The primary purpose of this qualitative study is to understand the reasons underlying students' negative perceptions of corpus use in a quantitative study, which assessed the grammar achievement and attitudes of lower-level EFL students who were taught with a corpus tool, which was either BYU-BNC or AntConc 3.2.1 which is run with a small corpus. The secondary purpose of this study is to acquire more detailed information about the attitudes of participants towards learning English grammar with

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... orpus tools. A purposive sampling method was used to select seven volunteer freshman participants majoring in the Department of Computer Education and Instructional Technology at Mustafa Kemal University in Turkey. The data, collected with semi-structured interviews, were content-analyzed by coding data, identifying and relating the categories and sub-categories, that is, open, axial and selective coding were conducted respectively. Accordingly, the following main categories were developed from the coding lists: English background, evaluation of the corpus tool, evaluation of the lesson, external factors on learning, comparison of corpus and the English textbooks, self-evaluation, evaluation of the teacher, evaluation of the classmates, attitude towards English, and advice on improving corpus-based learning. Most of the participants were indeed interested in learning English with corpus use in the future, but they first needed to develop their fundamental English knowledge. STRUCTURED ABSTRACT Funda DÜNDAR -Yunis ŞAHİNKAYASI -Hamide ŞAHİNKAYASI Turkish Studies International Periodical for the Languages, Literature and History of Turkish or Turkic Volume 12/34 processed with the tools must be appropriate in terms of the difficulty level of the language. Accordingly, lower achievers need to study with more basic language, so that they could interpret and understand easily. Otherwise, it could cause them to lose their motivation. To sum up, most of the participants were indeed interested in learning English with corpus use in the future, but they first needed to develop their fundamental English knowledge.