哪位大牛麻烦给解答一下这个语法

zqsyeira · 发表于 2010-11-5 21:14:23

Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.

A.   Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.
B.   Nearly 99 percent of five hundred million different species of living creatures that appeared on Earth have vanished.
C.   Vanished are nearly 99percent of the five hundred million different species of living creatures that appeared on Earth.
D.   Of five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent of them have vanished.
E.   Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent have vanished.

答案好像是在B,E中争论。
我的问题是A是独立主格吗？相请问一下独立主格里的动作是和主句的动作时间一致吗，比如A如果看作是独立主格的话那么说明vanish和appear on earth是同时发生的？所以不正确？
请觉得透彻理解独立主格的朋友指点一下，快考试了心里很着急啊，谢谢大家了。

堇年baby · 发表于 2010-11-5 21:21:33

不是NN我也来说说我的看法吧
A是独立主格，但是A的错误在于them指代不清，而且不应该是ing形式，应该是现在完成，表示到目前为止消失了多少比较符合题意吧。
独立主格里的时间和主句不一定一致吧，这个还得看具体的题意。

哪位大牛麻烦给解答一下这个语法

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