版主请进！！PREP语法 第80题与83题 解释是否矛盾？

81. (28921-!-item-!-188;#058&003760)

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
                

83. (29013-!-item-!-188;#058&003802)

Stock levels for domestic crude oil are far lower than in past years, leaving domestic oil prices vulnerable to any hints of oil supplies being disrupted in the Middle East or to any unexpected consumer demand growth possibly prompted by colder-than-normal temperatures.

(A) leaving domestic oil prices vulnerable to any hints of oil supplies being disrupted in the Middle East or to any unexpected consumer demand growth possibly

(B) leaving domestic oil prices vulnerable to any hints of oil supply disruptions in the Middle East or any unexpected growth in consumer demand that might be

(C) leaving domestic oil prices vulnerable to any hints of oil supplies that are disrupted in the Middle East or to any unexpected growth in consumer demand as was possibly

(D) resulting in the fact that domestic oil prices are vulnerable to any hints of oil supplies being disrupted in the Middle East or to any unexpected consumer demand growth possibly

(E) resulting in the fact of domestic oil prices that are vulnerable to any hints of oil supply disruptions in the Middle East or to any unexpected growth in consumer demand that might be

考点: 简洁有效（Rhetorical Construction）
                

1) being错误使用: 以下几种表达中being属于多余
                

a) being + n. b) being + adj. c) as being + n./adj./v-ing

2) as不能作为关系代词引导定语从句, 关系代词正确的使用:that(指代人,GMAT语法中that不能指代人),which(指代物),who(指代人,主格),whom(指代人,宾格),whose(指代人或物)

(A) being多余,应该删除；分词后置定语promped…就近修饰growth不符合逻辑。
                

(B) 正确, leaving伴随结果做状语修饰主语,结构简洁; that从句修饰consumer demand符合语法要求
                

81题说伴随状语不能修饰主句系动词，也就是系动词后面不能跟伴随，但是83题，leaving做伴随，修饰的就是系动词。

这里是否矛盾？

盼哪位大侠解答

对于81题来说只有D存在状语修饰的问题，81题中现在分词作状语在句末修饰是很容易引起歧义的，因为他的逻辑主语可以是主句的主语，或者是前面整句，在少数情况下会是宾语。

83题就是一个分词作状语修饰前面整句的情况。逻辑主语就是前面整个句子的意思。

伴随状语的确是不会去修饰系动词，但是出不出现在这类主句之后是不会影响的。

一般非谓语，逻辑主语都是主句的主语....逻辑主语怎么会是前面整个句子呢？

81题是用having与was并列，二者主语相同，是伴随状态。

而83题是伴随结果，不与前面的are并列，白勇说这种情况是无逻辑主语的。但是我通常认为主语就是前面的句子，因为是前面句子中的情况，导致了一个结果。

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