【外研社】八年级英语上册教案-【Unit 3】

Unit3Languageinuse【教学目标】TousethepointsinUnits1and2;Tousethepointsinunits1and2freely;TomakeSslearnabouttheenvironmentpollutionandhowtoprotecttheenvironment.【教学重点】Tomastertheword,thenumbersandthearticle.【教学难点】Theusingofthenumberandthearticle.【教学方法】PWPmethod,Formalandinteractivepractice【教学手段】Ataperecorder,multimediaandsomepictures【教学过程】TeachingProcedures:Step1LanguagepracticeTomasterthestructureofthegrammar1.That’sahugenumber.2.ThesmalllocalschoolinParkvillecloseddownfiveyearsago,andgettingtothenearestschoolinArnwicktakesheranhourbybus.Grammar:冠词冠词是置于名词之前，用以说明名词所指的人或事物的一种虚词。冠词有三种形式：不定冠词a,an,定冠the和零冠词。一、不定冠词a,an的用法1.表示数量，泛指同类事物中的“任何一个”，含有“一”的意思。如：Tomhadanappleforbreakfastthismorning.2.表示某类人或物，此时的不定冠词一般不译为“一”。如：Apandaeatsbamboo.3.表示数量，意为“每一”。如：Howoftendoyougoswimmingaweek?4.用于某些抽象名词前，表示“一种；一场；一阵等”。如：Ihaveaheadache.注：不定冠词a常用于以辅音音素开头的单数可数名词前；an常用于以元音音素开头的单数可数名词前。

二、定冠词the的用法1.特指某（些）人或物。如：Iliketheredclothes.2.特指上文提到过的人或物。如：Ihaveacamera.ThecameraiswhiteandIlikeitverymuch.3.指世界上独一无二的事物。如：thesun,themoon,theearth4.用于序数词、表示方位的名词或形容词最高级前面。如：thefirstboy,inthenorth,thetallestboy5.用于表示乐器的名词前面。如：playthepiano6.用于姓氏的复数形式前面，表示“一家人”或“夫妇俩人”。如：TheBlacksarehavingapicnicnow.7.与形容词连用,表示某一类人或物。如：therich,theold8.用于某些专有名词前面。如：theGreatWall9.用于一些固定短语中。如：inthemorning,bytheway三、零冠词的用法1.表示节日、星期、月份、季节等的名词前面一般不加冠词。如：onTeachers’Day,onMonday,inSeptember,inwinter注意：inthesummerof2015（表示特指，故加the）2.表示一日三餐的名词前面一般不加冠词。如：havelunch3.表示球类运动和棋类的名词与play连用时，一般不加冠词。如：playbasketball,playchess4.表示语言和学科的名词前面一般不加冠词。如：DavidcanspeakChineseverywell.HistoryisSusan’sfavouritesubject.5.名词前面有指示代词或形容词性物主代词时，不再加冠词。如：MayIhavealookatyourdictionary?

