756. To map Earth's interior, geologists use a network of seismometers to chart seismic waves that originate in the earth's crust and ricochet around its interior, most rapidly traveling through cold. dense regions and slower through hotter rocks. A. interior, most rapidly traveling through cold. dense regions and slower B. interior, which travel most rapidly through cold, dense regions, and more slowly C. interior, traveling most rapidly through cold, dense regions and more slowly D. interior and most rapidly travel through cold, dense regions, and slower E. interior and that travel most rapidly through cold, dense regions and slower Answer: C ------------------------------------------------------------------------------ 我们来看这题的句意表示，......seismic waves 到这里句子已经完整结束 而後续表达的动作 originate (V1) and ricochet (V2), traveling (V3) 皆为 seismic waves 表达的动作 而 seismic waves 既然在後面加入了 that， 则新子句的主词自然而然就成了 seismic waves 所以我们可以重新来这样看子句: seismic waves originate (V1) and ricochet (V2), traveling (V3).... 则这个 traveling 自然而然就是修饰 seismic waves，没有问题 答案 (B) 的 which，在 GMAT 规则中就是修饰最近的名词或整组名词 (a of b) 所以无论如何都修饰不到 seismic waves 而同样的用法也出现在 OG 2017 #767 当中 ------------------------------------------------------------------------------- 767. The results of the company's cost-cutting measures are evident in its profits, which increased five percent during the first three months of this year after it fell over the last two years. A. which increased five percent during the first three months of this year after it fell B. which had increased five percent during the first three months of this year after it had fallen C. which have increased five percent during the first three months of this year after falling D. with a five percent increase during the first three months of this year after falling E. with a five percent increase during the first three months of this year after having fallen Answer: C ------------------------------------------------------------------------------ 正确答案 C 的 after falling，falling 并不是修饰原句主词 The results 而是修饰 profits profits + which + increased..... 则後面产生的新子句为 profits increased.....after falling 主词已经变成了 profits，所以 after falling 可以正确的修饰到 profits 没有问题 (D), (E) 同样使用 after falling，则因为前面子句唯一的主词只有 the result， 无法修饰到 profits ※ 引述《Tsou2 (Ashton.Tsou)》之铭言： : 最近在总结考点，突然想不透句尾Ving考点，所以上来请示各位大神们。 : 句尾Ving表达因果关系、表示伴随发生的事情。 : 今天做到一题正要选Ving时却卡住，因为我去检查了逻辑主语， : 发现主要子句的主词不能做出Ving这个动作而是受词要做，所以选到了错误答案。 : 贴一下今天做的题目： : To map Earth’s interior, geologists use a network of seismometers to chart : seismic waves that originate in the earth’s crust and ricochet around its : interior, most rapidly traveling through cold, dense regions and slower : through hotter rocks. : A) interior, most rapidly traveling through cold, dense regions and slower : B) interior, which travel most rapidly through cold, dense regions, and more slowly : C) interior, traveling most rapidly through cold, dense regions and more slowly : D) interior and most rapidly travel through cold, dense regions, and slower : E) interior and that travel most rapidly through cold, dense regions and slower : 分享我的做题思路，各路神人烦请不吝指教： : 1) most rapidly和more slowerly平行，删ADE : 2) 原本要写C，可是回头去看traveling逻辑主语抓到geologists，心理一阵困惑。 : 做traveling这个动作的不是seismic waves吗!!! 於是写了B : 3) B跳跃修饰指代seismic waves : (後来查论坛that/which同时指代seismic waves是错误的) : 谢谢大家，祝各位杀G顺利。 -- Donz GMAT 6-7 月实力班: http://www.donzgmat.com/course-5weeks Donz GMAT FB: https://www.facebook.com/groups/DonzGMAT Donz 全科线上机经课: http://ndxica.pixnet.net/blog/post/41525434 --

※ 发信站: 批踢踢实业坊(ptt.cc), 来自: 180.204.50.72 ※ 文章网址: https://webptt.com/cn.aspx?n=bbs/GMAT/M.1497540850.A.AF4.html ※ 编辑: ndxica (180.204.50.72), 06/15/2017 23:37:49 个人觉得 comma + Ving 也并不是 100% 指代原题主词 但肯定和前面的事件 or 动作有相关性 1. 前面子句形容的事件: Manhattan 有一个例句我觉得可以当参考: Crime has recently decreased in our neighborhood, leading to a rise in property values. 犯罪率下降，造成房地产上升。 --> 房地产上升的来源并不是犯罪，而是"犯罪率下降"整件事情 再拿一题经典题来测试: In the mid-1970's, (since birds were overcome by pollution, and routinely falling from the sky above Los Angeles freeways, this prompted officials in California to devise a plan that reduced) automobile emissions. D. birds overcome by pollution routinely fell from the sky above Los Angeles freeways, prompting officials in California to devise a plan to reduce E. birds overcome by pollution and routinely falling from the sky above Los Angeles freeways were prompting officials in California to devise a plan to reduce 基本句意为: 被污染的鸟从LA高空坠弱，而促使官方立法降低汽车排放废气 促使官方立法，应该是前面整个事件 --> 被污染的鸟从LA高空坠弱 而并非为鸟本生的意志 (答案 (E)) (鸟总不可能以死明志吧?) 所以答案必须选 (D)，使用 comma + Ving 的答案 2. 最接近动作的主词 例子就是此题原题本身: 由於此题为 OG 题目，Manhattan 并没有单独此题的论坛， 但在这里可找到 Ron 对此题的解释 https://goo.gl/WO1TfP 'comma _ing' modifies the closest action. here, that action is '...ricochet around [the earth's] interior.' the subject of THAT action is 'seismic waves', and so 'comma + _ing' works perfectly in the usual way. 最接近的动作为 originate and ricochet，主词则为 seismic waves ※ 编辑: ndxica (180.204.50.72), 06/16/2017 03:01:58