Semiotic Function of Non - gentive Letters to Understand Syntactic Structure in the framework of Razi Astarabadi

«Passive Letters» refer to the elements that do not have Erab influences and for this reason they are often ignored ignored in syntax education. Studies show that these letters play a key role in identification of syntactic structure and understanding the meaning of context being called the semiotic function of passive letters. Although sometimes in syntax they are called Maani –Al- horouf (the meanings of letters) however, an organized review of their semiotic functions in order to understand their syntactic structure and accurate meaning of their context has not been studied yet. In the view of RaziAstarabadi‚ semiotic and structural aspects of afore mentioned letters, are considered as a part of their syntactic function. According to the importance and extension of the presence of these letters in Arabic language‚ and by applying RaziAstarabadi’s views‚ this study tried to indicate their semiotic function in understanding the syntactic structure and answer the question of research based on a semiotic perspective, what is the most obvious sign of semiotic function of these letters in understanding the syntactic structure and context perception? To answer the questions with descriptive-analytic method, we investigated the different contexts and applied this view in analysis. The results showed that: passive letters play a key role in identification of the syntactic structure and showed a certain relationship between cause and effect in two parts of form and content and accordingly its major semiotic function can be found in distinguishing and diagnosis of grammatical arrangement of words and sentences.