GRE阅读文章主体结构基本知识讲解

GRE阅读文章主体结构基本知识讲解 ,了解它们有助阅读提速,下面小编就和大家分享，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。

新GRE阅读考试长难句实例解析

16.Is this a defect,or are the authors working out of,or trying to forge,a different kind of aesthetic?

这究竟是一种缺陷呢，或者是否表明，这些作者是在按照一种与众不同的美学体系进行创作，抑或是在试图创立一种与众不同的美学体系?

17.Black Fiction surveys a wide variety of novels,bringing to ourattention in the　process some fascinating and little-known works likeJames Weldon　Johnson's Autobiography of an Ex-Colored Man.

《黑人小说》考察了极为广泛的一系列小说，在此过程中让我们注意到了某些引人入胜但却鲜为人知的作品，如詹姆斯·韦尔登·约翰逊(James WeldonJohnson)的《一个曾经是有色人的自传》(Autobiography of an Ex-Colored Man)

18.Although these molecules allow radiation at visible wavelengths,where most of the energy of sunlight is concentrated,to passthrough,they absorb some of the longer-wavelength,infrared emissionsradiated from the Earth's surface，radiation that would otherwise betransmitted back into space.

虽然这些分子允许可见波长(visiblewavelength)的辐射——阳光的绝大部分能量就汇集于此——不受阻挡地穿透，但它们却会吸收某些较长波长(longer-wavelength)，亦即从地球表面辐射出的红外发射(infrared cmission)，这种辐射若不是二氧化碳的缘故就会被重新输送回太空。

19.The role those anthropologists ascribe to evolution is not ofdictating the details of human behavior but one of imposingconstraints-ways of　feeling,thinking,and acting that "come naturally"in archetypal situations in any culture.

这些人类学家所归诸于生物进化的作用，不是规定人类行为的种.种细节，而是将各种限制强加于人类——即在任何文化的典型情景中都会“自然表露”的情感、思维、以及行动方式。

20.A low number of algal cells in the presence of a high number ofgrazers suggested,but did not prove,that the grazers had removed mostof the algae.

在存在大量食草动物的同时却只有少量的水藻花粉囊，这暗示出——但没能证明——食草动物已吞噬了大部分水藻。

21.Studies by Hargrave and Geen estimated natural community graz-ingrates by measuring feeding rates of individual zooplankton species inthe　laboratory and then computing community grazing rates for fieldconditions using the known population density of grazers.

由哈格雷夫(Hargrave)和吉恩(Geen)所进行的研究，对自然条件下的群落食草比例进行了估计，其手段是通过测量出实验室内单独的浮游动物种类的结食比例，然后利用已知的食草动物种群密度，计算出实地状况下的群落食草比例。

新GRE阅读考试长难句实例解析

8. Such variations in size， shape，chemistry， conduction speed， excitation threshold，and the like as had been demonstrated in nerve cells remained negligible in significance for any possible correlation with the manifold dimensions of mental experience.??

9.Although qualitative variance among nerve energies was never rigidly disproved，the doctrine was generally abandoned in favor of the opposing view，namely，that nerve impulses are essentially homogeneous in quality and are transmitted as “common currency” throughout the nervous system. Other experiments revealed slight variations in the size，number， arrangement，and interconnection of the nerve cells，but as far as psychoneural correlations were concerned，the obvious similarities of these sensory fields to each other seemed much more remarkable than any of the minute differences. Although some experiments show that，as an object becomes familiar，its internal　representation becomes more holistic and　the recognition process correspondingly more parallel，the weight of evidence　seems to support the serial hypothesis， at least for objects that are not notably simple and familiar.

虽然某些实验表明，随着一个物体变得熟悉起来，其内心再现图像亦更具整体感，辨认过程相应地更趋于平行，但证据的砝码似乎在支持序列假设(serial hypothesis)，至少是对于那些不甚简单、不甚熟悉的物体来说。

10.In large part as a consequence of　the feminist movement，historians have focused a great deal of attention in recent years on determining more accurately the status of women in　various periods.

在很大程度上，由于女权主义运动(feminist movement)的缘故，史学家近年来汇聚了大量的注意力，来更为准确地确定妇女在各个历史时期的地位。

11.Thus，for instance，it may come as a shock to mathematicians to learn that the Schrodinger equation for the hydrogen atom is not a literally correct description of this atom，but only an approximation to a somewhat more correct equation taking account of spin，magnetic dipole，and relativistic effects;and that this corrected　equation is itself only an imperfect approximation to an infinite set of　quantum field-theoretical equations.

因此，举例来说，对数学家而言，了解到下述情形可能会令其惊愕不已，即薛定谔(Schrodinger)的氢原子方程式并非是对该原子作出的一种绝然正确的描述，而仅仅是个近似值，趋近于一个在某种程度上更为正确的将自旋、磁性偶极子、以及相对论效应考虑在内的方程式;而这个得以纠正的方程式就其本身而言也只是一个不完美的近似值，趋近于无穷无尽的一整套量子场论方程式。

新GRE阅读考试长难句实例解析

1.That sex ratio will be favored which maximizes the numberof　descendants an individual will have and　hence the number of genecopies　transmitted.

那种性别比例能在最大程度上增加一个个体所能拥有的后代数量，并因此能在最大程度上增加所传递到后代身上去的基因复制品的数量。

2.Hardy's weakness derived from his apparent inability to controlthe comings and goings of these divergent impulses and from hisunwillingness to cultivate and sustain the energetic and　risky ones.

哈代的缺陷一方面缘起于他的某种明显的无能，无法控制好那结不尽相同的创作冲动的穿梭往来;另一方面缘起于他不愿意去培养和维持那些富于生机活力和风险性强的创作冲动。

3.Virginia Woolf's provocative statement about her intentions inwriting Mrs. Dalloway has regularly been　ignored by the critics,sinceit highlights an aspect of her literary interests very different fromthe traditional picture of the "poetic" novelist concerned withexamining states of reverie and vision and with following the intricatepathways of individual consciousness.

弗吉尼亚.伍尔夫(VirginiaWoolf)在创作《黛洛维夫人》(Mrs.Dalloway)时有关其创作意图的这番发人深思的陈述，迄今为止一贯为文学评论家们所忽略，因为它突出反映了她诸多文学兴趣中某一方面，而这一方面则与人们对“诗性”小说家(poeticnovelist)所形成的传统见解大相径庭。所谓的“诗性”小说家，所关注的是审视想入非非和白日梦幻的诸般状态，并致力于追寻个体意识的通幽曲径。

4.Although Gutman admits that forced separation by sale wasfrequent,he shows that the slaves' preference,revealed most clearly onplantations where sale was infrequent,was very much for stablemonogamy.

虽然古特曼承认，由于奴隶买卖而造成的被迫离散甚为频繁，但他还是证明，奴隶的偏爱——在那些奴隶买卖并不频繁的种植园上被最为显著地揭示出来——在很大程度上侧重于稳定的一夫一妻制。

5.Gutman argues convincingly that the stability of the Blackfamily encouraged　the transmission of-and so was crucial insustaining-the Black heritage of folklore,music,and religiousexpression from one generation to another,a heritage that slaves werecontinually fashioning out of their African and American experiences.

古特曼人令人信服地论辨道，黑人家庭的稳定有助于包括民间传说、音乐、及宗教表达在内的黑人文化遗产一代一代传递下去，因而在维持文化遗产方面也起着至关重要的作用，而对于这种文化遗产，黑奴们不断地从其非洲和美洲的经历中予以丰富发展。