形容词和副词的比较级
1. 形容词或副词比较级的修饰语
(1) 用于形容词或副词原级比较结构前的词语有：exactly, just, nearly, almost, hardly, twice, three times 等。
exactly/just as big as
与……正好一样大
almost/nearly as wide as
与……几乎一样宽
twice as many as
是……数量的两倍
three times as long as
是……长度的三倍
(2) 修饰形容词或副词最高级的词语有：by far, the second, the third 等。
by far the finest weather
最好的天气
the third largest company
第三大公司
2. 形容词的原级或比较级表示最高级的意义
用形容词的原级或比较级也可表示最高级的意义，其结构为：
(1) 否定词语＋so/as＋形容词原级＋as。如：
No boy is so brave as Tom in his class.
在班里没有哪个男孩比汤姆更勇敢。
(2) 否定词语＋形容词比较级＋than。如：
Nothing is more exciting than to travel.
没有什么比去旅游更令人兴奋。
(3) the ＋形容词比较级＋than＋any other ＋单数名词/all the other ＋复数名词。如：
The technique is more than the other three.
这种技术比任何其他方法都有效。
This plan is nicer than the other three.
这个计划比其他三个都好。
注：大多数形容词是可分等级的，其等级性是通过比较级和最高级表现出来的。但有些形容词没有等级，不具有等级性的形容词主要是一些从名词派生的形容词。如：atomic, tidal, earthen, monthly, weekly 等。
一些表示起源的词。如：
British, English, original 等；
一些表示绝对意义的形容词。如：
dead , living , blind, lame, square, wrong 等；
一些表示时间、方位和方向的形容词。如：
daily,present, front , east, middle, central 等；
一些本身表示极限性质的形容词。如：
absolute, perfect, excellent,maximal , wonderful, unique 等。
3. 具有特殊意义的比较结构
(1) more + 形容词/名词 + than（与其说……不如说……）。如：
He is more brave than wise.
他有勇无谋。
Success in language is more a matter of application than of intelligence.
语言上的成功与其说是一个智力的问题不如说是个运用的问题。
(2) no more...than （只）。如：
It's no more than a false alarm.
那只是虚惊一场。
He is no more than a puppet.
他只是个傀儡罢了。
(3) not more than （最多）。如：
He is not more than twenty years old.
他最多有二十岁。
I have not more than five dollars with me.
我身上最多有五美元。
(4) no less than （多达……）。如：
He stayed there for no less than two months.
他在那儿呆了两个月之久。
There were no less than fifty wounded.
受伤者多达50人。
(5) not less than （多于，至少）。如：
He gave her not less than one thousand dollars.
他至少给了她一千美元。
Not less than 300 people attended the conference.
至少有三百人出席了会议。
(6) no less...than （和……一样）。如：
He is no less diligent than you.
他和你一样勤奋。
Mary is no less active than she used to be.
玛丽和从前一样活跃。
(7) not less...than （也许比……更……）。如：
He is not less rich than his brother.
他也许比他哥哥富有。
She is not less busy than you.
他也许比你更忙。
(8) not so much...as...（与其说……不如说……）。如：
She is not so much an actress as a singer.
与其说她是个演员，不 如说她是个歌手。
I do not feel so much angry as sad.
与其说我感到生气，不如说我感到伤心。
(9) as much...as... 同……一样，跟……到同一程度。如：
It is as much your responsibility as yours.
这是你们的责任，同样也是我们的责任。
I have experienced as much pain as pleasure.
我经历的痛苦和欢乐一样多。
(10) much less / still less 用于否定句之后，意思是“更不用说，更何况”。如：
She wouldn't take a drink, much less stay for dinner.
她连饮料都不愿喝一口，更别提留下吃饭了。
French is not the private property of Frenchmen, and still less is English the private property of Englishmen.
法语不是法国人的私有财产，英语就更不成其为英国人的私有财产了。