人教版八年级上册英语优质课件 Unit 9 Section A Grammar Focus-3c

Unit9Canyoucometomyparty?,SectionA3a-3c,Tolearntouse“Wouldyouliketo?”tomakeinvitationsTousethefollowingstructuretotalkaboutobligations:Imighthaveto/must,Objectives,Hey,Anna,canyoucometomybirthdaypartyonSaturday?,Oh,Sam!Irememberwewentbikeridinglastfallwhen,Review,Canyouplaychesswithmetomorrowafternoon?,Sure.Idloveto.,Imafraidnot.Ihavetheflu.,CanLilytakeawalkwithus?,No,shecant.Shemustpreparefortheexam.,GrammarFocus,情态动词主要有：may/might,can/could,must,haveto,shall/should,will/would,oughtto,need,dare,usedto,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：,情态动词can的基本用法情态动词can有一定的词义，但不能独立存在，它必须与动词原形一起构成谓语。情态动词can没有人称和数的变化。其具体用法如下:表示“能、会”指脑力或体力方面的“能力”。如:IcanspeakJapanese.我会讲日语。FrankcanswimbutIcant.佛兰克会游泳,但我不会。,2.表示“可能”，常用于否定句或疑问句中，指某种可能性。例如：Mycousincantbeinthiscity.HeisinKoreanow.我堂兄不可能在这个城市里。他在韩国呢。Canhecometoourclubtoday,please?请问他今天能来我们俱乐部吗？3.表示“可以”，常用于口语中，指许可或请求做某事CanIaskyouaquestion?我可以问你一个问题吗？Youcanbringsomethingtoeat.你可以带些吃的。,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。,can/may(1)都可表示“许可”。may用于较正式场合，can比较口语化。Youmay/cansmokehere.Borrowersmaynottakeoutofthelibrarymorethantwobooksatatime.Thepolicemansaysyoucantparkhere.(2)May/CanI/we?表示征询对方许可。Canyou?表请求。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”Mr.Reedlookspale.Hemaybeill.Mr.Readisinpoorhealth.Hecanbeillatanytime.Thisnewsmaybetrue.(=might/could)WangWeicanbereallystubborn.,Mr.Reedlookspale.Hemaybeill.Mr.Readisinpoorhealth.Hecanbeillatanytime.Thisnewsmaybetrue.(=might/could)WangWeicanbereallystubborn.,(4)can还可表示“能力”、“能够”Youcanswim,cantyou?No,Icant.Icantpromiseanything,butIlldowhatIcan.TicketscanbeboughtfromtheTouristInformationCenter.,haveto的用法1.have(has)to+动词原形have(has)to后面要用动词原形。当主语为第三人称单数时用hasto，当句子是过去时用hadto。Wehavetogohomenow.我们不得不现在就回家。HehastoworkonSunday.他不得不在周日工作。IhadtodomuchhouseworklastSunday.上周日我不得不做很多作业。,2.haveto的否定句句型：主语+dont/didnt/doesntwont+haveto+动词原形Youdonthavetowalksofast.你不必走那么快。Hewillnothavetobuyanewcoatnextyear.明年他没必要买新外衣了。3.haveto的疑问句句型：Do/Does/Did/Will+主语+haveto+动词原形,Didhehavetoaskthequestion?他非要问那个问题吗？Yes,hedid.是的。No,hedidnt(haveto).不。,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)。,3.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。,4.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.,Youmustgetupatfivetomorrow.We(will)havetogetupearlytomorrow.IhadtoleaveearlybecauseIwasntfeelingwell.Shesaidshemust/hadtoseethemanager.,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,小结,1.A:WhatareyougoingtodoonSaturday?B:Imnotsure.Imight_2.A:Whatareyouplanningtodoafterschool?B:Idontknow._,watchTVontheweekendmycousinvisitgrandparentspracticetheviolin,practicetheviolin.,ImightwatchTV.,Completetheanswerswithmightandoneofthephrasesinthebox.,3a,3.A:Whenwillyoufinishthesciencehomework?B:_4.A:Whoareyougoingtothemovieswith?B:_5.A:AreyoufreetocometomyplaceonSaturday?B:_,Ontheweekend.,Mycousin.,No.Imightvisitgrandparents.,1.Inviting:(can/playtennis)_Accepting:_,Canyoucometoplaytennis?,Sure,thatsoundsgreat.,Completethesentencesbelow.Usethewordsinbracketstohelpyou.,3b,2.Inviting:(wouldliketo/gotothemovies)Reason:(mighthaveto)_Refusing:_,Wouldyouliketogotothemovies?,Imafraidnot.Ihavetoomuch,homeworktodo.,3.Inviting:(can/hangoutwithustonight)Reason:(must)_Refusing:_,Canyouhangoutwithustonight?,No,Icant.Imustfinishmyhomework.,4.Inviting:(wouldliketo/cometomybirthdayparty)_Accepting:_,Wouldyouliketocometomybirthdayparty?,Sure,Idloveto.,Writedowneverythingyouhavetodonextweek.Chooseadayandtimetohaveaparty.Theninviteclassmatestoyourparty.,A:Canyoucometomyparty?B:Whenisit?A:Nextweek,onThursdaynight.B:Imsorry.Ihavetostudyforamathtest.,3c,Whatdoyouusuallydoonweekends?,Whatactivitiesdoyoudoonweekends?,haveto不得不,A:Whatdoyouhavetodothisweekend?B:Ihaveto,Whatweekendactivitiesdoyoudo?,Haveatalkaboutyourweekend,colorfulweekendactivities,goshopping,goskateboarding,playsoccer,gotothecinema,Haveatalk,colorfulweekendactivities,playthepiano,climbmountains,gotoaparty,surftheInternet,1.Jimplaysoccerwithhisfriendthisweekend,becauseheisverybusy.A.canB.cansC.canntD.cant2.Henryhishomeworkthisafternoon.A.havetodoB.havetodoingC.hastodoD.hastodoing3.?ItsOctoberthe14th.A.WhenistodayB.WhatstodayC.WhattimeistodayD.Whatdayistoday,D,C,I.选择填空。,D,Exercises,1.星期六你能来我的聚会吗？_you_tomypartyonSaturday?2.当然，我乐意去。Sure,_.3.对不起，我必须为数学考试而学习。Sorry,I_amathtest.4.明天晚上你能去看电影吗？_you_tothemovies_night?,Idloveto,Cancome,muststudyfor,Cango,II.根据课本内容,完成下列句子。,tomorrow,5.当然可以，听起来很棒。_,that_.6.恐怕不行，我得了流感。Im_not.Ihavethe_.7.他能参加聚会吗？_he_totheparty?8.不能，他得帮助他的父母。No,he_.He_tohelphisparents.9.她能参加棒球比赛吗？_shegotothebaseball_?,Suresoundsgreat,afraidflu,Cangame,Cango,canthas,10.不，她没有空。她必须去看医生。No,shes_.She_tothe_.11.他们能去看电影吗？_they_tothe_?12.不，他们没有空。他们可能必须去见朋友。No,theyrenot_.They_meettheir_.,notavailablemustgo,doctor,friends,Cangomovies,freemighthaveto,（2018湖北孝感）Couldyoucomeandhelpwithourbooksale,Alice?.A.Nevermind.B.Ithinkso.C.Sure,IdlovetoD.Haveagoodtime,中考链接,【解析】句意:爱丽丝，你