恨鐵不成鋼（恨鐵不成鋼）　

◎ 恨鐵不成鋼 hèn tiě bù chéng gāng

[wish iron could turn into steel at once;(fig) set a high demand on somebody in the hope that he will improve] 比喻對人抱著很大的希望,恨他不長進

這種愛有時候是以恨的形式表現(xiàn)的,這是“恨鐵不成鋼”的恨,不是“仇恨”