形容词和副词的三级

形容词和副词的三级单音节及部分双音节形容词比较级（-er）和最高级（-est）的规则变化。原级strongtallnicebrave比较级strongernicer最高级strongestnicest原级bigfatthinlazyugly比较级biggerlazier最高级biggestlaziest下列形容词比较级和最高级变化有什么规律？单音节及部分双音节形容词比较级（-er）和最高级（-est）的规则变化。•1一般在词尾直接加er/est:tall—taller—tallestsmallshortclevernewcleancoldhigh•2以不发音e结尾的单词加r/st:wide—wider—widestnicelargebravelate•3以辅音字母加y结尾的单词，把y改成i,再加er/est:busy—busier—busiesthappyheavyeasylazyuglyearly•4以重读闭音节结尾，且末尾只有一个辅音字母的单词，双写末尾的辅音字母，再加er/est:big—bigger—biggest(fat,thin,red,hot,)•5．其他双音节词和多音节词（一个元音为一个音节），比较级在前面加more，最高级在前面加most；形容词和副词前如加less和least则表示较不和最不如：beautiful→morebeautiful→mostbeautifulexciting→lessexciting→leastexcitingtired→moretired→mosttired(很特殊)importantcarefullyusefuldifficultinteresting不规则变化•good/wellbetterbest•bad/illworseworst•much/manymoremost•littlelessleast•farfarther/furtherfarthest/furthest•oldolder/elderoldest/eldest形容词和副词比较级的用法1．“A比B更……”用“------比较级+than-----”如：Thistreeistallerthanthatone.这棵树比那棵树高。注意：①在含有than的比较级中，前后的比较对象必须是同一范畴，即同类事物之间的比较。Itiscoldertodaythanyesterday.Mypenisbetterthanyours.Thebookismoreinterestingthanthatone.HewritesmorecarefullythanI.Lucygotupearlierthanwe.1.Bobis____(young)thanFred，but____(tall)thanFred.2.Heis________thananyotherboyintheclass.（clever）3.LiDeminglooks_______(fat)thanbefore.4.Whichis_________(heavy),ahenorachicken?5.Sheismuch_______(short)thanSally.6.heis___(bad)atEnglishthanI.7.Torontoisis_____thancityinCanada.(large)8.Sheis_______thanalltheotherstudents.(young)9.Adictionaryismuch_____(expensive)thanastory-book.10.Anorangeisalittle___(big)thananapple,butmuch___(small)thanawatermelon.11.MissChenis_______thanMr.Wang.(popular)12.Mr.Linis_____thanMr.Brown.(sad)13.Thebasketballis_____thanthebaseball.(big)14.QuestionAis_____thanQuestionB.(important)15.Aroseis_____thanaweed(野草).(beautiful)16.Tomdrivesmuch______thanJohn.(careful)17.Gold(黄金)is______(little)usefulthaniron(铁).2.表示甲和乙在某方面一样时，用“…as+原级+as…”Thisbookisasinterestingasthatone.HespeaksEnglishaswellasSally.JackisastallasI.Ihaveasmanybooksasyou.表示甲和乙在某方面不一样时，用“…notso/as+原级+as…”表不及，不如。Tomisn’tascleverasBill.Peterdidn’tlistentomesocarefullyasLucy.Heusedn’tgetupasearlyaswe.1.Yingtianisnotas______(tall)asYongxian.2.Nothingisso____asthisone.(easy)3.Mysisteristwoyears_______(old)thanI.4.Theboyisnotso______(interesting)ashisbrother.5.Dicksings_____(well),shesings______(well)thanJohn,butMarysings______(well)inherclass.6.Shewillbemuch______(happy)inhermewhouse.7.Thisdressis______that.(twice,as…as…,expensive)8.Nothingissoeasyasthis.=Nothingiseasierthanthis.=Thisistheeasiestthing.3.三个或三个以上的人或事物相比较，用最高级。形容词最高级前面要加the(副词最高级前面可以省略the),后面有表示范围的介词词组，...of,in,among….Thisappleisthebiggestofthefour.Whoisthestrongest,you,heorI?WuDongruns(the)fastestofall.Heisthemostpopularstaramongyoungpeople.Thiscoatistheleastexpensiveofthethree.Lesson1isthemostdifficultlessoninthisbook.1.Sheisalsothe_______(short)girlintheclass.2.Sallyisthe________(kind)personintheworld.3.Heisoneofthe_______(friendly)peopleintheclass.5.The_____(cheap)bagsarethenotusuallythebestones.6.Theshortoneisbyfar_______expensiveofthefive.7.Playingcomputergamesis_____ofalltheactivities.(interesting).8.TheNile(尼罗河)is_____riverintheworld.(long)9.Goodhealthis_______(important)thingforone’slife.10.Takingataxiis____waytogettotheairport.(easy)11.Test1is_________ofallthetests(试题）.（difficult）12.Whereisthe________busstop?(near)13.Thewhitefloweris________(beautiful).Theyellowfloweris___(beautiful)thanthewhiteflower.Theredfloweris____ofthethree.14.John’sparentshavefourdaughters,andsheis_____(young)child.4。形容词和副词比较级和最高级的修饰在比较级前面使用much,far,alot,even,any,still,alittle,no,byfar,abit,manyonce,twice,threetimes,分数，百分数修饰，表示程度“强得多或一点”。如：Awatermelonismuchbiggerthananapple.Shesingsfarbetterthantheothers.LilyisalittletallerthanLucy.Areyoufeelinganybettertodaythanyesterday?JackrunsmuchfasterthanTom.ThePacificisbyfarthelargestoceanintheworld.Myboxistwiceasbigasyours.Hefeelsevenworsetodaythanbefore.Hiscoatis20%moreexpensivethanmine.注意：very,quite,too一般只能修饰原级，不能修饰比较级。比较级和最高级的特殊用法：1.“比较级+and+比较级”或“moreandmore+原级”表示“越来越……”如：Itbecomeswarmerandwarmerwhenspringcomes.Itisgettingcoolerandcooler.Thewindbecamemoreandmorestrongly.Ourschoolisbecomingmoreandmorebeautiful.2.“the+比较级……,the+比较级”，表示“越……越……”。Themoremoneyyoumake,themoreyouspend.Thesooner，thebetter.Thereddertheroseis,themorebeautifulitlooks.Themorecarefulyouare,thefewermistakesyou’llmake.3.比较级与最高级的转换：比较级+than+anyother…Heisthetallestboyinourclass.=Heistallerthananyotherboyinourclass.==Nootherboyistallerthanheinourclass.=Nobodyelseistallerthanheinourclass.Mikeisthemostcarefulinhisclass.区别：anyother(同一范围）,any(不同范围)Theother+可数名词复数（同一范围）BeijingisbiggerthananyothercityinChina.=BeijingisbiggerthananycityinAfrica.Heistallerthananyotherboyinhisclass.=CanadaislargerthananycountryinAfrica.Heisthetallestboyinourclass.=Heistallerthananyotherboyinourclass.==Nootherboyistallerthanheinourclass.=Nobodyelseistallerthanheinourclass.4.…序数词+最高级.如：Ourschoolisthesecondbiggestinthecity.oneof+最高级+名词复数Heisoneofthetallestboysinhisclass.5.表示“两者中比较……的一个”，要用(the+比较级+ofthetwo