Unit9SectionA-2.ppt

,英语教学课件系列,Go,for,it!,八年级(上),Unit9Canyoucometomyparty?,SectionAGrammarFocus,Yes,shecan.,Canshecometotheparty?,Canshe,No,hecant.Hehastostudy.,Canhegotothebaseballgame?,Canhe,Cantheycometotheparty？,No，theycant.Theyhavetostudyforthemathtest.,Canthey,GrammarFocus,3aCompletetheanswerswithmightandoneofthephrasesinthebox.1.A:WhatareyougoingtodoonSaturday?B:Imnotsure.Imight_2.A:Whatareyouplanningtodoafterschool?B:Idontknow._,watchTVontheweekendmycousinvisitgrandparentspracticetheviolin,practicetheviolin.,ImightwatchTV.,3.A:Whenwillyoufinishthesciencehomework?B:_4.A:Whoareyougoingtothemovieswith?B:_5.A:AreyoufreetocometomyplaceonSaturday?B:_,Ontheweekend,Mycousin,No.Imightvisitgrandparents.,3bCompletethesentencesbelow.Usethewordsinbracketstohelpyou.Inviting:(can/playtennis)_Accepting:_2.Inviting:(wouldliketo/gotothemovies)Reason:(mighthaveto)_Refusing:,Canyoucometoplaytennis?,Sure,thatsoundsgreat.,wouldyouliketogotothemovies?,Imafraidnot.Ihavetoomuch,_3.Inviting:(can/hangoutwithustonight)Reason:(must)_Refusing:_4.Inviting:(wouldliketo/cometomybirthdayparty)_Accepting:_,homeworktodo.,Canyouhangoutwithustonight?,Wouldyouliketocometomybirthdayparty?,No,Icant.Imustfinishmyhomework.,Sure,Idloveto.,3cWritedowneverythingyouhavetodonextweek.Chooseadayandtimetohaveaparty.Theninviteclassmatestoyourparty.,A:Canyoucometomyparty?B:Whenisit?A:Nextweek,onThursdaynight.B:Imsorry.Ihavetostudyforamathtest.,Doyouknowweek?,colorfulweekendactivities,gofishing,goshopping,goskateboarding,playbasketball,gotothecinema,climbmountains,surftheInternet,gotoaparty,gototheconcert,studyforatest,gotothedoctor,haveapianolesson,visithisaunt,gotoabaseballgame/havebaseballtraining,WeekendActivities,Whatdoyouusuallydoonweekends?,Whatactivitiesdoyoudoonweekends?,haveto不得不,A:Whatdoyouhavetodothisweekend?B:Ihaveto,Whatweekendactivitiesdoyoudo?,studyforatest,gotothedoctor,haveadancinglesson,情态动词主要有：may/might,can/could,must,haveto,shall/should,will/would,oughtto,need,dare,usedto。,Grammarfocus,现在我们来着重学习情态动词can以及haveto的用法。其特征主要有：,1.不能独立作谓语，只能和动词原形一起构成谓语，表示说话人的语气和情态。2.没有人称和数的变化。(haveto除外)3.否定形式：在其之后加not(haveto除外)。疑问形式：情态动词提到主语之前(haveto除外)。,can为情态动词,在本单元中表示请求,用于发出邀请，后跟动词原形。当同意接受对方的邀请时,常用Sure,Idloveto./Certainly./Ofcourse.等来回答；若不接受,常用Sorry等来有礼貌地拒绝,一般情况下需要说明不能接受邀请的原因以表示歉意。,Canyoucometomybirthdaypartytomorrow？明天你来参加我的生日聚会，好吗？Sorry,Icant.Iamgoingtovisitmygrandpa.很抱歉，我来不了，我要去看我爷爷。,1.can/may都可表示“许可”。may用于较正式、客气的场合，而can比较随便（口语）。Youmay/cansmokehere.Borrowersmaynottakeoutofthelibrarymorethantwobooksatatime.Thepolicemansaysyoucantparkhere.,(2)May/CanI/we?表示征询对方许可。Canyou?表示请求。MayIuseyourphone?Yes,youmay./Yes,please./No,youmaynot./No,youmustnt./No,youdbetternot./Imafraidnot.,/Imsorry.Idratheryoudidnt.CanIgooutandplay,Mum?Yes/Certainly,youcan./No,youcant.Canyouhelpmewiththisbag?Withpleasure./Sorry,Icant.(3)都可表示“可能性”肯定句,Mr.Reedlookspale.Hemaybeill.(事实上的可能).Mr.Readisinpoorhealth.Hecanbeillatanytime.(逻辑、理论上的可能)Thisnewsmaybetrue.(=might/could)(事实上的可能)WangWeicanbereallystubborn.(有时或偶然可能会)(=could),否定句Thisnewsmaynotbetrue.(也许不,=mightnot)Thisnewscantbetrue.(不可能,=couldnt)疑问句Canthisnewsbetrue?