ChaseDream

标题: GWD26-37 [打印本页]

作者: trictincy    时间: 2006-6-4 18:56
标题: GWD26-37

Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy as a result of boundaries in the ocean created by water layers of different

temperatures and densities.

A.      prevented from dissipating its acoustic energy as a result of

B.  prevented from having its acoustic energy dissipated by

C.  its acoustic energy prevented from dissipating by

D.  its acoustic energy prevented from being dissipated as a result of

E   preventing its acoustic energy from dissipating by

答案给的是E,存疑。结尾有by说明前面必须有一个被动态的动词,但是在E中没有这样一个动词

另外,从意思上去理解,Sound自己怎么能prevent its acoustic energy from dissipating呢?

我认为应该选C,its acoustic energy prevented from dissipating by boundaries in the ocean created by water layers of different temperatures and densities作独立成分修饰前面的主句,同时意思上也与原句一致

Open to discussion


作者: kallyli    时间: 2006-6-5 00:45

c 逗号后面是个名词,都不是一句完整的话,错

E就是正确答案,preventing 做伴随状语,当sound travle时,可阻止能量分散,有什么不对啊?我觉得意思很明确啊。而且出现by并不需要被动语态才可以啊,by在这里可解释为“通过什么方法"


作者: trictincy    时间: 2006-6-5 11:11

谢谢楼上回复

首先,如果C后面是句完整的话那才错呢,逗号怎么可以连接两个完整的句子呢?独立成分置于句尾作状语修饰全句的在大全中也有

如,大全757

    The Forbidden City in Beijing, from which the emperors ruled by heavenly mandate, was a site which a commoner or foreigner could not enter without any permission, on pain of death.

(A) which a commoner or foreigner could not enter without any permission,

(B) which a commoner or foreigner could enter without any permission only

(C) which no commoner or foreigner could enter without permission,

(D) which, without permission, neither commoner or foreigner could only enter,C

               (E) which, to enter without permission, neither commoner or foreigner could do,

这里的on pain of death就是作状语修饰前面的句子

其次,请理解一下原句想表达的意思,原句是说:海中不同温度和密度的水层所产生的边界防止了声能的扩散。sound travle怎么防止声能扩散?照这样说来sound在空气中就不travle了吗?

最后,请不要混淆by的用法,by doing sth.确实是指以某种方法,但是这里的by后面是一个名词,明显是一个行为的发出者而不是行为或者方法,所以前面一定是要求有一个被动态的动词出现的


作者: kallyli    时间: 2006-6-5 19:28

你举的这个例子是正确的,on pain of death确实做状语,但原题你能说出一个名词放在后面做什么成分呢?我的意思是它不能做任何成分,而且连一个句子都不是,怎么可能正确?但是我并没有说如果它是一个句子就是对的,不要说我在这里强词夺理,当时我考虑到连词的问题,只是我觉得它不是句子所以没有连词的问题,也就不必提了。

另外,我认为句子的意思是声音在travle的过程中可以防止能量扩散,并没有说sound travle防止扩散,我的意思还是sound是主语是防止能量扩散者,这有什么不对么?

by后面可以跟一个名词表示方法或途径,He goes to work by train。He achives the goal by his intelligence. 哪里错了?

我想也许是你对这个句子分析太多,想得过于复杂,如果你认为我说的不对,可以看看其他人的高见。

感谢讨论


作者: trictincy    时间: 2006-6-5 22:24

楼上的MM好象有点生气,我只是就事论事而已,并没有针对阁下的意思

但是该弄清楚的还是要弄清楚,你说sound是主语是防止能量扩散者,我的问题是sound自己怎么去防止能量扩散?

你说by在这里表示方法,那么意思就是说sound通过boundary这种方法去防止自己的能量扩散,这样解释得通吗?

感谢回复


作者: kallyli    时间: 2006-6-5 22:34

我没有生气...

