GMAT考试中代词及名词前后数量的不相匹配也是比较常见的一个错误：
◆ Confronted by radical changes in production and distribution, modern Hollywood studios are attempting various experiments in an effort to retain ITS status as the primary arbiter of movie consumption.
上例中its 指代modern Hollywood studios，但事实上，its 是单数而studios是复数，所以这句可以改成：
◆ Right: Confronted by radical changes in production and distribution, modern Hollywood studios are attempting various experiments in an effort to retain THEIR status as the primary arbiters of movie consumption.
◆ Right: Confronted by radical changes in production and distribution, the modern Hollywood studio is attempting various experiments in an effort to retain ITS status as the primary arbiter of movie consumption.
