- UID
- 862714
- 在线时间
- 小时
- 注册时间
- 2013-3-4
- 最后登录
- 1970-1-1
- 主题
- 帖子
- 性别
- 保密
|
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 sometime 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给出的A项的解释:
A The omission of that after dash makes the function of the final clause unclear. The structure makes that clause appear to be an awkward and rhetorically puzzling separate assertion that the writer has appended to the prior claim about what the anthropologists believe. The agent or cause of reducing is unclear.
问题: 1、我看了看dash的用法,按句意应该是理解成解释说明,那就等于colon,而colon后可加完整的句子,也可加不完整的,如果替换成colon的话,那这句话就变成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. 所以,我想问:为什么必须留下that呢?OG的解释感觉不太能说服我。难道冒号后用个完整地句子说明就和前面没有联系了么?
2、想问一下这里的comma+ving,看了baby姐的关于ving的解释,刷OG也碰到好多题,但是这句有点不理解OG的解释,问题是:为什么cause of reducing就不clear了呢?难道不能理解成为结果状语么?即ancestor suffered an event,说是immediate consequence也能说通啊(比如突然遇到大火,然后马上就reduced numbers了)
3、也就是因为第二个问题所以又把我弄糊涂了,想问:comma+ving这种放在句尾,如果是伴随状语(或别的什么都好),如果有多个句子时,到底是修饰它前面的这个主句(可能在整个句子里充当从句,比如说:some anthropologists believe that the genetic homogeneity evident in the world's people is the result of a "population bottleneck"—that at some time in the past our ancestors suffered an event, greatly reducing their numbers and thus our genetic variation.),还是整个句子的主句呢?意思就是:比如说这个句子我在破折号后加上that,但是后面依旧用reducing,那此时reducing按语法要求上应该是修饰that从句里的 ancestors suffered and event还是 大主句里的some anthropologist believe 又或者是believe里面的从句genetic homogenetity is the result of呢?【虽然唯一合乎逻辑的是第一个,我是想问,但是有没有规定的语法要求就是要修饰临近的这个,还是说只能根据逻辑判断?】
另外贴上OG的解释:
The underlined part of this sentence is an explanatory rewording of the clause that follows believe. Scientists believe that X—[in other woeds,] that Y. In this construction, X and Y are parallel clauses.
是有这个习语么,必须后面是that Y?我觉得按句意理解完全可以不看成believe的宾语,而单纯理解为对population bottleneck的解释啊...(又回到第一个问题了)
求牛牛们解答!!!好困扰啊~~~~~头都要抓破啦!!!~~~~~~~~~~~~~先谢过了!!!!!!!!!!!!!!!!
|
|