+Unit13++Section+A+(Grammar+Focus-4c)+预习导学 人教版九年级英语全册

人教版初中英语九年级全一册Unit13We’retryingtosavetheearth!(Period3)SectionA(GrammarFocus-4c)班级_________姓名_________学习目标学习目标学完这一课，你能够掌握：1．语法：复习现在进行时、现在完成时、被动语态、情态动词、usedto句型；2．交际功能：恰当运用各种时态谈论环境污染与环境保护。课前学习任务课前学习任务【学习任务一】词汇检测。1．参加________________2．v.承担得起(后果)；买得起________________3．关掉________________4．adj.可重复使用的；可再次使用的________________5．付费；付出代价________________6．采取行动________________7．n.运输业；交通运输________________【学习任务二】翻译下列句子。1．我们正在努力拯救地球。______________________________________________________________________2．这条河过去是那么干净。______________________________________________________________________3．空气被严重污染了。______________________________________________________________________4．没有科学研究表明鱼翅对健康有益。______________________________________________________________________5．我们应该帮助拯救鲨鱼。______________________________________________________________________课堂学习任务课堂学习任务【学习任务一】小组探究。1．观察GrammarFocus中的句子，找出每个句子涉及的语法项目。We’retryingtosavetheearth.Theriverusedtobesoclean.Theairisbadlypolluted.Noscientificstudieshaveshownthatsharkfinsaregoodforhealth.Weshouldhelpsavethesharks.2．观察GrammarFocus中的句子：（1）从SectionA部分找出几个与左栏例句所涉及语法项目相同的句子。________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________（2）写下你的发现及疑问：Notes:____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________【学习任务二】小组探究。根据提示为每一幅图片写一段对话。________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Whatis/arethe...madeof?Whereis/arethe...made?Whois/arethe...madeby?________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________一、现在进行时含义：表示现在正在发生或进行的动作。构成：am/is/are+动词________________用法：①说话时或目前正在进行的动作。e.g.Don’tmakesuchloudnoise.Thechildren________________(have)anEnglishlesson.②一些表示位置移动的动词，如go、come、leave、arrive等，常用现在进行时表________。e.g.He________________(leave)forShanghaitomorrow.二、现在完成时含义：表示________发生的动作对________造成的影响或产生的结果。结构：have/has+________________用法：①表示到现在为止已经发生的动作或状态，句中常用already、just、________（通常用于否定句和疑问句等）。②表示到现在为止曾经或从来没有发生过的动作或状态，句中常用ever或________。③表示到目前为止某一动作已经发生了若干次，句中常用once、twice、…times。④表示一段时间以来某一动作或状态一直发生，句中常用since或for。注意动词为________（延续性/非延续性）动词。三、被动语态构成：be动词+及物动词的________（1）一般现在时的被动语态：________/________/________+及物动词的________（2）一般过去时的被动语态：________/________+及物动词的________（3）一般将来时的被动语态：will/shall________+及物动词的________（4）现在进行时的被动语态：am/is/are+________+及物动词的________（5）现在完成时的被动语态：________/________been+及物动词的________（6）含情态动词的被动语态：情态动词+________+及物动词的________注意：主动语态变被动语态时，be动词的时态跟原主动语态中的时态________（一致/不一致）。四、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，________（能/不能）单独作谓语，________（有/没有）人称和数的变化。后面一般跟动词________。五、usedto句型usedto意为“________________”，指的是过去的习惯性动作，目的在于与现在形成对照。usedto中的to是不定式符号，后面跟动词________。在美式英语中，它的疑问式是：________+主语+useto________sth.?否定式是：主语+________use…”在英式英语中，它的疑问式是：________+主语+tosth.?否定式是：...________notto...或...________to...e.g.Mygrandpausedto________(walk)inthepark.【学习任务三】1．（1）Fillintheblankswiththecorrectformsoftheverbsinbrackets.Joe:_____youever_____(take)partinanenvironmentalproject?Ken:Yes,Ihave.I______(help)withaClean-UpDaylastyear.Itwas__________(consider)thebiggestclean-upprojectthiscity____ever_____(have).Joe:Howmanypeople______(take)part?Ken:I______(think)morethan1,000people______(come)tohelpout.Joe:That’sfantastic!Iguesseveryoneinthiscityis______(try)toimprovetheenvironment.Ken:Yes,wecan’taffordto_____(wait)anylongertotakeaction!（2）分角色朗读对话。2．Fillintheblankswiththeappropriatemodalverbsfromthebox.canwouldcouldhavetoshouldmustmay/mightPeople___________thinkthatbigthings_______bedonetosavetheearth.Manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you_____saveelectricitybyturningoffthelightswhenyouleavearoom.You______alsousereusablebagsinsteadofplasticbags.Ithinkit’sagreatideathatyounow_______payforplasticbagsinsomestores.Andinsteadofdrivingtoschoolorwork,you______rideyourbikeorwalk.Ifit’sfar,you______takethebus.Allthesesmallthings______addupandbecomebigthingsthat_______improvetheenvironment.Let’stakeactionnow!3．（1）Makealistofthingsthatpeoplecandotohelptheenvironment.usepublictransportation_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________（2）Discussyourlistwithyourpartner.A:Ithinkthateveryoneshouldusepublictransportation.B:Idisagree.It’sdifficultforparentswithyoungchildrentousepublictransportation…（3）利用讨论结果办一期以“保护地球”为主题的黑板报。【学习任务四】小组探究。1．takepartin意为“________”，其宾语通常是activity、meeting、conversation、war、project等。辨析takepartin、join与joinin________________指加入某一组织、党派或社会团体，从而成为其中一员，如参军、入团、入党等；________________参加某项工作、活动或运动，并在其中起一定作用；________________多指参加正在进行的活动，如竞赛、娱乐、谈话等，其后只能接表示活动的名词。选词填空（takepartin，join，joinin） ____________ ____________ ____________2．afford动