Abstract
 Many different opinions about Arabic grammar and variety of grammatical types have contributed to probabilistic orientations in Arabic grammar. The dominant logic amongst grammarians, which asserts syntactic rules are not fixed and unchangeable, has supported it . Speech depends on its context in the first place and is governed by a powerful network of verbal and semantic relationships . This research puts some syntactic issues in a new perspective that are deliberated by earlier grammarians. It focuses on the motives of grammarians for probability amongst different types of syndetic structures and how language users choose the closest type to the right choice without damaging the meaning or changing the grammatical coder rules of eloquence. The article progresses in two directions: the descriptive direction, which explains probability in language and the applicative direction, which explains how grammatical and syntactic forms ar used in action so that the most preferred form which fits the meaning and intention is chosen and used. Finally, the research emphasizes the importance of employing grammatical probability in all controversial linguistic issues and the necessity to take into consideration bothh the linguistic text and the semantic context.
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