Nahw Basics: How Arabic Sentences Work

Nahw is the Arabic science of syntax — how words combine into sentences, and how a word’s ending changes depending on its grammatical role. Two basic building blocks are worth knowing before reading any Qur’anic Arabic text more closely.

The first is the distinction between a nominal sentence (jumlah ismiyyah) and a verbal sentence (jumlah fi’liyyah). A nominal sentence starts with a noun and typically describes a state (e.g. “Allah is All-Knowing”). A verbal sentence starts with a verb and typically describes an action or event (e.g. “He created the heavens”). This isn’t just stylistic — classical exegetes pay close attention to which structure the Qur’an uses at a given point, because a nominal sentence in Arabic often signals something ongoing, established, or permanent, while a verbal sentence often signals a specific, completed, or occurring action. Surah al-Fatihah opens with several nominal sentences describing Allah’s permanent attributes (“Ar-Rahman, Ar-Raheem”) before shifting to verbs describing the believer’s own action (“we worship”, “we ask for help”).

The second is i’rab: the case-ending system that marks a word’s grammatical role — roughly, whether it is a subject, object, or in a possessive/prepositional relationship — through a change in the final vowel sound. This is largely invisible in unvowelled written Arabic and in most translations, but it is precisely the layer of meaning that recitation and tajweed preserve, and that the earliest grammarians worked to protect from being lost or mispronounced as Arabic spread beyond its native speakers.

These two ideas — sentence type and case-ending — are the starting point of Nahw, and the foundation for everything else built on top of them, including the more detailed grammar covered progressively in our Qur’an Reading & Tajweed course.