Arabic grammar () is the grammar of the Arabic language. Arabic is a Semitic language and its grammar has many similarities with the grammar of other Semitic languages. Classical Arabic and Modern Standard Arabic have largely the same grammar; colloquial spoken varieties of Arabic can vary in different ways.
The largest differences between classical and colloquial Arabic are the loss of morphological markings of grammatical case; changes in word order, an overall shift towards a more analytic morphosyntax, the loss of the previous system of grammatical mood, along with the evolution of a new system; the loss of the inflected passive voice, except in a few relict varieties; restriction in the use of the dual number and (for most varieties) the loss of the feminine plural. Many Arabic dialects, Maghrebi Arabic in particular, also have significant vowel shifts and unusual consonant clusters. Unlike in other dialects, first person singular verbs in Maghrebi Arabic begin with a n- (ن). This phenomenon can also be found in the Maltese language, which itself emerged from Sicilian Arabic.
History
The identity of the oldest Arabic grammarian is disputed; some sources state that it was Abu al-Aswad al-Du'ali, who established diacritical marks and vowels for Arabic in the mid-600s, Others have said that the earliest grammarian would have been Ibn Abi Ishaq (died AD 735/6, AH 117).
The schools of Basra and Kufa further developed grammatical rules in the late 8th century with the rapid rise of Islam, using Quran as the main source for Arabic grammar rules. From the school of Basra, generally regarded as being founded by Abu Amr ibn al-Ala, two representatives laid important foundations for the field: Al-Khalil ibn Ahmad al-Farahidi authored the first Arabic dictionary and book of Arabic prosody, and his student Sibawayh authored the first book on theories of Arabic grammar. From the school of Kufa, Al-Ru'asi is universally acknowledged as the founder, though his own writings are considered lost, with most of the school's development undertaken by later authors. The efforts of al-Farahidi and Sibawayh consolidated Basra's reputation as the analytic school of grammar, while the Kufan school was regarded as the guardian of Arabic poetry and Arab culture. The differences were polarizing in some cases, with early Muslim scholar Muhammad ibn `Isa at-Tirmidhi favoring the Kufan school due to its concern with poetry as a primary source.
Early Arabic grammars were more or less lists of rules, without the detailed explanations which would be added in later centuries. The earliest schools were different not only in some of their views on grammatical disputes, but also their emphasis. The school of Kufa excelled in Arabic poetry and exegesis of the Qur'an, in addition to Islamic law and Arab genealogy. The more rationalist school of Basra, on the other hand, focused more on the formal study of grammar.
Division
For classical Arabic grammarians, the grammatical sciences are divided into five branches:
(language/lexicon) concerned with collecting and explaining vocabulary. (morphology) determining the form of the individual words. (syntax) primarily concerned with inflection (). (derivation) examining the origin of the words. (rhetoric) which elucidates stylistic quality, or eloquence.
The grammar or grammars of contemporary varieties of Arabic are a different question. Said M. Badawi, an expert on Arabic grammar, divided Arabic grammar into five different types based on the speaker's level of literacy and the degree to which the speaker deviated from Classical Arabic. Badawi's five types of grammar from the most colloquial to the most formal are Illiterate Spoken Arabic ( ), Semi-literate Spoken Arabic ( ), Educated Spoken Arabic ( ), Modern Standard Arabic ( ), and Classical Arabic ( ).
Phonology
Classical Arabic has 28 consonantal phonemes, including two semi-vowels, which constitute the Arabic alphabet.
It also has six vowel phonemes (three short vowels and three long vowels). These appear as various allophones, depending on the preceding consonant. Short vowels are not usually represented in the written language, although they may be indicated with diacritics.
Word stress varies from one Arabic dialect to another. A rough rule for word-stress in Classical Arabic is that it falls on the penultimate syllable of a word if that syllable is closed, and otherwise on the antepenultimate.