Plain form + のに

Nghĩa: although / even though (contrary to expectation)
Cấu trúc (Formation): V plain / i-adj + のに (勉強したのに, 高いのに). Na-adj / noun + な + のに (静かなのに, 学生なのに). Note: な, not だ.
Độ trang trọng: neutral