我看帖子总是把滚动条拉到E然后做题,所以我的解释完全是自己做题的过程,一没有就答案解释题,这样是不负责任的表现,二我想说的是这个题在语感上就是这样,没有任何问题,如果你读多了可能觉得奇怪,认为答案不对,但是这样解释没有错误...我也没办法证明我是对的,这需要一定语感...所以你大可找其他人问一问, 我无话可说了...


作者: trictincy    时间: 2006-6-5 22:52

如果语感是正确性的保证的话,那我也无话可说了。

可是这是第37题,真的这么简单吗?


作者: hwhhs    时间: 2006-7-4 16:08
.
作者: jacqui    时间: 2006-7-10 08:26

这句话的原文都可以找到,来自98年的纽约时报

Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities.


作者: mejor    时间: 2006-8-2 17:29

楼上的厉害,不过考试时间紧张,语感是个不错的选择的方式,GMAT语法中没有什么可以保证你改错全对。


作者: stellaleigh    时间: 2006-8-14 16:24

注意这句话的逻辑意思:sound can prevent it's energy from dissipating because there are boundaries in the ocean

not the boundaries causes the energy to dissipating
也就是说应该是boundaries prevent sound's acoustic energy from dissipating
能量应该自己就可以消散。所以dissipate 用主动。by是和prevented一起构成被动。

所以答案C


作者: jandjshi    时间: 2006-8-14 22:47

同意C. N + Participle 的独立主格, 很漂亮.


作者: allen0018    时间: 2006-8-14 22:54
同意c
大家能不能想起来OG 上有个什么宇宙什么的后面有个by, og 明确说如果用主动,那by 就没有意义了

作者: mymengming    时间: 2006-8-14 22:58

B呢??

prevented (from having its acoustic energy dissipated) by boundaries in the ocean created by water layers of different temperatures and densities.

是不是by修饰dissipated,引起歧义?


作者: jandjshi    时间: 2006-8-15 04:53

很同意3M兄.

ubiquitous3M兄 24 X 7 泡CD啊. 

 


作者: dori0214    时间: 2006-8-15 08:31
恩,和楼上的同解,比较喜欢独立主格,而且这里确实用被动比较好
作者: SBGMAC    时间: 2006-8-16 13:38
以下是引用jacqui在2006-7-10 8:26:00的发言:

这句话的原文都可以找到,来自98年的纽约时报

Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities.

那么应该选C了?

C.  its acoustic energy prevented from dissipating by

GMAT把原句改了一下,its acoustic energy提前作独立主格,这种做法挺常见的。


作者: beyond33    时间: 2006-8-23 21:03

一直不敢发言, 因为我选 A 了.

看了这位同学找来的原话后, 感觉我的 A 有了靠山.

可不可以给我一个排除 A 的充分理由呢? 纽约时报业可能错地

感谢


作者: mbz    时间: 2006-8-23 23:15

I did it wrong before.

After careful consideration, I will have to pick C now.


[此贴子已经被作者于2006-11-14 8:41:31编辑过]

作者: dori0214    时间: 2006-8-24 07:15
今天看这题又喜欢D了。。 毕竟sound 不能主动dissipate 或者prevent
作者: whole9    时间: 2006-8-31 05:59

选E,问了一native speaker,也是GMAT高分选手,说:从语法上讲C,E 都对。但这里主动大于被动,So,E.


作者: maggiecookies    时间: 2006-8-31 20:30
以下是引用whole9在2006-8-31 5:59:00的发言:

选E,问了一native speaker,也是GMAT高分选手,说:从语法上讲C,E 都对。但这里主动大于被动,So,E.

原来我选C, 看了你这句话: 主动优于被动, 我同意了, 支持E.


作者: mc637t    时间: 2006-9-19 23:07

A的部分似乎有"SOUND DISSIPATE ENERGY"的邏輯

但sound can't dissipate energy

B的部分有"迫使"的意味 REDUNDANT

同意E:主動優於被動

雖然我選C


作者: kelseybai    时间: 2006-9-23 07:32
我觉得E中it指代不清,前面有两个单数名词sound和water,我个人倾向A。
作者: pvdpvdpvd    时间: 2006-9-30 21:54

選C 用獨立主格說明是什麼 be prevented


作者: ecochem    时间: 2006-10-12 04:34

支持C,如果是E的话,preventing的动作是谁发出的呢?

