托福阅读推论题需要学生依据原文信息进行合理推测，找出符合题意的选项。推论题正确率往往不高，所以为大家整理了题型技巧，希望对大家有帮助。

　　托福阅读推论题每篇文章中出现1-2次，考察学生对于文章中强烈建议但是没有明说的观点的理解程度。相对于托福阅读细节题，学生需要对文章内容有更清晰地把握，才能答对这类题目。判断题目类型的方法是看到题干中出现infer, imply , most likely (least likely) 或probably 等词语。托福阅读推论题常见问法：

　　Paragraph 2 suggests which of the following about X?

　　Which of the following can be inferred from paragraph 2 about X?

　　According to paragraph 3, what do Y indicate about X?

　　According to paragraph 4, what does the author imply about X?

　　托福阅读推论题的三种类型

　　1、一般对比推理

　　在文章中介绍事物1的特征，并给出了事物1、2的特征对比，然后问事物2的特征，解答题目时只要将事物1的特征否定掉就可以。

　　2、时间对比推理

　　在这种推理中，一般有两个形成对比的时间段，它们所具有的特征一般相反。当题干问一个时间段的特征时，只要将与之相反的时间段的特征否定掉就可以了。

　　3、集合概念推理

　　一个大的集合的两个方面形成对比，两者之间存在着互补性关系，也就是一个的增加意味着另一个的减少。反之，相同。

　　解答托福阅读推论题的一般方法

　　遇到这类题型，学生先不要盲目看选项，而要有个大致的解题思路。题干中一般给出关键词A，学生根据题目出现位置对应到段落，找到关键词所在句子；然后根据内容依据以上说明判断题目属于三种推理类型的哪一种；最后根据类型对应的解题方法答题。

　　托福阅读推论题例题分析

　　例题1：Which of the following can be inferred from paragraph 1 about early sea otters?

　　A. It is not difficult to imagine what they looked like.

　　B. There were great numbers of them.

　　C. They lived in the sea only.

　　D. They did not leave many fossil remains.

　　原文1：It should be obvious that cetaceans, whales, porpoises, and dolphins are mammals. They breathe through lungs, not through gills, and give birth to live young. Their streamlined bodies, the absence of hind legs, and the presence of a fluke and blowhole cannot disguise their affinities with land-dwelling mammals. However, unlike the cases of sea otters and pinnipeds (seals, sea lions, and walruses whose limbs are functional both on land and at sea), it is not easy to envision what the first whales looked like.

　　题目解析：early sea otters是题干关键词，回到原文的句子：However, unlike the cases of sea otters and pinnipeds ...从这里可以看出原文存在的对比，双方是sea otters and pinnipeds与“They”(即 cetaceans, whales, porpoises, and dolphins)，属于第一种推理类型。从内容看“They”的特点是“not easy to envision what the first whales looked like”，所以推测sea otters——“easy to envision what the first whales looked like”，正好是A选项。

　　例题2：What can be inferred from paragraph 1 about western farmers prior to 1815?

　　A. They had limited their crop production to wheat, corn, tobacco and cotton.

　　B. They were able to sell their produce at high prices

　　C. They had not been successful in raising cattle.

　　D. They did not operate in a national market economy.

　　原文2：The story of the westward movement of population in the US is, in the main, the story of the expansion of American agriculture of the development of new areas for the raising of livestock and the cultivation of wheat, corn, tobacco, and cotton. After 1815, improved transportation enabled more and more western farmers to escape a self-sufficient way of life and enter a national market economy during periods when commodity prices were high, the rate of westward migration increased spectacularly.

　　题目解析：根据题干关键词western farmers prior to 1815定位(重点关注年代)，可以看到关于“After 1815”的信息，这里就可以猜测解题用到时间对比。只要把1815年之后的内容看懂了，并且在这个内容前面加not即可。文中说到，改善的交通使得越来越多的西部农民摆脱了自给自足的生活，并且进入了国家性的市场经济，那个时候货物的价格很多，所以向西迁移的速率也大幅增长。所以选项D是正确的。

　　托福阅读推论题难度不大，关键在于理解并掌握答题方法。大家可以对这类题型进行专门训练，相信之后不会在这类题型上失分。

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