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题库 / Prep2007E1-SC-82
Each year companies in the United States could save as much as $58 billion annually by preventing illness among employees and gain as much as $200 billion through improving performance of workers if they simply provided offices with cleaner air.
annually by preventing illness among employees and gain as much as $200 billion through improving performance of workers if they simply provided
annually if they prevented employee illness and gain as much as $200 billion through worker performance improved by simply providing
annually in employee illness prevention and gain as much as $200 billion through worker performance improved by simply providing
in employee illness prevention and gain as much as $200 billion through improving performance of workers if they simply provided
by preventing illness among employees and gain as much as $200 billion through improved worker performance if they simply provided
through后面的improve为什么不用ing形式而是用ed形式呢
个人愚见，从两个方面解释下：
1、through的用法。through作介词表达“通过、凭借”的意思时，少见+doing的形式，一般为through the method/relationship/person等具体的名词短语，私以为“通过做……”有更好的表达像by+v-ing，这应该还是语言习惯；
2、核心词的问题。through improved worker performance和through improving performance of workers的核心词有明显的不同，前者强调的是“worker performance员工绩效”，后者则强调improving这个动作，这里更合理的理解应该是“公司如果仅仅为办公室提供更清洁的空气，就可以通过提高 的 员工绩效获得2000亿” ，而不是“就可以通过提高员工绩效获得2000亿” ，可以察觉到两者细微的差别。 前者ed形式表被动，作定语修饰绩效的性质，表达了“提高”是前面条件状语的结果的意思；后者ing形式表主动，表达了“提高员工绩效”还要施加其他的动作，提供清洁空气还不够。
核心词的解释挺有道理的
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