Dear Jenny，

　　I am really sorry to hear that you feel bad after entering the high school.Your classmates are also new there and face the same problem so there is no need for you to worry too much about it.There is also something that you can do to change this situation.First，try to invite some of your classmates to take part in some activities together after school.It will help you understand each other better to communicate with others.Then，help others when they are in trouble，and ask them to help you when you have difficulty.Soon，I believe，you will make many new friends there.

　　Best wishes!

Yours，

Li Hua