看了原文出处,明显不是sound,故E不正确


作者: ll_422    时间: 2006-10-14 22:15
my key is also C too.
作者: 晴天小狗    时间: 2006-11-12 15:36

只有C


作者: lazyratcn    时间: 2006-12-3 23:41
顶一下,还是觉得C中的dissipating表主动阿,驱散还能够主动的吗?
作者: heshaohua666    时间: 2006-12-11 23:20
c 表原因,因为...,所以主句成立(声音可传很远)
作者: cccccc0    时间: 2007-1-5 17:50

感觉C不对阿~~逻辑说不通阿

boundaries 怎么能去prevent its acoustic energy from dissipating 呢?

这里的之所以可以prevent its acoustic energy from dissipating 是因为有boundaries 的存在的阿~

大家来讨论阿~~


作者: cccccc0    时间: 2007-1-14 20:25

今天在看这题,恍然大悟阿~~C

A的逻辑意思是 sound is prevented from dissipating its energy 言下之意就是sound发出了dissipate这个动作。但是正确的逻辑意思应该是the energy of sound is prevented from dissipating

而E的意思则是sound prevent its energy from dissipate但是原文的意思应该是boundary prevent...


作者: witylee    时间: 2007-1-15 03:21

(貼在打字本上的回覆,不知為何無法換行)

這題若用答案去解釋題意,感覺(語感)與文法(語法)都能夠說出道理來。
但我認為AT考的是邏輯性,這點可以用下二點說明:


1.sound在travel中能夠防止能量擴散,這解釋等於擴大了travel既在main sentence
作為一個verb並且還在下句發揮作用,英文原來有這種跨越影響的動詞?(在下句明顯
為一分詞代替連接詞的情況下)

2.sound作為一個普通名詞,在無任何動作或外力的情況下,可以產生自我防止的機制,
就好像酒擺在那裡,它(酒)就會造成車禍一樣。


by的部分不予討論><。

最後我不選C的原因是原句的its acoustic energy是處於O.地位,但是C卻拉成了S.,
句意改變的很大阿。(當然也許是有可能的。)


作者: witylee    时间: 2007-1-15 03:23

(貼在打字本上的回覆,不知為何無法換行)

這題若用答案去解釋題意,感覺(語感)與文法(語法)都能夠說出道理來。
但我認為AT考的是邏輯性,這點可以用下二點說明:


1.sound在travel中能夠防止能量擴散,這解釋等於擴大了travel既在main sentence
作為一個verb並且還在下句發揮作用,英文原來有這種跨越影響的動詞?(在下句明顯
為一分詞代替連接詞的情況下)

2.sound作為一個普通名詞,在無任何動作或外力的情況下,可以產生自我防止的機制,
就好像酒擺在那裡,它(酒)就會造成車禍一樣。


by的部分不予討論><。

最後我不選C的原因是原句的its acoustic energy是處於O.地位,但是C卻拉成了S.,
句意改變的很大阿。(當然也許是有可能的。)


作者: windrainjc    时间: 2007-1-15 04:26

今天刚做了这套题。正准备请教高人。怎么觉得都应该是C。cccccco,
            
boundaries可以prevent its acoustic energy from dissipating。 道理跟全反射相似,因为这些反射界面的存在,声音才可能向初始方向传播,从而传播很长的距离。所以说E显然不对,声音不可能prevent its energy from dissipating.主动的应用也导致了by boundaries没有意义。

另外,因为主动优于被动,dissipate在这里是个不及物动词,所以不需要D的being dissipated.


