初中英语比较级和最高级.ppt

比较级和最高级,英语句子中，将比较两个主体的方法叫做“比较句型”。其中，像“A比B更”的表达方式称为比较级。,最高级表示三者或三者以上的人或物进行比较时，用最高级。,形容词和副词的比较等级构成方式:1.一般单音节adj的比较级多在原形上加-er,最高级加-est.多音节adj在原形前加more,最高级加most,2.辅音字母加y结尾时,比较级去y变i再加-er,最高级去y变i再加-est.eg.friendlyfriendlierfriendliest,3.以不发音的e结尾时加-r/-st.eg.finefinerfinest4.重读闭音节结尾的词,如末尾是一个辅音字母,双写这个辅音字母,再加-er/-est.eg.bigbiggerbiggest5.不规则adj的比较级与最高级如下:,注：older一般比年龄，新旧；elder指长幼关系(一般修饰名词);elderbrother/sisterfarther指距离更远；further指抽像的.IwanttostudyEnglishfurther.,1“A+be+形容词比较级+than+B”意思为“A比B更”。,如：Thistreeistallerthanthatone.这棵树比那棵树高。,在含有连词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。,在比较级前可使用much，alot，too,far（更加，的多），even（更，更加），alittle（有点）修饰。,如：Awatermelonismuchbiggerthananapple.,very,quite一般只能修饰原级，不能修饰比较级。,注意：,2“A+be+as形容词原级as+B”意思为“A和B一样”。,如：JackisastallasI.Jackisnotascleverashissister.,3Aistwice(threetimesfourtimes.)as形容词原级asBA是B的2、3、4倍.eg.HeistwiceasoldasI.Theirroomisfourtimesaslargeasours.,2“比较级+and+比较级”或“moreandmore+原级”表示“越来越”,如：Itbecomeswarmerandwarmerwhenspringcomes.,春天来了，天气变得越来越暖和了。,Itisgettingcoolerandcooler.,天气越来越凉爽。,Thewindbecamemoreandmoreheavily.,风变得越来越大。,Ourschoolisbecomingmoreandmorebeautiful.,我们的学校变得越来越美丽,3在含有or的选择疑问句中，如果有两者供选择，前面的形容词要用比较级形式。,如：Whoistaller,TimorTom?谁更高，Tim还是Tom?,4.“the+比较级,the+比较级”，表示“越越”。,Themoremoneyyoumake,themoreyouspend.,钱你赚得越多，花得越多。,Thesooner，thebetter.,越快越好。,6.形容词、副词的最高级形式主要用来表示三者或三者以上人或事物的比较，表示“最”的意思。,句子中有表示范围的词或短语。如：ofthethree,inourclass等等。,如：Heisthetallestinourclass.,他在我们班里是最高的。,7.“否定词语+比较级”，否定词语+soas结构表示最高级含义。,Nothingissoeasyasthis.,=Nothingiseasierthanthis.,=Thisistheeasiestthing.,形容词，副词的最高级,1.最高级前常用的修饰语：the,3.the+序数词+最高级+名词+in/ofTheYellowRiveristhesecondlongestriverinChina,5.Thisisthe+最高级+名词(that)Imeet/know/ThisisthemostbeautifulcitythatIhaveevervisited.,4.oneofthe+最高级+名词复数+in/ofShenzhenisoneofthebiggestcitiesinChina,2.the+最高级+of/in(三者及以上范围的)/A,B()orC?Mymotheristhebusiestinmyfamily,比较级与最高级的互换1Jimistallerthananyotherboyinourclass.(吉姆比我们班上任何一个男孩都高)=Jimistallerthantheotherboysinourclass.(在我们班上吉姆其它的男孩高)=Jimisthetallestinourclass.（吉姆是我们班最高的）2.Jimistallerthananygirlinourclass.（吉姆比我们班的任何一个女孩都高）,使用形容词和副词比较级和最高级应注意事项1.形容词的最高级前必须有the,而副词的最高级前the可以省略。,2.在进行比较时，必须是同类事物相比较。HisrulerislongerthanI.Hisrulerislongerthanmine.,(2011年中考真题)NancyandLucyaretwins.Insomewaytheylookthesame,butNancyis_thanLucy.A.tallB.tallerC.tallest,(2002年中考真题)ThepopulationofChinais_thananyothercountryintheworld.A.largerB.lessC.smallerD.bigger,练习：用所给形容词的适当形式填空。