邀请信包括宴会、舞会、晚餐、聚会、婚礼等各种邀请信件，形式上大体分为两种:一种为正规的格式 (formal correspondence)，亦称请柬；一种是非正式格式 (informal correspondence), 即一般的邀请信。邀请信是在形式上不如请柬那样正规，但也是很考究。书写时应注意:
邀请信一定要将邀请的时间（年、月、日、钟点）、地点、场合写清楚，不能使接信人存在任何疑虑。例如:“I’d like you and Bob to come to Luncheon next Friday.”这句话中所指的是哪个星期五并不明确，所以应加上具体日期, “I’d like you and Bob to come to luncheon next Friday, May the fifth.”
1.邀请朋友共进午餐 Inviting a friend to informal luncheon Dear [Zhang Ying]: Will you come to luncheon on [Friday, May the fifth], at [twelve o’clock]? My niece [Mary] is visiting us and I think you will enjoy meeting her.She is a charming, very pretty girl … and very good company! [John and Jane] will be here, and perhaps we can [give a dance] after luncheon.Do say you’ll come!
Affectionately yours,
Li Ming 亲爱的[张营]: 您能在[5月5日星期五中午12点钟] 来吃午饭吗？
我侄女[玛丽]正在我们家中作客，我想您会乐于见到她的。她是个漂亮而聪明的女孩子，……同她在一起是很使人高兴的！[约翰和简]也到这里来，也许在饭后我们能[开个舞会]，说好，一定得来呀！
2.邀请朋友同他们不认识的人一起共进晚餐 Inviting friends to supper with the strangers Dear [Susan]: I know you are interested in [oil painting], so I’m sure you’ll be interested in [Mr.and Mrs.Lin dun]! They are coming here to supper [next Sunday night, October the twelfth], and we’d like you and [Walter] to come, too.
[Mr.and Mrs.Lin Dun] are that very charming couple we met in [London] last summer.They have a wonderful collection of [oil paintings of various stages]; and I understand that Mr.Lin Dun is quite an authority on [oil painting].I’m sure you and Walter will thoroughly enjoy and evening in their company.We’re planning supper at six; that will give us a nice long evening to talk.If I don’t hear from you before then, I’ll be expecting you on the [twelfth]! Affectionately yours, Li Ming 亲爱的[苏珊]: 我知道您对[油画]是有兴趣的，所以我相信您对林顿夫妇也会感兴趣。他们将在[10月12日（下星期日）]来吃饭，我们很希望您和瓦尔特也能同来。
[林顿夫妇]是那么好的一对夫妻。我们是去年夏天在[伦敦]认识的。他们集有[各个不同时期精美的油画作品]。我知道，林顿先生在研究[油画]方面是颇有权威的。我深信，那天晚上您和瓦尔特同他们在一起，一定会很愉快。
我们准备在6点钟吃晚饭，这样就能有较长的时间闲谈。如果事前接不到您的回信，我就指望你们那天到来。
4.邀请来家中小住及周末聚会 An invitation for a house and weekend party 篇1：邀请函 Invitation Letter
Dear Petty, I hope you didn’t make any plane for this weekend.You know I am moving into the new house, and I sincerely invite you to come to my new house.I will hold a celebration party on Saturday night.The scenery here is fantastic that I am sure you will like it.On Saturday, you can walk around my house after you get here.The party will begin at 7:00.You can live in my house that night.On Sunday, we can go fishing or play table tennis.So please do some preparation for them.You can drive here and you will see a board “Kelly’s Home” near the road.It only takes you one hour to get here.I hope there will be nothing stopping you to come.
Yours affectionately,
Kelly 亲爱的贝蒂：
希望你这个周末没有什么安排！你知道我就要搬到新房了，我真诚的邀请你来我的新房。星期六晚上我会举行一个庆祝晚会。那里的景色漂亮迷人，我相信你一定会喜欢的。星期六到这里后你可以在我家到处看看。晚会将在7点开始，到时候你可以住在我家。你可以开车过来，然后你会看见路边的一块板上写着“凯丽家”。你到这里只需一个小时，我希望你不会有什么事情而不能来。
篇2：聚会邀请函 Invitation to the Party
May 5,2012 Dear Mike, This Saturday is my birthday and my parents will hold a simple celebrating party for me.I am glad to invite you to come to the party.Blair, Emma and Roan will also be invited.I am sure we will have a good time.We will have dinner at 18:30 so that you are wished to come at 18:15.My mother is a good cook and you will enjoy the dishes.After the dinner, we will play some small games and then eat the cake.My parents and I sincerely expect you to come and hope to see you then.
Yours sincerely,
Daniel 亲爱的迈克：
这个星期六是我的生日，我父母将给我举行一个简单的庆祝派对。我很高兴邀请你来参加派对。我也邀请了布莱尔，艾玛和罗恩。我相信我们会度过一段美好时光的。我们将在6点半吃晚饭，所以希望你们6点15能到。我妈妈厨艺很好，你们一定会喜欢的。吃完晚饭，我们会玩一些小游戏，然后吃蛋糕。我父母和我都真诚期望你们来，希望到时能看到你们。
爱你的丹尼尔
篇3：邀请信 An Invitation
Dear Blake, Mrs.White will soon leave for the United States and we will held a farewell party for her which takes place from 6:00 p.m.to 7:30 p.m.on Friday, May 20, 2012 at the School Club.I am very pleased to invite you to participate in the farewell party.Another two foreign teachers you know, Mr.Frazer and Mi Gree are also invited.Please join us to say goodbye to Mrs.White.You are hoped to arrive at 5:50 p.m.I look forward to see you on May 20.
Yours sincerely,
Yan Yang
怀特老师很快就去美国了，我们将为她举行一次欢送会，时间是星期五晚上六点到七点半，地点是学校俱乐部。我很高兴邀请你来参加欢送会。我们还邀请了你认识的另外两位外教Frazer和Gree。希望你能和我们一起送别怀特老师。希望你5点50能到这。期待那天能看到你。
晏阳
