总结反思他人的错误之处，以此来指导修正自己的行为是非常有必要的，在GMAT写作中也是一样，了解GMAT分数低的原因，自己就可以在日常备考中尽量避免这些错误。小编今天就为大家介绍下那些GMAT作文分数较低的原因。
第一、样本不足
The evidence the author provides is insufficient to support the conclusion drawn from it. One example is logically unsounded to establish a general conclusion (The statistics from only a few recent years are not necessarily a good indicator of future trends), unless it can be shown that A1 is representative of all A. It is possible that.... In fact, in face of such limited evidence, the conclusion that B is completely unwarranted.
第二、无因果联系
The author commits a fallacy of causal oversimplification. The line of the reasoning is that because A occurred before B, the former event is responsible for the latter. (The author uses the positive correlation between A and B to establish causality. However, the fact that A coincides with B does not necessarily prove that A caused B.) But this is fallacious reasoning unless other possible causal explanations have been considered and ruled out. For example, perhaps C is the cause of these events or perhaps B is caused by D.
第三、错误类比
The argument rests on the assumption that A is analogous to B in all respects. This assumption is weak, since although there are points of comparison between A and B, there is much dissimilarity as well. For example, A..., however, B.... Thus, it is likely much more difficult for B to do....
第四、时地全等
The author commits the fallacy of “all things are equal”. The fact that happened two years ago is not a sound evidence to draw a conclusion that.... The author assumes without justification that the background conditions have remained the same at different times or at different locations. However, it is not clear in this argument whether the current conditions at AA are the same as they used to be two years ago. Thus it is impossible to conclude that....
第五、二者择一
The author assumes that AA and BB are mutually exclusive alternatives and there is no room for a middle ground. However, the author provides no reason for imposing an either-or choice. Common sense tells us that adjusting both AA and BB might produce better results.
第六、结论无据
The author falsely depends on gratuitous assumption that.... However, no evidence is stated in the argument to support this assumption. In fact, this is not necessarily the case. For example, it is more likely that.... Therefore, this argument is unwarranted without ruling out such possibility.
第七、可疑调查
The poll cited by the author is too vague to be informative. The claim does not indicate who conducted the poll, who responded, or when, where and how the poll was conducted. (Lacking information about the number of people surveyed and the number of respondents, it is impossible to access the validity of the results. For example, if 200 persons were surveyed but only 2 responded, the conclusion that...would be highly suspect. Because the argument offers no evidence that would rule out this kind of interpretations,) Until these questions are answered, the results of the survey are worthless as evidence for the conclusion.
以上就是对GMAT作文分数较低的原因的分析，希望能对大家的备考有所帮助，大家在平日练习中也要有意识的使自己避免出现类似的错误，要使得自己的每个阶段的备考都要有价值。
TIPS：GMAT作文段落赏析
1. It is widely acknowledged that extensive deforestation contributed to heavy summer flooding . Experts argue that China must introduce a massive afforestation program . But I doubt whether afforestation alone will solve the problem .
人们普遍认为过度砍伐造成了夏季特大洪水。专家认为中国必须推行大规模的植树造林计划。但我对仅仅植树造林就能解决问题表示怀疑。
2. Most people are of the opinion that wealth provides solutions to all problems . But in spite of the material benefits wealth provides , I believe one should abandon the pursuit of materialism and instead concentrate on the pursuit of happiness .
大多数人认为财富为所有问题提供解决的办法。但是，我认为，尽管财富提供物质上的利益，一个人应该放弃物质至上的追求，而是集中精力追求幸福。
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GMAT写作不规范用句应对方法实例讲解 http://gmat.zhan.com/tifen/31740.html
