This is the 17334th most frequent Turkish word.
öğretmenine
"To your teacher."
The word 'öğretmenine' is in the dative case here, indicating the direction of the action towards 'his teacher'.
O, öğretmenine yardım etmek istedi.
He wanted to help his teacher.
In this sentence, 'öğretmenine' also takes the dative case, showing who receives the action, the teacher.
Öğrenciler, öğretmenine teşekkür etti.
The students thanked their teacher.
Here, 'öğretmenine' again demonstrates the dative case usage to indicate the recipient of the gift, the teacher.