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答案 1.months [名词的复数。] 2.Mr.White's [名词后加's表示住所或营业场所。] 3.editors-in-chief [复合名词的复数形式的变化以核心名词为主。] 4.heroes [hero，tomato，potato，negro以o结尾的名词复数加es。] 5.experiences [experience表“经验”时是不可数名词；而表“经历”时，是可数名词。] 6.magazine [名词作定语，表示类别。] 7.22-year-old [复合名词作形容词时，核心名词无复数。] 8.wealth [抽象名词无复数形式。] 9.teas [物质名词转换为普通名词有复数形式。] 10.failure [抽象名词具体化表“失败的人”。] Ⅲ.正反探究 1.【误】 There is fierce competition between the three shoes shops in the street. 【正】 There is fierce competition between the three shoe shops in the street. 解析 此处指商店的性质，用名词的单数形式作定语。 2.【误】 He works in a child hospital. 【正】 He works in a children's hospital 解析 有些名词作定语表示名词的适用范围时，习惯上用名词复数的's 所有格形式。如：a children's magazine(＝a magazine for children)；men's clothes (＝clothes for men)。 3.【误】 The manager has got a good business idea，so the company is doing well. 【正】 The manager has got a good business sense，so the company is doing well. | 
