“homework”是不可数名词,其可数性由指代事物的本质特征决定。它表示“家庭作业”这一抽象整体概念,涵盖各类课后学习任务,无法被分割为独立个体,故无复数形式,不能直接用不定冠词“a/an”或数词修饰,需用“a piece of”“several pieces of”等结构体现数量,如“two pieces of homework”。常见错误如“I have three homeworks”源于混淆“任务数量”与名词可数性,正确搭配为“some homework”“too much homework”等...