“1) 如果前面是主系表结构，由于系动词是一个状态不存在“被伴随”，但是V-ing结构依然修饰的是整个主系表结构，所以后面的V-ing结构也可以被解读为修饰前面的名词成分—主语（如果宾语是名词，也一同修饰，因为主系表结构中主语和宾语所指是同一事物--见OG10-39, OG11-24中对正确选项C的解释）。”
但是主系表结构可以是否定句啊，她的主语和宾语就不是同一事物了啊，这个时候结尾加逗号用现在分词是不是一定是有歧义的？或者就是在主系表肯定句中，主句有很多名词，又怎么判断现在分词修饰主语还是就近修饰？
例如prep07
80.(28875-!-item-!-188;#058&003751)
Changes in sea level are not only a result of changes inwater temperature, affecting water density,but of melting glaciers as well.
(A) are not onlya result of changes in water temperature, affecting water density, but ofmelting glaciers as well
(B) not only resultfrom changes in water temperature, which affect water density, but also when glaciers melt
(C) are a resultnot only of changes in water temperature, which affect water density, but alsothe melting glaciers
(D) result notonly from changes in water temperature, which affect water density, but alsofrom the melting ofglaciers
(E) result fromnot only changes in water temperature, affecting water density, but as well as when glaciers melt
A选项中主要错误是不平行，但是这个affecting用法没有歧义么？07笔记上写的是“选项A与E中的分词结构affecting…在该句中是做后置定语修饰紧临的名词temperature的。”
在时态没有问题的情况下，如何肯定现在分词是后置定语？
我似乎还发现一个主系表结构中，现在分词不修饰任一个主句名词，似乎是伴随结果
也是prep07 83.(29013-!-item-!-188;#058&003802)
Stock levels for domestic crude oil are far lower than inpast years, leaving domestic oil prices vulnerable to any hintsof oil supply disruptions in the Middle East or any unexpectedgrowth in consumer demand that might beprompted bycolder-than-normal temperatures.
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发表于 2011-5-17 19:58:08
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