1、大多數(shù)形容詞（性質(zhì)形容詞）和副詞有比較級(jí)和最高級(jí)的變化，即原級(jí)、比較級(jí)和最高級(jí)，用來表示事物 的等級(jí)差別。原級(jí)即形容詞的原形，比較級(jí)和最高級(jí)有規(guī)則變化和不規(guī)則變化兩種。1）規(guī)則變化單音節(jié)詞和少數(shù)雙音節(jié)詞，加詞尾 -er, -est來構(gòu)成比較級(jí)和最高級(jí)。構(gòu)成法原級(jí)比較級(jí)最高級(jí)一般單音節(jié)詞tall（高的）taller tallest未尾力口 -er,-est great（ 巨大的）greater greatest 以不發(fā)音的 e結(jié)尾 nice（好的）nicer nicest 的單音詞和少數(shù)large（大的）larger largest以-le結(jié)尾白“雙 able （有能力的）abler ables

2、t 音節(jié)詞只加-r,-st 以一個(gè)輔音字母big（大的）bigger biggest結(jié)尾的閉音節(jié)單hot熱的）hotter hottest音節(jié)詞，雙寫結(jié)尾的輔音字母，再加-er, -est"以輔音字母+y" easy（容易的）easier easiest 結(jié)尾的雙音節(jié)詞， busy（忙的）busier busiest 改y為i,再加-er, -est少數(shù)以-er, -ow clever（ 聰明的）cleverer cleverest 結(jié)尾的雙音節(jié)詞 narrow（窄的）narrower narrowest 未尾加-er, -est其他雙音節(jié)詞和important（重要的）多

3、音節(jié)詞，在前more important面力口 more , most most important 來構(gòu)成比較級(jí)和easily（容易地）最高級(jí)。more easilymost easily2）不規(guī)則變化原級(jí)比較級(jí)最高級(jí)good（好的）/ better bestwell（健康的）bad （壞的）/ worse worst ill（有病的）old （老的）older/elder oldest/eldest much/many（ 多的）more mostlittle（少的）less leastfar （遠(yuǎn)的）farther/further farthest/furthestas +形容詞或副詞原級(jí)

4、+ as1）在否定句或疑問句中可用 soas。He cannot run so/as fast as you.2）當(dāng)asas中間有名詞時(shí)采用以下格式。as +形容詞+ a +單數(shù)名詞as + many/much + 名詞This is as good an example as the other is.I can carry as much paper as you can.3）用表示倍數(shù)的詞或其他程度副詞做修飾語時(shí)，放在 as的前面。This room is twice as big as that one.Your room is the same size as mine.4）倍數(shù) +

5、 as + adj. + as <=> 倍數(shù) + then + ofThis bridge is three times as long as that one.This bridge is three times the length of that one.Your room is twice as large as mine.Your room is twice the size of mine.比較級(jí)形容詞或副詞+ thanYou are taller than I.They lights in your room are as bright as those in min

6、e.一、/注息：1）要避免重復(fù)使用比較級(jí)。（錯(cuò)）He is more cleverer than his brother.（卡寸）He is more clever than his brother.（卡寸）He is clever than his brother.2）要避免將主語含在比較對(duì)象中。（錯(cuò)）China is larger that any country in Asia.（） China is larger than any other countries in Asia.3）要注意對(duì)應(yīng)句型，遵循前后一致的原則。The population of Shanghai is larg

7、er than that of Beijing.It is easier to make a plan than to carry it out.4）要注意冠詞的使用，后有名詞的時(shí)候，前面才有可能有名詞。比較：Which is large, Canada or Australia?Which is the larger country, Canada or Australia?She is taller than her two sisters.She is the taller of the two sisters.可修飾比較級(jí)的詞1) a bit, a little, rather, mu

8、ch, far, by far, many, a lot, lots, a great deal, any, still, even等2)還可以用表示倍數(shù)的詞或度量名詞作修飾語。3)以上詞(除by far)外，必須置于比較級(jí)形容詞或副詞的前面。典型例題：2) - Are you feeling?Yes , I'm fine now.A. any well B. any better C. quite goodD. quite better答案：B. any可修飾比較級(jí)，quite修飾原級(jí)，well的比較級(jí)為better.3) The experiment was easier than

9、 we had expected.A. more B. much more C. muchD. more much答案：C. much可修飾比較級(jí)，因此 B , C都說得通，但easier本身已是比較級(jí)，不需 more ,因此C為 正確答案。4) If there were no examinations, we should have at school.A. the happiest time B. a more happier timeC. much happiest time D. a much happier time答案：Domany,old 和 far1)如果后接名詞時(shí)，much

