Dear teacher,
I am sorry to play phone in class.I have realised that my behaviors cause sever bad effects.First of all,I give less honor to your teaching concept and make your teaching plans out of order.Secondly,I violate the rules of school.What is worse, my behaviour not only make myself miss the lessons,but also affect other students.So,I should be punished,and I am willing to accept it.I promise that I will not be play phone,and I hope you and classmates can forgive me.
Sincerely,
某某某
好了,这封信足够你教检查的了.好了记得给分哦,写这么大篇不容易啊!说多了都是泪,下次还是别玩了吧.