作者: wangxiaohan    时间: 2007-3-25 03:21

我完全同意LZtrictincy的意见! 我认为后边半句是独立主格结构,和前半句关系不大.而动作的发出者为BOUNDARIES IN THE OCEANS.


作者: kaochieh    时间: 2007-3-30 11:45

A. sound 不會主動dissipate its energy.

B. sound 不會主動使 its energy被dissipate.

C. 被動, 主語(題)不一致

D. being

E. by. 沿著boundary..能量比較不會dissipate


作者: 就醉一生    时间: 2007-4-17 11:46

vote for C

E的逻辑意思根本就错了。


作者: shinycrystal    时间: 2007-4-23 12:12

I still have some doubt:

Between C and E, I still prefer C...

Wait for your help!


作者: shinycrystal    时间: 2007-4-23 15:24

这句话的原文都可以找到,来自98年的纽约时报

Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities.

Then the answer should be C,rather than E?

Wait for your help!!!


作者: lb1900    时间: 2007-5-10 18:18

up


作者: raikey    时间: 2007-6-8 23:56

vote for C

做题时在B和C之间犹豫(其余选项意思不对),后觉得having ...done...比较罗嗦,选C.


作者: qianrene    时间: 2007-6-9 11:30
我选E
作者: chamcham    时间: 2007-6-18 17:14

C

Here is what I saw in another popular forum:

D isn't so bad. Sound's "acoustic energy [is] prevented from being dissipated..." But why use the wordy passive transitive "being dissipated" when the one-word active intransitive "dissipating" is perfectly acceptable? In any case, what really turned be off to D is "as a result of." It is far more direct and precise to say "prevented by" than "prevented as a result of."

I see nothing wrong with C. It's certainly not a run-on sentence: there's no conjugated verb after the comma. "Prevented" is the past participle. The second part of the sentence is saying that boundaries in the ocean prevent sound's acoustic energy from dissipating.

The idea could be conveyed in two sentences:

Sound can travel through water for enormous distances. Boundaries in the ocean... prevent its acoustic energy from dissipating.

Combine the sentences and you get:

Sound can travel through water for enormous distances, its acoustic energy prevented from dissipating by boundaries in the ocean....


[此贴子已经被作者于2007-6-18 17:14:31编辑过]

作者: sophiafinn    时间: 2007-6-20 00:14
up
作者: mygk    时间: 2007-7-25 16:47
后面是个名词,表明是句末同位语,是优选答案
作者: 点虫虫    时间: 2007-9-10 00:01
doing的问题是因为前面的搭配吧,prevent...from doing?
作者: carolinelmf    时间: 2007-10-28 19:13

E项是正确的。声波本身的特质就是在水中的衰减非常小,boundaries会令声波衰减,而不是让声波不衰减,C,D项错在把boundaries当好人了。

preventing作伴随状语,把它调到句首就十分容易理解了。

Preventing its acoustic energy from dissipating by boundaries in the ocean created by water layers of different temperatures and densities, sound can travel through water for enormous distances.

逻辑上可以理解为:因为能量不被水减弱,声波可能传千里。


作者: hollygrail    时间: 2007-11-30 00:51
句子的意思是 boundaries prevent sound from dissipating its acoustic energy (从修改前原文中分析的意思)
disspate可以做vt.,vi.
未改动的句子有这个 (sound) dissipating its energy,不是很好,因为并不是sound削弱了energy而是其他东西(阻力?)削弱.
出题者做了改动后有两项可以入选B和C
C: boundaries prevent energy from dissipating
B: boundaries prevent sound from having energy dissipated
have something stolen有 (somebody else) stoled something的意思,如果用在这里有(something else) dissipate energy,如果GMAT认可这种用法,就狠了.说明他把原来的句子甚至优化了.


