我老分不清 doesn't isn't ,例如he doesn't apologize for

问题描述:

我老分不清 doesn't isn't ,例如he doesn't apologize for
我老分不清 doesn'tisn't ,例如he doesn't apologize for being late我填成isn't, 有什么语法关系吗

当后面有动词时是doesnot,后面是形容词名词时写isnot如果动词是过去分词时,可能是被动语态,考虑isnot还有不懂得么可以继续解释