GRE阅读文章涉及的词汇量大,包含较多的专业词汇;句子长而复杂,找出全句的主干耗时费力;再加上陌生的概念与背景知识,往往令GRE考生谈阅读而色变。想要做好GRE阅读,学会从宏观上把握文章,抓住文章的主体结构是关键。下面小编就和大家分享GRE阅读文章主体结构基本知识讲解,希望能够帮助到大家,来欣赏一下吧。
GRE阅读文章主体结构基本知识讲解
GRE阅读主体结构介绍
GRE阅读文章常见“主体结构”有三种:
1. 结论-解释型(也叫论点-解释型)
2. 新老观点对比型
3. 现象解释型(包含问题-解决方案型)
结论-解释型结构分析
首先是“结论-解释型”文章。这类文章在开始有一个判断句,一般是文章的结论,也是文章的主题。这个判断句的谓语部分通常包含系动词(is, remain, prove, turn out, appear等)或情态动词(can, may, should, must等),而且含有表示态度的词汇(如形容词等)。例如:
Because of its accuracy in outlining the Earth's subsurface, the seismic-reflection method remains the most important tool in the search for petroleum reserves. In field practice, a subsurface is mapped by arranging a series of wave-train sources, such as small dynamite explosions, in a grid pattern…
文章首句指出:“由于地震反射法在勾划地球的地下层面这方面的准确性,该方法一直是探寻石油储备的最重要的工具。”这是一个判断句,为结论。其中remains为系动词,而most important为态度词,表示作者对“地震反射法”持非常正面的评价。后文应解释“地震反射法”的具体过程。 第二句话对解释进行总的说明:“在实地作业中,通过将一系列波列源,诸如小规模炸药爆炸,排列成一个网格模式,从而将地下层面标绘出来。”接下来是“地震反射法”的详细过程。
新老观点对比型结构分析
GRE阅读文章的第二种常见结构是“新老观点对比型”。 这类文章在开始提出老观点,然后提出新观点并进行论述。通常新观点是文章的主题。老观点出现的标志词有:
1. 传统观点: has been, traditionally, until recently等
2. 大众观点:frequently, widely, many等
新观点出现的标志词有:however, recently, now等。
例如:
Traditionally, pollination by wind has been viewed as a reproductive process marked by random events in which the vagaries of the wind are compensated for by the generation of vast quantities of pollen, so that the ultimate production of new seeds is assured at the expense of producing much more pollen than is actually used。
However, a number of features that are characteristic of wind-pollinated plants reduce pollen waste…
文章首句指出:“传统上,风媒授粉过程一直被视为是一个以随机事件为标志的繁殖过程,其中风的不确定性通过产生大量花粉而得以补偿,因此,新种子的最终繁殖得以保证,而此举的代价是所需产生的花粉要远远超过实际的使用量。”由第一个词traditionally可知文章首句为老观点(由于风的不确定性,风媒植物要产生大量花粉补偿),那么本文的结构是“新老观点对比型”。
第二段首句出现了GRE阅读中的标志性转折词however,说明这句话就是新观点:“但是,风媒植物所独有的一系列特征可减少花粉浪费。”这说明风媒植物除了可以产生大量花粉加以补偿的消极策略之外,还可以通过一些积极机制减少花粉损失,不一定需要产生大量花粉。
现象解释型结构分析
GRE阅读文章的第三种常见结构是“现象解释型”。文章开始提出一个现象,然后解释现象。解释是主题。有多个解释时,作者一般对前面的解释持负面评价,对最后的解释持正面评价。提出现象时的标志词有:phenomenon, fact; problem, difficulty, puzzle, question等。例如:
What causes a helix in nature to appear with either a dextral ("right-handed,"or clockwise) twist or a sinistral ("left-handed," or counterclockwise') twist is one of the most intriguing puzzles in the science of form…What mechanisms, control handedness and keep left-handedness rare?
It would seem unlikely that evolution should discriminate against sinistral snails if sinistral and dextral snails are exact mirror images, for any disadvantage that a sinistral twist in itself could confer on its possessor is almost inconceivable. But left- and right-handed snails are not actually true mirror images of one another…
But this evolutionary mechanism combining dissymmetry, anatomy, and chance does not provide an adequate explanation of why right-handedness should have become predominant…
Here, the evolutionary theory must defer to a theory based on an explicit developmental mechanism that can favor either right- or left-handedness…Thus, the path to a solution to the puzzle of handedness in all snails appears to be as twisted as the helix itself。
是什么样的原因致使自然界中的螺旋体呈现出右旋(“右向旋转的”,或顺时针的)或左旋(“左向旋转的,”或反时针的)?这是形态科学中一个最引人入胜的不解之谜....究竟是一些什么样的机制控制着旋转方向,并使左旋的比例为数稀少呢?