作者: eileenmu木    时间: 2008-3-24 08:15
up
作者: yzhao26    时间: 2008-5-25 02:09

up


作者: lichabrend    时间: 2008-5-30 17:33
up
作者: shirley8707    时间: 2008-5-31 01:58
up
作者: mymengming    时间: 2008-6-29 09:40
答案应该是c或者没有,
Google上搜到的句子是Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities.
一般独立主格,与主句形成松散的逻辑关系,形式为:
N. +n.;n.+ -ed/-ing形式;n.+介词短语;n.+形容词短语。本题应该是 n.+-ed的独立主格结构
作者: rorarora    时间: 2008-6-29 11:18

Up, 真变态,没见过这么写独立主格的。

.........无语中.........


[此贴子已经被作者于2008-6-29 11:25:10编辑过]

作者: xiaoda    时间: 2008-7-3 15:22
up
作者: nbtom88    时间: 2008-9-16 16:42
up
作者: 水里游    时间: 2008-10-5 20:36
up
作者: singdeath    时间: 2008-10-22 20:44
以下是引用cccccc0在2007-1-14 20:25:00的发言:

今天在看这题,恍然大悟阿~~C

A的逻辑意思是 sound is prevented from dissipating its energy 言下之意就是sound发出了dissipate这个动作。但是正确的逻辑意思应该是the energy of sound is prevented from dissipating

而E的意思则是sound prevent its energy from dissipate但是原文的意思应该是boundary prevent...

Agree! Good explanation!
作者: fighteding    时间: 2008-11-23 01:04
以下是引用jacqui在2006-7-10 8:26:00的发言:

这句话的原文都可以找到,来自98年的纽约时报

Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities.

我怎么觉得纽约时报里面的prevent也是sound发出的啊


作者: jean1280    时间: 2009-6-30 22:35
UP
作者: Xclann    时间: 2009-7-11 08:39
e is the best.
作者: susieshen    时间: 2009-8-3 16:59

请问谁能回答我一下,

这个所谓的再NYT找到的原句怎么理解啊?

Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities.

,prevented。。。。。部分是做什么成分的?谁prevented?

谢谢了先!


作者: kevinli120    时间: 2009-8-31 10:57
以下是引用mc637t在2006/9/19 23:07:00的发言:

A的部分似乎有"SOUND DISSIPATE ENERGY"的邏輯

但sound can't dissipate energy

B的部分有"迫使"的意味 REDUNDANT

同意E:主動優於被動

雖然我選C

C中,preventing放在句尾起伴随作用,逻辑主语是soundsound prevent 他自己energy,逻辑意思错
作者: cllcchocolat    时间: 2009-9-21 11:16
考试的时候肯定直接选E了,有没有简单一点的看出这个独立主格的方法啊
作者: xiaofan1016    时间: 2009-10-11 11:40

这题考试时候绝对不能这么玩啊....


作者: shengxuf    时间: 2009-10-11 12:23

by means, 通过何种方法,应该不一定要表示被动对象的。


作者: fromludi    时间: 2009-10-27 23:03
以下是引用jacqui在2006/7/10 8:26:00的发言:

这句话的原文都可以找到,来自98年的纽约时报

Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities.


作者: Boot    时间: 2009-11-2 21:15
这道题用排除法更好一点。
上来辨别,应用by而非as a result of,一个表示方式,一个表示结果,意思是不一样的。排除AD。
接下来分析句意,应该是sound be prevented, 不是 sound prevent. 应该被动,排除E。
然后BC开比,B的from having done太累赘。选C

A.as a result of错误.
B.prevented错误.have ... dissipated累赘.
D.from being...累赘,as a result of错误.
E.preventing逻辑主语错误.


另外,原文已经找到。
http://www.nytimes.com/1998/10/27/science/global-thermometer-imperiled-by-dispute.html
"Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities."
作为对于正确选项C的理解,我认为不是独立主格,仅是一个倒装提前。因为如果独立主格的话,就是energy be prevented,意思又不对了。

作者: stucash    时间: 2010-1-29 04:44
楼上对独立主格的意见值得商榷。

请再看一下独立主格的结构,其中一个是n+-ed/-ing形式或者形容词短语;

而且energy be prevented by boundary 正是句子要表达的意思。

请参见OG12 VR 2ND EDITION NO.108,有GMAC官方解释。
作者: gaojinye    时间: 2010-5-30 23:31
A 原句在
Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities.

