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GMAT句子改错逻辑语义怎么解?

雷小豆 2020-07-15 16:22:42
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我们知道逻辑语义在GMAT句子改错里是最重要的核心考点,也是贯穿整个GMAT考试的核心,在掌握其他考点的前提之下,一定要把逻辑语义融入到每一道题里去,不管是高分题还是低分题,一个句子要表达明确,是不是得有逻辑? 所以,养成一个结合考点和措辞看逻辑语义的好习惯,对我们做好SC是至关重要的,接下来雷哥网GMAT为大家整理的5道逻辑语义题目的重点部分的讲解,希望对大家有帮助。


1、The Achaemenid empire of Persia reached the Indus Valley in the fifth century B.C., bringing the Aramaic script with it, from which was derived both northern and southern Indian alphabets.     

(A) the Aramaic script with it, from which was derived both northern and

(B) the Aramaic script with it, and from which deriving both the northern and the

(C) with it the Aramaic script, from which derive both the northern and the

(D) with it the Aramaic script, from which derives both northern and

(E) with it the Aramaic script, and deriving from it both the northern and

讲解:C


(1)主干是empire reached the valley,bringing... (虽然这里bringing是俩逗号之间的插入语,但由于后面的from which介宾结构是个修饰,所以句子主干其实还是svo,doing的形式)后面是伴随状语,来到山谷的同时带来了一些手稿,但由于from which这个介词+关系代词构成的介宾结构,也就是介词短语,就近修饰A,B里的it逻辑语义错误,所以应该修饰前面的script;又因为from which介词短语放句首倒装,真正主语在后面,所以derive应该是和后面的alphabets保持主谓一致。所以C没问题。

(2)D里derives和后面alphabets主谓不一致。E选项and前面没有词和deriving平行,不可能是和状语的bringing平行,逻辑语义不对;也不可能和reached平行,语义也不对。最后一点错误是E项里的两个it分别指代了不同的两个东西,第一个it指代empire,第二个it指代script,所以同一个代词分别指代不同东西,肯定会有歧义。

(3)the script with it和with it the script都是正确的,只是在这道题里用with it the Aramaic script更优。

 

2、More than 300 rivers drain into Siberia's Lake Baikal, which holds 20 percent of the world's fresh water, more than all the North American Great Lakes combined.  

(A) More than 300 rivers drain into Siberia's Lake Baikal, which holds 20 percent of the world's fresh water, more than all the North American Great Lakes combined.

(B) With 20 percent of the world's fresh water, that is more than all the North American Great Lakes combined, Siberia's Lake Baikal has more than 300 rivers that drain into it.

(C) Siberia's Lake Baikal, with more than 300 rivers draining into it, it holds more of the world's fresh water than all that of the North American Great Lakes combined, 20 percent.

(D) While more than 300 rivers drain into it, Siberia's Lake Baikal holds 20 percent of the world's fresh water, which is more than all the North American Great Lakes combined.

(E) More than all the North American Great Lakes combined, Siberia's Lake Baikal, with more than 300 rivers draining into it, holds 20 percent of the world's fresh water.

讲解:E  


(1)原文正确。全局划线必考逻辑。主干就是rivers drain into Siberia's Lake,后面插入语优先向前修饰贝加尔湖,后面第二个more than是一个同位语就近修饰water,所以原文都是在表达水量的问题,没有歧义。语义即为:超过300多个河流流入到占世界20%的比北美大湖区加起来都还要多的淡水的贝加尔湖。

(2)B选项with一个介词短语,后面是that非限定性定语从句就近修饰water,真正主句是Siberia's Lake Baikal has more than 300 rivers that drain into it.主句里末尾的it多余,that修饰river不简洁,且主次颠倒了,原文drain into是主干里的成分。选项C里S湖跳过插入语之后又来一个主语it,俩主语错;than后all that of不简洁,且that of指代其实是模糊的。D项原文没有while这层关系,人为添加,逻辑错。且into it里的it也是无指代的,多余。

(3)E项虽然结构很正确,但E选项表达的逻辑语义重心是不对的,先来一句,比五大湖加起来都还要多,那是什么加起来还要多?水量还是面积?其实是不明确的,所以原文语义没有问题,就不要轻易改变重心,逻辑肯定会变。

 

3、The cottontail rabbit population in Orange County, California, has increased unchecked in recent years as a result of the removal of the native fox population and the clearing of surrounding woodlands.   

(A) years as a result of the removal of

(B) years as a result of removing

(C) years, resulting from the removing of

(D) years, which is a result of removing

(E) years, which is a result of the removal of

讲解:A  

(1)主干是 population has increased in recent years,那兔子增加的原因是什么呢?是移除本地狐狸种群和清理周围的林地这两个原因,所以原文the removal of和未划线部分的the removal of平行,两个名词短语平行,有自己的名词形式用自己的名词形式,原文没问题。

(2)B项of后面removing和后面的the clearing of不平行。C选项的状语表伴随或结果逻辑语义都不对。

(3)D,E可以排除,which就近修饰years语义错。

 

4、Roughly twice each century the planet Venus passes between the Earth and the Sun, an occasion known as a transit of Venus, during which it makes the outline of the planet visible in stark relief.

A. during which it makes the outline of the planet

B. during which the outline of the planet becomes

C. so that it makes the outline of the planet

D. such that during which the of the planet becomes

E. such that the outline of the planet becomes

讲解:B


(1)主干是planet Venus passes between .. and ...后面是一个介词短语修饰,during which按照语义来讲应该跳跃修饰transit,因为按照逻辑语义来讲,不可能是在金星中间轮廓变明显,所以应该是during which 应该修饰transit。行星金星大约每世纪经过地球和太阳之间两次,在这个期间,她的轮廓变得清晰可见。 原文it多余,所以B没问题。

(2)C项前后没有一个强烈的因果关系,it无指代。 D,E里such that措辞不对,不是表举例的意思,并且such that后面接during which无意义,所以修饰正确和逻辑合理的就是B。

 

5、In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane, which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting.  

(A) which is a substance that promotes blood clotting, but not seriously interfering

(B) a substance that promotes blood clotting, but not seriously interfering

(C) a substance that promotes blood clotting, but does not seriously interfere

(D) which is a substance to promote blood clotting, but does not seriously interfere

(E) which is a substance that promotes blood clotting, but not a serious interference

讲解:C


(1)此题关键是要明白suffices应该是和interfere平行,而不是promotes和interfere平行。整体的结构也就是: svo , 插入语 ,but  v ,修饰。所以语义来讲,也应该是aspirin 足以阻断血栓烷的产生,但又不干扰前列腺的这个产物。

(2)原文but前后不平行,which定语从句修饰没问题;看到B选项之后提示你了,同位语从句优选,但是but前后动词不平行。D里不是物质去promotes,措辞没有定语从句修饰来的清晰。E项里but前后也不平行,interference名词后跟with短语,逻辑语义不对:但不是一个伴随着前列腺环素的产生的干扰?


以上就是今天分享给大家的GMAT句子改错的一些内容了,希望大家稳定好心态,考出好成绩,加油!

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