很多gre考生可能在高中的时候就开始学习英语语法中的虚拟语气,但是大多数人学会的仅仅是虚拟语气中的一些规则,估计现在还忘了,这个只是只明其表,不明其理。在gre阅读中虚拟语气就有一种很有用的含义,那就是见到虚拟语气就要想到取非。比如作者如果写到:如果我能够把韦氏字典都背完,那我GRE阅读肯定没有问题了。这句话其实想要表达的问题就是我的GRE阅读有问题。
下面我们来分析下,如何用取非的思想处理GRE阅读考试中的虚拟语气。
若在文章中看到虚拟语气,考虑直接取非反义理解,迅速把握作者态度。
如下面这句话:
例一:Perhaps, some scientists thought, migrants determine their geographic position on Earth by celestial navigation, almost as human navigators use stars and planets, but this would demand of the animals a fantastic map sense.
这句话看似很长,翻译成为中文的意思是:有些科学家认为,就像人类采用恒星和行星来定位一样,候鸟或许也是采用天体的导航才得以确定它们所处的地理位置,但这要求这类动物具有令人难以置信的地图感。中文读过去都让人头疼。其实我们用虚拟语气取非的思想来处理,其要表达的意思就很简单,对前半句话取非,说白了就是前半句话是行不通的,也就是migrants cannot determine their geographic position on Earth by celestial navigation。可以知道作者对这种解释持负评价。
我们再来看个例子:
例二:According to natural selection theory, a worker would enhance her fitnessor ability to propagate her genesby hatching her own eggs in addition to or in place of the queens。
这句话也是虚拟语气,我们直接取反理解,作者想要表达的就是 a worker will not enhance her
运用这种取非的思想我们可以迅速的把握作者的态度,以及作者想要表达的真实意思。就不用先翻译成绕口的中文,再拼命的思索其中的含义,可以有效地为考试争取时间。
在题干中看到虚拟语气,大多需要用到取非思想,与之相对应的一种题型是GRE阅读题中常见的一种,叫做改进型取非题。看例子之前,先简单解释下什么是改进型取非题。很简单,如果题干问如果一个对象怎样会更好则是改进型取非题,来看具体的例子:
例:It can be inferred from the passage that the first theories of grazer control mentioned in line 3 would have been more convincing if researchers had been able to,这是一个典型的改进型取非题题干,问的是第三行第一个理论怎样会更好。
逻辑思路:既然是改进,原文肯定说到了它的不好之处或者有unless的句子,我们把造成不好的原因取非,就是所要的答案了。
按照此思路定位原文三行,看到后面有这样一句话A low number of algal cells in the presence of a high number of grazers suggested, but did not prove, that the grazers had removed most of the algae。注意看插入语部分的but did not prove,这个就是缺点,取非就是prove再看五个选项:
observe high phytoplankton numbers under natural lake conditions
discover negative correlations between algae and zooplankton numbers from their field research
understand the central importance of environmental factors in controlling the growth rates of phytoplankton
make verifiable correlations of cause and effect between zooplankton and phytoplankton numbers
invent laboratory techniques that would have allowed them to bypass their field research concerning grazer control
一眼扫过去就只有一个选项在讲证明,就是D中的verifiable。所以答案选D。很快解完此题。
取非的思路除了可以在虚拟语气中使用,还可以在另一种逻辑关系中使用,就是强对比的关系,也就是GRE阅读题中另一种常考题型强对比互取非题,其主要特点是:原文中有强对比的双方,题干只问及其中一方,答案是对另一方叙述的取非;或者题干和原文存在强对比要素,如典型的时间要素,答案也是对原文的叙述取非。
来看个简单的例子,
例:The author suggests that, before the early 1950s, most historians who studied preindustrial Europe did which of the following
思路:在题干中看到了1950s,第一反应就是要回原文定位,发现原文只讲到了in the early 1950s并没有before,这显然就是时间上一个取非的关系,我们把in the early 1950s干的事情取个非,就是之前干的事情。答案就很好选了,在此不举出来了。
gre阅读虚拟语气中这个思路很好理解,比如说我1995年第一次去北京。很显然,1995年以前我就没有去过北京。这就是时间状语的取非。其它的强对比关系,相信考生可以一眼看出,
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