一道居然没有被NN讲解过的难题: PREP 58

xdffans

原来有一些新手们自己的解释, 都不够convincing. 请教NN出手点拨一二.

58. Diesel engines burn as much as 30% less fuel than gasoline engines of comparable size, as well as emitting far less carbon dioxide gas and far fewer of the other gasses that have been implicated in global warming.

A  of comparable size , as well as emitting far less carbon dioxide gas and far fewer of the other gasses that have

B of comparable size, as well as emit far less carbon dioxide gas and far fewer of the other gasses having

C of comparable size, and also they emit far fewer carbon dioxide and other gasses that have

D that have a comparable size, and also they emit far fewer of the other gasses having

E that have a comparable size, as well as emitting far fewer of the other gasses having

 

A: correct

B: as well as emit如果和burn平行，应该没有前面的逗号，如果做伴随状语应该改emitting；having been implicated，分词的完成时态不能说定语

C: fewer 修饰可数名词

D: that have a有点啰嗦；having… 啰嗦

E: 同上

 

注意：

1、as well as的用法，一种用来做连词，此时要求前后词语平行对称，一种用来做介词表示In addition to，后面要跟动词得分词形式，一般位于句尾表示伴随状态。

为什么不是B而是A???

lanseb8ma

as well as不像and，作为连词既能连接词和短语，又能连接句子（两个并列的动词，并且词态相同），用作连接句与句时好像只能表伴随吧，所以后面要接动名词；至于后面部分，可以接受B的解释——完成时态不能作定语，也可以这样理解：后面是完整的从句结构，所以用定语从句比用分词修饰好。

xdffans

谢谢二楼! 但我已经得到了N人的指点 - 超正点的解释,与大家共享

这道题目的关键在于看清楚动词的动作发出者。

a和b的区别就在于emit这个动作发出者，如果选择b就成了和burn呼应，这样的话就成了diesel engines来emit二氧化碳和other气体了，如果用a的emitting的话，就是说“diesel engines燃烧fuel’的这样是轻重emit出了二氧化碳。

根据生活中的常识，‘engine自己直接释放二氧化碳和其他气体’相对于‘engine在燃烧燃料的过程中释放二氧化碳和其他气体’，前者不够精确。

lanseb8ma

It makes sense. And this point is a hotspot in GMAC's pool of difficult SC questions. Pay attention!