比较结构的语法，比较结构的标志就是句子中有比较级的词语或结构，比如more...than...
(一)比较结构原则：
(1)比较对象要一致。即如果比较人的长相，那么比较的对象应该都是人的长相。
(2)语法结构要一致。即如果than前面是to do形式，那么than后面也应是to do形式。
(二)常见的比较结构：
like
in contrast to/with
unlike
more than
less than
faster than
different from
as(adj.)as
as much as
as little as
as fast as
the same as
superior to
inferior to
《剑桥雅思真题7》Test 1 Passage 2
Yet there is a dark side to this picture: despite our progress, half of the world's population still suffers, with water services inferior to those available to the ancient Greeks and Romans.
然而，这幅图有阴暗的一面：尽管我们取得了进步，但世界上有一半的人口仍在遭受着痛苦，水的服务不及古希腊和古罗马人。
《剑桥雅思真题8》Test 3 Passage 2
What we appreciate, enjoy or marvel at in the works of genius or the achievements of prodigies are the manifestations of skills or abilities which are similar to, but so much superior to, our own.
我们欣赏、珍惜或惊奇于天才的作品或天才的成就，是技能或能力的表现，与我们自己的能力相似，但却比我们自己的要优越得多。
《剑桥雅思真题8》Test 3 Passage 2
The skills of ordinary individuals are in essence the same as the skills of prodigies.
普通个人的技能，本质上和天才的技能是一样的。
《剑桥雅思真题9》Test 2 Passage 3
Their brains do not fall into efficiency pitfalls as much as the average person's brain.
他们的大脑不会像一般人的大脑一样陷入效率陷阱。
《剑桥雅思真题8》Test 3 Passage 2
some races are more intelligent in musical or mathematical thanothers.
有些种族在音乐或数学方面比其他种族更聪明。
《剑桥雅思真题8》Test 1 Passage 1
Unlike the original form used in early pendulum clocks, the anchor escapement permitted the pendulum to travel in a very small arc.
与早期摆钟所用的原始形式不同，“锚”式的擒纵装置允许钟摆以非常小的弧线运动。
《剑桥雅思真题9》Test 2 Passage 1
A donkey costs less than a bicycle.
驴比自行车花费少。
