This is the 80th most frequent Marathi word.
असण
The Marathi word "असण" means "to be" in English.
In this sentence, 'आहे' is used as the verb form of 'असण' to denote a state of being good at studies.
तो अभ्यासात खूप चांगला आहे.
He is very good at studies.
In this context, 'असते' (a derivative of 'असण') is used to indicate possession or availability of a book.
तुला पुस्तक वाचायला असते का?
Do you have a book to read?
Here, 'आहे' is used to describe the presence or existence of the temple in the village.