Comparison什么时候可以省略（OG16 111）

wwndylow · 发表于 2015-8-28 15:53:42

[size=15.000000pt]OG16版111题
[size=15.000000pt]According to recent studies comparing the nutritional value of meat from wildanimals and meat from domesticated animals, wild animals have less total fat thando livestock fed on grain and more of a kind of fat they think is good for cardiachealth.

[size=15.000000pt](A) wild animals have less total fat than do livestock fed on grain and moreof a kind of fat they think is
[size=15.000000pt](B) wild animals have less total fat than livestock fed on grain and more of akind of fat thought to be
[size=15.000000pt](C) wild animals have less total fat than that of livestock fed on grain andhave more fat of a kind thought to be

[size=15.000000pt](D) total fat of wild animals is less than livestock fed on grain and they havemore fat of a kind thought to be
[size=15.000000pt](E) total fat is less in wild animals than that of livestock fed on grain andmore of their fat is of a kind they think is
[size=15.000000pt]答案选B
[size=15.000000pt]OG的解释：

[size=15.000000pt]The sentence reports research findings on the comparison between the fat contentof wild animals and that of domestic livestock. The most significant error in thesentence is in the phrase [size=15.000000pt]they think[size=15.000000pt]: the pronoun [size=15.000000pt]they [size=15.000000pt]either lacks a referent or ismeant to refer back to [size=15.000000pt]wild animals[size=15.000000pt], which would be nonsensical.
[size=15.000000pt]A The pronoun [size=15.000000pt]they [size=15.000000pt]fails to refer correctly.
[size=15.000000pt]B Correct. [size=15.000000pt]The phrase [size=15.000000pt]thought to be [size=15.000000pt]eliminates the most significant errorin the original sentence. Note that while the phrase [size=15.000000pt]less total fat thanlivestock [size=15.000000pt]differs from the phrase [size=15.000000pt]less total fat than do livestock [size=15.000000pt]in theoriginal, either would be correct here.
[size=15.000000pt]C The resulting sentence is unnecessarily wordy and confusing. Thepronoun [size=15.000000pt]that [size=15.000000pt]is not only superfluous, but it fails to refer back to anything.
[size=15.000000pt]D The resulting sentence makes a nonsensical comparison between [size=15.000000pt]total fat[size=15.000000pt]and [size=15.000000pt]livestock[size=15.000000pt].
[size=15.000000pt]E The resulting sentence is wordy and confusing. It lacks the requiredparallelism [size=15.000000pt]in wild animals . . . in livestock[size=15.000000pt]. The referent of the possessivepronoun [size=15.000000pt]their [size=15.000000pt]is ambiguous, as is the referent of the pronoun [size=15.000000pt]they[size=15.000000pt].
解释中没有提到平行的问题但我不是很明白A... than do livestock... B. than livestock C. that of livestock 都正确吗？什么时候do 和that of 可以省略？

wwndylow · 发表于 2015-8-28 15:55:08

求大神指点！快要被parallelism comparison什么的搞疯了

wwndylow · 发表于 2015-8-28 16:24:43

自己顶

LincolnLiu · 发表于 2015-8-28 22:00:01

(A) 选项：wild animals have less total fat than do livestock fed on grain and more of a kind of fat they think is中do应该换成have才对。 B选项正确，相当于wild animals和livestock fed on grain对比

Tigerlilybuds · 发表于 2015-9-1 15:55:32

同困扰。上过很多论坛寻找帮助。
以下是MGMAT上关于此题的一些instructions，RON神的回复可好好品味~
https://www.manhattanprep.com/gmat/forums/according-to-recent-studies-comparing-the-nutritional-value-t718.html
http://www.manhattanprep.com/gmat/forums/post73637.html#p73637
希望能帮到你~：)

wwndylow · 发表于 2015-9-4 21:39:43

Tigerlilybuds 发表于 2015-9-1 15:55
同困扰。上过很多论坛寻找帮助。
以下是MGMAT上关于此题的一些instructions，RON神的回复可好好品味~
https ...

谢谢谢谢~~
我把Manhattan上的几个回帖贴出来了~

According to recent studies comparing the nutritional value

by Samy Tue Jul 17, 2007 12:06 pm

Q24: According to recent studies comparing the nutritional value of meat from wild animals
and meat from domesticated animals, wild animals have less total fat than do livestock
fed on grain and more of a kind of fat they think is good for cardiac health.

A. wild animals have less total fat than do livestock fed on grain and more of a kind
of fat they think is
B. wild animals have less total fat than livestock fed on grain and more of a kind of
fat thought to be
C. wild animals have less total fat than that of livestock fed on grain and have more
fat of a kind thought to be
D. total fat of wild animals is less than livestock fed on grain and they have more fat
of a kind thought to be
E. total fat is less in wild animals than that of livestock fed on grain and more of
their fat is of a kind they think is

Between B and C, what is your pick ?
Is the comparison in C correct ?
Thanks.

by StaceyKoprince Tue Jul 17, 2007 7:17 pm

B. It correctly compares wild animals to livestock fed on grain and constructs the "less X and more Y" idiom correctly.

C compares wild animals to "that of" livestock... what is "that of" referring to? It also says "have less X and have more Y" - we don't need the second have. The first have can apply to both parts of the idiom.
Stacey Koprince
Instructor
Director of Online Community
ManhattanGMAT
Samy

