九年级英语全册 Unit 13 We’re trying to save the earth Sec

Unit13Wearetryingtosavetheearth!SectionA(GrammarFocus-4c)takepartinaffordturnoffreusablepayfortakeactiontransportation参加v.买的起；承担的起（后果）关掉adj.可重复使用的付费；付出代价采取行动n.运输业；交通运输WordsandexpressionsReviewWe’retryingtosavetheearth.PresentprogressiveTheriverusedtobesoclean.usedtoTheairisbadlypolluted.PassivevoiceNoscientificstudieshaveshownthatsharkfinsaregoodforhealth.PresentperferctWeshouldhelpsavethesharks.ModelverbsGrammarFocusJoe:_____youever_____(take)partinanenvironmentalproject?Ken:Yes,Ihave.I_____(help)withaClean-UpDaylastyear.Itwas___________(consider)thebiggestclean-upprojectthiscityever________(have).Fillintheblankswiththecorrectformsoftheverbsinbrackets.Havetakenhelpedconsideredhadhad4aJoe:Howmanypeople______(take)part?Ken:I_____(think)morethan1,000people_____(come)tohelpout.Joe:That’sfantastic!Iguesseveryoneinthiscityis_____(try)toimprovetheenvironment.Ken:Yes,wecan'taffordto_____(wait)anylongertotakeaction!tookthinkcametryingwaitFillintheblankswiththeappropriatemodalverbsfromthebox.People_____thinkthatbigthings_____bedonetosavetheearth.Manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you_____saveelectricitybyturningoffthelightswhenyouleavearoom.You_____alsousereusablebagsinsteadofplasticbags.4bcanwouldcouldhavetoshouldmustmay/mightmaymustcouldcouldIthinkit’sagreatideathatyounow_______payforplasticbagsinsomestores.Andinsteadofdrivingtoschoolorwork,you_____rideyourbikeorwalk.Ifit’sfar,youtakethebus.Allthesesmallthings______addupandbecomegoodthingsthat________improvetheenvironment.Let’stakeactionnow!havetocancouldcanMakealistofthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner.4cA:Ithinkthateveryoneshouldusepublictransportation.B:Idisagree.It’sdifficultforparentswithyoungchildrentousepublictransportation...usepublictransportation...Discussing...usepublictransportationtakeyourownshoppingbagswhengoshoppingreducetheuseofairconditionersinsummerturnoffthelightswhenyouleavetheroomgrowmoreplants...A:Ithinkthateveryoneshouldtakeyourownshoppingbagswhengoshopping.B:Iagree.It'sgoodfortheenvironment.A:Ithinkthateveryoneshouldreducetheuseofairconditionersinsummer.B:Idisagree.Thesummerissohot,especiallyinsouthChina.Withoutairconditioners,peoplemaynothavethepatiencetowork.A:Ithinkthateveryoneshouldturnoffthelightswhenyouleavetheroom.B:Iagree.It'sgoodtosaveenergyresources.A:Ithinkthateveryoneshouldusepublictransportation.B:Idisagree.It'sdifficultforparentswithyoungchildrentousepublictransportation.A:Ithinkthateveryoneshouldgrowmoreplants.B:Iagree.Growingmoreplantswillprovideusmorefreshairandmakeourplanetmorebeautiful.现在进行时（1）含义：表示正在发生或进行的动作。（2）基本结构：主语+be+现在分词（be的形式随主语的变化而变化）（3）基本用法：①表示现在正在进行的动作。特征：常常与now或具体的时间连用，有时句中会有感官动词来提示，或通过上下文来暗示。②表示现阶段一直进行的动作。这类动词常常是延续性动词。常与atpresent,thisweek,thesedays等连用。③表示主语的特征、性格、能力等本单元复习现在进行时、usedto句型、被动语态、现在完成时和情态动词。现在完成时（1）含义：表示过去发生的动作对现在还有影响。（2）基本结构：主语+have/has+过去分词（3）基本用法：①表示过去发生的动作，但强调对现在产生影响。特征：不能与表示具体的时间状语连用。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。常常与since,for,inthepast+时间名词，inthelast+时间名词等时间状语连用，而且谓语动词要求是延续性动词。③表示一种“经历或体验”，即可以表示经历过也可以是从来都没有经历过。被动语态初中阶段我们学习了七种被动结构，归纳如下：（1）一般现在时的被动语态：am/is/are+过去分词（2）现在完成时的被动式：have/has+been+过去分词（3）现在进行时的被动式：am/is/are+being+过去分词（4）一般过去时的被动式：was/were+过去分词（5）过去进行时的被动式：was/were+being+过去分词（6）过去完成时的被动式：had+been+过去分词（7）一般将来时的被动式：will/begoingtobe+过去分词（8）含有情态动词的被动式：情态动词+be+动词的过去分词。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。情态动词本身有一定的意义，但不能单独作谓语，也没有人称和数的变化。后面一般跟动词原形。usedto结构usedto意为“过去常常做某事”，指的是过去的习惯性动作，目的在于与现在形成对照。usedto是个情态动词，其中的to是不定式符号，后面跟动词原形。在美式英语中，它的疑问式是：Did＋主语＋usetodosth．？否定式是：主语＋didn'tuse．．。在英式英语中，它的疑问式应当是：Used＋主语＋tosth．？否定式应当是usednottoHeusedtostayuplate.他过去常熬夜到很晚。辨析：join,joinin和takepartinjoin加入组织，团体，党派等，有作为其中的一个成员的含义;后面也可以加表示人的名词，表示和某人一起参加某活动joinin加入一种具体活动。takepartin指参加会议或群众性活动等，着重说明句子主语参加该项活动并在活动中发挥作用。Willyoujoinusinthediscussion?你参加我们的讨论吗？ShejoinedtheYoungPioneers.她加入了少先队。Whydidn'tyoujoininthetalklastnight?昨晚你为什么没参加座谈？Didyoutakepartinthesportsmeet?你参加运动会了吗？1.—Haveyou_____aclub?—Yes,I’minaswimmingclubandIoften_____theswimmingtraining.A.joined;takepartinB.joined;joinC.takenpartin;joinD.takenpartin;joinin2.—We’regoingforapicnic.Wouldyouliketo____us?—Whynot?Let’sgo!A.attendB.joinC.joininD.takepartin⑴afford是动词，意为“买得起,担负得起”，通常与can,could,beableto连用,多用于否定句中。•Theycouldn’tafford$50foraticket.他们拿不出50美元买一张票。⑵afford后面常跟带to的动词不定式。•Wecan’taffordtogoabroadthissummer.今年夏天我们没有足够的钱出国。例句：MissTaylorneverwastesmoneyonanythingtooexpensive,eventhoughshecan_____to.Shehasdonatedmuchofthemoneyshesavedtocharities.A.affordB.allowC.remindD.payafford知识链接I.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)intheclassroomnow.2.It's5o'clocknow.Mike_________(have)dinner.3.--____youever____(be)totheUS?--Yes,twice.4.--MayIspeaktoJohn?--Sorry,he__________(go)toNewYork.Hewillbebackintwodays.5.--DidyougotoJack'sbirthday?--N