The math teacher of my class is a young man. His name is Jiang Shan. He is tall and fat. We call him the "Big Guy". When he knows it, he isn't angry and says it's lovely. He is easy going and interesting. We can make jokes with him. But about our study, he is serious but patient. We can’t be sloppy on our study. When we have questions, we can ask him anytime. He is a good teacher.

我们班的数学老师是一位年轻的男老师，他的名字叫江山。他高个子，比较胖，所以我们叫他“大个子”。他知道后，