如何快准狠完成托福阅读句子插入题？

句子插入题顾名思义就是给一句新的句子，要求考生们把这个句子插入到相应的位置，指定位置是文章中四个黑色方块的地方。这些方块分布在句首或句末，四个方框有时都出现在一个段落里，有时分布在一段的末尾和下一段的开头。

考题形式如下：

Lookat the four squares [■] that indicate where the followingsentence could be added to the passage.[…………………]Wherewould the sentence best fit?

同学们要做的是点击其中的一个方块并将这个句子插入文章。句子插入题考查的内容是句子与句子间的逻辑关系，即所插入句子必须和前后句子在逻辑关系上保持一致。

做句子插入题时的步骤

1）仔细阅读插入句，准确理解句意

2）根据句内信息词，推断插入位置前或后可能出现的内容

3）寻找复合推测的位置

4）将句子放入，讲插入句及前后两句话连起来通读一遍，检验是否流畅逻辑严谨、语意流畅

如何根据信息词推测

句子插入题中出现的信息词分两类：1. 代词；2. 逻辑词

1）指代词

这里的指代词指的是：1. 代词；2. 定冠词the+名词所组成词。

代词（Pronoun）是代替名词或一句话的一种词类。the+名词的结构，在文中有时会起指代前文的作用。大部分出现指代词的句子插入题非常简单。

当题目的句子中出现指代词，插入位置前面必然会提到其指代的内容。这个时候，若我们能根据代词的种类、指代词的词义和插入句的句意推断出指代的具体内容，那么只需要将插入句放入出现该内容的句子之后的位置，即可满足指代关系，得到答案。

如果四个位置中，只有一个位置前面出现句中指代词的指代对象，则这个位置就是我们的正确答案。

例题：

Paragraph3：At times, it is actually possible to watchthe effects of natural selection in host-parasite relationships. For example,Australia during the 1940 s was overrun by hundreds of millions of Europeanrabbits. ■ The rabbits destroyed huge expanses ofAustralia and threatened the sheep and cattle industries. ■ In 1950, myxoma virus, a parasite that affects rabbits, wasdeliberately introduced into Australia to control the rabbit population. ■ Spread rapidly by mosquitoes, the virus devastated the rabbitpopulation. ■ The virus was less deadly to theoffspring of surviving rabbits, however, and it caused less and less harm overthe years. Apparently, genotypes (the genetic make-up of an organism) in the rabbitpopulation were selected that were better able to resist the parasite.Meanwhile, the deadliest strains of the virus perished with their hosts asnatural selection favored strains that could infect hosts but not kill them.Thus, natural selection stabilized this host-parasite relationship.13. Look atthe four squares [■] that indicate where the following sentence could be added to thepassage.This massive population began a century earlier as a mere twelve pairsof imported rabbits that reproduced quickly and developed into a majorproblem.Where would the sentence best fit?

句中出现代词“this massive population”，这巨大的群体数量来自于“twelve pairs of imported rabbits”，则插入位置前面必然提到巨大的兔群数量。

只有第一个位置前面的句子提到“hundreds of millions ofEuropean rabbits”，可以构成指代的对象。所以A就是妥妥的正确答案。

※ 如果四个位置中有多个位置的前面存在着“可能成为”指代词的指代对象的信息，那么往往只有其中一个内容能够符合指代词的“特性”。

例题：

Paragraph 1：Whilesome European countries, such as England and Germany, began to industrialize inthe eighteenth century, the Netherlands and the Scandinavian countries ofDenmark, Norway, and Sweden developed later. ■ All fourof these countries lagged considerably behind in the early nineteenth century. ■ However, they industrialized rapidly in the second half of thecentury, especially in the last two or three decades. ■In view of their later start and their lack of coal—undoubtedlythe main reason they were not among the early industrializers—it is important to understand the sources of their success. ■

13. Look at the four squares [■] that indicate wherethe following sentence be added to passage.

During this period, Sweden had the highest rate of growth of output per capitaof any country in Europe, and Denmark was second.

Where would the sentence best fit?

句中出现代词“this period”，插入位置前面必然提到某一个时期。同时，我们还要注意，句子还提到，这个时期里Sweden和Denmark经济发展特别好。

原文前三个位置之前的句子px;" pingfang="" sans="" micro="">逻辑词仅仅是为了简(zhuang)洁(bi)而起的一个名字，指的是能够表示句间逻辑关系的那些词，如however、but、therefore、also、then等等。

出现这些逻辑词的时候，代表着插入句的句意和其前句或后句在信息上存在着某种逻辑关系。根据找到的逻辑关系，结合插入句的句意，可以大致推测一下前文或后文的句意，以此作为寻找正确答案的指向性信息。

3）信息的重复

还有一些插入句，既不包含指代词，也不包含逻辑词。但这类插入句的难度其实并不大。和所有插入句相同，不包含信息词的插入句也和正确位置的前句或后句存在语义上的联系，这个联系就是信息的重复。当我们找到原文某一个句子，所述内容与插入句内容相关时，再来判断应该把插入句放在这个句子的前面还是后面，就能得到答案了。

记得带进去检验

检验指的是前文做题步骤中的第四步：将句子放入，讲插入句及前后两句话连起来通读一遍，检验是否流畅逻辑严谨、语意流畅。

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