九年级英语鲁教版下册Unit8-SectionAGrammar-focus-4c.ppt

Unit8We retryingtosavetheearth SectionA3GrammarFocus 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 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 Whatafinedaytoday Look Whataretheydoing Exercise 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 4c Makealistofthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner usepublictransportation n 交通运输 turnoffthelightswhenyouleavearoom usereusablebagsinsteadofplasticbags rideyourbikeorwalktoschoolorwork stopusingpapernapkins 餐巾纸 recyclebooksandpaper Discussion Ithinkthateveryoneshouldusepublictransportation Idisagree It sdifficultforparentswithyoungchildrentousepublictransportation 1 Wecan taffordtowaitanylongertotakeaction affordv 承担得起 提供 给予affordtodosth 常与can beableto连用 买得起 有足够的 e g Wecan taffordtopaysuchaprice 我们付不起这个价钱 Dancingaffordsuspleasure 跳舞给我们带来快乐 2 saveelectricitybyturningoffthelightswhenyouleavearoom