Case Comparison: Singular to Dual

Grammatical Case of Dual Nouns

● Compare the three cases of a singular noun with the dual forms:

Case
Singular
Dual

Nominative
رَجُلٌ
رَجُلَانِ (with alif and nūn)

Accusative
رَجُلًا
رَجُلَيْنِ (with yāʾ and nūn)

Genitive
رَجُلٍ
رَجُلَيْنِ (with yāʾ and nūn)

● In the dual, the endings ـَانِ and ـَيْنِ take the place of the singular vowel marks.