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(duì)人抱著很大的希望,恨他不長(zhǎng)進(jìn)

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