关于OG SC 97题V-ING不做结果状语 的困惑

lindsayduff

97. Some anthropologists believe that the genetic homogeneity evident in the world's people is the result of a “population bottleneck”—at some time in the past our ancestors suffered an event, greatly reducing their numbers and thus our genetic variation.

(A) at some time in the past our ancestors suffered an event, greatly reducing their numbers

(B) that at some time in the past our ancestors suffered an event that greatly reduced their numbers

(C) that some time in the past our ancestors suffered an event so that their numbers were greatly reduced,

(D) some time in the past our ancestors suffered an event from which their numbers were greatly reduced

(E) some time in the past, that our ancestors suffered an event so as to reduce their numbers greatly,

A 的硬伤是 没有平行 且 破折号后面不是完整句子

困惑：

可是为甚A的 reducing 不能做结果状语从句？？？如果做结果状语的话不用逻辑主语不是也可以么？？

daisyjin

reduce是描述一个特定的an event的。
结果状语的主语也要是前面的句子的主语吧？？

lindsayduff

daisyjin 发表于 2014-3-20 11:52
reduce是描述一个特定的an event的。
结果状语的主语也要是前面的句子的主语吧？？ ...

你确定？结果状语的主语也要是主句主语？？我知道伴随动作状语，是一定加肯定的