Recently, the integration of linguistics and technology has been promoted and widely used in the field of linguistics and English writing research for several purposes. One of those purposes is to evaluate English as a Foreign Language (EFL) writing ability by using electronic assessment tools. In the current study, an automated writing evaluation tool (Coh-Metrix) was used to indicate English-major students’ writing performances based on the discourse components of the texts. The English texts generated for each writing task on two different topics were collected. The corpus analyses gathered from Coh-Metrix identified linguistic and discourse features that were interpreted to determine the 40 EFL undergraduate students’ English writing abilities. The students wrote and revised their essays in hand-written essays in class and resubmitted their essays in digital forms with corrections made. The results showed that these students demonstrated linguistic flexibility across writing assignments that they produced. The analyses also indicated that the length of the texts and the uses of the word concreteness, and the referential and deep cohesion had impacts on the students’ writing performances across the writing tasks. Besides, the findings suggest practical value in using an automated text analysis to support teachers’ instructional decisions that could help to identify improvement of students’ writing skill.

近年来，出于多种目的，已经促进了语言学和技术的集成，并且广泛地用于语言学和英语写作研究领域。这些目的之一是使用电子评估工具评估英语作为外语（EFL）的写作能力。在当前的研究中，基于文本的话语成分，使用了自动写作评估工具（Coh-Metrix）来指示英语专业的学生的写作表现。收集了针对两个不同主题的每个写作任务生成的英语文本。从Coh-Metrix收集的语料库分析确定了语言和话语特征，这些特征经解释后确定了40名EFL本科生的英语写作能力。学生在课堂上用手写的论文写作和修改论文，并以更正的方式以数字形式重新提交论文。结果表明，这些学生在所完成的写作作业中表现出语言灵活性。分析还表明，课文的篇幅和具体性一词的使用以及参考性和深厚的内聚性对学生在写作任务中的写作表现产生了影响。此外，研究结果还表明，使用自动文本分析来支持教师的教学决策具有实用价值，这有助于确定学生的写作技巧。分析还表明，课文的篇幅和具体性一词的使用以及参考性和深厚的内聚性对学生在写作任务中的写作表现产生了影响。此外，研究结果还表明，使用自动文本分析来支持教师的教学决策具有实用价值，这有助于确定学生的写作技巧。分析还表明，课文的篇幅和具体性一词的使用以及参考性和深厚的内聚性对学生在写作任务中的写作表现产生了影响。此外，研究结果还表明，使用自动文本分析来支持教师的教学决策具有实用价值，这有助于确定学生的写作技巧。