在多年的教学中,我们确立了“把握大纲、活用课本、注重双基、培养能力”的指导思想,认真研究课本例题,挖掘其潜力,通过改造结论, 添加条件及解决问题的训练,真正做到举一反三、触类旁通,从而取得了良好的教学效果,现举课本一例来说明之． In many years of teaching, we have established the guiding ideology of “grasping the syllabus, using textbooks, focusing on double foundations, and nurturing abilities”. We have seriously studied examples of textbooks and tapped their potentials. We have really improved the training by adding conclusions, adding conditions, and solving problems. To give an example, by analogy, so as to achieve a good teaching effect, an example of a textbook to illustrate.