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。

1Dear 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 pm on April 1。

涉及宴会舞会婚礼等活动时，主人总是发出一些邀请函，但其实邀请函的形式都是差不多的，你可以根据模板来写，注意把时间，地点，人物要表述清楚Dear sir，There will be a ___资料atin ___地点on___时光。