对于which用法的一个疑问，恳请各位大佬帮忙解释一下

曾屁股捷

Unlike other Mayan cities, Cancun's commercial power throughout the lowlands seems to be from using its strategic position at the foot of the highlands, which were a source of jade, obsidian, and other valuable commodities.

A. Cancun's commercial power throughout the lowlands seems to be from using its strategic position at the foot of the highlands, which were a source of jade, obsidian, and other valuable commodities

B. Cancun's commercial power throughout the lowlands seems to have come from using its strategic position at the foot of

the highlands, a source of jade, obsidian, and other valuable commodities   

C. the commercial power of Cancunthroughout the lowlands seemed to have come from using its strategic position at the foot of the highlands, a source of jade, obsidian, and other valuablecommodities  

D. Cancun seemedto be using its strategic position at the foot of the highlands, which was asource of jade, obsidian, and other valuable commodities, in becoming acommercial power throughout the lowlands

E. Cancun seems to have used its strategicposition at the foot of the highlands, a source of jade, obsidian, and other
valuable commodities, to become a commercial power throughout the lowlands

RON大神的解释是说，D选项中的which修饰前面的highlands，第一个是meaning不对，第二是highlands是复数，动词的单复数也错了。但是RON有一期课讲“which”的用法时好像说过，which是可以修饰the NOUN + PRE PHRASE that immediately precedes the comma。那D选项中为什么不能理解成which是修饰strategic position（noun）+ at the foot of the highland (pre phrase)呢？

哈哈小池

同问

HoganTong

首先，D选项中which修饰的是foot of the highlands，而不是strategic position at the foot of the highlands（战略位置能是source吗？显然地理位置才能是source），也不是highlands，我翻了下manhattan论坛上Ron的回复，Ron也没有说which修饰highlands。但是Ron说了，noun + prep phrase虽然可以用which修饰，但比较少见，尽量避免。所以E选项中用同位语a source来引导是更好的，但这不是选E的最关键的理由。D选项的句子结构式use its position in becoming，英语里没有这种说法，应该是use sth to do sth，所以选E。

gmat冲鸭鸭

RON说的which可以jump修饰prep前的名词的前提是这个介词也是在修饰名词，但距离which最近的of the highlands是在修饰the foot，而at the foot xxx 才是在修饰strategic position，我觉得隔了两个prep phrase还是不要jump的好~

曾屁股捷

gmat冲鸭鸭 发表于 2019-3-16 22:50
RON说的which可以jump修饰prep前的名词的前提是这个介词也是在修饰名词，但距离which最近的of the highland ...

懂啦！谢谢哦