Ahmed is theiruncle. (not “uncles” or“aunt”)
Sarah and Huda are their aunts. (not “aunt” or“uncles”)
The fullverb “BE” in this example onlyserves to join the subject and the complement together.
In this case, the full verb BE is called a Copulaنفس الفقره اللي كتبتها فوق هاذي تابعه لها ولا ننسى انه الفعل اللي يجي في جمله تابعه للفاعل نسميه كوبيلا