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Unit1语法篇____________________________________________________________________________________________________________________________________________________________________学生通过本讲学习，能够掌握本单元的重点语法，并在综合能力上有一定的拓展。一、情态动词can的基本用法情态动词can有一定的词义,但不能独立存在,它必须与动词原形一起构成谓语。情态动词can没有人称和数的变化。其具体用法如下:1.表示能、会,指脑力或体力方面的能力。例如:IcanspeakEnglish.我会讲英语。JimcanswimbutIcan't.吉姆会游泳,但我不会。2.表示可能,常用于否定句或疑问句中,指某种可能性。例如:HanMeican'tbeintheclassroom.韩梅不可能在教室里。Canhecomeheretoday,please?请问他今天能到这里来吗？3.表示可以,常用于口语中,指许可或请求做某事。例如:CanIhaveacupoftea,please?请问我可以喝一杯茶吗？Youcangoout.你可以出去了？二、情态动词的注意事项1.can的口诀：情态动词can、can、can，动词原形跟后面。变疑问can提前，变否定not后面加上去。主语人称单复数，情态动词不能变。2.情态动词can可以引导肯定句和疑问句。（1）、肯定句：主语+can+动词原形+其他成分（2）、疑问句：can+主语+动词原形+其他成分3.can引导的肯定句变为疑问句的方法：（一调二改三问号）（1）、can提前，首字母大写。（一调）（2）、肯定句中主语在变成疑问句时的变化。（二改）如：肯定句：Youcanfeedtheanimals.你可以喂动物。疑问句：CanIfeedtheanimals?我能喂动物吗？（3）、在句尾后面加问号。（三问号）4.Can的一般疑问句回答：（1）、肯定回答：Yes，主语（必须人称代词）+can.（2）、否定回答：No，主语（必须人称代词）+cannot（can’t）/mustn’t.Yes或no后要使用逗号，除了I以外，其他人称都要小写。5、表推测是肯定推测用mustbe，否定推测为can’tbe1．—______Itakesomephotosinthehall?—No,you______.A.Can,needn’tB.Must,mustn’tC.Could,won’tD.May,mustn’t2．—Whoisthemanoverthere?IsitMr.Li?—No,it______behim.Mr.Liismuchtaller.A.mustn’tB.maynoC.can’tD.needn’t3．—Dad,mustIfinishmyhomeworktoday?—No,you________.Youmaydoittomorrow.A.needn’tB.mustn’tC.don’tD.won’t4．—MustIgowiththemtomorrow？—No，you______.A.mustn'tB.shouldn'tC.needn'tD.can't5.—CanIwatchTVforawhile？—No,you_______.Youhavetofinishyourhomeworkfirst.A.shouldn’tB.can’tC.mustn’tD.won’t解析：1.needn’t表示没有必要mustn’t表示禁止；can，may的一般疑问句的否定回答按照语气的轻重都可以分为can’t和mustn’t两种。本题意思是我可以在这拍照吗？不，你禁止在此拍照。故选D2.本题考的是情态动词表推测，mustbe表示肯定推测can’tbe表示否定推测，故选C。3.must的一般疑问句的否定回答为needn’t或don’thaveto，故选A。4.must的一般疑问句的否定回答为needn’t或don’thaveto，故选C。5.can，may的一般疑问句的否定回答按照语气的轻重都可以分为can’t和mustn’t两种。此题是你禁止这样，你必须先完成作业，故选C。基础演练一、用can,,must,need的适当形式填空：1.You________returnthelibrarybookontime.2.I________(not)findthewaytothehospital.________youshowmetheway?3.—________Ifinishtheworkrightnow?—No,you________(not).You________doitlater.4.It’stimeforclass.You________________stopplayingfootball。5.We________________startrightnow,ortheywouldgettherefirst.二、选择正确的单词填空(who,where,when)1._____isthatprettygirl?Sheismysister.2._____areJackandTom?Theyarebehindyou.3._____doyougotoschool?IgotoschoolfromMondaytoFriday.4._____hasabeautifulflower?Johnhasabeautifulflower.5._____arethey?Theyaremyparents.答案：一、1：must2:cannot,can3:Must,neednot,can4:must5:must二、1:Who2:Where3:When4:Who5:Who三、单项选择1.SusanisgoodatEnglishandshesingEnglishsongs.A.needB.mayC.canD.must2.Irideabike,butIdriveacar.A.can;canB.can't;can'tC.can;can'tD.am;amnot3.