邀请函是公务礼仪书信的一种。在个人社会交往中, 一般叫请柬或请帖。以下是由出国留学网为您提供的英文版邀请函，欢迎参考。 范文一：邀请朋友共进午餐 Inviting a friend to informal luncheon Dear [xx]: Will you come to luncheon on [Friday, May the fifth], at [twelve o’clock]? My niece [Mary] is visiting us and I think...