托福培训丨托福阅读句子插入题解题要点

托福培训丨托福阅读句子插入题解题要点

朗阁托福培训中心孙亚楠

句子插入题是托福阅读中的一道必考题型，题量不多，每篇文章中出现一道。句子插入题是给出一句话让我们来判断这句话应该加入1-2个段落中的四个黑方块的哪个部分，用鼠标点击所选的黑色方块即可。做这类题目的关键首先是理解待插入的句子，寻找其中的衔接词，分析这个句子的特点和其在文中的作用，然后把这个句子带入原文中检验其是否合适。下面朗阁托福培训中心的专家将就句子插入题的解题步骤做出详细的说明。

解题步骤与解题要点

阅读并分析待插入的句子，找出其中的线索词；

从第一个小黑方块前一句开始读，逐一代入进行验证；

插入句必须满足前后两条线索，先前再后。（先用前线索再看后线索）

从此步骤中可以看出掌握线索词是解答此题的关键，那么线索词都有哪些？主要有两大类，指代线索和逻辑线索。

1. 指代线索

(1). 指代词(they, it, them)必然有所指代；指代词(this, these, their, other, another, such)后面若有名词短语，则向前寻找此名词短语或其同义改写。

例题1:

Paragraph 4: Regularly flowing rivers and streams that originate within arid lands are known as "endogenous." These are generally fed by groundwater springs, and many issue from limestone massifs, such as the Atlas Mountains in Morocco. Basaltic rocks also support springs, notably at the Jabal Al-Arab on the Jordan-Syria border. ■Endogenous rivers often do not reach the sea but drain into inland basins, where the water evaporates or is lost in the ground.

■Most desert streambeds are normally dry, but they occasionally receive large flows of water and sediment.■

Paragraph 5: Deserts contain large amounts of groundwater when compared to the amounts they hold in surface stores such as lakes and rivers. ■But only a small fraction of groundwater enters the hydrological cycle—feeding the flows of streams, maintaining lake levels, and being recharged (or refilled) through surface flows and rainwater. (TPO 16 Water in the Desert)

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

These sudden floods provide important water supplies but can also be highly destructive.

Where would the sentence best fit?

解析：

1. 分析黑体句，找到其中的线索词即为these sudden floods, 则要插入的方块前面必定要出现名词短语sudden floods或是其同义改写。

2. 从第一个小黑方块前一句开始读，寻找与线索词相吻合的信息。

3. 在第三个方块前面出现了large flows of water and sediment（巨大的水流和沉积物），即为sudden floods的同义替换，所以答案应当是第三个黑方块的位置。

例题2:

Paragraph 4: One of the outer planets, Saturn, has a density of only 0.7 that of water, which means that Saturn would float in water. Variations in the composition of the planets are largely responsible for the density differences. ■The substances that make up both groups of planets are divided into three groups—gases, rocks, and ices—based on their melting points. ■The terrestrial planets are mostly rocks: dense rocky and metallic material, with minor amounts of gases. ■The Jovian planets, on the other hand, contain a large percentage of the gases hydrogen and helium, with varying amounts of ices: