Being a teacher,he is not only kind and friendly,but also very strict both with his students and in his own work as well.This is our dean teacher,Mr.Li.He is nearly fifty years old but energetic like a young man.Mr.Li has been working so hard in his teaching since he came to this school.He has been praised many times for his teaching methods and wide horizen.Students enjoy attending his lectures,for hsi lectures are usually interesting.Therefore ,he and his lectures are very popular among students.In the spare time,he gets on well with every student,although he is very strict with the students.He always encourages students to study for the motherland.With his help,students have made great progress in their lessons.I think Mr.Li is a qualified teacher and an excellent example to all the teachers.