语法专题：形容词和副词的比较级和最高级变化规则，形容词：是用来描述和修饰名词或代词的一类词。
用以说明人或事物的性质的特征。
副词：是用来修饰动词/形容词/副词/或整个句子的一个词。
它可以表达时间，地点，方式，程度，频率，疑问等概念。
形容词和副词的比较等级分为：原级，比较级，和最高级类别构成方法原级比较级最高级类别构成方法原级比较级最高级单音节词和少数双音节词一般直接加er,estlong longer longest多音节和部分双音节词，在原词前加more,most在原级前加moremostbeautifulmorebeautifulmostbeautiful old older oldest carefulmorecarefulmostcareful short shorter shortest difficultmoredifficultmostdifficult 以不发音的e结尾时加-r,-st.nice nicer nicest expensivemoreexpensivemostexpensive late later latest quicklymorequicklymostquickly large larger largest slowlymoreslowlymostslowly辅音字母加y结尾时把y变成i，再加-er,-esteasy easier easiest carefullymorecarefullymostcarefully happy happier happiest不规则类，只能死记硬背。
good /well better best early earlier earliestbad/ill/badlyworse worst重读音节结尾并且只有一个辅音字母时双写最后的辅音字母再加加-er ,-estbig bigger biggest many/ much more mosthot hotter hottest little less leastfat fatter fattest farfarther/furtherfarthest/furthest1.原级的用法：表示甲和乙程度相当。
结构：as +原级+as例如：（1）：I am as beautiful as you .(2) : This book is as interesting as that one .表示甲不如乙。
结构：not as/so +原级+as=例如：He isn’t as tall as I2.比较级：表示两者之间的比较：结构：比较级+than例如：（1）：This apple is bigger than that one .(2):My pen is longer than hers .比较级+比较级:”越来越----“例如：He gets fatter and fatter.Our city becomes more and more beautiful .The +比较级----,the +比较级-------.”越-----，就越-----“The harder you study ,the better you are good at English.The +比较级+ of the two -----.”两者中较----的一个“He is the taller of the twins.注：形容词或副词的比较级前可以加：much a lot a little even still far3.最高级：用于三者以上的比较，表示在某一范围的某类人或物“最。
”结构：the +最高级+ in/of /among例如：（1）：Y ou are the tallest student in /of /among the class.(2): I am the youngest student in /of /among the family.one of the +最高级+名词的复数。
Beijng is one of the biggest cities in China.the +序数词+形容词最高级+名词单数The Changjiang River is the first longest river in our country.比较级+than+any other +单数名词/anyone/anything else=最高级的含义。
He is taller than any other boy in his class.=He is the tallest boy in hisclass.注：比较级+than+any other +单数名词(在同一范围内比较)比较级+than+any +单数名词（不在同一范围内比较）China is bigger than any other country in Asia.China is bigger than any country inAfrica..练习题：1.Mary's watch is than Ann's .A.much niceB. much nicerC.more nicer2..We are all very -,but Jane is than us .A.busy,busier,B.busier,busyC.busier,busier3.Kate speaks English very .A.wellB.betterC.good4.Would you like more rice?A.muchB.manyC.few5..Look at that shirt !That'aA.myB.mineC. I6..The elephant is much than the bear..A. HeavyB.heavierC.heaviest7...Which is slower,a snai .a snake?A.orB.andC.with8.Who has books ,Mike or Kate?A.manyB.muchC.more9.Tom runs . of all the students.A.fastB.the fastest Cfaster10.The yard is as . as mine .rgerrgergest11.He gets up han his sister.But he leaes home for school .A.early ,lateB.earlier,lateC.earlier,later than her12.Which do you like ,the city ,the town or the country?A.wellB.bestC.better13.We're both 150cm tall.He is me .A.as tall as so high as . C.so tall as14.John is than Betty.Tim is the of them .A.older,oldB.older,oldestC.old ,oldest.15.Which is the .river in your country?A.longestB.longC.longer16.Harbin is much than Beijing in winter.A.coldB.colderC.coldest1.写出下列各词的比较级和最高级形式1. short ________ __________2.clean_________ ____________3. nice ___________ __________4. fine__________ ____________5. big ________ ____________6. hot___________ ______________7. early _________ _________8.happy __________ ___________9. much __________ ____________ 10. little_________ ____________ 11.beautiful __________ ____________ 12.carefully _________ ___________ 13.quickly __________ ____________ 14.warmly ___________ __________ 2.写出下例形容词的副词形式1. slow ________2.wide ___________3.free __________4. happy_________5.easy___________6.beautiful_________7.angry__________8. quick___________9.true____________ 3.