来源 http://www.junkscience.com/oct98/thermom.html
第8段
作者: stl2010    时间: 2010-6-17 05:34
A 原句在
Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities.

来源 http://www.junkscience.com/oct98/thermom.html
第8段
-- by 会员 gaojinye (2010/5/30 23:31:40)


这么说给出的答案C错了,应该是B?
作者: stl2010    时间: 2010-6-17 05:42
楼上对独立主格的意见值得商榷。

请再看一下独立主格的结构,其中一个是n+-ed/-ing形式或者形容词短语;

而且energy be prevented by boundary 正是句子要表达的意思。

请参见OG12 VR 2ND EDITION NO.108,有GMAC官方解释。
-- by 会员 stucash (2010/1/29 4:44:57)




这个太有挑逗性了,wish I had that book to refer to...
请问可以post一下GMAC的官方解释是什么吗?
谢谢!
作者: stl2010    时间: 2010-6-17 06:04
好吧,看了这题这么久,来post一下自己的想法:
开始的时候不明白为什么选C不选E,如果是C的话只有可能是Absolute Phrase(独立主格),但是不明白为什么E错。再看的时候认为如果是E的话,by后面应该接一个doing sth.。原文想要表达的意思是its acoustic energy is prevented from dissipating by boundaries……,如果按E的preventing的意思,是说sound travels through water for enormous distances这个事实prevent了bla bla bla,不符合原文的意思。
作者: keith139    时间: 2010-7-4 23:28
前辈们已经说的很清楚了,答案应该是c
补充一点D不对的地方,从国外网站上看到的权威解释:D It is imprecise and unidiomatic to say "prevented as a result of." The correct passive form is "prevented by."
作者: keith139    时间: 2010-7-4 23:31
A 原句在
Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities.

来源 http://www.junkscience.com/oct98/thermom.html
第8段
-- by 会员 gaojinye (2010/5/30 23:31:40)



请仔细看a和原句的差别
作者: 齐小悕    时间: 2010-7-23 21:51
68楼的排除法比较明确啊……
作者: fairyjinru    时间: 2010-10-17 13:22
http://www.beatthegmat.com/sound-can-travel-through-water-for-enormous-distances-t41971-15.html   上看到的,茅塞顿开啊。
Received a PM asking me to respond.

This is an OG question, so I can't discuss it directly, but I can discuss a similar sentence that I make up...  

The debate here is between these two "types" of sentences:

1) Light can travel through space for huge distances, its energy prevented from dissipating by X.

2) Light can travel through space for huge distances, preventing its energy from dissipating by X.


Let's start with #1.
The word "prevented" can be a regular conjugated verb or it can be a participle. If it's a participle, it can be part of a verb form (with another conjugated verb before it) or it can indicate a modifier. Examples of the two verb options:

"prevented" as regular conjugated verb: I prevented my paper from blowing away.

Conjugated verb + "prevented" participle: My paper was prevented from blowing away. (The paper was prevented by me.)

Now, what is the difference in those two sentence constructions? The first is active; the second is passive. In the first, the subject (I) is doing the action (prevented). In the second, the subject (paper) is having the action performed on it (I'm still doing the preventing, not the paper).

Could I write: "The paper prevented from blowing away" - meaning, the paper prevented itself from blowing away? Nope. The paper can't prevent itself from blowing away.  If we want to use "the paper" as the subject, we have to write this in passive voice.

So. Energy prevented from dissipating by X. Is that a sentence? Can the energy prevent itself from dissipating? No, again. If we want to use "energy" as a subject and have an independent clause here, we have to write this in passive voice, which would be "the energy WAS prevented from dissipating by X."

What does that mean? That word "prevented" is not a conjugated verb or part of a conjugated verb form in this sentence. Therefore, it's a modifier and the stuff after the comma in C is NOT an independent clause - it's the rest of the modifier.

