The present study seeks to compare the writing products of EFL undergraduates using as measures accuracy and grammatical complexity. It also intends to describe the evolution of the morphological and syntactic errors as English is used by learners. A total of 100 learners of English as a foreign language participated in the study. They were divided into two groups according to their Oxford Placement Test score: group A was formed by 36 advanced students; and group B was made up of 64 upper intermediate students. Compositions were collected as the basis of this study. Results show that upper intermediate students exhibited a higher error mean in each of the error categories, namely, grammatical morphemes, lexical choice and syntax, as well as punctuation and spelling. However, an analysis of variance shows the differences between groups to be significant only in spelling errors and in punctuation errors.

中文翻译：

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EFL写作的准确性和语法复杂性研究

本研究旨在比较EFL大学生的写作产品，以其准确性和语法复杂性作为衡量标准。它还打算描述学习者使用英语时形态和句法错误的演变。共有100名英语作为外语学习者参加了这项研究。根据他们的牛津分班考试成绩将他们分为两组：A组由36名高级学生组成；B组由64位高中生组成。收集组合物作为该研究的基础。结果表明，高中生在每个错误类别（语法语素，词汇选择和句法以及标点和拼写）中均表现出较高的错误平均值。然而，