人教版八年级下册英语unit8---10-单元语法点+练习题复习ppt课件.ppt

现在完成时现在完成时一、构成一、构成现在完成时由现在完成时由“助动词助动词have/has+动词的动词的过去分词过去分词”构成。构成。二、用法二、用法1.表示过去发生或已经完成的某一动作对表示过去发生或已经完成的某一动作对现在造成的影响或结果现在造成的影响或结果。常见的常见的时态标志词有时态标志词有already(常用于肯定常用于肯定句句),yet(用于否定句和一般疑问句用于否定句和一般疑问句),just,ever,never,before,sofar等。如：等。如：SusanhasalreadywatchedtheTVplay.Haveyoufoundyournewbookyet?No.Ihaventfoundityet.Mygrandparentshaveevertraveledbyplane.Timhasntheardofitbefore.2.表示动作或状态在过去已经开始，持续表示动作或状态在过去已经开始，持续到现在，也许还要持续下去到现在，也许还要持续下去，该用法常，该用法常适用于适用于延续性动词延续性动词。常见的。常见的时态标志词时态标志词有有since和和for。since意为意为“自从自从”，它既可作介词，它既可作介词，也可作连词。作介词时，后接过去的时也可作连词。作介词时，后接过去的时间点，表示某事开始的时间；作连词时，间点，表示某事开始的时间；作连词时，引导时间状语从句，从句常用一般过去引导时间状语从句，从句常用一般过去时。时。如：如：Mysisterhasbeenateachersincetwoyearsago.TheSmithshaveworkedtheresincetheymovedtothecity.for作介词作介词，后接一段时间，表示一种状况，后接一段时间，表示一种状况已经持续了多长时间。如：已经持续了多长时间。如：Theyhavelivedinthehouseforeightyears.另外，对另外，对since和和for引导的时间状语引导的时间状语(从句从句)提问时常用提问时常用howlong。如：。如：Ihavestayedinthiscityfortendays.(对对划线部分提问划线部分提问)Howlonghaveyoustayedinthiscity?1.Mygrandparents_inthatcitysince2019.2.A.willliveB.liveC.havelivedD.wereliving2.Amy,canwegiveawaythesesofttoys?We_themformanyyears.Mom,butIwanttokeepthebear.A.boughtB.hadC.haveboughtD.havehadCD3.I_acameratwoweeksagobutIhaventhadachancetouseit.A.haveboughtB.boughtC.willbuy4.Howmanytimes_Carl_totheGreatWall?Onlyonce.A.does;goB.did;goC.has;goneD.has;beenBD5.MissBrown,we_cleaningourclassroom.Canwegohomenow?A.finishB.finishingC.arefinishedD.havefinished6.I_scaredofdogseversinceadoghurtmewhenIwasfiveyearsold.A.willbeB.wasC.havebeenD.wouldbeDC7.BenandSuearenthome,arethey?No.They_toLondononbusiness.A.havegoneB.goC.havebeenD.willgo8.LeiFeng_formanyyears,buthisspiritisstillencouragingus.A.diedB.hasdiedC.wasdeadD.hasbeendeadAD9.Mr.Brown_hishometownsincehe_thearmy.A.hasleft;joinedB.hasbeenawayfrom;hasjoinedC.hasbeenawayfrom;joinedD.left;joinedC10.Iheardanewsongontheradio.I_highandlowinthemusicstore,butIcantfindthesong.A.searchB.havesearchedC.amsearchingD.willsearch11._haveyoustayedinBeijing?Formorethanfivemonths.A.HowoftenB.HowlongC.HowfarBB.根据句意及所根据句意及所给给首字母提示，首字母提示，补补全句中所全句中所缺缺单词单词。1.Youcantdependonyourparentsf_.Youmustlearntotakecareofyourself.2.Mycousinlikesfootballverymuch.Heisabigf_ofit.foreverfan3.Robertdidnttakeanyphotosbecausehedidnttakeac_withhim.4.Tokeeps_,wemustfollowthetrafficrules.5.Maryo_twocars.Oneisred,andtheotheriswhite.6.Itissaidthatlisteningtoclassicalmusic,e_Mozart,canhelpwithmathandsciencelearning.camerasafeownsespecially.根据句意，从方框中根据句意，从方框中选择选择恰当的恰当的单词单词填填空，有的需要空，有的需要变换变换形式。形式。1.Tonywaswalking_thepostofficewhenwesawhimthismorning.2.Youmustworkhardifyouwanttoget_.succeed,encourage,towards,regard,peace,amongtowardssuccess3.Tolivea(n)_life,mygrandparentsmovedtothecountrylastyear.4.Imshy.Myparentsoften_metospeakloudlyinfrontofpeople.5.Look!Therearemanybeesdancing_flowers.6.Paulwasverybrave.Weall_himasahero.succeed,encourage,towards,regard,peace,amongpeacefulencourageamongregardedIII.根据括号内的要求完成下列各根据括号内的要求完成下列各题题。1.TheGreenshavealreadymovedtoParis.(改改为为一般疑一般疑问问句句)_theGreens_toParis_?2.Hashissisterfinishedthesciencefiction?