Dear XXXX,
XX and I have set the date and we want you to be the first to know it. Were going to be married very quietly at the Community Church on Thursday, June the twelfth, at noon.
We want you to come to the ceremony, and also to the wedding banquet afterward at home.
Well be looking for you, XXXX, at eleven!
With my best regards!
[译文]
亲爱的XXXX，
XX和我已经决定了婚期，我们首先让您知道，婚礼定于六月十二日(星期四)正午在社区教堂举行。(日期和地点可以自行改动)
我们邀请您参加我们的婚礼，典礼结束后，请您出席在家中举行的喜宴。
我们期待着您在十一点到来!
致以我们最诚挚的问候!
Dear Mr. Smith,
it would give [me/us] great pleasure to have your presence at a reception in honor of the Chinese delegation.
the reception will be held in the [the city hall], on [Tuesday, October the fourth]. cocktails will be served promptly at [six] to be followed b dinner at [eight].
[i/we] sincerely hope you can attend. let [me/us] know.
Sincerely yours
亲爱的[史密斯先生]:
如您能够出席为[中国代表团]而举行的招待会，[我（们）]将感到十分荣幸。 招待会定于[10月4日（星期二）]在[市政厅]举行。[6点钟]准时举行[鸡犬不宁尾酒会]， 随之在[8点钟]举行[正式的晚宴]。
[我（们）]期待着您的光临。请提前通知您能否出席。
December 14th,20xx
Dear XXX,
I would like to invite you for my birthday party.
Date:December 26th,20xx (Friday)
Time:7:00 p.m.
Venue:No.8,Xing Yi Road
There is a variety of chinese and western food including Italian pastries,Tomyam fried rice,curry chicken,mashed potatoes,vegetable salad,fruit salad,chinese herbal soup,mushroom soup and etc.
It would be my honour to celebrate my birthday with you.
Your attendance is greatly appreciated.Thank you.
Best regards,
YYY
May 2， 20xx
Dear Lucy，
Next Monday is my 20th birthday. Imagine， there are already twenty years behind me! No wonder I feel old!
My parents are giving a dinner party to mark the party. The first person they wish to invite is you， my childhood pal. Indeed， all of those 20 years are more or less associated with you.
Well be expecting you any time after six. See you then.
Yours，
XXX