教了几年书，我深深体会到“微笑”无论在教学上，还是在教育中，都有着不可估量的作用。固然，板着面孔，整天在学生面前拉长着脸，确能给学生以“严肃”之感，甚至是“威严”，自己仿佛也很有威信。实际上，这样做无论是在教学，还是教育上，都不会收到好的效果，甚至适得其 Teach a few years of books, I deeply appreciate the “smile” both in teaching, or in education, has an incalculable role. Of course, the face, face all day long in front of students, can give students a “serious” sense, or even “dignified”, as if they are also very prestigious. In fact, doing so will not receive good results or even be suitable for education or education