@article{paperid:1025347, author = {Pishghadam, Reza and -, -}, title = {The Interaction of Lexical and Grammatical Aspects in English as a Foreign Language for Iranian Farsi Speaking Learners}, journal = {Mediterranean Journal of Social Sciences}, year = {2012}, volume = {3}, number = {1}, month = {January}, issn = {2039-9340}, pages = {149--156}, numpages = {7}, keywords = {Aspect Hypothesis; grammatical aspect; lexical aspect; perfective past tense; imperfective past tense.}, }