OG 语文 第8题 对于E选项的理解不知道对不对

zcstc007

As the cost of wireless service has steadily dropped over the last year and as mobile phones have become increasingly common, many people are finding that they can avoid toll charges on their home phones, using their mobile phones for making long-distance calls at night or on weekends, at a time which many wireless companies provide unlimited airtime for a small monthly fee.

A.phones, using their mobile phones for making long-distance calls at night or on weekends, at a time which
B.phones, instead using mobile phones to make long-distance calls during the night or weekends, during which
C.phones by using their mobile phones to make long-distance calls at night or on weekends, when
D.phones using mobile phones for making long-distance calls during the night or weekends, when
E.phones when using their mobile phones to make long-distance calls at night or on weekends, a time which
答案选C

对于E选项的错误， 官方解释是 When模糊了原文的意思
我的理解 E选项中when引导的从句没有主语所以错误。 我的理解对的吗是？？

DesmondWang

when的主语是they，S+V+O when +participle这个结构，when participle是可以做adverbial modifier，可以修饰句子谓语，所以逻辑主语是preceding clause的主语
这道题主要的错误在于，when改变了句意，原意是要表达“通过。。。人们可以减少费用”，是要表达how people avoid toll charges；而不是“当。。。的时候，人们可以减少费用”，这感觉像是在阐述一个因果关系。——when X，Y（Y when X）这样的结构有阐述“X creates Y's happening”的意思。
个人看法，仅供参考~

kiwifoodtown

方式状语和时间状语是完全不同的！

zcstc007

when的主语是they，S+V+O when +participle这个结构，when participle是可以做adverbial modifier，可以修饰句子谓语，所以逻辑主语是preceding clause的主语
这道题主要的错误在于，when改变了句意，原意是要表达“通过。。。人们可以减少费用”，是要表达how people avoid toll charges；而不是“当。。。的时候，人们可以减少费用”，这感觉像是在阐述一个因果关系。——when X，Y（Y when X）这样的结构有阐述“X creates Y's happening”的意思。
个人看法，仅供参考~

-- by 会员 DesmondWang (2012/12/3 13:20:06)

3Q。。哎，  语法不好的人多看到几天语法就麻木了。。 明白了。