英文邀请人家吃饭的邀请函格式是怎样的

英文邀请函一般正式的文体前面都不空格，且段落间是要空一行的。格式如下：

Dear sir/madam: 

I'm delighted you have accepted our invitation to speak at the Conference in [city] on [date]. 

As we agreed, you'll be speaking on the topic "" from [time] to [time]. There will be an additional minutes for questions. 

Would you please tell me what kind of audio-visual equipment you'll need. If you could let me know your specific requirements by [date], I'll have plenty of time to make sure that the hotel provides you with what you need. 

Thank you again for agreeing to speak. I look forward to hearing from you. 

Sincerely yours, 

[name] 

[title]

without a sixpence beyond his commission
首先是主人（邀请人copy）的姓名（要用全称）或头衔；
第二部分是“requests the pleasure (或者honor)of",相当于汉语的“恭请”
第三部分是客人（被邀请人）的姓名（要用全称）（加’S）或用Your (泛指）；
第四部zhidao分是“presence at ..." 相当于汉语中的“光临。。。”
第五是日期；
第六是钟点
第七是地点
给你的例子：
Mr. XXXX
Requests the pleasure of
Mr.XXX's
presence at party
on Friday, the 18th of January
at 7 o'clockp.m.
at Huaxing Hotel XXXX Road

Dear Uncle Yang,
I would like to invite you to the international food festival in
our school on Sunday,June 15th.Our students will sell many delicious
foods.
Hope to see you then!
sincerely,
Mary
这是复邀请函的范文.首先在第一行不空格写制对方的名百字,然后度在第而行空大约有一个单词左问右的距离写邀请正文,最后写期望对答方可以到来.结尾写自己的姓名.