八年级英语上册 Unit 9 Can you come to my party Section A 3课件 （新版）人教新目标版.ppt

unit9canyoucometomyparty sectionagrammarfocus 3c objectives tolearntouse wouldyouliketo tomakeinvitationstousethefollowingstructuretotalkaboutobligations imighthaveto must revision hey nick canyoucometomyhouseonsaturday oh sam irememberwewentbikeridinglastfallwhen canyouplaysoccertomorrowafternoon sure i dloveto i mafraidnot ihavetheflu cankategofishingtomorrowmorning no shecan t shemustprepareforthemathexam canlindahangoutonsaturdayafternoon no she snotavailable shehastohelphermom cannickandpetergohikingtomorrow no theyarenotfree theymighthavetovisittheirgrandparents a canhecometomyparty b sure he dloveto hecan t hehasto pairwork grammarfocus 3acompletetheanswerswithmightandoneofthephrasesinthebox 1 a whatareyougoingtodoonsaturday b i mnotsure imight 2 a whatareyouplanningtodoafterschool b idon tknow 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 i mafraidnot ihavetoomuch 3 inviting can hangoutwithustonight reason must refusing 4 inviting wouldliketo cometomybirthdayparty accepting homeworktodo canyouhangoutwithustonight wouldyouliketocometomybirthdayparty no ican t imustfinishmyhomework sure i dloveto 3cwritedowneverythingyouhavetodonextweek chooseadayandtimetohaveaparty theninviteclassmatestoyourparty a canyoucometomyparty b whenisit a nextweek onthursdaynight b i msorry 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 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 1 表示 能 会 指脑力或体力方面的 能力 如 icanspeakenglish 我会讲英语 jimcanswimbutican t 吉姆会游泳 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 hanmeican tbeintheclassroom 韩梅不可能在教室里 canhecomeheretoday please 请问他今天能到这里来吗 3 表示 可以 常用于口语中 指许可或请求做某事 如 canihaveacupoftea please 请问我可以喝一杯茶吗 youcangoout 你可以出去了 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 wehavetoleavenow 我们不得不现在就离开 hehastoworkonsunday 他不得不在周日工作 ihadtodomyhomeworklastsunday 上周日我不得不做作业 2 haveto的否定句句型 主语 don t didn t doesn t won t haveto 动词原形youdon thavetowalksofast 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 hedidn t haveto 不 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 i dloveto 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 ican t 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 thepolicemansaysyoucan tparkhere 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 youmustn t no you dbetternot i mafraidnot i msorry i dratheryoudidn t canigooutandplay mum yes certainly youcan no youcan t canyouhelpmewiththisbag withpleasure sorry ican t 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 thisnewscan tbetrue 不可能 couldn t 疑问句canthisnewsbetrue could maythisnewsbetrue 4 can还可表示 能力 能够 youcanswim can tyou no ican t ican tpromiseanything buti lldowhatican 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 icouldn tfindhertelephonenumber 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 there ssomeoneatthedoor itcould might may begeorge 肯定句 itcouldn t can t 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 idon tsupposeyoucould might 3 can beabletocan am is areableto shall willbeableto noonecandoit 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 buthewasabletocatchtheeighto clocktrain buthemanagedtocatch buthesucceededincatching but mr smithcouldn t wasn tabletoseeyoubecausehe sgotabadcold 3 beableto还有完成式和非谓语形式 i msorryihaven tbeenabletoansweryourletter i msorryfornotbeingabletoansweryourletter 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 idon thavetostayathometoday 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 hecan tgowithus 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 idon tlikethistvset imustbuyanewone thistvsetdoesn twork wehavetobuyanewone now youmustgetupatfivetomorrow we will havetogetupearlytomorrow we regoingtodevon future ihadtoleaveearlybecauseiwasn tfeelingwell 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 i dlove liketo i msorry ican t ihaveto i mv ing task总结 exercise 一 选择正确的词thankyoufor ask asking butican tgotothemovieswithyou 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 i ms ican t ihavetoomuchh thisweekend andi mnotf welltoday a that stoob what sthematter ovies orry omework ad eeling b i mnotsure maybeihaveac asi mfeelingalittlecold a ithinkyou db gotothed b ialsot so a maybei maskingyoutocomeanothertime 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 with4 jimplaysoccerwithhisfriendthisweekend becauseheisverybusy a canb cansc cann td can t a c b d 5 it soctoberthe14th a whenistodayb what stodayc whattimeistodayd whatdayistoday6 heiswithhisfatherthewholeday a fish