Protect-the-Earth省公开课一等奖新名师优质课比赛一等奖课件.pptx

Unit 7Protect the Earth第二课时第1页IntroduceI can use _ to _.We should _.We should not _.第2页Words“use+名词+to+动词原形”意思是用某物做某种东西。to后接动词原形。惯用短语：protecttheearth保护地球eg：Shealwaysusestoomuchwatertocleanthings.她总是用太多水来清洗东西。小练习：Inthepast,weoften_(use)woodtomakefire.useduse to第3页 Words(1)usedto表示过去经常做某事。(2)beusedto+doing：“习惯于”,to是介词,后需加名词或动名词。eg：Iusedtoplayfootballafterschool。过去我经常在放学后踢球。Use to扩展eg：Sarahisusedtotakingawalk。Sarah习惯于散步了。第4页WordsShould“应该”,后接动词原形,是较委婉地提议某人做某事。当表示较委婉拒绝某人做某事时：用其否定形式“shouldnt+动词原形”。eg：Weshouldfinishourhomeworkeveryday.我们天天都应该完成家庭作业。小练习：（）Waterisuseful,we_reuseandsaveit.A.shouldB.shouldntC.willAshould/d/第5页DialoguesGroupwork：Writemoresentenceswithlearnedsentencesandreportinclass.第6页Expand(1)(表示能力)能;会 can作情态动词使用方法eg：Shecandrive，butshecantrideabicycle.他能开车,不过不会骑自行车。(2)(表示可能、许可)能够;能够eg：Youcantparkyourcarinthisstreet.你不能够在这条街上停车。第7页Expandcould/beableto区分could表示“原来具备某种能力,现在没有这种能力了”。但was/wereableto则表示过去成功地做成了某事。eg：Icouldswimallthewayacrossthelake，butIcantnow.我原来能游过这个湖,但现在不能了。Thefirespreadthroughthehotelveryquicklybuteveryonewasabletogetout.大火很快蔓延了整个旅馆,但全体人员都脱离了危险。第8页SummaryUsetoshould第9页Exercise()1.Theoilis.A.useB.reuseC.useful()2.Tokeeptheairclean,donttoworkeveryday.A.walkB.runC.driveCC第10页Exercise()3.Weoftenusetocleanthings.A.coalB.oilC.water()4.Theresomepaperonthedesk.A.hasB.isC.areCB第11页Exercise()5.Peoplecutdowntreeseveryday.A.lotofB.manyC.much()6.Wecanusepaperatoyplane.A.makeB.makingC.tomakeBC第12页Exercise()7.Thereareplasticbagsontheground.A.toomuchB.toomanyC.somuch()8.ToprotecttheEarth,weshoulduse_.A.plasticbagsB.plasticbottleC.glassbottleBC第13页HomeworkCollectmoreexamplesofenvironmentaldamage,writeasmallreport，reportshowingintheclass.第14页