本文探索了书面纠错反馈对英语写作语法准确度影响的总体效应和调节效应，研究结果表明书面纠错反馈对英语写作语法准确度有显著中等程度的正向影响。同时，书面纠错反馈对英语写作语法准确度的促进作用受到学习者的教育层次、反馈类型、反馈范围、反馈时机以及反馈来源等调节变量的影响。基于研究结果，就书面纠错反馈对英语写作语法准确度的影响及其发生作用机理进行了思考，为英语写作教学的有效设计与实施提供借鉴和参考。

This paper explores the overall effect and moderator effect of written corrective feedback on the accuracy of English writing. The results show that written corrective feedback has a significant and moderate positive effect on the accuracy of English writing grammar. At the same time, the effect of written corrective feedback on the grammar accuracy of English writing is affected by the learner’s educational level, feedback type, feedback range, feedback timing and feedback source and other regulatory variables.