英语作文高手进~

Dear Peter,
I'm writing this letter to tell you that No.1 middle school will have a lecture about the protection of wild animals and plants on next Saturday.We hope to see you at the lecture and give us a talk about protecting the wild animals and plants.
The purpose of this lecture is to let many students know the importance of protecting wild animals and plants.It will last for one and a half hours.So please get there on time.
Sincerely yours
WangPeng