GRE阅读主题句怎么找
推荐文章
GRE阅读主题句怎么找?快速定位心得分享,我们来看看吧，下面小编就和大家分享，来欣赏一下吧。
GRE阅读主题句怎么找?快速定位心得分享
看阅读文章找主题句是很常用的做法。而在GRE考试中想要正确高效解答阅读题的一个主要方法就是通过快速定位主题句来理解文章意思。那么如何秒找主题句呢?因此，下面小编就来为大家介绍一些定位主题句的方法。
GRE阅读中主题句常见形式
和国内学生写文章不一样，美国人的阅读文章中从来都不出现“I think that，in my opinion，as far as I am considered”此类语言做主题句。通常来说主题句有以下两种形式：
1. 判断句(含情态动词，系动词，正负褒贬词的句子);
2. 概括文章将来结构。
实例讲解主题句定位方法
以这句话为例：Your minds changed my attitude. 这句话中并没有情态动词和系动词，因此这句话自然不是判断句，也就不是主题句。但只要在这句话中加入一个正负褒贬词，即一个词表明作者的态度或观点的词即是判断句了。比如，Your minds successfully changed my attitude即是判断句了。
另外，如果一个句子不是判断句，只要它能够概括文章将来结构，及文章后面会从哪几个方面来说明，也是主题句。比如，People are living longer now. 这句话一定不是主题句，而如果这句话是，People are living longer now since the improvement of food condition and the development of medical technology.这句话即是主题句了。因为它概括了文章后面会从哪几个方向来进行说明。
学会快速定位主题句的实用价值
如果考生在新GRE阅读题中掌握好了主题句判断方法，很多文章便可以很快把握文章的结构框架，帮助后面文章的理解。
比如一篇文章的开头是，Mycorrhizal fungi infect more plants than do any other fungi and are necessary for many plants to thrive， but they have escaped widespread investigation until recently for two reasons. First， the symbiotic association is so well-balanced that the roots of host plants show no damage even when densely infected. Second， the fungi cannot as yet be cultivated in the absence of a living root.
第一句是明显的判断句，即为主题句。而主题句也同时概括了文章的将来结构，即会从“M真菌影响力很强”和“M真菌过去由于两个原因没有得到广泛研究”。下面马上看到了first和second，我们即知道这两个很难读懂的句子无非是两个原因使得M真菌没有得到广泛研究而已，具体是哪两个原因，我们几乎可以忽略不读。
综上所述，在做GRE阅读时，快速定位主题句的方法和技巧是非常实用的，希望大家都能学会掌握和运用这种技巧，提高选对选项的效率，节省考试时间。
GRE阅读例题：遥感技术的前世今生
The age at which young children begin to make moral discriminations about harmful actions committed against themselves or others has been the focus of recent research into the moral development of children. Until recently, child psychologists supported pioneer developmentalist Jean Piaget in his hypothesis that because of their immaturity, children under age seven do not take into account the intentions of a person committing accidental or deliberate harm, but rather simply assign punishment for transgressions on the basis of the magnitude of the negative consequences caused.
However, in recent research, Keasey found that six- year-old children not only distinguish between accidental and intentional harm, but also judge intentional harm as naughtier, regardless of the amount of damage produced. Both of these findings seem to indicate that children, at an earlier age than Piaget claimed, advance into the second stage of moral development, moral autonomy, in which they accept social rules but view them as more arbitrary than do children in the first stage. (163 words)
8.According to the passage, Piaget and Keasey would not have agreed on which of the following points?
(A) The kinds of excuses children give for harmful acts they commit
(B) The age at which children begin to discriminate between intentional and unintentional harm
(C) The intentions children have in perpetrating harm
(D) The circumstances under which children punish harmful acts
(E) The justifications children recognize for mitigating punishment for harmful acts
9.According to the passage, Keasey's findings support which of the following conclusions about six-year-old children?
(A)They have the ability to make autonomous moral judgments.
(B)They regard moral absolutism as a threat to their moral autonomy.
(C)They do not understand the concept of public duty.
(D)They accept moral judgment made by their peers more easily than do older children.
