北师大版高中英语ppt课件 37页

Lesson3CleanMachinesUnit9Wheels\nPartIPre-reading1.Howmanydifferentkindsofcarscanyouname?\nWarmupDoyouknowthenamesofthefollowingfamouscars?\nFord(America)\nMercedesorBenz(Germany)\nBMW(Germany)\nCadillac(America)\nBuick(America)\nAudi(Germany)\nDifferentkindsoffuelcoalpetrol(汽油)diesel(柴油)gas(天然气)2.Whatkindofenergydothecarsuse?3.Whatarethemaindisadvantagesofcars?\n4.Doyouknowanythingaboutsolarcars?Wheredotheygettheirpowerfrom?usethesun’senergyTheadvantages?\nPartIIReadingSolarCarRacingAboutsolarcars:1.Whatisasolarcar?2.Whataretheadvantagesanddisadvangesofsolarcars?3.Whatisthehighestandaveragespeedofsolarcar?\nAboutMarieLogan:1.What’sherexperiencesindesigningsolarcars?(kindergarten,university,5-6,4years,race2/6)2.Howlongdidthefastestcartaketocomplete4,500km?3.Whatarethetwothingsshehasbeendoingrecently?whatisherpurpose?Now，CompleteExercise3onP40.\n3.Fillintheblanks.Solarcarsarecarsthatusethesun’senergyfor1.________.Theyarecleanand2.________.Alotofpeoplethinkthatsolarcarsaretooslowornotvery3.________.Designershavetopersuadethemofthe4._________ofsolarcars.Solarcarsaregettingbetterallthetime.Theyhavereached5.________ofnearly80k.p.h.powersafereliableadvantagesspeeds\n2.Imagineyourselfasasolarcardesignerandyouarehavinganinterviewwithajournalist.Workinpairsanddoaninterview.\nPartVLanguagePointsimpression印象（可数）；假想；印迹★havea…impressionof对…有…的印象Iwantpeopletohaveagoodimpressionofme.★leave/makea…impressionon给…留下…的印象Thatyoungmanhasleftabadimpressiononme.那个年轻人给我留下了一个很差的印象。拓展：impressvt.impressiveadj.★beimpressdby/with★impressAwithB用B让A印象深刻\n(1)我们对她精彩的表演有了深刻的印象。Wewerealldeeply___________________________________________________.(2)他的激动人心的演讲给我留下了深刻的印象。Hisexcitingspeech__________________________________________________.(3)她的教学比他的外表更能使人印象深刻。Herteachingis_________________thanhisappearance.impressedbyherexcellentperformanceleftadeepimpressiononmemoreimpressiveWeallhaveadeepimpressionofherexcellentperformance.\n2.appreciate欣赏；感激+n.Nobodyappreciatedhistalent.没人欣赏他的才能。Iappreciatewhatyou’vedoneforme.感谢你为我所做的一切。★appreciate(one’s)doingsth.感激（某人）做某事我很感激他总是帮助我。★sb.appreciateitif……如果…将会非常感激Iwouldappreciateitifyoucouldgivethechancetojoinintourclub.派生：AppreciationHavean~of对…有欣赏力Hehasan~ofbeauty.In~of为感激…Iwritethisletterin~ofhiskindness.\n(1)如果你能够及时回复，我会非常地感激。(2)她发现自己很难欣赏外国音乐。(3)在那封信中，校长表达了对那位学生的赞赏。Iwillappreciateitverymuchifyoucanreplyintime.Shefoundithardforhertoappreciatetheforeignmusic.Inthelettertheheadmasterexpressedhisappreciationofthestudent.\n二.KeyPhrases：1.sofar到目前为止，常同现在完成时态连用。=uptonow/bynowfarfrom远远不SofarMrWuhashadsixbookspublished.[即时演练]翻译句子：到目前为止，我对她一点都不了解。Ihaveknownnothingabouthersofar.\n2.takeplace发生；举行，无被动，无进行。Howdidthisaccidenttakeplace?这次事故是怎么发生的？Thesportsmeetingwilltakeplacetomorrow.运动会将于明天举行。拓展：takeone’splace就座taketheplaceof代替happenhappentodo碰巧做某事\n[即时演练]下列句子均有一处错误，请找出并将其改正。TheopeningceremonyhadalreadybeentakenplacewhenIgotthere.(2)Howwasthequarrelhappenlastnight?(去掉been)(was改为did)\n3.Persuadesb.ofsth.说服某人相信某事Wefinallypersuadehimofthiswisedecision.派生：Persuasionn.