(=Could)Maythisnewsbetrue?,(4)can还可表示“能力”、“能够”Youcanswim,cantyou?No,Icant.Icantpromiseanything,butIlldowhatIcan.TicketscanbeboughtfromtheTouristInformationCenter.,2.might/could分别为may和can的一般过去时，分别表示过去的“许可”、“可能”和“能力”、“能够”等。Thechildrenaskedwhethertheycould/mightgoforaswim.(过去许可)Iwasafraiditmightrainthatafternoon.(过去可能)Heaskedifthenewscouldbetrue.(过去可能)(Canthenewsbetrue?),Shesaidhecouldspeakseverallanguages.(过去能力)Icouldntfindhertelephonenumber.(过去能够)(2)都可表示现在或将来的“可能性”。语气没有may肯定。Theressomeoneatthedoor.Itcould/might(=may)beGeorge.(肯定句),/Itcouldnt(=cant)beGeorge.(否定句)/Could(=Can)itbeGeorge?(疑问句)Accordingtotheradioitcould/might/mayraintomorrow.Lightningcould(=can)bedangerous.(3)Might/CouldI/we?Couldyou?,表示更委婉、更客气的请求。Might/CouldIaskyouonemorequestion?Yes,ofcourseyoumay/might/can/could.Couldyouhelpmewiththeseboxes?OfcourseIcan./Withpleasure.,有时在陈述句中也表示更委婉、更客气的请求或邀请：IwonderifIcould/mightleavenow.Idontsupposeyoucould/might.,3.can/beabletocan=am/is/areableto=shall/willbeabletoNoonecandoit.=Nooneisabletodoit.Canyoucometonight?=Willyoubeabletocometonight?,(2)could表示过去的技能、本能;was/wereableto表示过去某一具体场合经过努力而做成某事。IcouldswimwhenIwassix.Hestartedlate,buthewasabletocatchtheeightoclocktrain.=buthemanagedtocatch=buthesucceededincatching,But:Mr.Smithcouldnt/wasntabletoseeyoubecausehesgotabadcold.(3)beableto还有完成式和非谓语形式。ImsorryIhaventbeenabletoansweryourletter.=Imsorryfornotbeingabletoansweryourletter.Tobeabletorunisveryimportantforafootballer.,4.haveto的意思是“必须、不得不”,往往强调由于客观原因而必须做某事。haveto后接动词原形；haveto有人称、数和时态的变化,其第三人称单数形式为hasto,其疑问形式和否定形式要借助于助动词do或does来完成。例如：,Wehavetolookafteroursisterathome.我们不得不在家照顾我们的妹妹。Doeshehavetogetupearlytomorrowmorning?明天早上他必须早起吗？Idonthavetostayathometoday.今天我不必呆在家里。,情态动词“haveto”与其他的情态动词如“can”,“may”“must”和“should”不同。1)这4个情态动词没有人称的变化,而haveto有,它的第三人称单数为“hasto”如：Heshouldstudyhard.Hehastostudyhard.,2)这4个情态动词在一般疑问句中将它们放在句首,在否定句中直接在他们后边加not即可。我们以can为例:-Canhegowithus?他能和我们一起去吗？-Hecantgowithus.他不能和我们一起去。而“haveto”要加助动词do,does或did才可能完成其疑问句、否定句。,5.must/havetomust表示主观“必须”；haveto表示客观客观需要，即“不得不”。IdontlikethisTVset.Imustbuyanewone.ThisTVsetdoesntwork.Wehavetobuyanewone.(now),Youmustgetupatfivetomorrow.We(will)havetogetupearlytomorrowweregoingtoDevon.(future)IhadtoleaveearlybecauseIwasntfeelingwell.Shesaidshemust/hadtoseethemanager.(past),表示邀请的句型:(你能来参加我的聚会吗?),Canyoucometomyparty?,Couldyoucometomyparty?,Wouldyouliketocometomyparty?,接受邀请:拒绝邀请:,Sure,Idlove/liketo.,Imsorry,Icant.Ihaveto/ImV-ing,Task总结,Exercise,一、选择正确的词Thankyoufor(ask/asking),butIcantgotothemovieswithyou.Paulhastostudy(at/for)themathtesttonight.Mysisterhastoo(much/many)homeworktodo.,asking,for,much,4.Canyoucometomyparty(at/on)Saturdaynight?5.Sheinvitesme(watch/towatch)thebasketballmatchthedayaftertomorrow.6.Ilikeplaying(piano/thepiano).,on,towatch,thepiano,二.对话填空。每空一词，单词的首字母已给出。A:Hey,XiaoWang,canyougotothem_onSaturday?B:Ims_,Icant.Ihavetoomuchh_thisweekend.AndImnotf_welltoday.A:Thatstoob_.Whatsthematter?,ovies,orry,omework,ad,eeling,B:Imnotsure.MaybeIhaveac_,asImfeelingalittlecold.A:Ithinkyoudb_gotothed_.B:Ialsot_so.A:MaybeImaskingyoutocomeanothertime.B:Sure.T_forasking.,old,etter,octor,hink,hanks,三、选择题1.CanyouplaytenniswithonSaturday?A.usB.weC.ourD.ours2.Henryhishomeworkthisafternoon.A.havetodoB.havetodoingC.hastodoD.hastodoing3.Tonyisplayingtennistheschoolteam.A.onB.inC.toD.wi