自己回复。
正文
Dear Wangcai,
I am greatly honored to formally invite you to participate in Mr. Old Fish’s wedding ceremony with Ms. Fujiwora to be held at Beijing Grand Hotel from 8 to 10 p.m. on April 1, 2019.
As you are a close friend of us, we would very much like you to attend the celebration and share our joy. The occasion will start at seven o’clock in the evening, with the showing of their wedding ceremony.
This will be followed by a dinner party. At around ten, we will hold a small musical soiree, at which a band will perform some works by Bach and Strauss.
If you do not have any prior appointment on April 1, we look forward to the pleasure of your company.
Yours sincerely,
Li Ming
亲爱的王采：
我非常荣幸地正式邀请您参加2019年4月1日晚8点至10点在北京大酒店举行的老鱼先生与藤原爱女士的婚礼。
由于您是我们的好朋友，我们非常希望您能参加我们的庆祝活动并分享我们的喜悦。婚礼将在晚上七点开始，届时他们将举行婚礼。
接下来是一个晚宴。十点左右，我们将举行一个小型音乐晚会，由一个乐队演奏巴赫和施特劳斯的一些作品。如果您在4月1日没有任何预约，我们期待着您的光临。
李明
邀请信
一文章结构
（自我介绍）活动名称+发出邀请2.
活动具体内容和安排
3. 参加活动能给受邀人（邀请人）带来的好处
4. 表明期待以及联系方式
二常用句型
The...will be held on ....
The activity is in honor of ....
You can also bring ...together with you.
May I have the honor of your accompany at dinner?
We sincerely/ faithfully hope you can attend...
You will be my most respected guest to come to ...
Please confirm your participation at your earliest convenience.
Please let me know soon if you decide to come.
I shall be much obliged by a reply at your convenience.
三模板
Dear___,
__________(活动的主题、时间、地点）. I am writing to invite you to______.
The are some points you may want to know about_______. / During
the ________, we will have lots of activities you are interested in. First,
________(具体内容1）. Second, ___________（具体内容2）.
I believe that you will be interested in _________(受邀人参加理由）.
For one thing, _________参加理由1）. For another, _________（参加理由2）
Since the ______will begin _______, is it possible __________? I am looking forward to your attending.
四高考满分作文
邀请信
（2010全国）假如你是育才中学学生会主席李华，你校将举办一次英语演讲比赛，希望附近某大学外籍教师Smith 女士来做评委。请参照以下比赛通知给她写一封信。
英语演讲比赛
主题：人与自然
时间：6月15日下午2：00-5：00
地点：501教室
参赛选手：10名学生
联系人：李华（电话：44876655）
Dear Ms.Smith,
I am Lihua, the leader of the Students Union of Yucai Middle School.I sincerely hope you can set aside some time for our English Speech Contest and be a judge.
The contest, the theme of which is “Man and Nature”, will be held in the Room 501 from 2：00 to 5：00 on the afternoon of June 15. What’s more, there will be ten students taking part in it. I am sure that it will be a great success if you can give us some precious remarks.
I would appreciate it if you could accept my invitation. My telephonenumber is 44876655. I am looking forward to your reply. With best wishes,
Li Hua
五
Practices:
1. 假如你叫李华, 你所在的学校拟在下个月举办美国电影节（American Film Festival)。请你根据以下要点给你的美国朋友Peter 写一封短信，邀请他给学生做一次讲座。信的主要内容包括：
1. 讲座目的：使学生对美国电影有所了解；
2. 讲座内容：简要介绍美国电影业的历史；
3. 讲座时间：1小时30分钟左右
注意：
1. 可适当增加细节，使结构完整；
2. 词数150左右。
本回答被网友采纳Invitation to my birthday party.
My birthday will be on xx August 2011, Saturday.
My parents will hold a party for me at home.
I would like to invite you to attend.
The start time will be 11:00a.m.
There will be games and buffet lunch.
Also there will be magic show .
Please reply to me if you will join.
Yours faithfully.
本回答被网友采纳