英语应用文写作在教学实践中存在诸多障碍,其主要原因是施教者对应用文的社会交际功能理论的匮乏,在教学实践中多依赖传统的结果写作教学法和过程写作教学法。依据国内最新的外二语应用文写作理论研究,本文突出了预制语块理论和结构潜势理论在英语应用文写作培养中所起到的作用。 There are many obstacles in the practice of English essay writing. The main reason is that the lack of theories on social communicative function of the essayist depends more on the traditional result-writing and process-writing methods in teaching practice. According to the latest research on the applied writing theory of foreign language second language in China, this paper highlights the role of prefabricated chunk theory and structural potential theory in the training of English applied writing.