教学既是一门科学,也是一门艺术。但它不同于汉语(母语)教学,有着丰富的语言和文化积淀,它缺少英语语言环境和文化氛围。学生对语言材料感知和理解的效果如何在很大程度上取决于教师呈现知识的过程与学生认 Teaching is both a science and an art. But it is different from Chinese (mother tongue) teaching, has a wealth of language and cultural heritage, it lacks the English language environment and cultural atmosphere. How students’ perceptions and comprehension of language materials depend largely on how teachers present knowledge and student recognition