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Although ice particles in the upper atmosphere benefit Earth in that they reflect and absorb solar radiation, acting as a global thermostat and thus keeping Earth from either burning up or freezing over, they also accelerate the destruction of the ozone layer by reacting with chlorofluorocarbons (CFC's).

正确答案: A

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用一道PP3语法请教“夹心”问题

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楼主
发表于 2007-5-26 21:47:00 | 只看该作者

用一道PP3语法请教“夹心”问题

PP3

162. Although ice particles in the upper atmosphere benefit Earth in that they reflect and absorb solar radiation, acting as a global thermostat and thus keeping Earth from either burning up or freezing over, thev also accelerate the destruction of the ozone layer by reacting with chlorofluorocarbons (CFC's).

A. acting as a global thermostat and thus keeping Earth from either burning up or freezing over, they also accelerate

B. acting as a global thermostat and thus keeping Earth either from burning up or freezing over, while also accelerating

C. act as a global thermostat and thus keep Earth from either burning up or freezing over, while also accelerating

D. they act as a global thermostat that thus keeps Earth either from burning up or freezing over, even though it also accelerates

E. they act as a global thermostat to thus keep Earth from either burning up or freezing over, but they also accelerate

答案是A,但是我的疑问是一般—ing分词结构在句中,很容易有歧义。

这里acting as a global thermostat and thus keeping Earth,可能是-ING分词做定语就近修饰 solar radiation,而逻辑上应当修饰ice particles 。

沙发
 楼主| 发表于 2007-5-26 21:52:00 | 只看该作者

E。A new study of the 2000 United States presidential election, citing faulty voting equipment, confusing ballots, voter error, and problems at polling places, has estimated 4 million to 6 million votes had not been counted of the 100 million votes cast.

这是一道GWD题目,GWD1-29

下载版本的解说是

Ehad not been counted过去完成时没有根据;分词位置有歧义(所谓“夹心”,既可以作为定语修饰主语,又可以作为状语修饰后面的谓语estimated 后面少that

Ehad not been counted过去完成时没有根据;分词位置有歧义(所谓“夹心”,既可以作为定语修饰主语,又可以作为状语修饰后面的谓语estimated 后面少that

板凳
 楼主| 发表于 2007-5-26 22:00:00 | 只看该作者

而本人在陈向东上看见他对一道OG题目夹心问题的解说。

A, Beatrix potter, in her book illustrations,carefully coordinating them with her narratives, capitalized on her keen observation and love of the natural world.

CXD解释:-ing分词短语carefully coordinating them with her narratives,可以向前做定语,就近修饰illustrations,或者向后做状语修饰谓语动词capitalized,修饰对象有歧异。

比较了两种分词“夹心”的解释,我很奇怪,究竟这:-ing分词短语在句中,往前是就近修饰?还是修饰主语?

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