Negative て-form: な-Adjective じゃなくて JLPT N5
The negative て-form of the copula, for joining and correcting.
Formation
な-Adjective / Noun + じゃなくて (formal: ではなくて).
Explanation
じゃなくて is the て-form of the negative copula じゃない, used to join clauses and to correct: 'A じゃなくて B' means 'not A, but B'.