Herhairis_(long)thanmine.Whois_(short),TomorJack?Lilyis_(quiet)thanhersister.Tina,pleasecometoschoolalittle_(early)nexttime.The_(hard)youstudy,the_(good)gradesyoullget.Itbecomes_and_(hot)whensummercomes.,longer,shorter,quieter,earlier,harder,better,hotter,hotter,单项选择。1.Lucyisveryshort,butsheis_thanhersister.A.shorterB.longerC.tallerD.older2.Frankis_friendlythanhisbrother.A.alittlemoreB.afewmoreC.muchD.alittle3.Samis_atChinesethanJim.A.goodB.wellC.betterD.gooder,4.Thisoneistoolarge.Canyoushowmea_one?A.largerB.largeC.smallD.smaller5.DoyouthinkMarchis_thanJanuary?Yes,its_warmer.better,alittleB.well,muchC.worse,veryD.nicer,quite,6.Im_quieterthanSusan.A.littleB.fewC.alittleD.afew7.Thewatchisnot_beautifulasthatone.A.veryB.tooC.soD.more,8.HisFrenchisntsogoodas_.A:heB:himC:hisD:hers9.Itsmuchbetterthan_classes.A.haveB.hasC.tohaveD.having10.Herbagisnewerthan_.A.mineB.myC.meD.I,11.The_,thebetter.A.muchB.manyC.moreD.most12.Doyouknowwhois_ofthetwins?A.shorterB.heavierC.theolderD.thefunny13.TheweatherinNorthChinaiscolderthan_inSouthChina.A.B.thisC.theoneD.that,13.Whichoneis_,thisoneorthatone?A.goodB.badC.bestD.worse14.Heis_thanme.A.olderB.elderC.youngD.moreyounger15.Ithinkyourroomis_bigger.A.alotB.alotofC.lotsofD.more,5.表示倍数的比较级用法：,.A+be+倍数+times+the+形容词对应名词形式+of+B.,如：Thenewbuildingisthreetimestheheightoftheoldone.,这座新楼比那座旧楼高三倍。(新楼是旧楼的四倍高),.A+be+倍数+times+as+原级+as+B.,如：AsiaisfourtimesaslargeasEurope.,亚洲是欧洲的四倍大。(亚洲比欧洲大三倍),.A+be+序数词+比较级+than+B.,如：Ourschoolistwicebiggerthanyours.,我们学校比你们学校大两倍。,1.the+比较级+ofthetwo“两个中比较的这一个”Lucyisthe_(高)ofthetwinsisters.Myhatisthe_(漂亮)ofthetwo.2.比较级and比较级相同“越来越”Itisgetting_and_.Ourcountryisbecoming_and_.3.The比较级,the比较级“越越”The_the_.The_heis,the_hefeels.,darker,morebeautiful,stronger,taller,more,better,busier,happier,注意：,stronger,darker,数量+比较级thanMyfatheristhreeyearsolderthanmymother.,I.用形容词的正确形式填空1.Whichdoyoulike_(well),apples,pearsorbananas?2.Ithinkthisstoryis_(interesting)thanthatone.3.Inthemorningheis_(early).Hisfatheris_(early)thanhe.Hismotheristhe_(early)ofthethree.4.TheYellowRiveristhesecond_(long)riverinChina.5.Hethinkshiscornis_(delicious)ofallthefood.6.Ifeelmathis_(difficult)thanChinese.,best,moreinteresting,early,earlier,earliest,longest,mostdelicious,the,moredifficult,句型转换：1.Tomistall.Jimisshort.(比较级合并)Tomis_Jim.2.Myhairislong.Maryshairislonger.(合并成一句)Maryshair_mine.3.Pe