DearTom,

        I am writing this email to invite you to join Lucy’s birthday party.

        The day of October 20th will be Lucy's 18th birthday.We’re going to hold a partyin Lucy’s house this Saturday evening. Many of our good friends and classmates are coming.we will have a big dinner together.After that we will sing, dance and play games.The party will last for three hours, from 7 p.m. to 10 p.m.I really hope you can come and join us.Our friends and classmates will be very happy to have you with us.I'm sure we will have a lot of fun together.

        Please let me know whether you could come ornot.I'm looking forward to yourearly reply.

        Best wishes,

        Li Ke