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2019-2020年九年级英语全册Unit13We’retryingtosavetheearth第3课时学案新版人教新目标版SectionAGrammarfocus—4b【学习目标】
1.学习并掌握新词汇reusableaffordtransportation
2.学习并会用以下常用表达trytodosth.usedtodosth.is/aredoingbeconsideredtakepartin;playapartindoingsth.helpwithhelpoutturnoffinsteadofpayforaddupaffordtodosth.not…anylongertakeactionIt’sdifficultforsb.todosth.
3.学习并掌握下列句型1We’retryingtosavetheearth.2Theriverusedtobesoclean.3Itwasconsideredthenicestriverintown.4Theairhasbeereallypolluted.5Weshouldhelpsavethesharks.6Everyoneshouldplayapartinkeepingthecityclean.7Youcansaveelectricitybyturningoffthelightswhenyouleavearoom.8Wecannotaffordtowaitanylongerbeforetakingaction!9It’sdifficultforparentswithyoungchildrentousepublictransportation【重点难点】正确使用本课语法要点【新知预习】根据句意和首字母提示完成单词
1.Itwasc________thenicestriverintown.
2.Youcanalsousepaperorr_______bagsinsteadofplasticbags.
3.Wecannota_______towaitanylongerbeforetakingaction!
4.Wethinkthateveryoneshouldusepublict________.
5.Iguesseveryoneinthiscityistryingtoimprovethee_________.【课堂探究】
一、现在进行时概念表示现阶段或说话时正在进行的动作及行为时间状语nowatthistimethesedaysetc.基本结构am/is/are+doing否定形式am/is/are+not+doing.一般疑问句把be动词放于句首
二、usedto的意思是“过去经常”,其中的to是不定式符号,不是介词,所以其后接动词原形不接动名词
三、现在完成时概念过去发生或已经完成的动作对现在造成的影响或结果,或从过去已经开始,持续到现在的动作或状态时间状语recentlylatelysince…for…inthepastfewyearsetc.基本结构have/has+done否定形式have/has+not+done.
四、被动语态概念当主语为动作的承受者时,谓语要用被动语态基本机构“助动词be+及物动词的过去分词”构成含有情态动词的被动语态由“情态动词+be+及物动词的过去分词”构成助动词be有人称、数和时态的变化,其变化规则与be作为连系动词时完全一样
五、情态动词should后接动词原形
(1)表示“应该,应当”Youshouldhelpyourmotherwiththehousework.你应该帮你母亲做家务
(2)表示“可能,该=willprobably”Heshouldarrivesoon他可能很快就到了【达标练习】I.单项选择
1.We’retrying______theearth.A.tosaveB.savingC.savedD.besaved
2.Mygoodfriendbeesgoodat__________Englisheveryday.A.speakB.speakingC.speaksD.tospeak
3.I_________takedancelessonsbutIdon’tanymorenow.A.usedtoB.usedC.usingD.touseto
4.Itwas________thenicestriverintown.A.consideringB.consideredC.haveconsideredD.tobeconsidered
5.Whenitesto________theearthpeoplemaythinkthatbigthingsshouldbedone.A.saveB.besavedC.savedD.savingII.用所给单词的适当形式填空
1.—_______youever_______takepartinanenvironmentalproject—YesIhave.
2.I’vebeemuch_______goodatspeakingEnglish.
3.Theairhasbeereally_______pollute.
4.Everyoneshould_______playapartinkeepingthecityclean.
5.Iguesseveryoneinthiscityis_______trytoimprovetheenvironment.
6.Youcansaveelectricityby_______turnoffthelightswhenyouleavearoom.
7.Wecannotaffordto_______waitanylongerbeforetakingaction!
8.I_______helpwithaClean-UpDaylastyear.III.根据所给汉语完成英语句子
1.这条河过去很干净Theriver_____________________soclean.
2.我们应该帮助拯救鲨鱼Weshould______________thesharks.
3.然而,很多人忘记了拯救地球从小事做起Howevermanyforgetthatsavingtheearth______________smallthings.
4.在很多商店,你不得不付塑料袋的费用Insomestoresyounowhaveto______________plasticbags.
5.我们认为每个人都应该使用公共交通工具Wethinkthateveryoneshoulduse________________.
6.所有这些小的事情加起来变成能改善环境的大的事情Allthesesmallthingscan______________andbeebigthingsthatwould_______________________.
7.我们已经看到环境方面的很多变化We___________________________________intheenvironment.
8.空气污染变得越来越糟糕了Theairpollutionis____________________________________.
9.这条河被工厂污染了Theriver__________________byfactories.
10.人们应该多乘坐公共交通工具Peopleshould_________________________more.●TimeTimeagainIaskmyself(请写出这节课你的收获,完成下面的反思)【学后反思】九年级英语第13单元学案参考答案及解析第三课时【新知预习】
1.considered
2.reusable
3.afford
4.transportation
5.environment(解析略)【达标练习】I.
1.Atrytodosth.尽力干某事
2.Bbegoodatdoingsth擅长做某事
3.Ausedtodosth.过去常常干某事
4.B主语和谓语动词之间是被动关系
5.D介词后边跟动名词II.
1.Havetaken根据回答,确定用现在完成时态
2.bettermuch修饰比较级的考察
3.polluted被污染
4.play情态动词后加动词原形
5.trying现在进行时态的考察
6.turning介词后跟动词的现在分词形式
7.waitaffordtodo支付做某事的花费
8.helped由lastyear,可知用一般过去时III.
1.usedtobe
2.helpsave
3.beginswith
4.payfor
5.publictransportation
6.addup;improvetheenvironment
7.haveseenmanychanges
8.gettingworseandworse
9.ispolluted
10.takepublictransportation。