1.同级比较

【真题回放】The drive to_____is deeply rooted in humans, much the same as the basic drives for food or shelter, says Christopher Hsee of the University of Chicago. Curiosity is often considered a good instinct-it can lead to new scientific advances, for instance-but sometimes such inquiry can backfire.

[A]disagree

[B]forgive

[C]forget

[D]discover

解析　本句意为“人们探索的动力是根深蒂固的，这与寻找庇护所的动力是一样的”。前后文已提到文章研究的是好奇心，是“求知的需求”，所以这里选择与此意义相近的词汇。disagree“不同意，反对”；forgive“原谅”；forget“忘记”；discover“发现，发觉”。[D]选项最合适。

译文　芝加哥大学的克里斯托弗·奚说，探索的动力深深根植于人类，就像寻找食物或住所的基本动力一样。

2.the more……the more……句型表示比较

这个句型表示同时增加或减少。从结构上看，这个句型前半部分是从句，后半部分是主句，即“the+比较级（从句）, the+比较级（主句）”。比较级部分都在各自主从句中充当一定的成分。

【例1】The longer the war lasts, the more the people there will suffer.

译文　战争持续越久，那里的人们受难就越多。

【例2】The less he worried, the better he worked.

译文　他越不烦恼，工作就干得越好。

3.表示达到最高程度的结构

4.表示“倍数”比较的三种句型

（1）A+倍数+as+形容词或副词的原级+as+B.表示“A是B的多少倍”。

【例1】An ordinary subway train, approaching the station, can be twice as loud as the loudest jet.

译文　普通的地铁进站时发出的声音会是噪声最大的喷气机的两倍。

【例2】This red box is half as large as the blue one.(www.daowen.com)

译文　这个红盒子是那个蓝盒子的一半大。

（2）名词结构+A……倍数+名词+of+B.表示“A是B的多少倍”。

【例1】The age of my grandpa is four times the age of mine.

译文　我爷爷的年龄是我的四倍。

【例2】The bridge is three times the length of that one.

译文　这座桥的长度是那座桥的三倍。

（3）A……倍数+比较级+than+B.表示“A比B大（小、长……）多少倍”。

【例1】This hole is three times deeper than that one.

译文　这个坑比那个坑深三倍。

【例2】This hole is four times as deep as that one./This hole is four times the depth of that one.

译文　这个坑是那个坑的四倍深。

【真题回放】Dr. Simonsohn found if the score of the previous candidate in a daily series of interviewees was 0.75 points or more higher than that of the one before that, then the score for the next applicant would_____by an average of 0.075points. This might sound small, but to undo the effects of such a decrease a candidate would need 30 more GMAT points than would otherwise have been necessary.

[A]jump

[B]float

[C]drop

[D]fluctuate

解析　本句包含“more+比较级”结构。to……the effects of such a decrease，由此可以判断接下来那个应聘者的分数是出现了下降，故直击正确选项C。

译文　西蒙松博士发现，在一天中，如果之前的申请人分数比再前一位高出0.75分或更多，那么下一位申请人的得分平均会降低0.075分。