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标题: 求教:og13 97-a选项中的comma+Ving作伴随状语表结果的错误原因 [打印本页]

作者: jasmine1793    时间: 2013-1-30 17:10
标题: 求教:og13 97-a选项中的comma+Ving作伴随状语表结果的错误原因
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,
答案选b

选项a中有句解释不太理解
The agent or cause of reducing is unclear.
除却-that的区分点,a选项中用comma+Ving满足了Ron所说:
the "comma + ing" modifiershould only be used when:
(A)
it MODIFIES THE ENTIRE ACTION of the preceding clause, and it APPLIES TO THE SUBJECT of that clause;
AND
(B)
one of the following is true:
(1) the "ing" action is SIMULTANEOUS with, and SUBORDINATEto, the main action;
- i ran down the sidewalk, flapping my arms wildly
(2) the "ing" action is a DIRECT AND IMMEDIATE CONSEQUENCE ofthe main action.
- i got a 100 on the most recent exam, bringing my average up to 91
since COMMA + -ING clauses are automatically attributed to the SUBJECTof the preceding clause, this modifies the moon.
as it clearly should, in context.

已经是表示前面suffer an event的结果,这句还是使用that+verb更优吗?

好混乱,求nn们指点~~感激不尽~~
作者: kiwifoodtown    时间: 2013-1-31 08:38
LZ,我想您有两个基本问题要搞明白:

1,在本题中,前一句哪个是主句,哪一个是从句?

2,在reducing。。。中,哪个是逻辑主语?

搞清楚这两个基本问题后,我想您应该明白为什么不选A了。
作者: jasmine1793    时间: 2013-1-31 18:29
嗯嗯,谢谢!后来想明白了
(A) at some time in the past our ancestors suffered an event, greatly reducing their numbers
ancestor是主语,如果用Ving,那么reducing的逻辑主语也必须是ancestor。这样就不合理~

记录一下,以后同样问题的们就能搜到了,谢谢!
作者: kiwifoodtown    时间: 2013-2-1 09:28
嗯嗯,谢谢!后来想明白了
(A) at some time in the past our ancestors suffered an event, greatly reducing their numbers
ancestor是主语,如果用Ving,那么reducing的逻辑主语也必须是ancestor。这样就不合理~

记录一下,以后同样问题的们就能搜到了,谢谢!
-- by 会员 jasmine1793 (2013/1/31 18:29:56)



。。。。。看来,您还是没明白。
A选项中,greatly reducing their numbers。。。。作状语,它的逻辑主语必须与主句主语相一致,也就是说 Some anthropologists 在形式上应该是主语,greatly reducing their numbers 应修饰Some anthropologists believe。。。。表示结果。但这样一来,它的逻辑意思就会狗屁不通了。这就是A选项错的原因。

PS:建议您在基本语法上多下些功夫。
作者: jasmine1793    时间: 2013-2-2 12:27
感激,确实是要再下功夫!谢谢
作者: 春雨Q    时间: 2013-9-29 20:58
求版主和牛牛指教本题。。。。
首先,comma+v-ing用法不是修饰主句,而是修饰前一个句子,也就是是从句也可以
其次,comma+v-ing有一种用法是修饰前面整个句子,作为伴随结果,无逻辑主语,那么这里这种用法为什么不对?
作者: cdbgin009    时间: 2013-12-18 13:48
春雨Q 发表于 2013-9-29 20:58
求版主和牛牛指教本题。。。。
首先,comma+v-ing用法不是修饰主句,而是修饰前一个句子,也就是是从句也可 ...

首先,逗号+v-ing如果做结果状语,他修饰的对象一定是整个句子,不可以是单独的一个从句

我来分析一下这道题目:that的用法很tricky,而且第一次做的时候我没有注意到,所以我太跳过that这个点

A:逗号+reducing:三种可能:结果状语/伴随状语/不必要的名词的修饰成分
结果状语:科学家认为....是....的结果,导致了人数的下降?不合逻辑
伴随状语:主句主语,这些科学家,更不合逻辑
不必要的名词的修饰成分:一个名词的修饰成分,必要与否要看被修饰的名词是否可以从很多可能性中被辨别出来,也就是说被修饰的名词是否是唯一的;如果是,那么后面的修饰成分可以是不必要的;如果不是唯一的,那么后面就一定要加上一个必要的修饰成分
本题,逗号+reducing前面是an event;可以对唯一性问个问题:哪个事件减少了祖先的数量?an event?很明显,an event不是唯一的,所以,an event后面要加上必要的修饰成分,也就是说an event与reducing之间那个逗号是必须去掉的
那么,三种可能都不存在,A这个逗号+reducing的修饰必然就是错误的

C:some time前少了at,导致语意不合逻辑;同时最后的so that...and...不平行
D:同C
E:同C;而且so as to这个固定搭配一般认为是错误的。

open to discuss.
作者: 700即可    时间: 2018-11-16 15:44
cdbgin009 发表于 2013-12-18 13:48
首先,逗号+v-ing如果做结果状语,他修饰的对象一定是整个句子,不可以是单独的一个从句

我来分析一下这 ...

看了100个人的,前辈说的最清楚,虽然您可能不看CD了,但是还是想感谢您一下!!
作者: Marvnt    时间: 2022-11-13 15:13
cdbgin009 发表于 2013-12-18 13:48
首先,逗号+v-ing如果做结果状语,他修饰的对象一定是整个句子,不可以是单独的一个从句

我来分析一下这 ...

感谢,清晰明了哇




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