标题: OG17--736题A选项解释 [打印本页] 作者: 哦耶耶耶 时间: 2017-6-10 16:47 标题: OG17--736题A选项解释 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,
OG解释A. The omission of that after the dash makes the function of the final clause unclear. The structure makes that clause appear to be an awkward and rhetorically puzzling seperate assertion that the writer has appended to the prior claim about what the anthropologists believe. The agent or clause of reducing is unclear.
对红字部分的的解释有疑惑，请大神们解惑；为什么说unclear,这不能理解为our ancestors suffered an event这句话造成的结果吗，然后使用comma+v-ing也可以啊
看一下 Manhattan上面的例子：
The engineer fixed the problem, earning himself a promotion.
Because the engineer fixed the problem, he earned a promotion.
主语是一致的都是 engineer