young-yonger-yongest old older -oldest tall -taller -tallest small-smaller -smallestearly-earlier-earliest thirsty-thirstier-thirstiest1. 一般情况下加-er 或est :2. 以字母e结尾的形容词，加-r 或- st4. 以 “辅音字母y”结尾的双音节词，先改“y”为“i”，再 加-er 或-est.bigbigger -biggest fatfatter-fattest形容词比较级最高级规则nice nicer-nicest safe safer -safest3. 重读闭音节词只有一个辅音字母时，应先双写辅音字母， 再 加-er或-est.一一5.部分双音节词或多音节词前面加more ,most.如:interesting more interesting most interestingfamous more famous most famous原级比较级最高级good/wellbetterbestbad/illworseworstmany/much moremostlittlelessleastfaroldolder elderoldest eldestfartherfurther farthest furthest两好、两坏、两多、 一少、一老 、一远.Read and compare : young long full short small old fine easy hungry early heavy big redyounger youngest longer longest fuller fullest shorter shortest smaller smallest older oldest finer finest easier easiest hungrier hungriest earlier earliest heavier heaviest bigger biggest redder reddesthealthymanyfamousillexcitingcarefullywet hotlittlefewhealthier healthiestmore mostmore famous most famousworse worstmore exciting most excitingmore carefully most carefullywetter wettesthotter hottestless leastfewer fewest二.形容词、副词比较等级的用法1.原级:可用very, quite, so, too,等词修饰.e.g Jim is very tall.2.比较级:可用much ,many ,a lot ,a little ,a bit 等修饰.其主 要句型有：比较级+than e.g Mary is much younger than Sue.疑问句+动词+比较级,AorB? e.g Who draws better ,Tom or Jim? Which like better, A or B? e.g Which do you like better ,maths or English? 比较级+ and+比较级，表示越来越e.g the days are getting shorter and shorter. the +比较级 , the + 比较级,表示越越 e.g he says ,”the busier ,the better.”3.最高级 : 形容词的最高级要加定冠词the , 副词 最高级可省略the, 主要句型有: the + 最高级 +ofin Jim works hardest of us all.My mother is the busiest in my familye.g 疑问词+ 动词+ 最高级 which like best, A, B or C?三.使用比较级和最高级的几个注意点比较应在同类事物中进行.避免双重比较.比较级和最高级前的修饰语不可误用.最高级后的介词in与of. a. in 表示“在内(指某范围内)” 可以跟表示单位, 组织,时间等单数名词. b. of表示属性(指在同类的人,物中)后可接 the +基数词 / the +基数词+名词复数 / all +the + 复数名词/all形容词的最高级前要用the比较级前加the.Do some exercises 同义句转换1. He is the tallest student in his class. He is _ _ _ _ student in his class. He is _ _ _ _ students in his class.2. Peter draws well, Lilei draws better. Lilei draws _ of the two.3. The tractor goes faster than the bike. The bike goes _ _ than the tractor.4. His cakes dearer than the twins cakes. His cake is _ _ of the three.taller than any other taller than the otherbettermore slowlythe dearest选择填空 1. Which does Jimmy like ,Chinese or Art? A. well B. best C. better D. much 2. The Chang jiang River is one of in the world. A. the longest river B. longest rivers C. the longest rivers D. longer rivers 3. of the two women is Mrs Brown.A. The beautiful B. The more beautiful C.More beautiful D. The most beautiful 4. My mooncake is nicer his. A. like B. with C. for D. than 5. You are fatter than . A. he B. his C. him D. he is tall 6. He jumps of the three. A. far B. further C. farthest D. furthest 7. My hair is longer than . A. my sister B. Kate C. my brothers D. LucysCCBDACC8. There are paper here .Please bring some. A. little B. less C. fewer D. a little 9. The pen is than that one. A. more cheap B. cheap C. much cheaper D. quite cheaper 10.Tom speaks Chinese better than Jimmy. A. more B. very C. a lot of D. much 11.There are girls in Class Two than in Class Four. A. more B. nicest C. most D. best 12.Its too for you to do that. A. easy B. more dangerous C. harder D. the easiest 13.Who has apples now, Jim, Lily or Lucy? A. much B. biggest C. better D. the most 14.You have more rulers than me. But are nicer than . A.mine, yours B. mine, your C. my, yours D. my, your 15.Tingting is than Meimei, but Meimei is than Tingting.A. tall, stronger B. taller, strong