إن مصر وطن عظيم ما إعراب الجمله

The sentence “إن مصر وطن عظيم” is analyzed as follows: “إن” is a preposition without a specific function in the sentence structure. “مصر” is a noun in the accusative case with the sign of its case being a visible fatha on its end. “وطن” is a predicate of “إن” in the nominative case with the sign of its case being a visible damma on its end. “عظيم” is an elevated adjective with the sign of its case being a visible damma on its end.