这是第一个回答，指出C选项里的that of 的错误，that没有指代对象

by RonPurewal Tue Feb 12, 2008 6:19 am

when you see a comparison, you need to boil the comparison down to the SINGLE NOUNS/PRONOUNS that are compared. this means, inter alia, that you have to dispense with modifiers, prepositional phrases, and the like - the same irrelevant constructions that go out the window when you consider other types of agreement (like subject-verb agreement).

in the example you've cited, the comparison is between PROTEIN ('in rice' is a modifying prepositional phrase, so it gets chucked) and THAT (which of course refers to protein), and is therefore proper.

in q24 choice c, the comparison is between ANIMALS and THAT (which in this case stands for FAT). you can't consider livestock to be the second half of the comparison, because it's part of a prepositional phrase (which is a modifier and therefore can't be part of the comparison).
这是Ron的解释

DeliciaAn · 发表于 2015-10-21 15:00:28

LincolnLiu 发表于 2015-8-28 22:00
(A) 选项：wild animals have less total fat than do livestock fed on grain and more of a kind of fat ...

这个，个人认为补充的do是没有问题的，若是还原have，是have为完成时助动词时才还原为have的。而这里的have是有，是动词不是那个时态的have done里的have,所以是do没有问题。
一点浅见。

morimori · 发表于 2015-10-21 21:23:05

According to recent studies comparing the nutritional value of meat from wildanimals and meat from domesticated animals, wild animals have less total fat than do livestock fed on grain and more of a kind of fat they think is good for cardiachealth.

(A) wild animals have less total fat than do livestock fed on grain and moreof a kind of fat they think is
(B) wild animals have less total fat than livestock fed on grain and more of a kind of fat thought to be
(C) wild animals have less total fat than that of livestock fed on grain andhave more fat of a kind thought to be
(D) total fat of wild animals is less than livestock fed on grain and they havemore fat of a kind thought to be
(E) total fat is less in wild animals than that of livestock fed on grain andmore of their fat is of a kind they think is

先弄清楚句子在说什么。句子中比较部分是：1.野生动物的总脂肪比家养牲畜少 2.野生动物有更多的某种脂肪，这种脂肪被认为是好的

A：我认为前半部分的比较没有问题，这里do和have都可以，do只不过作为助动词罢了，都没有歧义。我认为问题出在后半部分，they指代的是谁？wild animals？还是livestocks？都不对吧，think的主语应该是scientists吧，但是前面没有这个先行词，所以问题出在这个代词这里。
B:可以看出这里是主语比较，这里的助动词可以省略，为什么呢？因为省略了以后不会有歧义啊，我们解读的方式只有一种：野生动物比家养动物含有更少的脂肪。另一种野生动物含有的脂肪比所含有的家养动物少，明显不合逻辑嘛，所以就不会有歧义，可以省略助动词。
这个就跟 I drink more milk than you（drink/do）一样，这里的省略是可以的，因为我不会喝你啊。
C：that of本来是想指代回fat的，但是他不可以。即使他可以，指代回去以后比较对象也有歧义，是wild animals和that（fat）比还是fat和that（fat）比？
D：首先比较对象变成了total fat和livestock，错误了。其次，后半部分的parallelism不好，they也没有指代对象
E：比较对象的parallelism不好（ in wild animals & of livestock）；their的指代对象也有问题；they的错误和A一样

至于你问的

A... than do livestock... B. than livestock C. that of livestock

他们都有可能正确A: wild animals have less total fat than do livestock fed on grain
B: wild animals have less total fat than livestock fed on grain
C: the total fat of wild animals is less than that of livestock fed on grain

最重要的还是弄清比较对象，省略的问题不要执着于规则，而是要看句子有没有歧义，我觉得很难找到一个通式。

希望能帮到你。

helloken · 发表于 2016-5-7 04:56:08

这里不能选C的原因问题出在后边的第二个比较。可以理解为第一个比较比较的是total fat，第二个比较比较的是a kind of fat，如果中间用that of，默认指的是第一个total fat，那么在进行第二个比较的时候就变成两个东西在比了，逻辑上有问题，所以不选。

弥小岛 · 发表于 2016-6-18 18:13:59

morimori 发表于 2015-10-21 21:23
According to recent studies comparing the nutritional value of meat from wildanimals and meat from d ...

你好但是OG90 也是主语的比较却说一定要用those of
Prices at the producer level are only 1.3 percent higher now than a year ago and are going down, even though floods in the Midwest and drought in the South are hurting crops and therefore raised corn and soybean prices.
(A) than a year ago and are going down, even though floods in the Midwest and drought in the South are hurting crops and therefore raised
(B) than those of a year ago and are going down, even though floods in the Midwest and drought in the South are hurting crops and therefore raising
(C) than a year ago and are going down, despite floods in the Midwest and drought in the South, and are hurting crops and therefore raising
(D) as those of a year ago and are going down, even though floods in the Midwest and drought in the South hurt crops and therefore raise
(E) as they were a year ago and are going down, despite floods in the Midwest and drought in the South, and are hurting crops and therefore raising
这里B选项是正确的
错误 Prices at the producer level are only 1.3 percent higher now than a year ago
正确 Prices at the producer level are only 1.3 percent higher now than those of a year ago

Comparison什么时候可以省略（OG16 111）

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Comparison什么时候可以省略（OG16 111）