标题: 怎么都想不明白的一个题目 [打印本页] 作者: coocooper 时间: 2010-10-17 01:38 标题: 怎么都想不明白的一个题目 Industrialization and modern methods of insect control have improved the standard of living around the globe while at the same time they have introduced some 100,000 dangerous chemical pollutants, having gone virtually unregulated since they were developed more than 50 years ago.
A. .... B. while at the same time introducing some 100,000 dangerous chemical pollutants that have C. while they have introuced some 100,000 dangerous chemical pollutants at the same time which have D. but introducing some 100,000 dangerous chemical pollutants at the same time that have E. but at the same time introducing some 100,000 dangerous chemical pollutants, having
答案是选B 它的解释是用了一个sb. do while doing 的结构，但是为什么这边while at the same time需要考虑的不是平行呢？ 我是出于平行的角度考虑的，所以选了A。 请大家指教！！作者: gkast 时间: 2010-10-17 09:15
Dangling modifier? A选项，having后面是指industrialization and modern methods (they)，但实制上它应该是指dangerous chemical pollutants。 所以E也可以排除。
而C, D，没有将at the same time放后面的。
请NN指正。作者: jbc88 时间: 2010-10-17 10:01
按照句意，dangerous chemical pollutants才是 having gone virtually unregulated 。
在A选项中， dangerous chemical pollutants却是宾语，而主语是Industrialization and modern methods。A的意思成了 Industrialization and modern methods having gone virtually.
你说 哎呀，我伴随状语呀，表示结果啊~
这也是我的问题， having unregulated 能表示便随状语吗？作者: jbc88 时间: 2010-10-18 11:24
看来 having unregulated是能表示伴随的。
Some patients who do not respond to therapies for depression may simply have received inadequate treatment, having, for example, been prescribed a drug at a dosage too low to be effective or having been taken off a drug too soon.
(A) having, for example, been prescribed a drug at a dosage too low to be effective or having been (B) having, for example, a drug prescription that was ineffective because the dosage was too low, or being (C) as, for example, having too low of a dosage of a prescribed drug for it to be effective, or being (D) when they have, for example, been prescribed too low a drug dosage for it to be effective, or were (E) for example, when they have a drug prescription with a dosage too low to be effective, or been