like most of my classmates, i regard our biochemistry teacher professor wang weida as a star teacher, for he has many of the qualities that students appreciate in an instructor.

　　first, he organizes the class well. we particularly welcome the schedules of assignments that he gives us at the beginning of the term. having an idea of an entire frame of the knowledge planned to learn in the semester, we are able to budget our time more efficiently. moreover, professor wang promptly corrects and returns papers and tests, which enables students to learn from their mistakes and to produce better work in their next as signments.second, he is patient. when introducing new and difficult points, he tries to explain it fully. what's more, he pays serious attention to all our questions. in his lecture, we never feel embarrassed to ask a weak or irrelevant question.

　　third, professor wang expresses himself clearly. he does not speak too fast, and his voice is loud so that it can be heard by everyone in the room.finally, he is really an interesting guy. he grasps the attention of his class through his sense of humor. to emphasize important points in a lecture, he often tells witty stories about it and impresses us deeply in laughing.

　　a thoughtful and dedicated man, professor wang is generally regarded as a successful university instructor.