(E)They make arbitrary moral judgments.
P4
1
The term "remote sensing" refers to the techniques of measurement and interpretation of phenomena from a distance.
“遥感” 这个词涉及远距离测量及解读信息的技术。
2
Prior to the mid-1960's the interpretation of film images was the primary means for remote sensing of the Earth's geologic features.
1960 年代中期以前，地质学特征的遥感主要是通过对胶片上图像的解读。
3
With the development of the optomechanical scanner, scientists began to construct digital multispectral images using data beyond the sensitivity range of visible light photography.
随着光学机械扫描仪的发展，科学家开始用超越可见光摄影敏感范围的数据，构建多光谱数码图像。
4
These images are constructed by mechanically aligning pictorial representations of such phenomena as the reflection of light waves outside the visible spectrum, the refraction of radio waves, and the daily changes in temperature in areas on the Earth's surface.
这些图像的构建，要通过对一些现象进行机械校准，像不可见光的反射，无线电波的折射，以及该区域内地表温度的日常变化。
5
The advantage of digital over photographic imaging is evident: the resulting numerical data are precisely known, and digital data are not subject to the vagaries of difficult-to-control chemical processing.
数码图像相较于胶片感光成像的优势显而易见：由大量数据产生的结果更精确，而且数据不会受制于各种难以掌控的化学步骤。
8. It can be inferred from the passage that a major disadvantage of photographic imaging in geologic mapping is that such photography
(A) cannot be used at night
(B) cannot focus on the details of a geologic area
(C) must be chemically processed
(D) is always enhanced by digital reconstruction
(E) cannot reflect changes over extended periods of time
选 C
细节题。
问传统办法的 major disadvantage 其实等于问新技术的 advantage，回到句 5：
The advantage of digital over photographic imaging is evident: the resulting numerical data are precisely known, and digital data are not subject to the vagaries of difficult-to-control chemical processing.
细节题是不是可以不读文章直接用关键字回溯文段来节省时间?
我个人觉得不能，因为很多细节题的问法是相对隐蔽的，不读懂文段大意，定位经常可能不准，一个稍微精致的干扰就能让人中招。而这种方法之所以听起来不错，因为它和所有事后诸葛一样。所以，老实点，不要想取巧了。
GRE阅读:每天练习长难句
1. 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. (4+)
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。
难句类型：复杂修饰、插入语、省略
解释：在Although引导的分句中，谓语shows后面跟着一个长长的宾语从句，从句中先出现一个插入语as an object becomes familiar,之后的内容是由and 连接的两套并列的主谓宾。其实and前后就是两个句子，只不过作者省略了后面的句子中与前面相同的引导词that和谓语become。
句子中有一个生词holistic，其实即使不认识，也能用合理化原则猜出它是后面serial的反义词、parallel的同义词，大约是统一、完整或同时的意思;其实只要能理解到其是与serial相反的意思即可。
意群训练：Although some experiments show that，as an object becomes familiar，its internal representationbecomes 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.
GRE阅读每日长难句解析
This preference for exogamy，Gutman suggests， may have derived from West African rules governing marriage，which，though they differed from one tribal group to another，all involved some kind of prohibition against unions with close kin. (3+)
难句类型：复杂修饰、插入语
译文：古特曼表示，这种对于外部通婚的偏爱很有可能缘起于西部非洲制约着婚姻的规定，尽管这些规定在一个和另一个部落群体之间不尽相同，但都涉及到某种对近亲联姻(union with close kin)的禁止。
解释：本句有两个插入语，第一个插入语Gutman suggests割裂了主句的主语和谓语。West African rules后跟着两个修饰成分，第一个是分词修饰(governing marriage), 第二个是以which引导的非限定性定语从句，从句中出现了第二个插入语though they differed from one tribal group to another，又割裂了从句引导词与谓语之间的联系。
意群训练：This preference for exogamy，Gutman suggests， may have derived from West African rules governing marriage，which，though they differed from one tribal group to another，all involved some kind of prohibition against unions with close kin.
GRE阅读主题句怎么找相关文章：
GRE阅读主题句怎么找
