[解析]
Dear American Guest,
On behalf of our school,I would like to express our warm welcome to you.We are lucky to have you here in the middle of our English Week Activities.(表示对客人的欢迎)
As scheduled,we have English Talent Show today.【高分句型一】The purpose of this program is to develop our interest in English learning and practical abilities in listening and speaking.【高分句型二】(活动的目的) The programme consists of the following activities:recitation,singing,word spelling,story telling and so on.The Show will begin at two o'clock this afternoon at the Student Centre.Dear guests,you are welcome to take part in some activities.I hope we students will benefit from your presence.(活动的内容))
I sincerely wish you a pleasant time with us.Thank you.(表达对客人的祝愿)