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Unit13Wearetryingtosavetheearth.Wearetryingtosavetheearth.PresentprogressiveTheriverusedtobesoclean.usedtoTheairisbadlypolluted.PassivevoiceNoscientificstudieshaveshownthatsharksfinsaregoodforhealth.PresentperferctWeshouldsavethesharks.ModelverbsGrammarFocusJoe:_____youever_____(take)partinanenvironmentalproject?Ken:Yes,Ihave.I______(help)withaClean-UpDaylastyear.Itwas________(consider)thebiggestclean-upprojectthiscity____ever________(have).Fillintheblankswiththecorrectformsoftheverbsinbrackets.4aHavetakenhelpedconsideredhadhadJoe:Howmanypeople______(take)part?Ken:I_____(think)morethan1,000people_____(come)tohelpout.Joe:That’sfantastic!Iguesseveryoneinthiscityis_____(try)toimprovetheenvironment.Ken:Yes,wecan'taffortto_____(wait)anylongertotakeaction!tookthinkcametryingwait1)时态：现在进行时：什么时候使用？结构是什么？标志性词语有哪些？现在分词的构成规则？现在完成时：什么时候用？结构是什么？标志性词汇有哪些？过去分词的构成规则？Ø现在进行时（1）含义：①表示现在正在进行的动作。②表示现阶段一直进行的动作。（2）基本结构：am/is/are+现在分词（3）标志词：now,rightnow,Look,Listenatpresent,thisweek,thesedays（4）现在分词的构成：①一般情况下在动词词尾加-ing。如：go--going。②以不发音的字母e结尾的动词，去掉e加-ing。如：have--having。③以一个辅音字母结尾的重读闭音节，双写最后一个字母，再加-ing。如：stop--stopping。Ø现在完成时（1）含义：①表示过去发生的动作，对现在造成的影响。②表示过去发生的动作或存在的状态一直延续到现在，还可能继续下去。（2）基本结构：have/has+过去分词（3）标志词：already,yet,ever,never,once,twice,recently,sofar,for+时间段,since+时间点/从句，inthepast+时间名词，inthelast+时间名词。（4）过去分词的构成：①一般情况下在动词词尾加-ed。如：work--worked。②以e结尾的动词后只加-d。如：close--closed。③以辅音字母+y结尾的动词，应将y改为i再加ed。如：study--studied。④以重读闭音节结尾的动词，要双写末尾的辅音字母再加-ed。如：stop--stopped。⑤不规则动词的过去分词：AAA型；AAB型；ABA型；ABB型；ABC型。2)语态：被动语态：与主动语态区别？构成是什么？一般现在时、一般过去时、一般将来时和情态动词的被动语态的结构分别是什么？3)情态动词：有无人称和数的变化？后接动词的什么形式？情态动词有哪些？各表示什么意思？4)usedto表示什么意思？后接什么？否定句和一般疑问句的形式是什么？usedto和beusedto的区别是什么？Ø情态动词情态动词表示说话人对某一动作或状态的态度，如认为“可能”、“应当”、“必要”等。can/could能够；may/might可能、可以；would愿意、将要；shall将（第一人称）；should应该；must必须need需要；haveto不得不；情态动词还可以表示推测：肯定推测，不定推测，否定推测情态动词练习1.--____youpassmeapen?I'dliketowritedownthephonenumber.--Sure.Hereitis.A.CanB.NeedC.MightD.Must2.--MayIgotothecinema,Mum?--Certainly,butyou___bebackby11o'clock.A.canB.mayC.mustD.need3.you___worryaboutme.It'snothingserious.A.can'tB.mustn'tC.needn'tD.won't4.--Excauseme.IsthistherightwaytotheSummerPalace?--Sorry,I'mnotsure.butit____be.A.mightB.mustn'tC.can'tD.must5.Themanintheoffice____beMr.Black,becausehewenthomejustnow.A.musn'tB.maynotC.can'tD.needn'tuseto练习A她过去常常周末和朋友闲逛。She_______________withfriendsonweekds.B他习惯于每晚睡得很晚。He____________________________atnight.C.Kenusedtobeafraidofdogs.(改为一般疑问句)______________________________?usedtohangoutisusedtosleepinglate/stayingupDidKenusetobeafraidofdogsI.用所给词的适当形式填空。1.Theoldmanused_____(be)ateacher.2.Weshould_____(clean)theroomeveryday.3.Look!Tom_________(sleep)inhisroom.4.Lotsoftrees__________(plant)onthehilleveryyear.5.He_________(live)herefor20years.tobecleanissleepingareplantedhaslivedII.用括号里所给动词的正确形式填空1.Thegirl___________(dance)intheclassroom.2.It's5o'clocknow.Mike_________(have)dinner.3.--_____youever____(be)totheUS?--Yes,twice.4.--MayIspeaktoJohn?--Sorry,he__________(go)toNewYork.hewillbebackintwodays.5.--DidyougotoJack'sbirthday?--No,I______________(notinvite).isdancingishavingHavebeenhasgonewasnotinvited5.--DoyouknowMr.Whitewell?--Yes.He__________(work)fortheWWFfortwoyears.6.I__________(live)heresince1990.7.--Doyouoftencleanyourclassroom?--Yes.Ourclassroom__________(clean)everyday.9.--What'sthis?--It'saCD.ThisCD_________(use)forlearningEnglish.10.Anewhighwayinmyhometown___________(bulid)nextmonth.hasworkedhavelivediscleanedisusedwillbebuilt1.Hepromisedtopickmeupattheschoolgate.However,he_____yet.A.didn’tarriveB.doesn’tarriveC.isn’tarrivingD.hasn’tarrived2.BaJin,oneofthegreatestwritersinChina,___as“People’sWriter”.A.isregardedB.hasregardedC.isregardingD.regardsChoosethebestanswer.3.—WhereisTom?—He______inhisroom.A.isreadingB.readsC.readD.wasreading4.—MayIgooutnow,Dad?—No.You_____letyourmotherknowfirst.A.canB.mayC.needD.must5.Herson_______Coke,butnowhe________milk.A.usedtodrink;isusedtodrinkingB.usedtodrinking;drinksC.isusedtodrinking;usedtodrinkD.isusedtodrink;isdrinking1.(2013江苏淮安)It'sgettingdark.Please________thelight.A.turnonB.turnoffC.turndownD.turnaround2.(2013湖北随州)–HowdoesJackusuallygotowork?—He______driveacar,butnowhe______theretoloseweight.A.usedto;isusedtowalkB.wasusedto;isusedtowalkingC.wasusedto;isusedtowalkD.usedto;isusedtowalking感悟中考3.(2013山东枣庄)Inthelasttenmonth,SeptemberMiracle(奇迹)____onCCTVformorethanfivetimesandispopularalloverthecountry.A.hasplayedthepianoB.hasgivenouttheirsongdisksC.haswrittensongsD.hasperformed4.(2013广东)NotonlymyfriendsbutalsoI_______interestedinfootballandMessiisourfavoritestar.A.beB.amC.isD.are5.(2013湖北宜昌)—Atpresent,oneofthebestwaystostudyisworkingingroups.—Morechances_______tostudentstolearnfromeachother.A.offerB.areofferedC.haveofferedD.areoffering感悟中考Fillintheblankswiththeappropriatemodalverbsfromthebox.People_____thinkthatbigthings_____bedone.However,manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you_____saveelectricitybyturningoffthelightswhenyouleavearoom.You_____alsousepaperorreusablebagsinsteadofplasticbags.4bcancouldwo