一道PREP题求教!!

cutewen

In the major cities of industrialized countries at the end of the nineteenth century, important public places such as theaters, restaurants, shops, and banks had installed electric lighting, but electricity was in less than one percent of homes, where lighting was still provided mainly by candles or gas.

(A) electricity was in less than one percent of homes, where lighting was still

(B) electricity was in less than one percent of homes and lighting still

(C) there were less than one percent of homes with electricity, where lighting was still being

(D) there was less than one percent of homes that had electricity, having lighting that was still

(E) less than one percent of homes had electricity, where lighting had still been

考点: 句子结构（Grammatical Construction）主谓一致（Agreement）

1) 两个句子并列,第一个句子含有be动词,第二个句子中的be动词必须省略,同时,一些重复的名词或形容词也必须省略, 但是be功能不同时不能省略.

2) 单数复数: the percent of +可数名词复数形式, 谓语动词用复数

3) there be + n 句型中, be动词的单复形式由n的单复形式决定

4) 伴随状语不能修饰主句系动词

(A) 正确, 句子结构简洁; where就近修饰homes, 符合逻辑意思

(B) and lighting still provided省略了was, 因为这里was作为助动词,而前一个并列句的was是系动词,功能不同,不能省略.

(C) where语法上就近修饰electricity,导致逻辑错误; being多余

(D) was应该改为were, 因为one percent of homes是复数名词; having… 修饰对象不清楚。

(E) where语法上就近修饰electricity,导致逻辑意思错误；had been过去完成时态错误。


此题虽然做对了  可是对于B选项那个WAS的解释不太明白！
有筒子明白的吗？讲解一下！~谢谢！

遗失的紫水晶

刚巧瞄见~~战友~~~

并列句中的was等词如果作用不同时不能省略的。比如说这道题，B项中
第一个was是系动词，可以理解为“是”，而第二个省略的was是被动语态中的补全是
lighting still was provided by .....  这个was就是助动词啦。所以两个was作用不同不能省。  

gmat好像很爱考这种题。比如说  I was tired and unable to get home。 这句话也是错的。应为be unable to do 是一个完整词组，不能把was省了。。要补出was
解释的不好请见谅，我也是前几天搞懂的~~~

葛佳

canols

你举的例子中was功能不是一样么，我怎么觉得你的例子是正确的

刚巧瞄见~~战友~~~

并列句中的was等词如果作用不同时不能省略的。比如说这道题，B项中
第一个was是系动词，可以理解为“是”，而第二个省略的was是被动语态中的补全是
lighting still was provided by .....  这个was就是助动词啦。所以两个was作用不同不能省。  

gmat好像很爱考这种题。比如说  I was tired and unable to get home。 这句话也是错的。应为be unable to do 是一个完整词组，不能把was省了。。要补出was
解释的不好请见谅，我也是前几天搞懂的~~~

-- by 会员 遗失的紫水晶 (2010/6/2 21:07:05)

遗失的紫水晶

对，这个例子中的was是一样的，我只是想说明另一种情况，就是be动词是短语中的时不能省~~~我记得我碰到过这个题。。。