典例解析1 .Bob never does his homework _________ Mary. He makes lots of mistakes.A. so careful asB. as carefully asC. carefully asD. as careful as2. I feel __________ better than yesterday.A. moreB. veryC. theD. far3. China has a larger population than ________ in the world.A. all the countriesB. every countryC. any countryD. any other country4. Now air in our town is ________ than it used to be. Something must be done to it.A. very goodB. much betterC. rather badD. even worse5. ________, the worse I seem to be.A. The more medicine I takeB. More medicine I takeC. When I take much more medicineD. Taking more medicine6. The sick boy is getting _________ day by day.A. worseB. badC. badlyD. Worst习题针对训练：( ) 1. Lee came to Beijing in 2005. He has been here than you. (09 北京)A. longB. longerC. longestD. the longest( ) 2. Thanks to the new inventions, our lives are much than before.A. convenientB. more convenientC. most convenientD. the most convenient (09 上海)( ) 3. We are happy that our country has developed these years than before.A. quicklyB. less quicklyC. more quicklyD. most quickly (09 重庆)( ) 4. ---Can you understand what I meant? ---Sorry, I can follow you.A. alwaysB. almostC. nearlyD. hardly (09 江苏宿迁)( ) 5. I don’t know what her interests are, because we talk about work when we meet.(09 天津)A. luckilyB. safelyC. mainlyD. clearly( ) 6. ---What do you think of the TV sitcom Home With Kids? (08 福州) ---It’s very . Many children like watching it.A. boringB. funnyC. surprisingD. terrible( ) 7. ---I have three English dictionaries. (07 陕西)---I have nine. I have three times you.A. as much asB. as many asC. as little asD. less than( ) 8. ---Look! How the boys are!---Y es. They won the game this afternoon. (08 陕西)A. excitingB. excitementC. exciteD. excited( ) 9. engineers and workers are helping to rebuild the damage city.A. ManyB. MuchC. A littleD. A lot (08 上海)( ) 10. The snow storm which hit this area last night was in recent years.A. heavyB. heavierC. heaviestD. the heaviest( ) 11. Ann’s house is ten miles away from the school and nobody else in her class lives . (07 南通)A. farB. fartherC. farthestD. the furthest( ) 12. Will you please speak ? I’m afraid I can’t follow you. (07 威海)A. loudlyB. pleasantlyC. slowlyD. easily( ) 13. ---Hi, Andrew,. How can you improve your English so much? (07 黄冈)---Oh, nothing difficult. The you work at it, the progress you will make.A. harder, moreB. more hardly, moreC. hardier, greaterD. harder, great( ) 14. Mr. Smith lives , but he doesn’t feel . (09 大港)A. alone, aloneB. alone, lonelyC. lonely, aloneD. lonely, lonely( ) 15. ---I didn’t know you take a bus to school.---Oh, I take a bus, but it is snowing today. (09 南昌)A. hardlyB. neverC. sometimesD. usually( ) 16. ---Hello! Golden Sun Hotel. Can I help you? (09 安徽) ---Do you have a room for this weekend?A. availableB. usefulC. emptyD. possible( ) 17. Paper-making is of ancient China. (09 福州)A. one of greatest inventorB. one of the greatest inventorsC. one of greater inventionD. one of the greatest inventions( ) 18. This year the villagers have produced rice they did two years ago.(09 天津)A. less, thanB. as less, asC. fewer, thanD. as few, as( ) 19. ---How often do you go to a concert?--- ever. I’m interested in that at all. (09 山西)A. UsuallyB. HardlyC. Almost( ) 20. The match was really fantastic, when Smith scored in the last minute.A. probablyB. exactlyC. especiallyD. mostly (09 河南)( ) 21. ---How long will Philip stay here？---Two weeks till he leaves.A. manyB. muchC. moreD. most( ) 22. We believe that we can hold the Beijing 2008 Olympic Games .A. successfulB. successfullyC. successD. succeed (08 南宁)( ) 23. Daniel is a careful driver, but he drives of my friends. (08 苏州)A. more carefullyB. the most carefullyC. less carefullyD. the least carefully( ) 24. Please read every sentence . The more you are, the fewer mistakes you’ll make. (07 哈尔滨)A. carefully, carefullyB. careful, carefulC. carefully, careful( ) 25. Things made by hand are usually more expensive than produced in factories.(09 宁夏)A. theseB. thisC. thatD. those。