作文是一种综合性、实践性很强的思维运作过程.客观上要求我们教师应该亲自动笔“下水”作文,给学生做演示.叶圣陶先生早就说过:语文教师“经常动动笔,用比喻说,就是‘下水’”.（《叶圣陶语文教育论集》）许多年来,我们在作文教学实践中,有意识地运用了教师“下水”作文教学法,收到了良好的效果.具体而言,它的独特价值主要表现为以下几大方面: Composition is a comprehensive and practical thinking operation process. It objectively requires that our teachers should personally write “shui” essays and demonstrate to students. Mr. Ye Shengtao has said long ago: Chinese teachers “move frequently and use metaphors. Saying that it is ’slow water’”. (“Ye Shengtao’s Chinese Education Collection”) For many years, we have consciously used the teaching method “teaching” the composition of the teacher’s teaching method in composition teaching practice. It has received good results. Specifically, it The unique value of the main performance of the following major areas: