The nominal sentence is one of the two types of sentence, which is the pole opposite the actual sentence, and for this reason its research remained when the ancient grammarians revolves in the orbit of the sentence in general, and did not receive an independent study by them.

   Due to the importance of the nominal sentence in the grammar lesson, this research deals with the study of the foundations laid by Arab grammarians to study and analyze the nominal sentence, as one of the two parts of the sentence in the Arabic language. He added to this the grammatical efforts of (Dr. Ibrahim Barakat) in his book (Arabic Grammar). The study begins by addressing the concept of the nominal sentence and the concepts of the subject  and the predicates, which are two pillars The nominal sentence, then identify the grammatical elements that occupy the function of the subject , including the explicit noun, the source, the pronoun and the conditions determined by others, then the study deals with the predicates of different types, between the singular and the sentence from (nominal sentence, actual sentence, conditional structure, order sentence, division sentence) and semi-sentence, and the different images  of each type that were received from the Arabs and analyzed grammatically. The study focuses on the study of the singular predicates as the basis in the nominal syntax, and is interested in determining the factors of validity of the syntax consisting of a subject and a single predicates, and there are two types of nominal sentence: First. The nominal sentence copied with the transcriber (if and her sisters), and secondly the actual sentence converted with the transcribed verbs (Kan and her sisters), and each part of this research ends with the opinions of (Dr. Ibrahim Barakat).