An analysis of prepositions errors in writing committed by native Persian-speaking students

Considering the importance of teaching Arabic language in Iran, this paper aims to describe and analyze the prepositions errors committed by native Persian-speaking students.
After the classification of the errors, based on occurrence origin, most errors were related to interlingua, then intralingual, and ambiguous ones.
Then the most of interlingua errorss are occurred in letter" ba" so that The ba has used instead on the "ela" ,"ala" , and "fee" because of its similarities in both Arabic and Persian. Also, in the intralingual errors, the most common mistakes related to the use of other letters-especially "ila", "Ala" and "Men" instead of the "Lam". this indicate that the learner was mistaken for the inadequacy of the use of the Arabic of prepositions.
al errors indicates that Iranian students of Arabic have been greatly influenced by the Persian language. In fact, they think in Persian, and then write in Arabic. One of the reasons is that Arabic learning, unlike English learning, is not much considered in the early ages, and according to linguists, the later the learning of a language, the greater the probability of interlingual errors . Another reason is that Arabic and Persian language are in two different language clusters .The Persian belongs to the Indo-European cluster and Arabic to Semitic cluster.