The steel industry has changed radically over the last two decades, as large, integrated companies such as Bethlehem Steel once conducted operations from mining at one end of the process to shipping at the other have greatly downsized, or in some cases shut down altogether.
A.as large, integrated companies such as Bethlehem Steel
B.as large, integrated companies, such as Bethlehem Steel, that
C.with large, integrated companies, such as Bethlehem Steel, that
D.while large, integrated companies, such as Bethlehem Steel, that
E.and large, integrated companies such as Bethlehem Steel (B) 看了网上的解释，有人说as是作为的意思（我觉得最合理，而说as as结构的站不住脚吧？）。 想求证一下我理解的对不对 作为大型的一体的公司（们）such as是举例 that是companies的定语从句。
请N人指导下，谢谢
作者: mudiduange 时间: 2010-12-15 13:02
as 在这里是连词，连接前后两个句子，后一个句子是对前一个句子起补充说明作用
that修饰的是companies, 句子主干应该是： the steel industry changed radically, as companies that.....have, or...作者: uupigyu318 时间: 2010-12-16 07:28
as 在这里是连词，连接前后两个句子，后一个句子是对前一个句子起补充说明作用
that修饰的是companies, 句子主干应该是： the steel industry changed radically, as companies that.....have, or...