九年级英语 Unit 13 Section A(4a-4c).ppt

Unit13Wearetryingtosavetheearth SectionAGrammarFocus 4c Revision 不同种类的污染2 河底3 把垃圾扔到河里4 在 中起作用 differentkindsofpollution thebottleoftheriver throwrubbishintotheriver playapartin I Checkifyouknowthesephrases 5 在中国南部6 对 有害7 在 顶部8 海洋生态系统 insouthernChina beharmfulto atthetopof theocean secosystem II Translatethesentences 1 甚至是河底都满是垃圾 2 这个方法不仅残酷还对环境有害 Eventhebottomoftheriverwasfullofrubbish Thismethodisnotonlycruel butalsoharmfultotheenvironment 3 鲨鱼处于海洋食物链的顶部 4 许多人相信鱼翅对健康有好处 Sharksareatthetopofthefoodchainintheocean secosystem Alotofpeoplebelievethatshark sfinsaregoodforhealth 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 辨析 join joinin和takepartin to 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 afford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 afford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 pay afford Payattentiontothesentences 1 We retryingtosavetheearth 2 Theriverusedtobesoclean 3 Theairisbadlypolluted 4 Noscientificstudieshaveshownthatsharkfinsaregoodforhealth 5 Weshouldhelpsavethesharks Presentprogressive usedto Passivevoice Presentperfect GrammarFocus Modalverbs 现在进行时 PresentProgressive 结构 be am is are v ing标志词 Look Listen now rightnow e g Look Theboyiscrying 定义 表示说话时 瞬间 正在进行的动作 也表示目前或现阶段正在进行的动作 usedtodosth 表示过去常常做某事 而现在往往不做了 后接动词原形 beusedtodoingsth 表示习惯于做某事e g Iusedtogetupatsixo clock Joeisusedtodrinkingacupofcoffeeeverymorning usedtodo与beusedtodoing Translation 1 她过去常常周末和朋友闲逛 Sheusedtohangoutwithfriendsonweekends 2 他习惯于每天晚上睡得很晚 Heisusedtostayingup Exercise 被动语态 Passivevoice 定义 表示主语是动作的承受者 即行为动作的对象的一种语态 结构 be 过去分词e g Anewschoolwasbuiltlastyear Ourclassroomiscleanedeveryday TranslatethesentencesbyusingPassivevoice 1 刚才一些老年人参观了博物馆 2 工人们使用不同种类的机器工作 Themuseumwasvisitedbysomeoldpeoplejustnow Differentkindsofmachinesareusedtoworkbytheworkers Exercise 结构 has have 过去分词标志词 already yet ever never since for e g Ihaven tfinishedmyhomeworkyet 定义 表示动作已经完成 但对现在造成影响 或者表示从过去某一时间开始一直延续到现在并还可能持续下去的动作 现在完成时 PresentPerfect Completethefollowingsentences I be inBeijingfortwoyears 2 I never hear ofthatmanbefore 3 Tom work theresincetwoyearsago havebeen have heard hasworked Exercise 4 Thetwins wash theclothesforanhour 5 He play basketballsincethreeyearsago 6 Howlong Sally sing yet havewashed hasplayed has sung 1 情态动词本身有一定的词义 表示说话人的情绪 态度或语气 但不能单独作谓语 只能与其他动词构成谓语 常见的有 can could may might must need shall should will would 等 情态动词 2 情态动词无人称和数的变化 后接动词原形 否定式是在情态动词后面加not 个别情态动词有过去式形式 可用来表达更加客气 委婉的语气 e g Kencanclimbupthetresslikeakoala Tracycouldrideabicyclewhenshewasfiveyearsold Youmustn tplaywithfire Itisdangerous Translation 1 我们不能在教室里吃东西 2 首先你必须完成作业 3 他现在不可能在家 4 她一定知道这个问题的答案 Exercise Wecan teatintheclassroom Youmustfinishyourhomeworkfirst Hecan tbeathomenow Shemustknowtheanswertothisquestion 4a Fillintheblankswiththecorrectformsoftheverbsinbrackets Joe youever take partinanenvironmentalproject Eric Yes Ihave I help withaClean UpDaylastyear Itwas consider thebiggestclean upprojectthiscity ever have Have taken helped considered had had 参加 Joe Howmanypeople take part Eric I think morethan1 000people come tohelpout Joe That sfantastic Iguesseveryoneinthiscityis try toimprovetheenvironment Eric Yes wecan taffordto wait anylongertotakeaction took think came trying wait v 承担得起 后果 买得起 4b Fillintheblankswiththeappropriatemodalverbsfromthebox People thinkthatbigthings bedonetosavetheearth Manyforgetthatsavingtheearthbeginswithsmallthings Forexample you save may might must can canwouldcouldhavetoshouldmustmay might electricitybyturningoffthelightswhenyouleavearoom You alsousereusablebagsinsteadofplasticbags Ithinkit sagreatideathatyounow payforplasticbagsinsomestores Andinsteadofdrivingtoschoolorwork you rideyourbikeorwalk Ifit sfar you takethebus Allthese could haveto can should can could 关掉 adj 可重复使用的 付费 付出代价 smallthings addupandbecomebigthingsthat improvetheenvironment Let stakeactionnow could would can 采取行动 Makealistofthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner 4c Discussing 练习题 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 t 4 Excuseme IsthistherightwaytotheSummerPalace Sorry I mnotsure Butit be A mightB mustn tC can tD must5 Themanintheoffice beMr Black becausehewenthomejustnow A musn tB maynotC can tD needn t useto练习 A她过去常常周末和朋友闲逛 She withfriendsonweekends B他习惯于每晚睡得很晚 He atnight C Kenusedtobeafraidofdogs 改为一般疑问句 usedtohangout isusedtosleepinglate stayingup DidKenusetobeafraidofdogs 1 Hepromisedtopickmeupattheschoolgate However he yet A didn tarriveB doesn tarriveC isn tarrivingD hasn tarrived2 BaJin oneofthegreatestwritersinChina as People sWriter A isregardedB hasregardedC isregardingD regards Choosethebestanswer 3 WhereisTom He inhisroom A isreadingB readsC readD wasreading4 MayIgooutnow Dad No You letyourmotherknowfirst A canB mayC needD must 5 Herson coke butnowhe milk A usedtodrink isusedtodrinkingB usedtodrinking drinksC isusedtodrinking usedtodrinkD isusedtodrink isdrinking 1 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 was