Now, #2.
2) Light can travel through space for huge distances, preventing its energy from dissipating by X.

We have <independent clause>, <-ing modifier>. The -ing modifier needs to modify the preceding clause. Also, the modifier needs to follow from the independent clause; that is, something in the independent clause needs to be doing this "preventing." What is doing this preventing?

Argh. It's the stuff after the word "by." That's not part of the independent clause. Nothing in the independent clause is responsible for "preventing the energy from dissipating." This is a misplaced modifier.

If it's too confusing to understand based on the example above, try this:

Paper can fly through the air for huge distances, preventing it from falling by gusts of wind.

What's preventing the paper from falling? The gusts of wind. But the "preventing" has to refer to the stuff *before* the comma. Nothing *before* the comma is actually preventing the paper from falling.
_________________
作者: akiluk    时间: 2010-11-10 11:23
这道题用排除法更好一点。
上来辨别,应用by而非as a result of,一个表示方式,一个表示结果,意思是不一样的。排除AD。
接下来分析句意,应该是sound be prevented, 不是 sound prevent. 应该被动,排除E。
然后BC开比,B的from having done太累赘。选C

A.as a result of错误.
B.prevented错误.have ... dissipated累赘.
D.from being...累赘,as a result of错误.
E.preventing逻辑主语错误.


另外,原文已经找到。
http://www.nytimes.com/1998/10/27/science/global-thermometer-imperiled-by-dispute.html
"Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities."
作为对于正确选项C的理解,我认为不是独立主格,仅是一个倒装提前。因为如果独立主格的话,就是energy be prevented,意思又不对了。
-- by 会员 Boot (2009/11/2 21:15:20)




解释的很好 我一直不明白为什么C 不用连词 看到http://www.beatthegmat.com/sound-can-travel-through-water-for-enormous-distances-t41971-30.html 上面解释好像是说独立主格啊 不懂啊不懂!
作者: Dongkailun    时间: 2011-8-20 11:46
注意这句话的逻辑意思:sound can prevent it's energy from dissipating because there are boundaries in the ocean
not the boundaries causes the energy to dissipating
也就是说应该是boundaries prevent sound's acoustic energy from dissipating
能量应该自己就可以消散。所以dissipate 用主动。by是和prevented一起构成被动。
所以答案C
为什么,你自己都说了是sound can prevent it's energy......那么本题就更应该用preventing, 才能保证逻辑主语是sound啊 不懂 求解释


-- by 会员 stellaleigh (2006/8/14 16:24:00)


作者: lpo    时间: 2011-8-22 21:29
OG verbal SC 108
够搞脑子的一道题啊~
作者: sanlingjie    时间: 2011-9-26 16:38
Do not trust NYTIMES. Sometimes it uses the wrong grammer, and GMAT is trying to help it correct its errors. Hah
作者: deityc    时间: 2011-10-6 10:35
有见证了 一段历史
作者: anycxy    时间: 2012-1-24 00:20
总算看出点头绪了,E错误的原因在于“by。。。。”和动词的对应。by后面接的n(即boundaries)应该是动词prevent的发出者,而E的prevent的ing形式会让人理解为是sound发出prevent的动作,让人confuse。所以E是错的。

另外,nytime那个也是对的,因为prevent用的是被动式,改写一下:
Sound is prevented from dissipating its acoustic energy by boundaries.........


boundaries是动作prevent的发出者,sound是prevent的接受者,动作的结果是sound‘s acoustic energy 不dissipate。
作者: 叶碧云    时间: 2012-11-29 09:08
竟然是og的题目,太狠了
另 ron说这是absolute phrase,独立短语
作者: AnnTeng    时间: 2013-8-20 21:49
我还在迷惑中,可以把Ron的解释的链接给我吗?多谢
作者: niclively    时间: 2014-2-10 22:14
AnnTeng 发表于 2013-8-20 21:49
我还在迷惑中,可以把Ron的解释的链接给我吗?多谢

希望有帮助:
http://www.manhattangmat.com/forums/sc-sound-t7263.html
作者: woailinyee    时间: 2014-2-15 12:37
曼哈顿上的答案是A
作者: neomy    时间: 2015-1-14 12:10
························
作者: lucywenjie    时间: 2015-3-8 12:05
stellaleigh 发表于 2006-8-14 16:24
注意这句话的逻辑意思:sound can prevent it's energy from dissipating because there are boundaries in ...

