问一道SC!!!纠结!请大牛现身!关于同位语和独立主格

Summer明明

At the turn of the twentieth century, forest covering as much as 90 percent of Thailand and accommodating as many as 300,000 elephants, a third of them domesticated and performing various essential tasks.

A.covering as much as 90 percent of Thailand
and accommodating as many as 300,000 elephants, a third of them
B.covering as much as 90 percent of Thailand
accommodated as much as 300,000 elephants, and a third of them were
C.covered as much as 90 percent of Thailand
and accommodated as much as 300,000 elephants, with a third
D.covered as much as 90 percent of Thailand
and accommodated as many as 300,000 elephants, a third of them
E.covered as much as 90 percent of Thailand
and accommodating as many as 300,000 elephants, with a third of them
答案D 我想问ELEPHANTS后面的结构到底是同位语还是独立主格 我觉得是后者呢,可搜以前的帖子说是同位语 不解*-*
请教如何区分!!!

Summer明明

http://forum.chasedream.com/GMAT_Math/thread-484813-1-1.html?postid=14341049&searchmode=TopicContent&searchtext=forest%20covering%20as%20much
再想想好象又是同位语...结论 记住这个例子!不纠结了....

MarsTOF

正好昨天看到了同位语和独立主格  
prep语法笔记上我记得说 句尾的名词要是 同位语的话 一般指主句主语
                                                  要是 独立主格的话  可以不考虑主句主语
这题主句主语是forest  句尾要是同位语的话 逻辑有问题  所以我觉得应该是独立主格  

请NN指正。。

顺便  LZ能把说是同位语的讨论帖给个链接么~~THX

At the turn of the twentieth century, forest covering as much as 90 percent of Thailand and accommodating as many as 300,000 elephants, a third of them domesticated and performing various essential tasks.

A.covering as much as 90 percent of Thailand
and accommodating as many as 300,000 elephants, a third of them
B.covering as much as 90 percent of Thailand
accommodated as much as 300,000 elephants, and a third of them were
C.covered as much as 90 percent of Thailand
and accommodated as much as 300,000 elephants, with a third
D.covered as much as 90 percent of Thailand
and accommodated as many as 300,000 elephants, a third of them
E.covered as much as 90 percent of Thailand
and accommodating as many as 300,000 elephants, with a third of them
答案D 我想问ELEPHANTS后面的结构到底是同位语还是独立主格 我觉得是后者呢,可搜以前的帖子说是同位语 不解*-*
请教如何区分!!!

-- by 会员 Summer明明 (2011/5/6 10:57:08)