这道题其实我选了D,正确答案A一看有点不可思议,确实后来想想是对的。
个人简单来分析一下D为什么错:
As criminal activity on the Internet becomes more and more sophisticated, not only are thieves able to divert cash from company bank accounts, but also pilfer valuable information such as business development strategies, new product specifications, and contract bidding plans to sell the data to competitors.
这里确实可以跟og一样,通过not only倒装后面部分补充subject来分析,但是就个人而言,还是不能接受的,这个grammar知识点太偏了,加上还要用not only...also...这样的变体,从语法分析难度太大。
那就从语义开始分析:
(1)D选项中个人觉得pilfer...to sell...这个关系可以接受,问题在于contract bidding plans to sell the data to competitors. 这里出现了歧义,to sell 究竟接的是contract bidding plans 还是pilfer valuable information?
这里如果要修饰后者,为了避免歧义,我觉得要在to 加逗号:变成...but also pilfer valuable information such as business development strategies, new product specifications, and contract bidding plans, to sell the data to competitors. 但是这样一来,又出现了歧义,to sell修饰整个句子,还是not only部分,还是but also部分?
这让我想起RON说过不要随便改句子的结构,你改的很难比正确答案更好,而且GMAT考察的是让你选择对的而不是改错的。因此上面仅出于理解为目的加了个逗号的分析,仅供参考。
(2)A选项中,这里用的...pilfer...such as X, Y and Z, and sell...的结构用的很好。这里 and前面加了个逗号,保证 是与pilfer平行(而不是 Z and sell这样出现歧义)而pilfer...and sell...这个结构跟(1)提到的结构一样也是可以接受的.
注意,GMAT有出现过关于 COMMA(逗号) +And的用法:
这个用法通常用于分开两个独立句子,用COMMA有助于将句子的logic表述清楚;但是如果不用COMMA也能将 “句1 +and +句2” 表述清楚那就不用COMMA
Australian embryologists have found evidence that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolving as a kind of snorkel. (正确答案是 suggesting that the elephant had descended from an aquatic animal with its trunk originally evolved)
尽管这个句子是错的,错误原因就不在这里分析了。但这个句子and前面的COMMA是不能省略的!
还有个RON提到过的小词改写:GMAT因为避免避免看上去奇怪的重复,会改写一些结构(如"X of Y of Z", "X that Ythat Z", "X to Y to Z",哪怕有一些改写后用法非常少见)看到有这些结构,而且还在两个选项中不摇摆不定的话,这个排除法可以作为一个小技巧(由于对词义的苛刻要求,也是GMAT的偏好)
...so prevalent that a squirrel was said that it could... 改写后:so prevalent that it was said a squirrel could...
in itsreturn in 1910–1911 改写后:in its return of 1910–1911(这里用of其实不常见)
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