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标题: PREP语法(findjuhl整理的55题) [打印本页]

作者: adpang 时间: 2006-12-5 10:01
标题: PREP语法(findjuhl整理的55题)

55. 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. while at the same time they have introduced some 100,000 dangerous chemical pollutants, having
B. while at the same time introducing some 100,000 dangerous chemical pollutants that have
C. while they have introduced 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 pollutant, having

answer B

划线部分的while后introducing some 100000 dangerous chemical pollutants是什么成分？　while 之后对句子结构有什么要求？做题时候就是以为while之后要跟句子才没有选B

基础太差。。。。

作者: adpang 时间: 2006-12-5 11:08
UP

作者: adpang 时间: 2006-12-6 12:42

再UP

作者: adpang 时间: 2006-12-9 13:04

再再顶，呼唤NN

作者: abort 时间: 2006-12-9 15:08
不是nn，但是记得某个讲过，while引导从句时，如果主从句主语一致，且从句谓语又含有be，那么while之后可省略主语＋be，讲动词改为ving形式，但是这里的谓语含有have，那不知道是不是应该说谓语含有助动词的时候可以这样改！继续讨论

作者: fiftycents86 时间: 2006-12-9 15:56
having在Gmat中不可做动词ing形式出现,出现必错,要把其改为that+从句形式, while后可以跟v+ing形式,而but后不可以

作者: fansiyg 时间: 2007-7-6 17:22
请看OG10 233的C选项，说得很清楚了

作者: benja 时间: 2007-7-18 21:49

问下，since they were developed more than 50 years ago.

这个they指代的是什么？

作者: lachance 时间: 2007-7-31 21:06

以下是引用benja在2007-7-18 21:49:00的发言：

问下，since they were developed more than 50 years ago.

这个they指代的是什么？

指代主语的主语

Industrialization and modern methods

作者: onward123456 时间: 2007-9-12 21:51

以下是引用lachance在2007-7-31 21:06:00的发言：

指代主语的主语

Industrialization and modern methods

根据答案，我觉得此处they应该指代pollutants吧。因为that后整个是修饰pollutants的。所以不能选A，因A中第一个they指的是主句主语：industrialization and modern methods

while at the same time introducing some 100,000 dangerous chemical pollutants that have gone virtually unregulated since they were developed more than 50 years ago.

请nn指正！

[此贴子已经被作者于2007-9-12 21:51:55编辑过]

作者: rita0316 时间: 2011-8-6 10:29
弱问一下，C问什么不对，是因为which可能修饰的是time吗？

作者: xuanmo 时间: 2013-9-4 18:28
求 they 到底指代什么………………

作者: DANIELLLLLL 时间: 2014-11-15 14:49
but是连词，要求前后平行，前边是谓语动词have improved,后边是分词introducing,因此排除D,E;
having 有修饰they,而不是pollutant的歧义，排除A；
which非限定修饰pollutant,错；另外，while they have 相对wordy.,排除C.
the best answer is B.

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