transitivity effect on sentence structure in Persian

In functional perspective transitivity is explained through functional and semantic factors، and is considered as a cline. This article investigates transitivity effect on Persian morpho-syntax in cases like noun incorporation، and non-passivity of verbs based on prototypical definition of transitivity and its important related studies. Also، transitivity prominence in Persian will be studied in comparison with Haspelmat´s studied languages. Then، transitivity effect will be investigated in discourse level on two folk short stories. The data show that in morpho-syntax level، transitivity decline leads to the emergence of incorporation constructions، and in case of passive construction، non-passive state verbs have low transitivity. Transitivity prominence is rather low in Persian compared to Haspelmat´s studied languages، And in discourse level high transitivity is correlated with foregrounding and low transitivity with backgrounding.