Mar7aban! 'Darasa' is, of course, the verbal noun, or masdar of the verb 'darasa', to study. Darasa is a NOUN. It refers to the activity of studying. Since it is a noun, I can use it as I would any other THING. I can say, "I like studying", just as I could say, "I like books." O7eb ad darasa. = I like studying. Ad darasa mumt3a. = Studying is enjoyable. In Arabic, every noun is either masculine or feminine. The noun 'darasa', just happens to be feminine and must be treated that way.

التاء المربوطة(الحرف الأخير من هذه الكلمة) تفيد التأنيث خذيها قاعدة: أي كلمة تنتهي بتاء مربوطة فهي مؤنثة