summary题也是雅思阅读中较常见的一种题目。关于它的做题技巧很多，本文从介词的角度讨论summary题的做题技巧。做summary题时，在根据数字时间等关键词定位原文以后，还要根据空格前后的词汇确定答案，巧妙运用介词是一个很好的方法。
　　一、基本方法

　　如果空格前后为介词结构，回原文找介词结构。

　　二、出题形式

　　介词在原文可能是题目中的原词，也可能是题目中介词的同义结构。

　　例一（原文介词为题目中的原词），

　　……This was followed by a lull¹, but in early May the top of the mountain rose by ……People were evacuated² from around the mountain. Finally, on May 18th at……, Mount St. Helens exploded.（雅思样题）

　　原文：Then, in early May, the northern flank of the mountain bulged³, and the summit rose by 500 feet.

　　……On May 18, at 8.32 in the morning, Mount St. Helens blew its top, literally⁴.

　　对于第一空，根据early May定位原文，再根据介词by确定答案之一为500 feet；对于第二空，根据May 18定位原文，再根据介词at确定答案之一为8.32.

　　例二（原文介词为题目中介词的同义结构）

　　According to his biographer, James Boswell, Johnson's principal achievement was to bring……to the English language. As a reward for his hard work, he was granted a pension by the king. （剑5 Test 1 Reading Passage 1）

　　原文：It is the cornerstone of Standard English, an achievement which, in James Boswell's words, 'conferred stability on the language of his country'.

　　根据James Boswell、achievement等定位原文，再根据介词结构bring……to找介词结构：conferred stability on……，由于两个介词结构属于同义结构，那么题目中介词to之前的答案应为原文介词on之前的部分：stability.