八年级英语上册Unit9CanyouetomypartySectionA3课件（完整版）4

SectionAGrammarFocus-3cObjectivesTolearntouse“Wouldyouliketo…?”tomakeinvitationsTousethefollowingstructuretotalkaboutobligations:Imighthaveto/must…RevisionOh,Sam!Irememberwewentbikeridinglastfallwhen…Canyouplaysoccertomorrowafternoon?Sure.I’dloveto.I’mafraidnot.Ihavetheflu.CanKategofishingtomorrowmorning?No,shecan’t.Shemustprepareforthemathexam.CanLindahangoutonSaturdayafternoon?No,she’snotavailable.Shehastohelphermom.CanNickandPetergohikingtomorrow?No,theyarenotfree.Theymighthavetovisittheirgrandparents.PairworkCanyoucometomypartyonSaturday?Sure,I’dloveto.Sorry,Imuststudyforamathtest.Canyougotothemoviestomorrownight?Sure.Thatsoundsgreat.I’mafraidnot.Ihavetheflu.Canhegototheparty?No,hecan’t.Hehastohelphisparents.Canshegotothebaseballgame?No.she’snotavailable.Shemustgotothedoctor.Cantheygotothemovies?No,they’renotfree.Theymighthavetomeettheirfriends.GrammarFocus3aCompletetheanswerswithmightandoneofthephrasesinthebox.1.A:WhatareyougoingtodoonSaturday?B:I’mnotsure.Imight______________

2.A:Whatareyouplanningtodoafterschool?B:Idon’tknow.

____________________

watchTVontheweekendmycousinvisitgrandparentspracticetheviolinpracticetheviolin.ImightwatchTV.OntheweekendMycousinNo.Imightvisitgrandparents.3bCompletethesentencesbelow.Usethewordsinbracketstohelpyou.Inviting:(can/playtennis)

________________________________________________Accepting:________________________

2.Inviting:(wouldliketo/gotothemovies)Reason:

(mighthaveto)______________________________Refusing:_____________________________Sure,thatsoundsgreat.wouldyouliketogotothemovies?I’mafraidnot.Ihavetoomuchhomeworktodo.Canyouhangoutwithustonight?No,Ican’t.Imustfinishmyhomework.Sure,I’dloveto.3cWritedowneverythingyouhavetodonextweek.Chooseadayandtimetohaveaparty.Theninviteclassmatestoyourparty.

星期一Monday

星期二Tuesday

星期三Wednesday

星期四Thursday

星期五Friday

星期六Saturday

星期日Sunday

Doyouknowweek?colorfulweekendactivitiesgofishinggoshopping

goskateboardingplaybasketballgotothecinemaclimbmountains

surftheInternet

gotoapartygototheconcertstudyforatestgotothedoctorhaveapianolessonvisithisauntgotoabaseballgame/havebaseballtrainingWeekendActivitiesWhatdoyouusuallydoonweekends?Whatactivitiesdoyoudoonweekends?

haveto…不得不A:Whatdoyouhavetodothisweekend?

B:Ihaveto…Whatweekendactivitiesdoyoudo?studyforatestgotothedoctorhaveadancinglesson情态动词主要有：may/might,can/could,must,haveto,shall/should,will/would,oughtto,need,dare,usedtoGrammarfocus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。

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Didhehave

toaskthequestion?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。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。①—MayIuseyourphone?—Yes,youmay./Yes,please./No,youmaynot.

/No,youmustn’t./No,you’dbetternot./I’mafraidnot.

/I’msorry.I’dratheryoudidn’t.②—

CanIgooutandplay,Mum?

—Yes/Certainly,youcan./No,youcan’t.③—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。①—There’ssomeoneatthedoor.

—Itcould/might(=may)beGeorge.(肯定句)

/Itcouldn’t(=can’t)beGeorge.(否定句)/Could(=Can)itbeGeorge?(疑问句)②Accordingtotheradioitcould/might/mayraintomorrow.③Lightningcould(=can)bedangerous.(3)Might/CouldI/we…?Couldyou…?

表示更委婉、更客气的请求。①—Might/CouldIaskyouonemorequestion?

—Yes,ofcourseyoumay/might/can/could.②—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.(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。①IcouldswimwhenIwassix.②Hestartedlate,buthewasabletocatchtheeighto’clocktrain.=…buthemanagedtocatch…=…buthesucceededincatching…But:

③Mr.Smithcouldn’t/wasn’tabletoseeyoubecausehe’sgotabadcold.(3)beableto还有完成式和非谓语形式。①I’msorryIhaven’tbeenabletoansweryourletter.=I’msorryfornotbeingabletoansweryourletter.②Tobeabletorunisveryimportantforafootballer.

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?)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.askingformuchontowatchthepiano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?oviesorryomeworkadeelingoldetteroctorhinkhanks三、选择题1.Canyouplaytenniswith

onSaturday?A.usB.weC.ourD.ours2.Henry

hishomeworkthisafternoon.A.havetodoB.havetodoingC.hastodoD.hastodoing3.Tonyisplayingtennis

theschoolteam.A.onB.inC.toD.with4.Jim

playsoccerwithhisfriendthisweekend,becauseheisverybusy.A.canB.cansC.cann’tD.can’tACBD5.-

?-It’sOctoberthe14th.A.Whenistod