托福阅读解题技巧-句子插入题（一）
托福阅读不同于传统阅读，其中包含了”句子插入题”这类特殊题型，这也是托福阅读中相对难得分的题型。

此类题型中，题干中会给出一个新的句子，然后会在原文段落中给出四个黑框，考察新句子在文章中最合适的位置。

针对于此类题型的解答，有很多实用的方法，今天我们要介绍的是在剩余时间不多的情况下，最简单最便捷的解决方法-语义指代匹配法。

在上下句的关联中，代词是最为紧密的一类词。

当作者再次谈及上句相关话题时，为了避免重复，遵循语言学的最简单化原理，作者会用代词指代上文内容，常见指示代词this, that, these, those, 人称代词they, she, he, 或it ，还有their, such, another等。

对于此类题型的具体解题步骤如下：
①确认指代对象：根据指代词找到其所指代的对象；
②定位指代对象：通过浏览扫描段落信息，确定指代对象位置；
③代入验证：把插入句代入含有指代对象所在句的后面进行验证即可。

接下来，我们通过具体实例来论证使用语义指代匹配法。

案例：
Paragraph 1: Before 1815 manufacturing in the United States had been done in homes or shops by skilled artisans.■As master craft workers, they imparted the knowledge of their trades to apprentices and journeymen. ■In addition, women often worked in their homes part-time, making finished articles from raw material supplied by merchant capitalists. ■After 1815 this older form of manufacturing began to give way to factories with machinery tended by unskilled or semiskilled laborers. ■Cheap transportation networks, the rise of cities, and the availability of capital and credit all stimulated the shift to factory production.
11. Look at the four squares[■]that indicate where the following sentence can be added to the passage.
This new form of manufacturing depended on the movement of goods to distant locations and a centralized source of laborers.
Where would the sentence best fit?
分析：本题待插入句中含有明显的指代词This，并有伴随有名词词组new form of manufacturing，这样可以推断出This指代的内容则为”new form of manufacturing”。

由此，我们可以把”form of manufacturing”作为本句的关键词，回到原文中通过关键词扫描浏览发现只有第三个黑框后的”After 1815 this older form of manufacturing began to give way to factories with machinery tended by unskilled or semiskilled laborers.”含有”form of manufacturing”的内容，把待插入句代入到本句之后，即第四个黑框中进行验证，文章内容成立，所以，本题正确位置即为第四个黑框。