Book excerpt: This book investigates selected aspects of the grammatical development of Emirati Arabic, the variety of Gulf Arabic spoken in the United Arab Emirates and closely related to the varieties spoken in the rest of the Gulf States. While the acquisition of Arabic as a second language has been widely studied, first language acquisition of different Arabic dialects has received much less attention. Ntelitheos addresses this disparity by presenting a number of systematic studies on the acquisition of Emirati Arabic grammar based on a two-year longitudinal corpus of six children. He discusses the acquisition of the nominal domain, including definiteness and possession; the acquisition of verbal functional structure and agreement; and the acquisition of word order and negation in the syntactic domain. In addition, he defines several developmental stages for Emirati Arabic, based on established diagnostic tests. The discussion is framed within a general survey of the relevant literature in Arabic acquisition studies and combines new empirical data with rigorous discussion of several long-standing theoretical problems in the broader field of child language development.