程福宁先生在他所著的《文章学基础》一书中说:“任何百科性的文章进入语文教学当中时都要改变它的性质,成为语文学习材料,这一点是带有绝对性的。”所以,选入语文教材的课文,不仅语文知识、思想内容、艺术价值值得学习和借鉴,而且在语言文字的使用上也应该是规范的。 Cheng Fu-ning, in his book “Fundamentals of Literature,” a book said: "Any encyclopedia of articles into the language teaching must change its nature and become a language learning materials, it is with absolute. Therefore, the texts of Chinese teaching materials should not only be learned and borrowed from Chinese knowledge, ideological content and artistic value, but also be standardized in the use of spoken and written language.