字神帝國英語天地

在托福閱讀備考的過程中，除了對單詞，長難句分析以及學術背景進行補充之外，10種托福閱讀的基本題型也是大家準備的重點。

PART1：一個本質---插入句是一句“可有可無”的話。
本題的出題位置一般處於倒數第二題的位置，並且用來出題的段落是大家應該在前面的題目中已經見到過，而之前的題目和文章既然大家理解起來沒有出現大的障礙，就說明插入進來的句子是----一句可有可無的話。這就要從兩個方面來理解了。

○何為“可有”？

既然插入句能放進原文中去，就說明它和原文是有一定關係的，所以叫“可有”，這也就意味著，插入句的部分含義是在原文中有所重複的。所以我們的重點是回到文中找那部分被重複的句意。例如：

Watt’s steam engine soon showed what it could do。 It liberated industry from dependence on running water。 The engine eliminated water in the mines by driving efficient pumps， which made possible deeper and deeper mining。 The ready availability of coal inspired William Murdoch during the 1790s to develop the first new form of nighttime illumination to be discovered in a millennium and a half。 Coal gas rivaled smoky oil lamps and flickering candles， and early in the new century， well-to-do Londoners grew accustomed to gaslight houses and even streets。 Iron manufacturers， which had starved for fuel while depending on charcoal， also benefited from ever-increasing supplies of coal： blast furnaces with steam-powered bellows turned out more iron and steel for the new machinery.Steam became the motive force of the Industrial Revolution as coal and iron ore were the raw materials。

（TPO6-Powering the Industrial Revolution）

Look at the four squares [] that indicate where the following sentence could be added to the passage。

The factories did not have to go to the streams when power could come to the factories。

Where would the sentence best fit？

在上題 中，“liberated industry from dependence on running water”和 “The factories did not have to go to the streams”句意便發生了重合。所以我們可以確定，文中第二句話的前後應該是我們可以選擇的範圍。

○何為“可無”？

這個便是經常被大家忽略的 地方。既然這句話，可以省略，那麼這個插入句究竟要符合什麼特點呢？還是以上題為例，我們發現 “liberated industry from dependence on running water”和 “The factories did not have to go to the streams”句意發生了重合，那究竟應該把插入句放在第二個還是第三個呢？這時就需要分情況討論了：

情況1：放在第二個，也就是說我們認為插入句是和下文有關係，既然要符合“可無”這個本質，所以說插入句必須是對下文概括或者引出。

情況2：放在第三個，也就是說我們認為插入句是和上文有關係，既然要符合“可無”這個本質，所以說插入句必須是對上文進一步解釋。

綜合以上兩種情況，我們會發現，插入句要麼總結引出下文，要麼進一步解釋上文。所以我們會發現，在插入題中，前一句的敘述範圍應該總比後一句大。

根據上述內容，也就引出了我們需要注意的一個非常重要的做題原則：

PART2：一個原則
在插入題中，句子的敘述順序遵循從大到小，從抽象到具體的原則。找到重複的句意後，按照大小順序安置插入句的位置。

在上題 中，“liberated industry from dependence on running water”的意思是解放了工廠對水流的依賴。“The factories did not have to go to the streams”的意思是工廠不用去往河流的位置。顯然前者說的更概括和抽象，後者更具體，所以按照從大到小的順序，應該選擇第二個。

PART3：實踐練習
Trade between the West and the settled and prosperous Chinese dynasties introduced new forms and different technologies。 One of the most far-reaching examples is the impact of the fine ninth-century AD。 Chinese porcelain wares imported into the Arab world。 So admired were these pieces that they encouraged the development of earthenware made in imitation of porcelain and instigated research into the method of their manufacture。 From the Middle East the Chinese acquired a blue pigment—a purified form of cobalt oxide unobtainable at that time in China—that contained only a low level of manganese。 Cobalt ores found in China have a high manganese content， which produces a more muted blue-gray color。 In the seventeenth century， the trading activities of the Dutch East India Company resulted in vast quantities of decorated Chinese porcelain being brought to Europe， which stimulated and influenced the work of a wide variety of wares， notably Delft。 The Chinese themselves adapted many specific vessel forms from the West， such as bottles with long spouts， and designed a range of decorative patterns especially for the European market。

（TPO10-Chinese Pottery）

Look at the four squares []that indicate where the following sentence could be added to the passage。

Foreign trade was also responsible for certain innovations in coloring。

Where could the sentence best fit？

在上題中，我們發現，插入句的“certain innovations in coloring”與原文中的“the Chinese acquired a blue pigment”句意進行了重複，顯然，插入句說的更概括，範圍更大，所以根據從大到小的原則，應該選擇第二個。