This is the 8176th most frequent Turkish word.
matteo
The word "matteo" is not a Turkish word. It is an Italian name.
In this sentence, 'Matteo' is used as a proper noun, specifically as someone's name to specify the person who is learning a new language.
Matteo yeni bir dil öğreniyor.
Matteo is learning a new language.
Here, 'Matteo'nun' denotes possession or association, indicating that the studying is attributed to Matteo. This shows ownership or connection.
Matteo'nun ders çalıştığını duydum.
I heard that Matteo is studying.
In this example, the name 'Matteo' specifies the subject performing the action of speaking, identifying the speaker and their activity.