说服persuasive.adj有说服力的\nPartIVGrammarPresentPerfectandPresentPerfectContinuous1)A.You’vebeen_________(design)solarracingcarsforalongtime.B.I’ve________(design)fiveorsixdifferentcarssofar.1.Fillintheblankswiththegivenwords.designingdesigned\n2)A.I’vebeen_____________(takepartin)racesforaboutfouryears.B.Howmanyraceshaveyou____________(takepartin)?3)A.I’vebeen________(build)anewcarwithateamfromQueenslandUniversity.B.We’ve____________(do)alotofworkonit.takingpartintakenpartinbuildingdone\n4)A.You’vebeen________(write)abookaboutsolarcars.B.I’veonly____________(write)thefirstfewchapters.writingwrittenWeusethePresentPerfecttotalkaboutafinishedactivity(achievement)andthePresentPerfectContinuoustotalkaboutanunfinishedactivity.\n1)I’vereadHamlet.Means:2)I’vebeenreadingHamlet.Means:I’vefinishedreadingit.Ihaven’tfinishedreadingit.WeusethePresentPerfecttofocusonaresultofanactivity,especiallywhenwegiveanumberorquantity.WeusethePresentPerfectContinuoustofocusontheactivityitself,especiallytoexplainvisibleconsequencesofit.\n3)He’srunthreemiles.focusontheresult:focusontheactivityanditsconsequences:4)He’sbeenrunningforanhour.He’scoveredthedistanceofthreemiles.Thisiswhathe’sbeendoingforthelasthourandwhyheisexhaustednow.\n[异同点分析]现在完成时侧重于表示曾经发生的动作对现在的影响或动作已经完成；现在完成进行时强调动作仍在继续。\n[专题练习]1.Theunemploymentrateinthisdistrict_______from6%to5%inthepasttwoyears.A.hasfallenB.hadfallenC.isfallingD.wasfalling答案为A。inthepasttwoyears意为“在过去的两年里”，最常与其搭配的时态就是现在完成时。通常句中有时间状语inthepast/previous...years/centuries/days时，要用现在完成时。\n2.Customersareaskedtomakesurethatthey_______therightchangebeforeleavingtheshop.A.willgiveB.havebeengivenC.havegivenD.willbegiven答案为B。give后接双宾语，therightchange作直接宾语，customers作间接宾语，所以当customers作主语时，谓语动词要用被动语态。根据句意顾客被要求在离开商店前确认已被找零，表示某事发生前已经完成的动作，故使用完成时态。\n3.Myfriend,who_____________ontheInternationalOlympicCommitteeallhislife,isretiringnextmonth.A.servedB.isservingC.hadservedD.hasserved答案为D。时间状语allhislife表示一段时间，由后面一句下个月将退休，可知allhislife表示的是从之前某个时间开始到现在的一段时间，故用现在完成时，表示从过去直到现在一直持续的动作。\n4.We________ournewneighborsyet,sowedon’tknowtheirnames.A.don’tmeetB.won’tmeetC.haven’tmetD.hadn’tmet答案为C。yet在这里几乎是使用完成时态的标志，根据句意又可以推断出前半句的意思是我们到现在还没有见过新邻居，故使用现在完成时。现在完成时在此表示过去发生的某一动作对现在造成的影响。\n5.Iwon’ttellthestudenttheanswertothemathproblemuntilhe_______onitformorethananhour.A.hasbeenworkingB.willhaveworkedC.isworkingD.hadworked答案为A。由句意可知，在学生研究这道题目的时间满一个小时之前“我”都不会告诉他答案，从句意推断，这里强调的是动作持续一段时间而且还在进行，所以应该用现在完成进行时。\n6.Thepowerstation________electricityforthecityforthreeyearsandtheircooperationwillcontinue.A.providedB.wasprovidingC.providesD.hasbeenproviding答案为D。理解句意：这家电厂为这个城市供电三年了，它们的合作还会继续。forthreeyears确定了要使用完成时态；现在完成进行时在此句中表示过去的动作持续到现在，而且还将继续进行。\n7.He______foraprojectinRussiainthelastthreemonthsandhewillreturnhomesoon.A.hadworkedB.worksC.hasbeenworkingD.isworking答案为C。在本题中inthelastthreemonths决定了要使用完成时态；从句意中可以推断出此处不是以过去某个时间点为基点的，故不用过去完成时。现在完成进行时在本句中表示从过去一直持续到现在、刚刚或即将停止的动作。\n8.Sinceshesawtheoldfilmlastweek,she_______theoldsongformanydays.A.issingingB.hasbeensingingC.singsD.sang答案为B。从since和formanydays可看出要使用完成时态。现在完成进行时在此处表示从过去持续到现在重复出现的动作。