Khalaf MK. English Grammatical Morphemes 1({-s pl.}, {-s ps}, and {-s 3d}) by Iraqi EFL Learners: A Case Study. JLS [Internet]. 2023 Aug. 13 [cited 2025 Oct. 14];1(3):17-31. Available from: https://jls.tu.edu.iq/index.php/jls/article/view/49