(补补全否定答全否定答语语)No,_.3.Ms.Leeboughtthishousein2008.(用用since替替换换in改写句子改写句子)Ms.Lee_thishousesince2008.Havemovedyetshehasnthashad4.MissLinhasbeeninthisschoolforfiveyears.(对对划划线线部分提部分提问问)_MissLin_inthisschool?5.Theoldmaninthepicturemademethinkofmygrandpa.(改改为为同同义义句句)Theoldmaninthepicture_me_mygrandpa.HowlonghasbeenremindedofIV.根据根据汉语汉语意思完成英意思完成英语语句子。句子。1.根据根据调查调查，我班大部分学生喜，我班大部分学生喜欢欢唱歌。唱歌。_thesurvey,mostofthestudentsinmyclasslikesinging.2.在清理在清理书书房房时时，伯特找到了他，伯特找到了他爷爷爷爷奶奶的一奶奶的一张张老照片。老照片。Bertfoundanoldphotoofhisgrandparentswhenhewas_thestudy.3.我奶奶将近我奶奶将近90岁岁了。了。Mygrandmasageis_90.Accordingtoclearingoutcloseto4.赶快，否赶快，否则则我我们们会会误误了了飞飞机。机。_,orwellmisstheplane.5.杭州是一个美杭州是一个美丽丽的城市。每年成千上万的城市。每年成千上万的人参的人参观观它。它。Hangzhouisabeautifulcity._peoplevisititeveryyear.6.说实说实在的，在的，这这是是贾贾森曾森曾经经看看过过的最糟糕的最糟糕的的电电影。影。_,itstheworstmoviethatJasonhaseverseen.HurryupThousandsofTobehonestV.根据根据汉语汉语意思及括号内所意思及括号内所给给英文提示英文提示语语，将下列句子翻，将下列句子翻译译成英成英语语。1.卢卢克克(Luke)通通过过了英了英语语考考试试，真是，真是难难以置以置信！信！(unbelievable)2.霍莉霍莉(Holly)学学习习数学有困数学有困难难。(problem)3.爬爬这这座山似乎很困座山似乎很困难难。(seem)ItsunbelievablethatLukepassedtheEnglishexam!Hollyhasproblems(in)learningmath.Itseemsdifficulttoclimbthemountain.4.从她九从她九岁岁开始，我就开始，我就认识认识她了。她了。(eversince)5.海斯先生海斯先生(Mr.Hayes)还还没有到达机没有到达机场场。(yet)6.你曾你曾经见过经见过我的新自行我的新自行车吗车吗？(ever)Ihaveknownhereversinceshewas9yearsold.Mr.Hayeshasntarrivedattheairportyet.Haveyoueverseenmynewbike?InTheGivingTree,atreehelpsaboyinmanywaysthroughouthislife.JohannaBozuwareadthebooktofourthgradersataschoolinDallas,Texas.VI.阅读阅读短文，从方框中短文，从方框中选择选择恰当的恰当的词词并用其并用其适当形式填空，使短文完整、通适当形式填空，使短文完整、通顺顺，每，每词词限限用一次。用一次。volunteer,improve,and,promise,for,important,kind,organize,million,valueBozuwaworks(1)_EarthDayNetwork(EDN).Thisgrouphelpstoimprovetheenvironment.Whiletheclassdiscussedthebook,(2)_outsidetheclassroomwereplanting25treesaroundtheschoolsplayground.“Itwasgoodforourschool,”teacherDianaBirdsongsaid.She(3)_theevent.volunteer,improve,and,promise,for,important,kind,organize,million,valueforvolunteersorganizedThisplantingandmanyothersarepartofanEDNprogramcalledtheCanopyProject.Itstartedin2012andEDN(4)_toplant10milliontreeswithpartnersoverfiveyearsaroundtheworld.volunteer,improve,and,promise,for,important,kind,organize,million,valuepromisedInMay2019,EDNandpartnersplanted20different(5)_oftreesinDenver,Colorado.Aleaderofthegroup,saidthatthisplantingwasalsodone(6)_airquality(质质量量).Butthetreesprovidebeautyandeducationalchancestoo.volunteer,improve,and,promise,for,important,kind,organize,million,valuekindstoimproveSofar,theCanopyProjecthasplanted(7)_oftreesinover20countries.ThisincludestreesplantedinHaitiafterterribleearthquakes,inUgandatohelpimprovefarming,(8)_inFrancetorestore(修复修复)forests.volunteer,improve,and,promise,for,important,kind,organize,million,valuemillionsandBozuwasaysschooltreeplantingshaveanadded(9)_.“Studentsnowunderstandthe(10)_ofthetreesoutsidetheirwindowandontheirplayground,”shesays.“TheywilltakecareoftheEarthbetterforyearstocome.”volunteer,improve,and,promise,for,important,kind,organize,million,valuevalueimportance