九年级英语全册 Unit 13 We’re trying to save the earth（第2课时）课件 （新版）人教新目标版.ppt

unit13we retryingtosavetheearth第二课时 focusongrammar 情境引入leading in 判断下列句子中使用了什么时态及情态动词 1 wearetryingtosavetheearth 2 theriverusedtobesoclean 3 itwasconsideredthenicestriverinthetown 4 theairhasbecomereallypolluted 5 weshouldhelpsavewthesharks answers 1 现在进行时2 usedto3 一般过去时的被动语态4 现在完成时5 should 活动探究 fillintheblanks youcandiscusswithyourparnters answers 延伸拓展 fillinblankswiththecorrectformsofverbs interviewer youever take partinanenvironmentalproject ken yes ihave i help withaclean updaylastyear itwas consider thebiggestclean upprojectthiscity ever have interviewer howmanypeople take part ken i think morethan1 000people come tohelpout interviewer that sfantastic iguesseveryoneinthiscityis try toimprovetheenvironment ken yes evertoneshould play apartinkeepingthecityclean possibleanswers havetaken helped considered hadhad took think came trying play fillinblankswithpropermodalverbs canwouldcouldhavetoshouldmight maymust whenitcomestosavingtheearth people thinkthatbigthings bedone however manyforgetthatsavingtheearthbeginswithsmallthings forexample you saveelectricitybyturningoffthelightswhenyouleavearoom you alsousepaperorreusablebagsinsteadofplasticbags insomestores younow payforplasticbags ithinkthisisagreatidea andinsteadofdrivingtoschoolorwork you rideyourbikeorwalk ifit sfar you takethebus allthesesmallthings addupandbecamebigthingsthat improvetheenvironment wecan taffordtowaitanylongerbeforetakingaction possibleanswers may can t can could haveto may might should would must 随堂练习 fillinblanksusingproperformsofgivenwords 1 i llgivethebooktohimassoonashe back come 2 thebaby cryingyet stop 3 idon tknowwhethermother metobeijingnextmonth take 4 she onhercoatandwentout put comes have stopped willtake put 5 whataretheydoing they readyforthesportsmeeting get 6 theboyaskedhismother himgoandplaybasketball let 7 i msorrytokeepyou foralongtime wait 8 it take himhalfanhour finish hishomeworkyesterday aregetting tolet waiting took tofinish 9 ifit aninterestingfilm we llseeittomorrow be 10 theyusually do theirhomeworkaftersupper 11 listen who sing inthenextroomnow 12 be yourparentsinshanghailastyear is do issinging were 13 mr yu teach usmathssince1982 14 theywillhaveatrip 旅行 tothegreatwallifit notrain tomorrow 15 limingoften listen totheradiointhemorning havetaught doesn train listens choosethebestanswers 1 mayistopmycarhere no you a can tb mustn tc needn td don thaveto a 2 mustwecleanthehousenow no you needn tb maynotc mustn td can t3 man diewithoutwater a willb canc needd shall a a 4 you returnthebooknow youcankeepitnextweekifyoulike can tb mustn tc needn td maynot5 johnny you playwiththeknife you hurtyourself won t can tb mustn t mayc shouldn t mustd can