prep2-177

yunshishow

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？

大宝店小二

不对。把for...cool,这部分去掉也许你会看懂了，其实provided和milked都是holstein cow为受动者的行为，由farmer发出，所以用被动。

Sunnyxu0819

终于明白了，cool~

aeoluseros

谢谢斑竹的细心解答。
也就是说E中的 provided with high-energy feed, and milked regularly都是当形容词在用，而且与cool平行？

-- by 会员 yunshishow (2011/10/1 7:55:47)

嗯，对的:-D

yunshishow

谢谢斑竹的细心解答。
也就是说E中的 provided with high-energy feed, and milked regularly都是当形容词在用，而且与cool平行？

aeoluseros

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。