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Unit1Howtallareyou?talltalleroldoldersmallsmalleryoungyoungerstrongstrongershortshorterlonglongerbigbigger◇Lookatthepicturesandunderstand看图并理解ABthinthinnerheavyheavier形容词比较级大多数形容词和副词有三个等级：原级,即原形比较级,表示“较……”；“更……”Grammar形容词和副词的比较级最高级，表示“最……构成的规则变化:1.一般在词尾加—ereg.cold–colderold—older一、形容词的比较级变化形式1.tall--________7.small--_______2.short--________8.cool--________3.strong--________9.cold--________4.old--________10.warm--_______5.young--________11.deep--_______6.long--________12.light--_______tallershorterstrongerolderyoungerlongersmallercoolercolderwarmerdeeperlighter2.重读闭音节词末尾只有一个辅音字母时,先双写这个辅音字母,再加-er.big–biggerthin–thinner3.以“辅音字母+y”结尾的双音节词，先改y为i,再加-er。easy–easierhappy–happier重读闭音节双写的练习•big--_______•thin--_______•fat--_______•hot--______•wet--______•sad--______biggerthinnerfatterhotterwettersadder•以前学的ing格式也遵守重读闭音节要双写的原则。如run-running，swim-swimming。去y为i+er的练习•heavy--_______•funny--_______•happy--_______heavierfunnierhappier•以前学习名词的复数和单三形式时，格式也遵守不发音的y要去y为i+es的原则。•如butterflies•fly--flies4.多音节词和部分双音节词在词前加more。eg.delicious–moredeliciousinteresting–moreinterestingserious-moreserious多音节比较级的练习•多音节是指大于等于3个音节的单词。前面+more（更加），表示更加怎么样。•beautiful–morebeautiful•excited—moreexcited构成的不规则变化:eg.good/well–betterbad/badly–worsemany/much–morelittle–lessfar–farther/further以不发音的e结尾•不发音的e结尾，或者指单个e结尾的，不包括发音的e和字母组合。•large--_______•nice--_______•fine--_______largernicerfiner综合练习•tall—•funny—•large—•big—•beautiful—•good—tallerfunnierlargerbiggermorebeautifulbetter1.表示两者(人或事物)的比较。eg.IamtallerthanTom.Mydressismorebeautifulthanhers.二、形容词的比较级的用法ZengZhiweiisshort.PangChangjianisPangChangjianisZengZhiwei.shorter.shorterthanthan比Jordanistall.YaoMingistaller.Jordan2.26m1.98mYaoMingistallerthanjordan.LiuHuanisold.FeiMaoisFeiMaoisLiuHuan.80岁90岁older.olderthanLinXinruisyoung.LiuYifeiisLiuYifeiisLinXinru.18岁28岁younger.youngerthanThebluerulerislong.Theredrulerislonger,Theredrulerislongerthantheblueruler.fastfaster◇Lookatthepicturesandunderstand看图并理解填空题—比较级填空1.Ais10yearsold,Bis11yearsold.—Ais______thanB.2.Tomis160cm,Lucyis170cm.—Lucyis_______thanTom.3.Theelephantis893kg,thepigis158kg.—Theelephantis_______thanthepig.youngertallerheavier填空题—计算1.Ais23yearsold,Bis4yearsolderthanA.Bis____________yearsold.2.Lucyis159cm,Aliceis16cmshorterthanLucy,Aliceis_______________cm.3.Amyis43kg,Zhangpengis23kgheavierthanAmy,Zhangpengis____________kg.(23+4=27)27(159-16=143)143(43+23=66)66我们已经初步学了比较级的运用，那么在生活中我们如何让运用比较级呢?问年龄：Howoldareyou?问身高：Howtallareyou?问体重Howheavyareyou?问长短：Howlongisyourleg?问大小：Howbigareyourhands?Howoldareyou?I’m20yearsold.Howtallareyou?I’m150centimeters（tall）.['sentə,mi:təz]I’m1.50meters（tall）.pointHowheavyareyou?I’m46kilograms.['kiləgræm]1.Jim’sbagis_________thanKate’s.A.biggerB.bigC.biggestD.thebigger2.Myshoesarecheaperthan________.A.youB.yourC.yoursD.youroneSelf-checkI.Multiplechoices4.Thisclassroomis__________thanthatone.A.manybigB.muchbigC.manybiggerD.muchbigger连词成句1.shorterYouyouraresisterthan2.2yearsolderShe’smethan3.heavyyouHoware4.bigHowfeetareyour5.HowistallLucy6.Iyoustrongeramthan7.meyouAreshorterthanLet’stalkLet’stalk[‘daɪnəsɔː]dinosaur恐龙[hɔːl]hall大厅[‘mitɚ]meter米[bəʊθ]both两个都Let’stalkwhatsizeareyourshoes?Size7Readandwrite•Countryside[‘kʌntrɪsaɪd]乡村•Lower[‘ləʊə]更低•Shadow[‘ʃædəʊ]影子•Smarter[‘smɑ:tə]更聪明•become[bɪ‘kʌm]成为