预习是学习活动的重要前提,也是有效学习的重要基础,它是学习对象学习技能和学习素养有效融合,深入实践的“演练”和“行动”.指导和培养初中生良好、有序、深入的预习能力,已成为素质教育的一项重要任务. Pre-learning is an important prerequisite for learning activities and is an important basis for effective learning. It is an effective integration of learning skills and learning literacy, and deep-practice “exercises” and “actions”. It is good to guide and train junior high school students. Preliminaries and in-depth preparation skills have become an important task of quality education.