6.在一些固定短语中，名词前面用零冠词。如：gotobed,gotoschool,bybus,atnightStep2MatchthecountrieswiththeirpopulationsMatchthecountrieswiththeirpopulationsin2020.1)Chinaa)5,084,0002)theUSb)25,690,0003)Australiac)331,698,0004)NewZealandd)1,411,780,0002.ReadyouranswerstoActivity1tothewholeclass.3.Nowlistenandcheck.Step3LearningtolearnTolearnhowtoseeatableandachartWhenyouseeatableorachart,lookcarefullyatthelabelsandgraphstomakesurethatyouunderstandwhattheyareshowing.Lookatthechartbelow.Whatisitcomparing?Whatcanyouconclude?Step4ReadthechartandanswerthequestionsReadthechartandanswerthequestions.1.Whichcityhadthelargestpopulationin2018?2.Whichcity’spopulationwillincreasethemostfrom2018to2030?3.Whichcitywillhavealargerincreaseinitspopulation,MumbaiorCairo?4.Whichcity/citieswillhavethebiggestpopulationproblem?Why?Step5Writea,anorthewherenecessary1.Readthepassagecarefully.2.Thenusethearticlestofillintheblankswherenecessary.Minais(1)____eighteen-year-oldgirl.She’sgot(2)____brotherand(3)____sister.Minais(4)____oldestchildin(5)_____family.Shelivesin(6)____verybigcity.Shehas(7)___jobin(8)____hotel.Shehopesthatonedayshewillhave(9)___chancetogoto(10)___college.Step6CompletethesentenceswiththecorrectformofthewordsintheboxFirstreadthesentencesandusetherightformofthewordsfromtheboxtofillintheblanks.fewgoodmuchsmall1.WebelievetheschoolsinArnwickareverygood,andwe’reworkingtomakethemeven_______.2.Theirflatistoolargefortwopeople.Theywanttofinda_______one.3.Annaalwaystalksaboutherideas.Ithinksheneedstolisten________.4.Therearealotofparksinthiscity.Ithinkthereare______parksinalotofothercities.Step7CompletethediagramshowingpopulationproblemsReadthediagram.Usethewordsfromtheboxtocompletethediagram.TogettheanswersfromtheSs.aircityflatpublicserviceschooltrafficFromParkvilletoArnwick:problemsandsolutionsProblemsReasonsSolutionsPeoplefromParkvillelivein__________________________________.It__________________________________togotoschoolbybus.______________________________________.______________________________________.______________________________________.______________________________________.______________________________________.Thegovernmentismakingagreateffortto____________________________________.____________________________________.____________________________________.Step8CompletethepassagewiththecorrectformofthewordsfromtheboxReadthepassageandmasterthedetailsinthepassage.Usethewordstofillintheblanks.GettherightanswersfromtheSs.countrysidepollutionpopulationspacetrafficOurworldisfacingmanyproblems.Twoofthebiggestareincreasingpopulationandpollution.The(1)___________oftheworldisincreasingquickly.Manypeopleareleavingthe(2)__________toworkinthecities,butthereisnotenough(3)______forsomanypeople.Anotherhugeproblemfortheworldis(4)________.There’ssomuch(5)______ontheroadsthatinsomecitiestheairisheavilypolluted.Weshouldworkhardertoprotectourworld.Step10CompletethesentenceswiththecorrectformoftheexpressionsintheboxReadthesentencesandunderstandthemeanings.Choosethecorrectformoftheexpressions.allovertheworldcloseddowninthefutureittakesnot…anymore1)Growingpopulationisaproblem________________.2)Thepopulationoftheworldmaygrowmoreslowly________________.3)Thesupermarket___________whenabiggeroneopenedinthetown.4)Usually_________anhourtogettherebybus.5)Thetownhadalotofpollutioninthepastbutit’s_____aproblem_________.Step11ListenandchoosethebestsummaryToletthestudentsmasterthesummary.a)It’scheapertoshareacarthantohaveapersonalcar.b)Peopleinacarclubdon’toftentakebuses,trainsortheunderground.c)TherearenocarclubsintheUS.d)Joiningcarclubsisgoodforyouandforthecity.Step12ListenagainandchoosethecorrectanswerJoiningacarclubischeaper/moreexpensivethanhavingapersonalcar.Peopleincarclubspayfor/don’tpayforacarwhentheydrive.Peopleincarclubssometimes/nevertakeabusorrideabike.Peopleincarclubsprobablyare/aren’thealthier.Step13WorkinpairsanddiscussthisquestionDoyouthinkcarclubswouldbepopularinChina?Why?Whynot?Step14AroundtheworldToknowabouttheworldpopulationandwater.WorldpopulationandwaterWithmoreandmorepeopleintheworld,moreandmorewaterisused.Infact,wateruseisgrowingmorethantwiceasfastastheworld’spopulation!Asaresult,gettinggood,cleanwaterisbecomingaprobleminmanyplaces.Alotofwaterispollutedandinmanyareaspeoplehavetowalkalongwaytogetcleanwaterfordailyuse.Morethan3.4millionpeopledieeachyearfromdrinkingandwashingwithpollutedwater.Solet’sdoeverythingwecantostopthepollutionandsavewater.Step15WritingTopreparetomakeyourgraphingroups.Tomakeyourgraphandpresentyourgraphtotheclass.Writeaparagraphtodescribeyourgraph.Step16中考链接()1.Wecanliveabetterlifeifwecreate______lesspollutedworld.A.the B.anC.a D.不填(2014江苏镇江)()2.—Wouldyoulike______newblueT-shirt,Mary?—Sorry,Mom.Iprefer______orangeone.A.a;a B.a;anC.an;a D.an;an(2014广西来宾)()3.—HaveyouseenthefilmDad,wherearewegoing?—Yes.It’s______interestingone.A.a B.an C.the D./(2014云南曲靖)()4.—What’sthisinEnglish,Maria?