The use of phrasal verbs is problematic for Iranian EFL learners. Accordingly, the present studyinvestigated the performance of Iranian intermediate and advanced EFL learners in separable andinseparable verbs. The total population of the study was one hundred female Iranian EFLlearners who studied English as foreign language in Kaj language institute in Qazvin, Iran. Theparticipants were all female EFL learners and varied in age from sixteen to twenty. Out of ahundred EFL learners, fifty learners were selected to participate in the present study after thehomogenization test (the vocabulary test). The homogenized EFL learners were divided into twointermediate and advanced groups. The instruments were English vocabulary and two posttestsof separable and inseparable verbs. Paired-samples T-test was used for analyzing the collecteddata. The ultimate result of the present study showed that the Iranian intermediate and advancedEFL learners had a better performance on inseparable verbs in comparison with separable verbs. پرونده مقاله