His old flat is smaller than his new one.
➔ His new flat is bigger than his old one.
His old flat is smaller than his new one.
➔ His new flat is bigger than his old one.
Giải thích: Đổi hướng so sánh “smaller” → thành “bigger”
Dịch: Căn hộ mới của anh ấy lớn hơn căn hộ cũ.