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A.形容词的比较级和最高级变化规则B.部分双音节与多音节的词比较级在原级之前加more,最高级在原级之前加mostbeautiful---morebeautiful---mostbeautifulinteresting---difficult---C.不规则变化的形容词:little/few（原形）-less（比较级）-least（最高级）good（原形）-better（比较级）-best（最高级）bad（原形）-worse（比较级）-worst（最高级）far（原形）--further—furthest例句：Tomistall.Johnistall.Bobistall.I'mastallasyou.TomisastallasJohn.构成原级比较级最高级单音节和少数双音节单词一般词尾加-er,-esttalllongoldsmalltallerlongeroldersmallertallestlongestoldestsmallest以字母e结尾的形容词或副词,直接加-r,-stnicefinelargenicerfinerlargernicestfinestlargest以重读闭音节结尾的形容词或副词,如末尾只有一个辅音字母,双写该字母,再加-er,-estbighotfatthinbiggerhotterfatterthinnerbiggesthottestfattestthinnest以“辅音字母+y”结尾的形容词或副词，把y变为i，再加-er,-estheavybusyearlyeasyheavierbusierearliereasierheaviestbusiestearliesteasiestBobistallerthanJohn.Johnisthetallestofthethree.Johnisthetallestinhisclass.写出以下各形容词的比较级和最高级：1.nice______________________2.fat____________________3.slow_____________________4.dry____________________5.happy____________________6.wet____________________7.much____________________8.ill_____________________9.little_____________________10.bad___________________11.thin______________________12.far____________________13.early_____________________14.careful_________________15.exciting___________________16.busy__________________2.根据句意，用所括号内所级形容词的比较等级形式填空：1.Mr.Smithis_________maninthisoffice.(rich)2.Winteris_________seasonoftheyears.(cold)4.Itismuch_______todaythanyesterday.(hot)5.Sheisalittle________thanherclassmates.(careful)6.________peoplecametothemeetingthanlasttime.(many)7.Whichbookis________,thisoneorthatone?(easy)8.Myroomis_______thanyours.(small)9.Hainanis_______fromBeijingthanHunan.(far)10.Skatingis_______thanswimming.(exciting)11.Jimis_______thanalltheothers.(honest)12.Thingsaregetting_______and_______.(bad)13.Thehigheryouclimb,the_______itwillbe.(cold)14.Nowhislifeisbecoming________and_______.(difficult)用适当形式填空：1.Bobis_________(young)thanFred.but___________(tall)thanFred.2.Almostallthestudents'facesarethesame,butLiDeminglooks_______(fat)thanbeforeafterthesummerholidays.3.Whichis_________(heavy),aduckorachicken?5.--How_________(tall)isSally?--She's1.55metres________(tall).WhataboutXiaoling?--She'sonly1.40metres________(tall).Sheismuch_______(short)thanSally.Sheisalsothe_______(short)girlintheclass.6.Heis______(bad)atlearningmaths.Heismuch_______(bad)atChineseandheisthe_________(bad)atEnglish.7.AnniesaysSallyisthe________(kind)personintheworld.8.Heisoneofthe_________(friendly)peopleintheclass,Ithink.9.Adictionaryismuch_________(expensive)thanastory-book.10.Anorangeiaalittle______(big)thananapple,butmuch________(small)thanawatermelon.11.TheChangjiangRiveristhe_______(long)riverinChina.12.Sueisalittle___________(beautiful)thanhersister.14.--Howdifficultisphysics?--I'mnotsure.--Isit________(difficult)thanmaths?--Idon'tthinkso.15.--Annieplaysthepianovery___________(well).--Sueplaysit_____(well)thanAnnie.AndSallyplaysitthe__________(well).16.Saturdayismy_________(busy)dayinaweek.17.Hermotherisgetting____________(fat)and________(fat).18.Ithinkit'stooexpensive.I'dlikea_____________(cheap)one.19.Hecomestoschoolmuch____________(early)thanI.21.Yourclassroomis__________(wide)and___________(bright)thanours.22.Practiseas__________(much)asyoucan.23.The________(much),the____________(good).24.Nowadays(现在)Englishis__________(important)thananyothersubject,1think.25.Mostofthestudentsthinkalionismuch________(dangerous)thanabearandItisthe__________(dangerous)animalintheworld.