大多数形容词（性质形容词）和副词有比较级和最高级的变化，即原级、比较级和最高级，用来表示事物的等级差别。
原级即形容词的原形，比较级和最高级有规则变化和不规则变化两种。
1) 规则变化单音节词和少数双音节词，加词尾-er，-est来构成比较级和最高级。
构成法原级比较级最高级一般单音节词tall(高的) taller tallest未尾加-er,-est great(巨大的) greater greatest以不发音的e结尾nice(好的) nicer nicest的单音词和少数large(大的) larger largest以- le结尾的双able（有能力的) abler ablest音节词只加-r,-st以一个辅音字母big(大的) bigger biggest结尾的闭音节单hot热的) hotter hottest音节词，双写结尾的辅音字母，再加-er，-est"以辅音字母+y" easy(容易的) easier easiest结尾的双音节词，busy(忙的) busier busiest改y为i，再加-er，-est少数以-er，-ow clever(聪明的) cleverer cleverest结尾的双音节词narrow(窄的) narrower narrowest未尾加-er，-est其他双音节词和important(重要的)多音节词，在前more important面加more，most important来构成比较级和easily(容易地)最高级。
more easilymost easily2) 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/eldestmuch/many(多的) more mostlittle(少的) less leastfar (远的) farther/further farthest/furthestas + 形容词或副词原级+ as比较级形容词或副词+ thanYou are taller than I.They lights in your room are as bright as those in mine.可修饰比较级的词1）a bit, a little, rather, much, far, a lot, lots, any, still, even等3) far 有两种比较级，farther，further. 在英语中两者都可指距离。
在美语中，father 表示距离，further表示进一步。
I have nothing further to say.the + 最高级+ 比较范围b. 序数词通常只修饰最高级。
Africa is the second largest continent.和more有关的词组1) the more… the more… 越……就越……形容词和副词比较级、最高级练习题一、选择填空1. Which does Jimmy like _____ , Chinese or Art?A. wellB. bestC. betterD. much2. The Changjiang River is one of _____ in the world.A. the longest riverB. longest riversC. the longest riversD. longer rivers3. The box is _________than I wanted.A. bigerB. the bigerC. biggerD. the bigger4. My mooncake is nicer _____ his.A. likeB. withC. forD. than5. You are fatter than _____ .A. heB. hisC. himD. he is tall6. He jumps _____ of the three.A. farB. furtherC. farthestD. furthest7. My hair is longer than _____ .A. my sisterB. KateC. my brotherD. Lucy’s8. There are _____ paper here .Please bring some.A. littleB. lessC. fewerD. a little9. The pen is _____ than that one.A. more cheapB. cheapC. much cheaperD. quite cheaper10.Tom speaks Chinese _____ better than Jimmy.A. moreB. veryC. a lot ofD. much11.There are _____ girls in Class Two than in Class Four.A. moreB. nicestC. mostD. best12.It’s too _____for you to do that.A. easyB. more dangerousC. harderD. the easiest13.Who has _____ apples now, Jim, Lily or Lucy?A. muchB. biggestC. betterD. the most14.You have more rulers than me. But _____ are nicer than _____ .A. mine, yoursB. mine, yourC. my, yoursD. my, your15.Tingting is _____ than Meimei, but Meimei is _____ than Tingting.A. all, strongerB. taller, strongestC. tallest, strongD. taller, stronger16.Mother is _____ in my family.A. busyB. busierC. the busiestD. more busy17.There are _____ in the park on Sunday.A. more childrensB. a lot of peopleC. much men and womenD. many peoples18.-This blue sweater is too big for me .-Will you please show me a _____ one?A. smallB. smallerC. the smallestD. smallest19.No one is _____ Mary in the class.A. so tallest asB. as taller asC. so high asD. so tall as20. This bike is _____ than that one.A. twenty yuan dearB. twenty yuan dearerC. dear twenty yuanD. dearer twenty yuan二、用所给词的适当形式填空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.This is the _____ (good) film I have ever seen.5.Africa is the second _____ (large) continent.6.What he said made his mother much _____ (angry) .7.I’m not as_____ (careful) as he.8.We’ve got as_____ (many) books as we need.9.Pratice as _____ (much) as you can.10.They have done _____ (much) work with _____ (little) money.11.You’re the_____ (kind) person I’ve ever met.12.He is _____ (young) than his two sisters.13.The _____ (old) I get, the _____ (strong) I seem to feel.14.The weather is getting _____ (warm) and _____ (warm) .15.Summer is _____ (hot) season of the year.[参考答案]CCDDA CDBCD AADAD CBBDB[参考答案]1. wider, brighter2. fewer3. better4. best5. largest6. angry7. careful8. many9. much 10. more, less 11. kindest 12. younger 13. older, stronger, 14. warmer, warmer 15. the hottest。