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GMAT句子改错700+高分难题精讲解析

小7 2018-12-20 15:27:26
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众所周知,GMAT句子改错这个模块对同学们来说算是一种挑战。之前大家都没有碰到过这种题型。很多人在一开始去准备的时候肯定有自己去搜索过gmat到底应该怎么备考。而很多情况下你会发现众多的网站都用语法去称呼这个模块,其实这是不对的。这会使你对sc有一个错误的理解: “嗯sc就是考语法的,只要攻克语法就可以了。”其实这个想法是完全错误的。要想真正地在这个考试中拿到高分,一定要去关注sc的逻辑语义。语法只是它最基本的考察点。今天雷哥GMAT培训就通过几道700+的难题来带大家看一看做sc的难题我们应该从何处着手。

 

例题1:

To estimate the expansion rate of the universe is a notoriously difficult problem because there is a lack of a single yardstick that all distances can be measured by.

A. To estimate the expansion rate of the universe is a notoriously difficult problem because there is a lack of a single yardstick that all distances can be measured by

B. Estimating the expansion rate of the universe is a notoriously difficult problem because there is no single yardstick by which all distances can be measured 

C. Because there is a lack of a single yardstick to measure all distances by, estimating the expansion rate of the universe is a notoriously difficult problem 

D. A notoriously difficult problem is to estimate the expansion rate of the universe because a single yardstick is lacking by which all distances can be measured

E. It is a notoriously difficult problem to estimate the expansion rate of the universe because by no single yardstick can all distances be measured


全句划线的题目就是逻辑语义题。先看整个原句的句法结构有没有问题,没有问题我们要去关注逻辑语义。原句首先是说去估计宇宙扩大的速率是一个大家都知道的难题因为缺少一把所有距离都可以测量的尺子。语法没有太大的问题,但是不符合表达习惯。all distances can be measured by , 当定语从句中出现介词的时候,除了固定搭配之外,介词一般都是提前, that变成which。就像BD这种E选项用了形式主语的形式,没有必要。一般为了避免头重脚轻才会选择这种表达形式,从句中也使用的倒装语义表达的也不够通顺。BD选项就要仔细琢磨它们逻辑语义的差别了,一个说的是没有那么一把尺,一个说的是缺少。缺少的意思本应是存在这么一个东西但是现在缺了。显然是b选项的根本没有那么一把尺子更好。

 


例题2:

The Glass House Mountains in Queensland, Australia, were sighted in 1770 by the English navigator Captain James Cook, by whom they were named supposedly because its sheer wet rocks glistened like glass.

A、by whom they were named supposedly because its

B、by whom they were named supposedly and their

C、naming them supposedly since their

D、who so named them supposedly because their

E、who so named it since supposedly their

 

先看原句的大致意思:在澳大利亚,queensland的山被一个英国的航海家看到了,这个航海家之所以这么命名这些山是因为xxxx. 那判断出原句的表因果关系是对的,B选项马上排除了。since表原因没有because那么好先不优选。c选项使用了状语逻辑主语是山也不对。最后剩下ade选项,发现有指代的问题,究竟应该是their还是its呢?命名mountains,应该是这些mountains的 rocks排除ae.

 


例题3:

As a baby emerges from the darkness of the womb with a rudimentary sense of vision, it would be rated about 20/500, or legally blind if it were an adult with such vision.

A、As a baby emerges from the darkness of the womb with a rudimentary sense of vision, it would be rated about 20/500, or legally blind if it were an adult with such vision.

B、A baby emerges from the darkness of the womb with a rudimentary sense of vision that would be rated about 20/500, or legally blind as an adult.

C、As a baby emerges from the darkness of the womb, its rudimentary sense of vision would be rated about 20/500; qualifying it to be legally blind if an adult.

D、A baby emerges from the darkness of the womb with a rudimentary sense of vision that would be rated about 20/500; an adult with such vision would be deemed legally blind.

E、As a baby emerges from the darkness of the womb, its rudimentary sense of vision, which would deemed legally blind for an adult, would be rated about 20/500.

 

长划线或者是全句划线的题目碰到不要慌张,还是先理解原句想表达的意思。首先as引导从句,表示当….时,但婴儿在子宫中刚刚形成的时候仅有一个初级的视力,它会被定级为20/500,或者是瞎的。it不论指代的是baby还是vision都说不通,因为 后面的rated和legally blind按照语义根本不能平行。所以ab排除.c选项分号前后连接完整的句子,句法结构错误.E选项,定语还是说的这个vision会被认为是瞎的。最后正确答案是d。d选项想要表达的是 成年人有那么一个视力会被认为是瞎的。

 

 

例题4:

With California expected to see severe electricity shortfalls and perhaps blackouts on as many as 30 days this summer, the administration has grown increasingly concerned about public health and safety there.

 

(A) With California expected to see severe electricity shortfalls and perhaps blackouts on as many as 30 days this summer, the administration has grown increasingly concerned about

(B) With California expecting to see severe electricity shortfalls this summer, and there will possibly be blackouts for as much as 30 days, the administration's concern has grown increasingly about

(C) As California is expected to be seeing severe electricity shortfalls and perhaps blackouts on as much as 30 days this summer, the administration's concern is increasing for

(D) Insofar as California is expected to see severe electricity shortfalls this summer, and there will possibly be blackouts as many as 30 days, the administration has increasing concern about

(E) Insofar as California expects to see severe electricity shortfalls and the possibility of blackouts for 30 days this summer, the administration has grown increasingly concerned about

 

先看原句的语义, 随着加州预计会经历多次电的短路和可能断电超过30天,当地政府越来越担心民众的健康和安危。原句的结构是with+n+done的独立主格,+主干。B换成expecting后语义变成加州期待…,后面as much as致命错误,c选项也可由此排除.e选项expects语义不对. d选项主干变,逻辑语义变,和原句相比,还是原句的更好,当局担心…。

 


例题5:

Heating-oil prices are expected to be higher this year than last because refiners are paying about $5 a barrel more for crude oil than they were last year.

A. Heating-oil prices are expected to be higher this year than last because refiners are paying about $5 a barrel more for crude oil than they were

B. Heating-oil prices are expected to rise higher this year over last because refiners pay about $5 a barrel for crude oil more than they did

C. Expectations are for heating-oil prices to be higher this year than last year’s because refiners are paying about $5 a barrel for crude oil more than they did

D. It is the expectation that heating-oil prices will be higher for this year over last because refiners are paying about $5 a barrel more for crude oil now than what they were

E. It is expected that heating-oil prices will rise higher this year than last year’s because refiners pay about $5 a barrel for crude oil more than they did

 

这是一道比较题,还是先去理解原句的意思。原句说的话是油价被预计今年会更高,因为炼油厂今年在提炼原油上要多付5美元一桶。c选项主干变成期望会更高,包括d选项也和原句出入太大而且没有必要使用形式主语。从比较考点来看有比较词的出现一定要有than. BD选项也排除了,剩下AE选项 rise和higher语义有些重复,后面than后面last year’s 省略了动词 rise逻辑语义也不通顺。

 


总的来说,我们拿到难题的时候还是要去关注逻辑语义,再从逻辑语义这一块去做题,记住一个最重要的原则,默认原句合理的逻辑意思是正确的。上述几道题目就是按照先看原句,原句的逻辑语义没有问题还是要依据原句的逻辑走。

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