托福阅读插入题有哪些原则 托福考试

　　情况1：放在第二个，也就是说我们认为插入句是和下文有关系，既然要符合“可无”这个本质，所以说插入句必须是对下文概括或者引出。
　　情况2：放在第三个，也就是说我们认为插入句是和上文有关系，既然要符合“可无”这个本质，所以说插入句必须是对上文进一步解释。
　　综合以上两种情况，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，前一句的叙述范围应该总比后一句大。
　　根据上述内容，也就引出了我们需要注意的一个非常重要的做题原则：
　　托福阅读句子插入题原则介绍
　　在插入题中，句子的叙述顺序遵循从大到小，从抽象到具体的原则。找到重复的句意后，按照大小顺序安置插入句的位置。
　　在上题中，“liberated industry from dependence on running water”的意思是解放了工厂对水流的依赖。“The factories did not have to go to the streams”的意思是工厂不用去往河流的位置。显然前者说得更概括和抽象，后者更具体，所以按照从大到小的顺序，应该选择第二个。
　　托福阅读句子插入题本质原则实例讲解
　　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.

　　(托福真题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”句意进行了重复，显然，插入句说得更概括，范围更大，所以根据从大到小的原则，应该选择第二个。