athur Rosi 2017 , "Diphthongs Pronunciation Problems of English Learners at Donnitory of SMA Sabilillah Sampang". Undergraduate , Thesis, English Teaching Learning Program (TBI), The State of Islamic College (STAIN) Pamekasan . Advisor: Mulyadi, S.S.,M.Pd. Keywords: Diphthongs, pronun ciation, probl em Learning foreign language has been already ordered by Prophet Muhammad Saw. As he said …