你这样一说顿时明白了。
作者: september918    时间: 2015-9-3 15:57
突然觉得很感动,帖子从2006年到现在,从当初的E答案到现在的OG2015给出的C答案,变的是时间,不变的是追求真理的心。
作者: 呵呵又呵呵    时间: 2015-11-5 16:06
september918 发表于 2015-9-3 15:57
突然觉得很感动,帖子从2006年到现在,从当初的E答案到现在的OG2015给出的C答案,变的是时间,不变的是追求 ...

同意!               
作者: YOYOwhatsup    时间: 2016-1-27 16:54
kallyli 发表于 2006-6-5 19:28
你举的这个例子是正确的,on pain of death确实做状语,但原题你能说出一个名词放在后面做什么成分呢?我的 ...

一个名词放在后面肯定能行,至少独立主格结构说能行,而且这明明白白就是一个独立主格结构的问题。
作者: MRivyhan    时间: 2016-4-25 13:16
OG2016橙色皮里面语法第98题一样的题,OG答案是C.........我选了E。。。。。错了。。。

作者: MRivyhan    时间: 2016-4-25 13:22
OG解释E的错误在于 this version of the sentence nonsensically explains that sound prevents the dissipation of its own energy
C的解析:Here, "acoustic energy" is effectively modified by the participal "prevented from dissipating"
随意感受下吧 考点其实就是logical prediction和修饰

作者: 油闹家    时间: 2016-6-8 14:07
见证了一道题几年的不停解释:
现在结合OG16的解释再阐述一下我的理解,就是为什么那几个选项要被排除~不对的地方还望指正。
A选项OG里面说'dissipate‘这个单词是不及物动词,所以后面不能直接跟“its acoustic”(我觉得这个肯定还是有其他原因可以排除这个选项的,欢迎补充。)
B选项很明显语意完全错误,因为B想表达的是:1.生意可以越过水面。2.boundaries使得声音能量消散了。(在本题里,boundaries是保护声音能量不被消散的。)
D.像from……being这种很容易引起句子歧意的。因为这句话可以带来两个理解:
     1.its acoustic energy( prevented from being dissipated)( as a result of boundaries) in the ocean created by water layers of different temperatures and densities.这句话意思是:boundaries保护声音能量不消散。
     2.        its acoustic energy (prevented from)( being dissipated as a result of boundaries )in the ocean created by water layers of different temperatures and densities.这句话意思是:声音能量防止由于boundaries而被消散。
    这两种理解中,boundaries的角色完全相反,由保护变成破坏。
E选项也很明显是一个句子意思的完全颠覆,用ing表示“声音阻止自己的能量被消散”。
啊……这道题看了一上午,看了很多解释,也不知道自己这样理解对不对,希望大家不断来完善哦


作者: AnnieFFish    时间: 2016-7-15 18:02
这题我也是看了好久好久好久啊。。。。。。
这贴从06年开到16年
十年了

作者: luke要去top30    时间: 2016-8-22 03:14
作为一个深夜在刷GWD 看这题解释的菜鸟,,很感动。。
作者: K先生的小情人    时间: 2016-9-21 17:31
刚开始选了E 现在觉得E不对 vote 4 C 但具体为什么好像心里明白了又说不出来
作者: K先生的小情人    时间: 2016-9-21 17:32
BTW 06年刚上高中,如今已工作两年有余。。啊 时光飞逝。扯远了,祝大家都750+




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