This course presents the basic concepts of medieval Arabic grammatical thinking. Classes will be devoted to reading and analyzing texts dealing with fundamental issues in Arabic syntax. The texts will be taken from Sībawayhi’s al-Kitāb (8th century) and from Zamaxšarī’s Kitāb al-Mufaṣṣal (12th century) and Ibn Yaʿīš’s commentary (13th century). Among the topics to be discussed: verb complements, auxiliary verbs, the nominal sentence and conditional sentences. Special attention will be given to developments in theory and grammatical terminology throughout the years.