177. For the farmer who takescare to keep them cool, providing them with high-energy feed, and milkingthem regularly, Holstein cows are producing an average of 2,275 gallons ofmilk each per year. A. providing them with high-energy feed, and milking them regularly,Holstein cows are producing B. providing them with high-energy feed, and milked regularly, the Holsteincow produces C. provided with high-energy feed, and milking them regularly, Holsteincows are producing D. provided withhigh-energy feed, and milked regularly, the Holstein cow produces (E) E. provided with high-energy feed, and milked regularly, Holstein cows willproduce 答案E. A选项Holstein cows are producing现在完成时不对，是因为后面有each per year所以不能表示现在正在进行的状态么？还有前面的providing them with high-energy feed, and milking them regularly是不是对的？
1. 对，each per year表示普遍规律，要用will do，而不能用现在进行时。 2. "providing them with high-energy feed, and milking them regularly"不对 第一种理解：provding them和cool平行， 根据固定搭配：keep sb. + adj.把某人保持在某个状态，那么keep them providing them with high-energy feed，就是让cows保持给cows自己提供高营养事物，（并且需要用providing themselves，而不是them）；所以应该用provided，让cows保持被提供高营养食物。（所以关键还是用逻辑来解这个题，来判断是用Providing还是provided。） 第二种理解：providing them 和 takes/keep都平行。 根据平行的形式不同，它们是不平行的，所以第二种理解也被排除。
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发表于 2011-9-30 18:17:57
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发表于 2011-10-1 06:31:49
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