请教一道语法题

yzxfx

The growth of the railroads led to the abolition of local times,[U][U]which was determined by when the sun reached the observer's meridian and differing[/U][/U] from city to city ,and to the establishment of reqional times.
  A which was determined by when the sun reached the observe's meridian and differing
  B which was determined by when the sun reached the observer's meridian and which differed
  C which were determined by when the sun reached teh observe's meridian and differing
  D determined by when the sun reached the observer's meridian and differed
  E determined by when the sun reached the observer's meridian an ddiffering

正确答案是E,为什么？逗号后面可以直接加ed形式吗?这句话中的几个ing 和ed形式分别都是修饰谁呢

万分谢谢

猫猫头

后面的分句其实是用来指代the growth，which指代不明
逗号后面当然可以用分词结构
ed表示这个动作是被动的，被决定的
ing表示主动
这个只需要看懂意思即可

yzxfx

但是这句话中which 所引的句子不是来说明local time 的吗？

princess

从形式上来讲，which 所引的句子不是来说明local time，而是说明abolition
因为名词短语the abolition of local times的中心词是abolition，而不是local time
从逻辑上来讲，which 所引的句子应该是来说明local time 的

yzxfx

THANK YOU VERY MUCH

mihu

The local times were determined by when the sun reached the observer's meridian and they differed from city to city.

Am I understanding right?

tongxun

mihu： you are right。