Abstract :
AbstractResearch has shown that phrasal verbs are very important in language use andespecially in writing These linguistic structures present serious challenges for L2learners because they are often language specific and enormous in number Due totheir difficulty it will be very helpful for language learning teaching to develop thesechallenging structures in academic writing This study explored the use of phrasalverbs PVs in a Persian EFL academic corpus in comparison with PV use in anEnglish academic criterion corpus by utilizing a written corpus of nationally andinternationally published research articles Two corpora of learner and criterion werebuilt in three main disciplines of engineering social sciences and basic sciences Thecorpora were compared using a quantitative method The current research followedtwo main phases 1 Identifying PVs used by Persian EFL writers versus Englishnative writers in different disciplines 2 Comparing the frequency of PVs used ineach corpus Our finding indicated some points Firstly the results show that thePersian writers use phrasal verbs less than the native writers in academic writing Secondly the result showed that the L1 factor do not play a key role in this respect Thirdly the avoidance of PV usage will diminish as proficiency increases Andfinally it showed that interdisciplinary variations positively affect learners performance regarding writing and using discipline specific words This studydelineates that writing instructors and syllabus designers need to concern with the useof PVs and calls forth the attention of researchers language instructors and materialsdevelopers towards this aspect of the English language Keywords Phrasal verbs Corpus Academic Language Phraseology EFL Learners vii
