[解析]
Dear Mr.White,
I'm very glad to tell you that a threeday Art Festival which is from April 28 to 30,will be held in the MultiPurpose Hall of our school. 【高分句型一】During the three days,the activities start at 3 p.m.and end at 5 p.m.,lasting for 2 hours.Below are the detailed arrangements.(说明目的)
On April 28,various instrument performances will be going on,which are sure to be a feast for your ears. (4月28日,乐器演奏)April 29 will see beautiful songs and dances presented by us students. (4月29日,歌舞表演)What you can't miss is the activity on April 30 as both our teachers and students will perform together on the stage.【高分句型二】(4月30日,师生联欢)
We would be highly honoured if you could join us.This festival,I believe,will be quite an experience and worth your visit.(总结)
Yours sincerely,
Li Hua