改过[gǎi guò]
词典reform：改革，改良，改造；改正。
词典改过的近义词
词典mend one's ways：改过；卖刀买犊；归正；改恶从善。
词典correct one's mistakes：改过。
词典penitence：悔过；忏悔，赎罪。
改过是什么意思
mend one's ways; correct one's mistakes:
例：他确有改过表现。
He has really corrected his mistakes.