A lot of work has been done in the field of natural language processing (NLP) for ARABIC. Few researchers have tried hard to apply on ARABIC the methods of computational linguistics, as for example, Definite Clause Grammar (DCG) [I] and Augmented Transition Networks (ATN) [2]. Because there is not a modern linguistic model for ARABIC grammar within the frame of computational linguistics, the results achieved are not comparable with that achieved on ENGLISH. In this paper, we represent the phrase structures covering ARABIC. They are completely different from ENGLISH.