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托福阅读中的句子插入题是比拟考究技巧的题型。理解该题型考点的同窗可以很讯速地找到正确的插入位置，而不分明解题技巧的同窗可能会在多个位置中重复犹疑并做出错误选择。做好插入题需求理解其实质和准绳，来看下面的详细解说。

托福阅读句子插入题实质：插入句“可有可无”

本题的出题位置大家比拟分明，普通处于倒数第二题的位置，并且用来出题的段落是大家应该在前面的标题中曾经见到过，而之前的标题和文章既然大家了解起来没有呈现大的障碍，就阐明插入进来的句子是一句可有可无的话。这就要从两个方面来了解了。

何为“可有”?

既然插入句能放进原文中去，就阐明它和原文是有一定关系的，所以叫“可有”，这也就意味着，插入句的局部含义是在原文中有所反复的。所以我们的重点是回到文中找那局部被反复的句意。例如：

█Watt's steam engine soon showed what it could do. █It liberated industry fromdependence on running water. █The engine eliminated water in the mines by drivingefficient pumps, which m-ade possible deeper and deeper mining. █The ready availability ofcoal inspired William Murdoch during the 1790s to develop the first new form of nighttimeillumination to be discovered in a mill-ennium and a half. Coal gas rivaled smoky oil lamps andflickering candles, a-nd early in the new century, well-to-do Londoners grew accustomed togaslit houses and even streets. Iron manufacturers, which had starved for fuel while dependingon charcoal, also benefited from ever-increasing supplies of coal: b-last furnaces with steam-powered bellows turned out more iron and steel for the new machinery. Steam became themotive force of the Industrial Revolu-tion as coal and iron ore were the raw materials.

(托福官方6-Powering the Industrial Revolution)

Look at the four squares [█] that indicate where the following sentence coul-d be added tothe passage.

The factories did not have to go to the streams when power could come to th-e factories.

Where would the sentence best fit?

在上题中，“liberated industry from dependence on running water”和 “The factories did not have to go to the streams”句意便发作了重合。所以我们能够肯定，文中第二句话的前后应该是我们能够选择的范围。

何为“可无”?

这个便是经常被大家疏忽的中央。既然这句话，能够省略，那么这个插入句终究要契合什么特性呢?还是以上题为例，我们发现 “liberated industry from dependence on running water”和 “The factories didnot have to go to the streams”句意发作了重合，那终究应该把插入句放在第二个█还是第三个█呢?这时就需求分状况讨论了：

状况1：放在第二个█，也就是说我们以为插入句是和下文有关系，既然要契合“可无”这个实质，所以说插入句必需是对下文概括或者引出。

状况2：放在第三个█，也就是说我们以为插入句是和上文有关系，既然要契合“可无”这个实质，所以说插入句必需是对上文进一步解释。

综合以上两种状况，我们会发现，插入句要么总结引出下文，要么进一步解释上文。所以我们会发现，在插入题中，前一句的叙说范围应该总比后一句大。

依据上述内容，也就引出了我们需求留意的一个十分重要的做题准绳：

托福阅读句子插入题准绳引见

在插入题中，句子的叙说次第遵照从大到小，从笼统到详细的准绳。找到反复的句意后，依照大小次第安顿插入句的位置。

在上题中，“liberated industry from dependence on running water”的意义是解放了工厂对水流的依赖。 “The factories did not have to go to the streams”的意义是工厂不用去往河流的位置。显然前者说得更概括和笼统，后者更详细，所以依照从大到小的次第，应该选择第二个█。

托福阅读句子插入题实质准绳实例解说

Trade between the West and the settled and prosperous Chinese dynasties introduced newforms and different technologies. One of the most far-reaching e-xamples is the impact of thefine ninth-century AD. Chinese porcelain ware-s imported into the Arab world. █So admiredwere these pieces that they encouraged the development of earthenware made in imitation ofporcelain and instigated research into the meth-od of their manufacture. █From the MiddleEast the Chinese acquired a blue pigment—a purified form of cobalt oxide unobtainable atthat time in China—that contained only a low l-evel of manganese. Cobalt ores found in Chinahave a high manganese conte-nt, which produces a more muted blue-gray color. █In theseventeenth century, the trading activities of the Dutch East India Com-pany resulted in vastquantities of decorated Chinese porcelain being brough-t to Europe, which stimulated andinfluenced the work of a wide variety of wares, notably Delft. █The Chinese themselvesadapted many specific vessel forms from the West, such as bottles with long spouts, anddesigned a range of decorative pattern-s especially for the European market.

(托福官方10-Chinese Pottery)

Look at the four squares [█]that indicate where the following sentence could be added tothe passage.

Foreign trade was also responsible for certain innovations in coloring.

Where could the sentence best fit?

在上题中，我们发现，插入句的“certain innovations in coloring”与原文中的“the Chinese acquired a blue pigment”句意停止了反复，显然，插入句说得更概括，范围更大，所以依据从大到小的准绳，应该选择第二个█。

以上就是托福阅读句子插入题的实质和准绳引见，解答这一题型有艰难的同窗赶紧学起来。

小编找到的是作者的一些见解，希望可以为考生们寻找到最好得分方式。这些资料大家可以作为参考吸收到自己的经验谈之中，适合自己的方法就是最好的方法，希望对大家有所帮助。最后，辛达代报希望广大考生们在备考过程中提升自己的语言水平，取得更好的成绩。

有需要代报考位的同学们，可以直接联系我们，辛达托福代报竭诚为您服务。(*^__^*) 嘻嘻…