初中英语-第三课时sectionA grammer教学课件设计

Unit13We’retryingtosavetheearth!Period3SectionA(GrammarFocus-4c)Shouldwedrinksharkfinsoup?Nosalenokilling

Lead-inTheearthispolluted.Lead-inWe'retryingtosavetheearth.

典型例句

所用语法MakeupnewsentencesWearetryingtosavetheearth.Theriverusedtobesoclean.

Theairisbadlypolluted.

Noscientificstudieshaveshownthatsharkfinsaregoodforhealth.Weshouldhelpsavethesharks.现在进行时am/is/are＋doing语法总结读GrammarFocus表格内的句子，理解每个句子所用的时态、语态、情态动词及usedto结构。

usedto一般现在时被动语态：

am/is/are＋done现在完成时：has/have＋done情态动词＋do4a.Fillinblankswiththecorrectformsofverbs.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.HavetakenhelpedconsideredhadhadtookthinkcametryingwaitPeople_________thinkthatbigthings_______bedonetosavetheearth.Manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you______saveelectricitybyturningoffthelightswhenyouleavearoom.You_____alsousereusablebagsinsteadofplasticbags.Ithinkit’sagreatideathatyounow_______payforplasticbagsinsomestores,Andinsteadofdrivingtoschoolorwork,you______rideyourbikeorwalk.Ifit’sfar,you________takethebus.Allthesesmallthings________addupandbecamebigthingsthat_______improvetheenvironment.Let’stakeactionnow!4b.Fillinblankswiththepropermodalverbsinthebox.canwouldcouldhavetoshouldmustMay/mightmay/mighthavetomust

shouldcancouldshouldcancouldshouldcancouldhavetocan/couldcan/could

wouldcancould①②③usepublictransportation2.takereusablebagswhenwegoshopping3.turnoffthelightswhenweleavetheroom4.growmoreplants5.reducetheuseofairconditionsinsummer…….

4c.Makealistofthingsthatyoucandotohelptheenvironmentanddiscuss.Discussionwriteanarticletoshowinwhatwaywestudentscanprotecttheenvironment.It’sourdutytoprotecttheearth.IalwaysturnoffthelightswhenIleavearoom________________________________________________________________________________________________