摘要：AbstractThe English present perfect is one of the most difficult grammatical items for the Persian EFL learners to comprehend. The current study examined whether an explicit grammar explanation would work for this grammatical item among sixty university level learners. Experimental group practiced the target structure with explicit grammar explanation and control group practiced the target structure in the same manner without explicit explanation. The statistical analysis revealed that a significant difference between the pre-test and immediate post-test was found in those who had explicit explanation prior to practice. However, the results of delayed post-test suggested that their comprehension is temporary.
