1、1比较级与最高级一、形容词的比较级和最高级变化形式规则如下构 成 法 原 级 比 较 级 最 高 级 一般单音节词末尾加er 和 est strong stronger strongest 单音节词如果以e 结尾，只加r 和st strange stranger strangest 闭音节单音节词如末尾只有 一个辅音字母，须先双写这个辅音字母，再加er和est sadbighot sadderbiggerhotter saddestbiggesthottest 少数以er( 或ure),ow 结尾的双音节词， 末尾加er 和est“以辅音字母+y“ 结尾的双音节词，改 y 为 i，再加 -er
2、，-est clevernarrowbusycleverernarrowerbusiercleverestnarrowestbusiest 其他双音节和多音节词都在前面加单词 more 和 most different moredifferent mostdifferent 2) 不规则变化原级 比较级 最高级 good(好的)/ better bestwell(健康的) bad (坏的)/ worse worstill(有病的) old (老的) older/elder oldest/eldest much/many(多的) more most little(少的) less least f
3、ew fewer fewest far 远的) farther/further farthest/furthest 距离 程度二、构成比较级形容词或副词 + than You are taller than I.1）避免重复使用比较级。(错) He is more cleverer than his brother.(对) He is cleverer than his brother.2）要注意对应句型，遵循前后一致的原则。A. The population of Shanghai is larger than that of Beijing.B. It is easier to make
4、a plan than to carry it out.2比较级与最高级To make a plan is easier than to carry it out.C.(错) China is larger than any country in Asia.(对) China is larger than any other countries in Asia.误He is taller than any boy in his class.正He is taller than any other boy in his class.比较级 + than any other +单数名词 这是用比较
5、级形式表达最高级的意思。3）the + 最高级 + 比较范围 形容词最高级前通常必须用定冠词 the，副词最高级前可不用。The Sahara is the biggest desert in the world.Mike is the most intelligent in his class.in+范围、场所, of+复数 在之中的” ；“在中My father is the tallest in my family.one of the +最高级，后面要加上名词的复数，即为 one of the +最高级+复数名词Hangzhou is one of the most beautiful
6、 cities in China.杭州是中国最美丽的城市之。4)as/so + 形容词或副词原级 + as 例：The lights in your room are as bright as those in mine.He can run as fast as you.He cannot run so/as fast as you.5）“The +比较级，the+比较级“表示“越，就越“The busier he is, the happier he feels.他越忙就越高兴。6）比较级+and+比较级，表示“越越”colder and colder7）修饰比较级的词a) 只用于修饰比较
7、级的：much;still;evenb) 既可以修饰比较级又可以修饰原级的：a little; a bit; rather 等c) even 修饰形容词,副词的比较级,以加强比较的语气和程度.d) 修饰形容词,副词比较级的常用修饰词有:no,a little,a bit,much,even,still,a lot,a great deal,far,by far,rather,any 等.在这些词中,其中 no 在修饰比较级时,在意义上否定两者,表示前者在某方面不比强少.He is no richer than Peter.=He is as poor as Peter.表示前者比后者强一点时,
8、通常采用 a little,a bit 等.The room is a bit larger than that one.表示前者比后者强很多时,通常采用 much,even,still 等.(still 修饰形容词,副词的比较级时,可以位于比较级之前或之后.)He works still harder than ever.=He works harder still than ever.表示前者在某方面远远地超过对方时,通常采用 far,by far,a lot,a great deal 等.Matters are a lot better than ever before.e) 在否定句,
9、疑问句或条件状语从句中,修饰形容词,副词的比较级,只能用 any 来修饰.He cant jump any higher.3比较级与最高级If you jump any higher, I will give you a award. 8）倍数表达法1. “A+be 动词/谓语动词+倍数+形容词/副词比较级+than+B” ，表示“A 比 B 大（长、高、宽等）多少倍”例如： This hall is five times bigger than our classroom. The car runs twice faster than that truck.2. “A+be 动词/谓语动词+
10、倍数+as+形容词/副词原级+as+B” ，表示“A 正好是 B 的多少倍” 。例如： This table is three times as long as that one. The plane flew ten times as high as the kite.3. “ times + the + 名词（如： size， height， weight， length， width, age 等） of ” 例如： This street is four times the length of that street.4. . times as many/much+名词+as+被比对象
11、” 。例如：There is four times as much water in this pot as in that one. There are six times as many students as we expected.。5. “ . times+more+名词（可数或不可数）+than+被比对象” 。例如：There are five times more books in our library than in yours. We have produced twice more grain this year than we did last year.6.“ . t
12、imes+over+被比对象” 。例如：The grain output in that village is twice over that of 2002.7. “ . times+that+of+被比对象 ” 。例如：In this workshop, the output of July was 4.5 times that of January.8. “.times+compared with+被比对象” 。例如：The number of the students in our school has increased 4 times compared with that in 1980.9. “.times+what+从句” 。例如：The production is now three times what it was ten years ago.10.分数/百分数（one-third /30%）+形容词比较级 + than 例如：They produced 53 per cent more steel in 1925 than they did in 1914.