---Lisa,youspeakFrench?---Yes,butonlyalittle.A.needB.mustC.mayD.can4.---Mary,youplaychess?---Yes,Icandoitverywell.Iwanttojointhechessclub.A.canB.shouldC.mustD.need5.Theboyhasnoarms.Hewritewithhishands.A.canB.mustC.cannotD.may6.Mysistercanplaythepianowell.(改为一般疑问句并作出肯定回答)yoursisterthepianowell?Yes,she.7.TonycancookChinesefood.(就划线部分提问)Tonydo?8.Manystudentscansingthissong.(对划线部分提问)manystudents?9.Icanplaytheguitar.(用thetrumpet改为选择疑问句)playtheguitarthetrumpet?10.Wewanttojointhemusicclub.(就划线部分提问)youwanttojoin?1-5CCDAC6.Can,play;can7.Whatcan8.Whatcan;do9.Canyou,or10.Whatclubdo巩固提高1.李连杰会表演功夫。JetLikungfu.2.我姐姐不会跳舞。Mysister.3.他哥哥小提琴拉得好。Hisbrother.4.Susan不会弹钢琴。Susanpiano.5.我想加入音乐俱乐部。Ithemusicclub.答案：1.cando2.can'tdance3.playstheviolinwell4.can'tplaythe5.wanttojoin一、单项选择1.---Doyouplaypianoinyourfreetime?---No,Ilikesports.Ioftenplaysoccerwithmyfriends.A./;theB.the;/C.the;theD.a;a2.Iwanthomethisweekend.A.goB.togoC.goesD.togoing3.Pleaseshowyournewbike.A.IB.myC.meD.mine4.Ourteacherisgoodsingingandheisgoodus.A.at;atB.with;atC.at;withD.with;with5.Jimplaysbasketballwell,sohecanjointhe.A.musicclubB.artclubC.EnglishclubD.sportsclub6.Theboy'smotheralwayshimastorybeforehegoestobed.A.saysB.speaksC.tellsD.talks7.---CanyouhelpmemyEnglish?---Yes,sure.A.withB.ofC.onD.about8.---Whatdoyoulike?---Ilikebasketball.A.subjects;playB.sports;toplayC.subjects;toplayD.sports;play9.---Whendoyouusuallyplaybasketballwithyourfriends?---.A.OnweekendB.OntheweekendC.InweekendD.Intheweekend10.Maryneedstoschoolbefore7:30fromMondaytoFriday.A.getB.togetC.getsD.getting11.Janecanplaytheviolin,shecan'tplayit.A.or;goodB.and;wellC.but;goodD.but;well12.---Whatcanshedo?---ShecanChineseKungfu.A.playB.doC.makeD.help13.---Cantheyplaychess?---No,.A.theyareB.theycanC.theycan'tD.theyaren't14.OurschoolwantstwogoodteacherstheSchoolArtFestival.A.withB.ofC.forD.at15.---CanIhelpyou?---.Iwantabluesweater.A.ExcusemeB.No,thankyouC.Sorry,Ican'tD.Yes,please二、完形填空Iamaboy.MynameisTomGreen.Icansinganddance,butI16playtheguitar.MysisterCindycansing,17.Shecanalsoplay18.Shewantstojointhemusicclub.ButIwanttojointhe19club.Iliketoplaysoccerandvolleyball.Ioftenplaysoccer20myclassmatesafterschool.ItisTuesdaytoday.IamverybusyonTuesday.At8:00Ihavemath.It'sdifficultandboring.Butmymathteachersaysit'suseful.Thenat9:00IhaveEnglish.IlikeEnglishbecauseit'sfunand21.IlovemyEnglishteacher.Heisgreatfun.Ihavefourclassesinthemorningand22intheafternoon.Ihavelunch2312:00to1: