Dear Mr Brown As a student who admires you.I am writing this letter to invite you to join in a picnic. There are several aspects that I want to tell you。 First of all. It is an.6:00 on March 11 that the picnic will be held on riverside,so we will gather at the school a gate when an.5:30.In addition.It goes to riverside that we take the bus and you should take an umbrella.Finally I am convinced that you will play an important role in this activity and it will not he successful if you don′t com. It is very kind of you to read my letter. I will be grateful if you take my invitation seriously Iam looking forward to your reply