人教版八年级英语上册Unit3课件

教学目标1.学习adj.和adv.比较级的构成。2.掌握下列句型：A+谓语+比较级+than+B.A+系动词+as+形容词原级+as+B.重难点1.复习形容词和副词的用法,学习adj.和adv.比较级的构成。2.掌握句型：A+谓语+比较级+than+B.A+系动词+as+形容词原级+as+B.outgoingbothbetterloudlyquietlyhard-workingadj.外向的、爱交际的adj.两个都adj.较好、更好adv.喧闹地、大声地adv.轻声地、安静地adj.勤勉的、辛勤的NewWordscompetitionfantasticwhichclearlywinthoughn.比赛、竞争、竞赛adj.极好的、了不起的adj.哪一个、哪一些adv.清楚地、明白地v.获胜、赢adv./conj.不过、虽然NewWordsHeighttallshortYiJianlianistall.HeJiongisshort.HairshorthairlonghairFanBingbinghaslonghair.WangFeihasshorthair.Weight体重heavythinHanHongisheavy.ZhaoLiyingisthin.Personality性格liketotalk,laughalotoutgoing外向的don’tliketotalk,liketobeveryquietserious／'siəriəs／严肃的XieNaisoutgoing.BaiYansongisserious.两者如何进行比较？1、表达“A和B一样”，用as…as的结构。公式:A+be动词+as+形容词原级+as…+BA+实义动词+as+副词原级+as…+BIamastallasyou.我和你一样高。HerunsasfastasI.他跑得和我一样快。2．表达“A不如B”用notas/so…as的结构。公式:A+be动词的否定形式+as/so+形容词原级+as…+BA+助词的否定形式+动词+as/so+副词原级+as…+BIamnotastallasyou.我没有你高。Hedoesn’trunasfastasI.他没有我跑得快。3、表达“A大于B”用“比较级+than”的结构。公式:A+be动词+形容词比较级+than+B…A+实义动词+副词比较级+than+B…Eg.Iamtallerthanyou.我比你高。HerunsfasterthanI.他跑得比我快。如何将adj.&adv.变成比较级？talltallerfastfasternicenicerthinthinner(以不发音的字母e结尾的+r)(一般在词尾+er)原形比较级(重读闭音节词词尾只有一个辅音字母时，先双写辅音字母再+er)earlyearlieroutgoingmoreoutgoing(以辅音字母+y结尾的单词，变y为i+er)(多音节词和部分双音节词前加more)归纳形容词或副词比较级的构成：3.重读闭音节词词尾只有一个辅音字母时，先双写辅音字母再+er4.以辅音字母+y结尾的单词，变y为i+er2.以不发音的字母e结尾的+r1.一般在词尾+er5.多音节词和部分双音节词前加more将下列形容词变成比较级形式：old→fat→young→ugly→high→low→light→white→sunny→hot→cool→olderfatteryoungeruglierhigherlowerlighterwhitersunnierhottercoolertallshortLiuXiangis___________YaoMing.YaoMingis_________LiuXiang.shorterthantallerthanLilyis____________Lucy.LucyandLilyaretwins(双胞胎).funnierthanfunny2.____→_____1._____→____shortfatthintallWritetheoppositewords（反义词）accordingtothepictures.1a3.______→______quietlyloudly4._________→_________shorthairlonghairMatchthewordswithitsopposite.把词语和它的反义词匹配起来。tallloudlythinshorthairlonghairheavyquietlyshortListenandnumberthepairsoftwinsinthepicture[1-3].1231b:IsthatSamplayingtheguitar?B:No,that’sTom.SamhaslongerhairthanTom.C:BothTomandSamcanplaythedrums,butSamplaysthembetterthanTom.Conversation1:That’sTara,isn’tit?B:No,itisn’t.It’sTina.TinaistallerthanTara.AndshealsosingsmoreloudlythanTara.Conversation2:IsthatPaul?B:No,that’sPeter.Peter’sheavierthanPaul.AndPaul’sshorterthanPeter.Conversation31cPracticetheconversationthenmakeconversationsabouttheothertwins.A:That’sTara,isn’tit?B:No,itisn’t.It’sTina.TinaistallerthanTara.AndshealsosingsmoreloudlythanTara.’spractice!IsthatTara?No,itisn’t.It’sTina.Tara’sshorterthanTina.TaraTina’t.It’sPaul.Paul’sthinnerthanPeter.Peter’stallerthanPaul.IsthatPeter?Listen.Arethewordsintheboxusedwith–(i)erormore?Completethechart.2afunny(run)fastfriendly(jump)highoutgoing(work)hardhard-working(getup)earlysmartlazy-er/-iermorefriendlyoutgoingfunny—funniersmart—smarterlazy—lazierfast—fasterhard—harderhard-working—morehard-workinghigh—higherearly—earlier:Tina,doyouthinkyouaredifferentfromyoursisterTara?Tina:Oh,sure.Welooksimilarbutwe’reverydifferent.Interviewer:Really?Inwhatwaysareyoudifferent?Tina:Well,I’mmoreoutgoingthanTara.I’mfriendlierandfunnier,too.AndIlovesports.Tara:Yes,shecanrunfasterandjumphigherthanme.:Who’smorehard-workingatschool?Tara:Tinathinkssheworksharderthanme,butIworkashardasTina.Butshe’ssmarterthanme.Tina:Notreally.IthinkI’mlazierthanTara.Shealwaysgetsupearlierthanme.talltallerMr.YaoistallerthanMr.Yi.Mr.Yiis___________thanMr.Yao.shorter更高的Mr.Yiistall.姚比易更高。易比姚更矮。heavyheavierMissBlackMiss.Blackis__________________________.heavierthanMiss.HanMiss.Hanisheavy.Mrs.Smith80yearsoldMr.Smith78yearsoldMrs.Smithis______thanMr.Smith.Mr.Smithis___________thanMrs.Smith.youngerMr.Smithisold.olderfunnyfunnierKungfuPandais______________________________.funnierthanTomandJerryTomandJerryisfunny.8:00Bobgetsup_______________________.earlierthanJulieJuliegetsupearly.thinthinnerMiss.BrownisthinnerthanMiss.Liu.MissBrownMissLiuisthin.bigThevolleyballisbiggerthanthetennis.biggerThetennisisbig.yesterday37℃today40℃Todayishotterthanyesterday.Yesterdaywashot.outgoingmoreoutgoingMiss.Xuis__________________thanMiss.Xie.moreoutgoing更外向的Listenagain.HowareTinaandTaradifferent?2bTina…ismoreoutgoingthanTara.isfriendlierandfunnier.runsfasterandjumpshigherthanTara.issmarterthanTara.islazierthanTara.Tara…worksashardasTina.getsupearlierthanTina.IsTomfunnierthanSam?No,heisn’t.SamisfunnierthanTom.IsSammorehard-workingthanTom?Yes.He’smorehard-workingthanTom.2dRole-playtheconversation.Julie:Didyoulikethesingingcompetitionyesterday,Anna?Anna:Oh,itwasfantastic!Nellysangsowell!Julie:Yes,butIthinkLisasangbetterthanNelly.Anna:Oh,whichisLisa?Julie:Theonewithshorterhair.IthinkshesangmoreclearlythanNelly.Anna:Yes,butNellydancedbetterthanLisa.Didyoudoanythingspeciallastmonth?