一戒只讲优点 ,不讲缺点。评课要有一说一 ,对优点不能以一当十 ,对缺点不能以十当一。二戒带有色眼镜看人。对亲者、疏者 ,老教师和新教师应一视同仁。三戒将自己的观点强加于人。某些教学方法 ,处于探讨实验阶段 ,某些学术问题尚有争议 ,未形成定论 ,要遵循“百花齐放、百家 The first ring only speaks about merits, and does not speak shortcomings. There must be one commentary for the assessment, one for the merits, and ten for the shortcomings. Two rings with colored glasses to see people. Old and new teachers should be treated equally by close relatives and patrons. The three precepts imposed their own opinions. Some teaching methods are still in the discussion of experimental stage. Some academic issues are still controversial. There is no definitive conclusion and we must follow the principle of “hundred flowers and hundreds of flowers.