比较结构:

考点例析：

例1：Elsewhere,
rice experts in the philippines are producing a plant with few _____
stems and more seeds.

解析：and要连接两个对称结构，此处应该为比较级：fewer stems and more seeds。

例2：Their fields yield twice as much corn this year than they did _______
last year after adopting the advanced technology.

解析：此处是as…as…结构，故应该把than 改为as。
拓展：在比较结构中，一般用than来连接，但有些词用to如：superior/inferior/senior/junior.或者as…as

例3：The climate in the coastal cities is much warmer than in the _______
interior cities．

解析：句中用于比较的两个部分是气候而不是地区。故应在在than与 in之间应加指示代词that。

巩固与发展:

1.Microwave ovens are generally more costlier than common ovens. _______

2. It is possible that some old paintings were once bright and more _______
colorful than they are now.

3. There are few electronic applications likely to raise fears regarding _______
future employment opportunities than robots.

4. Most wine from Switzerland is more inferior to wine from France. ______

5. By opening vast areas of un occupied land for residential expansion,
the ominibuses, house railways, commuter trains, and electric trolleys
pulled settled regions outward two to four times as distant from city
centers than they were in the premodern area. _________

综合训练:

Every human being, no matter what he is doing, give off body heat. 1.______
The usual problem is how to dispose it. But the designers of the Johnstown 2.______
campus of the University of Pittsburgh set themselves an opposite 3.______
problem ---how to collect body heat. They have designed a collection
system which uses not only body heat, but the heat gives off by 4.______
such object as light bulbs and refrigerators as well that no 5._______
convention fuel is needed to make the campus’s six buildings comfortable. 6.______
Some parts of the most modern buildings ---theatres and offices as well as 7.______
classrooms---are more than adequately heat by people and sometimes must be 8._____
air-conditioned even in winter. The technique of saving heat and redistributing it
are called “heat recovery”. A few modern buildings recover heat, but the University’s 9.___
system is the first to recover heat from some buildings and reuse it in others.
Along the way, Pitt has learned that the harder a student studies, the less heat 10.______
his body gives off. Male students emit more heat than female students, and the
larger a student, the more heat he produces.

参考答案及解析:

巩固与拓展

1、costlier -> costly
此句costly是形容词，意思是“昂贵的”。它的比较级形式是more costly。costlier是错误的形式，须改成costly。

2. bright -> brighter

3. likely前加more
此句的意思是：很少有电子应用软件能够像机器人那样引起人们对未来就业机会的担忧。
此处是 more likely … than 比较结构

4. more -> /

有些含有比较意义的形容词，不能与more, er, than连用的，如：preferable to,superior to=better than, inferior to劣于，prior to=before, second to仅次于, inferior to等。

5. than -> as

综合练习

1. give -> gives
这句话的主语是Every human being，是单数，故谓语动词也要用单数形式。

2. dispose后加of
Dispose of是固定搭配，意为“处理”。

3. an -> the

4. gives -> given
此处的given off是作heat的定语。

5. object -> objects

6. convention -> onventional
Convention是名词，要用其形容词形式修饰fuel，意为“传统燃料”。

7. the -> /
此处不是比较级的最高形式，此处的most意为“大多数”，不需要加任何冠词。

8. heat -> heated

9. are -> is
这句话的主语是the technique，of saving heat and redistributing it是作它的定语，所以位于要用单数形式。

10. less -> more

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