This is the 149th most frequent Urdu word.
کرتا
"Karta" in English means "doer" or "the one who does."
The word 'کرتا' in this sentence indicates an action being performed by a male subject, in this case, studying.
میں پڑھائی کرتا ہوں۔
I study.
Here, 'کرتا' is used to describe a habitual action in the past performed by a male subject.
وہ فٹبال کھیلتا کرتا تھا۔
He used to play football.
In this example, 'کرتا' is used to form a question about a regular action performed by a male subject.