标题: GWD语法一题！ [打印本页] 作者: Xiaotongdi 时间: 2011-5-10 19:04 标题: GWD语法一题！ In the 1820’s, anthracite coalfields opened in eastern Pennsylvania, and when canals and eventually railroads reached into the region, there were substantial supplies of coal that was exported to the nation’s growing mills, forges, factories, and railways.
when canals and eventually railroads reached into the region, there were substantial supplies of coal that was
once canals and eventually railroads reaching into the region, there were substantial supplies of coal having been
with canals and eventually railroads reaching into the region, there had been substantial supplies of coal
canals and eventually railroads reached into the region, with substantial supplies of coal being
as canals and eventually railroads reached into the region, substantial supplies of coal were 这题答案是E，但是那个and as canals and……怎么觉得怪怪的！
作者: kathyhappy 时间: 2011-5-10 19:32
as引导了一个原因状语从句，所以后面这句是as XXX reached into the region, .... 而XXX部分是一个并列成分，canals and railroads。 哪里怪啊？作者: Xiaotongdi 时间: 2011-5-10 19:43
好吧，解释完就不怪了！谢谢……作者: lllmmm 时间: 2011-5-10 19:44
这里 as和 when一样