The last decades witnessed the significant impact of using corpora on linguistics and language education. Particularly, the introduction of the direct application of corpora and Data-Driven Learning (DDL) has brought helpful tools in learning and teaching languages. This study investigated the effect of using corpora on teaching the confusing grammatical constructs, gerunds and infinitives, to EFL students. Further, the study  explored EFL students’ perceptions of using corpora in learning grammar. The study adopted a mixed method research design involving a triangulation of quantitative and qualitative data collection methods. A proficiency test and pre- and post-tests were administered to 89 sophomore EFL students. Further, a questionnaire and semi-structured interviews were used to explore EFL students’ perceptions of using corpora in learning grammar. The results indicated a statistically significant difference between the control and experimental groups in favor for the group that received corpus-based instruction of gerunds and infinitives. In addition, the results showed students’ positive perceptions of the use of corpora in learning grammar. The study concluded with some recommendations for ELT instructors and curriculum designers.

Keywords: grammar; EFL; DDL; corpora; corpus; gerunds; infinitives; instruction

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