This is the 7466th most frequent Turkish word.
görevlerini
"Duties" or "tasks."
In this sentence, "görevlerini" is used in the accusative plural form referring to "his tasks," completing a direct object.
Ali görevlerini tamamladı.
Ali completed his tasks.
Here, "görevlerini" again assumes the accusative plural form and refers to "their tasks," as objects of the action described.
Öğrenciler görevlerini yerine getirmek için çalışıyorlar.
The students are working to fulfill their tasks.
"Görevlerini" in this sentence indicates "their duties" and serves as the direct object of the verb action to meticulously analyze.