教育界常用一桶水和一杯水的关系来比喻教师应有的知识技能与学生应掌握知识之间的关系。随着教育所处环境和地位的变化 ,对教师应具备知识技能的要求和理解也发生了变化。有人认为 ,教师应有的不仅是一桶普通的水 ,而应是新鲜水 ,纯净水 ,长流水 ,还有人提出 ,教师应该象一个 Education often use a bucket of water and a cup of water to compare the metaphor of teachers should have knowledge and skills and students should master the relationship between knowledge. As the environment and status of education change, the requirements and understanding of teachers with knowledge and skills should also change. Some people think that teachers should not only be a bucket of ordinary water, but should be fresh water, pure water, long flowing water, it was also suggested that teachers should be like a