1. clothes, cloth, clothingclothes 统指各种衣服，谓语动词永远是复数；cloth 指布，为不可数名词，clothing是服装的总称。2. incident, accidentincident 指小事件,；accident 指不幸的事故。例：He was killed in the accident.3. amount, numberamount of 后接不可数名词；a number of 后接可数名词例：amount of money；a number of students4. family, house, homehome指家，包括住处和家人，house 房子，住宅，family 家庭成员。例：My family is a happy one.5. sound, voice, noisesound 自然界各种各样的声音，voice 指人的嗓音，noise指噪音 。例：I hate the loud noise outside.6. photo,