假如左旋和右旋蜗牛呈完全一致的镜像对称的话,那么进化对左旋蜗牛不利,这近乎不太可能。几乎无法想象左旋本身会给左旋者带来任何不利之处。然而,左旋与右旋蜗牛彼此间实际上并不呈真正的镜像对称....
但是,这种结合不对称、解剖学和偶然性的进化论机制并未提供一种充分的解释,以说明蜗牛的右旋何以会成为主要的旋向....
于是,进化论必须让位于支持右旋或左旋的明确的发育机制为基础的理论....因此,解决所有蜗牛身上旋向之谜的道路似乎与这一螺旋体本身一样曲折复杂。
上文在第一段最后提出一个问题:“究竟是一些什么样的机制控制着旋转方向,并使左旋的比例为数稀少呢?”这个问题就是一个现象:螺旋体中左旋的比例少。有问题就有解答,有现象就有解释。第二段从进化论的角度解释这一现象。但是,GRE阅读文章中一般对进化论的解释持负面评价,所以需要寻找新的解释。第三段否定了进化论的解释。在末段,作者以发育机制(developmental mechanism)解释“为何左旋少、右旋多”。
把握了文章的三种主体结构以后,做文章后的许多题时易如反掌。由此可见,把握文章的主体结构,而不陷入文章词句与细节的泥沼中,能让考生在面对GRE阅读时更准确快速的完成解答,提高做题效率和正确率。建议广大GRE考生在做阅读题时不妨参照本文方法,也许会有一些收获。
GRE长难句练习及解析:蓝袜女
However,as they gained cohesion,the Bluestockings came to regard themselves as a women's group and to possess a sense of female solidarity lacking in the salonnieres,who remained isolated from one another by the primacy each held in her own salon. (4-)
起初,蓝袜女们确实模仿了法国沙龙女主人,将男性襄括到其小圈子中来。然则,随着她们获得的凝聚力,她们渐趋将自己视作一女性团体,并拥有了一种妇女团结意识,而这种意识在法国沙龙女主人身上则荡然无存,因为她们每个人在其自己的沙龙中自视甚高而彼此孤立隔绝开来。
难句类型:复杂修饰
解释:本句读到表示并列的连词and开始变难。and之后的不定式与前面的不定式是并列的,to的前面省略了一个与前面一样的谓语came. lacking之后的分词作定语修饰a sense of female solidarity其后的由who引导的定语从句又修饰逗号前面的salonnieres此从句中又有一个定语从句that each salonniere held in her own salon修饰其前的primacy,但是由于引导词that在从句中作宾语,因此被省略。
意群训练:However, as they gained cohesion, the Bluestocking came to regard themselves as a women's group and to possess a sense of female solidarity lacking in the salonnieres, who remained isolated from one another by the primacy each held in her own salon.
GRE长难句练习及解析:资本和企业
Such large, impersonal manipulation of capital and industrygreatly increased the numbers and importance of shareholders as a class, an element in national life representing irresponsible wealthdetached from the land and the duties of the landowners; and almostequally detached from the responsible management of business.
[句子主干]Such large, impersonal manipulation of capital and industrygreatly increased …shareholders as a class, (which was) an element…
[语法难点]本句是典型的非限定性定语从句,难点在其主语和宾语都有较长的短语和of结构限定,并且分句是由两个and相连的3个部分组成的。分句an element…landowners 又带有两个定语从句,一个是(which was)representing…,另一个是(which was)detached…。
可见,定语从句的难点在于经常省略“引导词+be”的结构,从而在理解上容易和分词结构相混淆。
[句子翻译] 对资本和企业的这种大规模的非个人操纵大大增加了股东作为一个阶级的数量和重要性。这个阶层作为国计民生的一部分,代表了非个人责任的财富与土地及土地所有者应尽义务的分离,而且也几乎与责任管理相分离。
2020GRE阅读文章主体结构基本知识讲解相关文章: