Ron曾经阐述了使用comma+ing的条件，
即
1) it should apply most nearly to the subject of the preceding clause (as you've said);and, even more importantly,
2) it should have one of the following RELATIONSHIPS to that clause:
* immediate consequence
* simultaneous, but lower-priority, action
OG13-35
By 1940, the pilot Jacqueline Cochran held seventeen
official national and international speed records, and
she earned them at a time when aviation was still so
new for many of the planes she flew to be of
dangerously experimental design,
(A) and she earned them at a time when aviation
was still so new for many of the planes she flew
to be
(B) earning them at a time that aviation was still so
new for many of the planes she flew to be
(C) earning these at a time where aviation was still
so new that many of the planes she flew were
(D) earned at a time in which aviation was still so
new such that many of the planes she flew were
(E) earned at a time when aviation was still so new
that many of the planes she flew were
答案是E。
OG对B项的解释是：Here, the word earning takes the pilot herself, not the records, as its subject. However, earning is close to the records, not to Jacqueline Cochran, making this sentence hard to process. In addition, the causal relationship between aviation being new and planes being of experimental design is more effectively communicated by the structure so new that many X were Y, not by the structure so new for many Y to be X.
按照Ron的条件，earning them at a time完全满足。earning可以视为和held同时发生，且apply to the subject。也就是对的，为什么OG却说是不对的，有可能修饰records.还有一种说法是earn离主语太远造成修饰歧义，在我看来这跟OG13-29题相比较已经算近的了。
OG13-29
Emily Dickinson’s letters to Susan Huntington Dickinson were written over a period beginning a few years before Susan’s marriage to Emily’s brother and ending shortly before Emily’s death in 1886, outnumbering her letters to anyone else.
为什么还会产生修饰歧义？
我有两个问题不明白：
V-ing是离主语太远还是离主句谓语太远会产生歧义？
这个距离怎么判断？
各位牛牛，ing问题纠结半天了，越看越糊涂，帮帮我吧
-- by 会员 玄冥太子 (2012/7/26 17:56:29)
Ron曾经阐述了使用comma+ing的条件，
即
1) it should apply most nearly to the subject of the preceding clause (as you've said);and, even more importantly,
2) it should have one of the following RELATIONSHIPS to that clause:
* immediate consequence
* simultaneous, but lower-priority, action
OG13-35
By 1940, the pilot Jacqueline Cochran held seventeen
official national and international speed records, and
she earned them at a time when aviation was still so
new for many of the planes she flew to be of
dangerously experimental design,
(A) and she earned them at a time when aviation
was still so new for many of the planes she flew
to be
(B) earning them at a time that aviation was still so
new for many of the planes she flew to be
(C) earning these at a time where aviation was still
so new that many of the planes she flew were
(D) earned at a time in which aviation was still so
new such that many of the planes she flew were
(E) earned at a time when aviation was still so new
that many of the planes she flew were
答案是E。
OG对B项的解释是：Here, the word earning takes the pilot herself, not the records, as its subject. However, earning is close to the records, not to Jacqueline Cochran, making this sentence hard to process. In addition, the causal relationship between aviation being new and planes being of experimental design is more effectively communicated by the structure so new that many X were Y, not by the structure so new for many Y to be X.
按照Ron的条件，earning them at a time完全满足。earning可以视为和held同时发生，且apply to the subject。也就是对的，为什么OG却说是不对的，有可能修饰records.还有一种说法是earn离主语太远造成修饰歧义，在我看来这跟OG13-29题相比较已经算近的了。
OG13-29
Emily Dickinson’s letters to Susan Huntington Dickinson were written over a period beginning a few years before Susan’s marriage to Emily’s brother and ending shortly before Emily’s death in 1886, outnumbering her letters to anyone else.
为什么还会产生修饰歧义？
我有两个问题不明白：
V-ing是离主语太远还是离主句谓语太远会产生歧义？
这个距离怎么判断？
各位牛牛，ing问题纠结半天了，越看越糊涂，帮帮我吧
-- by 会员 玄冥太子 (2012/7/26 17:56:29)
"按照Ron的条件，earning them at a time完全满足。earning可以视为和held同时发生，且apply to the subject。也就是对的，为什么OG却说是不对的，有可能修饰records."
同学啊，注意语义。comma + v-ing 到底表示什么逻辑意思？
"He read OG for eight times, hoping for a stellar GMAT score. "
This sentence makes sense.
"He read OG for eight times, doing all the prep questions."
This sentence does NOT make sense.
这题就属于后一种情况，如果你用v-ing，that does not make sense.
从语义上讲，后面那一串，讲的是international speed records怎么earned的，所以用 comma + v-ed 作为noun modifier修饰international speed records.
-- by 会员 babybearmm (2012/7/27 19:48:24)
哇，baby姐被我喊来了，
这个问题，我看了CD上所有帖子上的讨论，还是有点不明白。其实有的同学已经稍微提出了一些跟我相同的看法。我的观点是，我记得V+ing是表示主动，是前面句子的主语发出的动作，如果是V+ed的话，表示被动。所以我觉得用earning合理些，用earning就表示主语Jacqueline Cochran发出的那个earn的动作，是他earn了这些记录，这解释很合理啊。反倒是用V+ed的话， 说起来别扭，怎么这些记录能被earn呢。而且如果用earn修饰紧跟在它前面的records的话，为什么还要多次一举加一个逗号呢？GMAT不是讲求简洁吗，而且过去分词作定语修饰它前面的名词也很正常啊。
还有一个问题是B项的them，我觉得指代没有歧义啊。前面也就一个复数名词啊，也就是那些记录，为什么不行。
所以，这题我觉得把B项的so new for 改为so new that的话应该是最佳答案。
-- by 会员 zhuangzhilingy (2013/3/7 23:15:53)
但是这里可不可以表伴随，作为对前面主句的一个补充呢？doing all the prep questions 作为read OG的一种方式,我是这么理解的。对于comma+ING都头大了，到底是修饰句末object还是修饰前面的整个句子？这个具体该怎么区分呢？望Baby姐解答