10、 more +不可數(shù)名詞many more + 可數(shù)名詞復(fù)數(shù)2) old有兩種比較級(jí)和最高級(jí)形式：older/oldest 和elder/eldest 。 elder , eldest只用于兄弟姐妹的長幼關(guān)系。My elder brother is an engineer.Mary is the eldest of the three sisters.3) far有兩種比較級(jí)，farther , further.在英語中兩者都可指距離。在美語中，father表示距離，further表示進(jìn)一步。I have nothing further to say.the +最高級(jí)+比較范圍1) The S

11、ahara is the biggest desert in the world.形容詞最高級(jí)前通常必須用定冠詞the,副詞最高級(jí)前可不用。形容詞most前面沒有the,不表示最高級(jí)的含義，只表示"非常"。It is a most important problem.=It is a very important problem.注意：使用最高級(jí)要注意將主語包括在比較范圍內(nèi)。(錯(cuò))Tom is the tallest of his three brothers.() Tom is the tallest of the three brothers.2)下列詞可修飾最高級(jí)，b

12、y far, far, much, mostly, almostThis hat is nearly / almost the biggest.一、/ 注息：a. very可修飾最高級(jí)，但位置與much不同。This is the very best.This is much the best.b.序數(shù)詞通常只修飾最高級(jí)。Africa is the second largest continent.3)句型轉(zhuǎn)換：Mike is the most intelligent in his class.Mike is more intelligent than any other students i

13、n his class.4)"否定詞語+比較級(jí)"，"否定詞語+ soas”結(jié)構(gòu)表示最高級(jí)含義。Nothing is so easy as this.=Nothing is easier than this.=This is the easiest thing.和more有關(guān)的詞組1) the more the more 越就越The harder you work , the greater progress you'll make.2) more B than A 與其說 A不如說B less A than BHe is more lazy than s

14、low at his work.=He is less slow than lazy at his work.3) no more than與一樣，不比多The officials could see no more than the Emperor.no less than 與樣He is no less diligent than you.4) more than 不只是，非常 She is more than kind to us all.典型例題1) The weather in China is different from.A. in America B. one in Ameri

15、ca C. AmericaD. that in America答案：D.本題意為"中國的天氣比美國熱。”比較的是天氣而不是國家，C不能選。A沒有名詞，后句成分不全，排除。B和D中，B中的one常用來代替可數(shù)名詞，而 that可車以代替不可數(shù)或抽象名詞，所以選Do2) After the new technique was introduced, the factory produced tractors in 1988 as the year before.A. as twice many B. as many twice C. twice as many D. twice many

16、 as答案C.此句意為”這個(gè)廠1988能生產(chǎn)的拖拉機(jī)是往年的兩倍 "。表示倍數(shù)用"倍數(shù)+ as +形容詞原形+ as+比較對(duì)象”的句型。所以此句答案為CoThis ruler is three times as long as that one.形容詞和副詞比較級(jí)、最高級(jí)練習(xí)題一、選擇填空1. Which does Jimmy like, Chinese or Art?A. well B. best C. better D. much2. The Changjiang River is one ofin the world.A. the longest river B. l

17、ongest rivers C. the longest rivers D. longer rivers3. The box is than I wanted.A. bigerB. the bigerC. biggerD. the bigger4. My mooncake is nicer his.A. like B. with C. for D. than5. You are fatter than .A. he B. his C. him D. he is tall6. He jumps of the three.A. far B. further C. farthest D. furth

18、est7. My hair is longer than .A. my sister B. Kate C. my brother ' s D. Lucy s8. There are paper here .Please bring some.A. little B. less C. fewer D. a little9. The pen is than that one.A. more cheap B. cheap C. much cheaper D. quite cheaper10 .Tom speaks Chinese better than Jimmy.A. more B. ve

19、ry C. a lot of D. much11 .There are girls in Class Two than in Class Four.A. more B. nicest C. most D. best1.1 It ' s too for you to do that.A. easy B. more dangerous C. harder D. the easiest13 .Who has apples now, Jim, Lily or Lucy?A. much B. biggest C. better D. the most14 .You have more ruler

20、s than me. Butare nicer than .A. mine, yours B. mine, your C. my, yours D. my, your15 .Tingting is than Meimei, but Meimei is than Tingting.A. all, stronger B. taller, strongest C. tallest, strongD. taller, stronger16 .Mother is in my family.A. busy B. busier C. the busiest D. more busy17 .There are

21、 in the park on Sunday.A. more children B. a lot of peopleC. much men and women D. many peoples18 .-This blue sweater is too big for me .-W川 you please show me a one?A. small B. smaller C. the smallest D. smallest19 .No one is Mary in the class.A. so tallest as B. as taller as C. so high as D. so ta

22、ll as20 . This bike is than that one.A. twenty yuan dear B. twenty yuan dearer C. dear twenty yuan D. dearer twenty yuan二、用所給詞的適當(dāng)形式填空1 .Your classroom is (wide) and (bright) than ours.2 .There are (few) hours of sunlight a day in winter than in summer.3 .Which do you like (well) , maths or chemistry?4