初中英语人教版八年级上册Unit3 第一课时 语法专讲.ppt

Unit3Iammoreoutgoingthanmysister.,SectionAGrammarFocus,Teachingaims:,Masterthegrammar:形容词的原级的用法形容词的比较级的用法：形容词的比较级的变化规则：,1.什么是形容词的原级？表示修饰两种东西的程度是一样的,用as.as表示原级，译为:“和一样”。2.什么是形容词的比较级？表示两者相比，一个比另一个更，有比较级的句中有than,且仅限于两者比较。,形容词的原级和比较级,原级和比较级区分程度的不同：,原级是说明两个人物或事物的程度是一样。比较级是区分两个人物或事物的程度不一样。,Thistreeisas_asthattree.,Thegreenbagisas_asthered.,Thispenisas_asthatpen.,tall,big,long,原级,原级的用法：,e.g.1)LiMingrunsas_asLiLei.Theybothliketoexercise.fastB.fasterC.fastestD.thefastest2)Iamtallerthanher.(同义句）Sheisnot_me.3)Thisbookisas_(interest）asthatone.4)你认为英语不如数学重要吗？DoyouthinkEnglishis_math?,A,notas/soimportantas,interesting,as/sotallas,1.肯定形式：as+形容词或副词的原级+as意为“和.一样”2.否定形式：notas/so+形容词或副词的原级+as意为“不和.一样,YaoMingisJordan.,Jordan,226cm,198cm,tallerthan,Yaoming,tall,taller,Jordanistall.,比较级,￥20,￥30,cheap,cheaper,Thepinkdressischeap.,Theblackdressis_thepinkone.,cheaperthan,Theredcariscute.Thebluecar_theredcar.(蓝车比红车更可爱）,iscuterthan,Theredappleisbig.,Thegreenappleis_theredone.,biggerthan,56.1kg,heavy,58kg,Garfieldisheavy.Doraemonis_Garfield.,heavier,heavierthan,Garfield,Doraemon,short,-,shorter,small,-,smaller,nice,nicer,safe,safer,-,-,-,-,-,-,big,thin,heavy,heavier,happy,happier,找规律：,big,bigger,thin,thinner,大多数形容词和副词有三个等级：原级、比较级、最高级。一、形容词比较级的构成1.构成的不规则变化:2.构成的规则变化:,形容词和副词的比较级,1.构成的不规则变化:e.g.good/wellbetterbestbad/badlyworseworstmany/muchmoremostlittlelessleastfarfarther/furtherfarthest/furthest,2.构成的规则变化:1)单音节词和少数双音节词一般在词尾后加-er构成比较级或-est构成最高级.如：原级比较级最高级coldcoldercoldestbrightbrighterbrightestyoungyoungeryoungest,2)以字母e结尾的词只加r或-st构成比较级和最高级。原级比较级最高级nicenicernicestfinefinerfinestlargelargerlargest,3)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或-est。如:bigbiggerbiggestthinthinnerthinnest4)以“辅音字母+y”结尾的双音节词，先改y为i,再加-er或-est。如：easyeasiereasiesthappyhappierhappiest,5)多音节词和部分双音节词在词前加more或most。如：deliciousmoredeliciousmostdeliciousinterestingmoreinterestingmostinterestingimportantmoreimportantmostimportant,1.A+be+比较级+than+B.“A比B更.e.g.Paulis_thanPick.(thin)Tomismuch_thanSam.(heavy)Jimis_thanPeter.(funny),比较级的用法,thinner,funnier,heavier,2.“Which/Whois+比较级,AorB?”比较A、B两事物,问其中哪一个较时用此句型。Whichis_inChina,teaofcoffee?(popular)Whichis_(long),thewhiteoneortheblackone?,morepopular,longer,3.“比较级and比较级”意为“越来越”。多音节比较级用“moreandmore形容词原级”形式。如：Itsgetting_(越来越好）.Thecountryis_(越来越漂亮）.4.the+比较级，the+比较级，越.,越.。Themorewegettogether,thehappierwewillbe.,betterandbetter,moreandmorepopular,5.在形容词比较级前还可用much,alot,far,even,alittle来修饰,表示“的多”,“甚至”,一点儿”。（三多，一少，一甚至）e.g.1)Thiscityismuchmorebeautifulthanbefore.2)Shesalittlemoreoutgoingthanme.3)Itsevencoldertoday.6.注意:比较级不能用very,so,too,quite等修饰。Mybrotherisvery_(tall).,tall,Exercise,一将下列形容词变成比较级形式：,oldfatyounguglyhighlowlightwhitesunnyhotcool,older,fatter,younger,uglier,higher,lower,lighter,whiter,sunnier,hotter,cooler,二、词汇,1.Imtallbutmysisteris_(short).2.Mymotherhaslonghair,andmysisterhas_(long)hair.3.Thislittlebabyis_(outgoing)thanthatone.,shorter,longer,moreoutgoing,1.Thetwins_lovelygirls.A.areallB.arebothC.bothare2.IlikedrawingandIamgood_it.A.inB.onC.at3.Thatboxis_thanothers.A.moreheavierB.heavyC.muchheavier,三、单项选择,B,C,C,4.Sheisthreeyears_thanIam.A.oldB.moreoldC.older5.Ithinkagoodfriendshouldmakeme_.A.laughB.laughingC.tolaugh,C,A,6.Lucyisveryshort,butsheis_thanhersister.A.shorterB.longerC.tallerD.older7.Frankis_friendlythanhisbrother.A.alittlemoreB.afewmoreC.muchD.alittle8.Samis_atChinesethanJim.A.goodB.wellC.betterD.gooder,C,A,C,9.Thisoneistoolarge.Canyoushowmea_one?A.largerB.largeC.smallD.smaller10.DoyouthinkMarchis_thanJanuary?Yes,its_warmer.A.better,alittleB.well,muchC.worse,veryD.nicer,quite,D,A,3aUsethewordstowritequestionsandanswers.1.Julie/tall/youQ:_A:No,sheisnt.Shes_thanme.2.Jack/run/fast/SamQ:_A:No,hedoesnt.Heruns_thanSam.,IsJulieastallasyou?,taller,DoesJackrunfasterthanSam?,slower,3.yourcousin/outgoing/youQ:_A:No,sheisnt.Shes_thanme.4.Paul/funny/CarolQ:_A:No,heisnt.Hes_thanCarol.,Isyourcou