英文邀请函 就是一封信而已。内容就是邀请XXX 参加一个XXX聚会/会议/party等等。告知具体的时间，地点。并客气的邀请就可以了。比如 邀请你的同学参加一个聚会 例句如下。
Dear XXX, Good day!
My birthday is coming. My parents told me they wanna prepare a small party to celebrate my birthday. You are my good friend. Here I am glad to invited you to join us. After dinner, we can play together, games , karaoke, chess, pingpang, etc . Would you please join us for fun? I think we will have a good time in the nice weekend.
Time: At 6:00 p.m. of this Friday(英语写上某年某月某日)
Address: At my home ( Room 101, XXX Rd, XXX building, XXX District. )
Waiting for your kind reply.
Best ,
XXXX
温馨提示：答案为网友推荐，仅供参考