Dear Will,
It's very nice to write to you. I want to tell you something about my school, and I want to invite you to visit my school. It's a very beautiful place to study in. There are a lot of trees and bushes in the central garden in my school. The buildings are all very tall and stylish. I really love my teachers and friends. I'll introduce them to you once you are here. My teachers are well-known in the school for their good teaching techniques and humorous teaching styles. My friends are also all nice people. I'm sure you will love them as I do. You are more than welcomed to come and visit me as soon as possible.
I'm looking forward to your reply.
Best,
XXX (你的名字)
如对于我的解答有问题,欢迎继续追问～
如果满意,请点击“采纳为满意答案”,谢谢：）我才上初一7a啊没什么很难的语法啊，都是简单句。顶多是一些生词而已，你可以当是增加一下词汇量。