Derivational knowledge is associated with writing and speaking skills. These skills are essential for EFL students who express themselves in oral presentations or written assignments. Therefore, diagnostic measurement of productive derivational knowledge is of vital importance, especially in regard to the most frequent 1,000 word families that…

Considering the controversy about the nature of ergativity, the issue of whether a case morpheme is theta assigning or just structural case-marking, the present study tried to provide an evidence for either side or both. To this aim, the acquisition and use of ergative verbs were studied and possible explications of the errors were presented.…

This study aims to clearly diagnose EFL "students' writing strengths and weaknesses." I adapted a diagnostic framework which comprises multiple writing components associated with three main dimensions of second language writing. The essays of 304 English learners who enrolled in an English language program were double-rated by 13…

Focus on form instruction is a kind of instruction that draws students, attention to linguistic elements as they arise incidentally in meaning based instruction. There are different types of focus on form instruction. The present study was designed to investigate the effect of incidental focus on form on grammatical accuracy among Iranian L2…

This study investigated the frequency of the grammatical errors related to the four categories of preposition, relative pronoun, article, and tense using the translation task. In addition, the frequencies of these grammatical errors in different categories and in each category were examined. The quantitative component of the study further looked…