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.Beijingisahugecity.2.Ittakesanhourtogettherebybus.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,atnightStep2Matchthecountrieswiththeirpopulations1.Matchthecountrieswiththeirpopulationsingroups.1)Chinaa)4,437,0002)theUSb)22,956,0003)Australiac)314,791,0004)NewZealandd)1,370,537,0002.ReadyouranswerstoActivity1tothewholeclass.3.Nowlistenandcheck.Step3LearningtolearnTolearnhowtoseeatableandachartWhenyouseeatableorachart,lookcarefullyatthelabelsandgraphstomakesurethatyouunderstandwhattheyareshowing.Lookatthechartbelow.Whatisitcomparing?Whatcanyouconclude?Step4ReadthechartandanswerthequestionsReadthechartandanswerthequestions.1.Whichcityhadthelargestpopulationin2000?2.Whichcity’spopulationwillincreasemostfrom2000to2025?3.Whichcitywillhavealargerincreaseinitspopulation,NewYorkorMexicoCity?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.Step6CompletethesentenceswiththecorrectformofthewordsintheboxFirstreadthesentencesandusether...
