人教版八年级上英语Unit 9第2课时（Section A Grammar Focus-3c）

Unit9Canyoucometomyparty?R·八年级上册SectionAGrammarFocus-3cNewwordsrefusev.邀请v.接受v.拒绝/ɪn'vaɪt//ək'sept//rɪ'fju:z/inviteacceptReview1.为考试而做准备2.看医生3.上钢琴课4.帮助我的父母亲5.拜访我的姑姑prepareforanexamgotothedoctorhaveapianolessonhelpmyparentsvisitmyaunt

PairworkA:Canhe/she/theycometo…?B:No,he/she/theycan’t.He/She/They(might)have(has)to/must…CanyoucometomypartyonSaturday?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.GrammarFocusHowtoacceptaninvitation.Yes,I’dlove/liketo.Certainly,I’dlove/liketo.Sure,I’dlove/liketo.Thanksforyourinvitation.Thanksforaskingme.SummaryHowtodeclineaninvitation.I’msorry,Ican’t.Ihaveto…I’dloveto,butIhaveto…Sorry,Ican’t.I’mgoingto...Thanksforyourinvitation.Thankyouforaskingme.3aCompletetheanswerswithmightandoneofthephrasesinthebox.watchTVontheweekendmycousinVisitmygrandparentspracticetheviolin1.A:WhatareyougoingtodoonSaturday?B:I’mnotsure.Imight_____________________

2.A:Whatareyouplanningtodoafterschool?B:Idon’tknow._____________________practicetheviolin.ImightwatchTV.3.A:Whenwillyoufinishthesciencehomework?B:________________________________________4.A:Whoareyougoingtothemovieswith?B:____________________________________

5.A:AreyoufreetocometomyplaceonSaturday?B:

_______________________________________

Idon’tknow.Imightfinishitontheweekend.I’mnotsure.Imightgowithmycousin.I’mnotsure.No.Imightvisitgrandparents.3bCompletethesentencesbelow.Usethewordsinbracketstohelpyou.1.Inviting:__________________________(can/playtennis)

Accepting:________________________________2.Inviting:__________________________________(wouldliketo/gotothemovies)Refusing:________________________________Reason:__________________________________(mighthaveto)Canyoucometoplaytennis?Sure,thatsoundsgreat.Wouldyouliketo

gotothemovies?I’mafraidnot.Imighthavetodomyhomework.3.Inviting:__________________________________(can/hangoutwithustonight)Refusing:_________________________________Reason:__________________________________(must)4.Inviting:__________________________________

__________________________________(wouldliketo/cometomybirthdayparty)Accepting:________________________________Canyouhangoutwithustonight?Wouldyouliketocometomy

birthdayparty?No,Ican’t.Sure,I’dloveto.Imustpracticetheviolintonight.3cWritedowneverythingyouhavetodonextweek.Chooseadayandtimetohaveaparty.Theninviteclassmatestoyourparty.A:Canyoucometomyparty?B:Whenisit?A:Nextweek,onThursdaynight.B:I’msorry.Ihavetostudyforamathtest.Monday

TuesdayWednesdayThursdayFridaySaturdaySunday

MON.TUE.WED.THUR.FRI.SAT.SUN.Languagepoints情态动词Can的用法Can是一个常见的情态动词，表示说话人的语气或情态，基本意思是“能；会”。它没有人称和数的变化，在句子中不能单独作谓语，其后必须跟实义动词原形。can的否定形式为cannot/can’t/cannot；过去式为could，其过去否定形式为couldnot/couldn’t。情态动词Can有以下常见用法：1.表示能力情态动词can一般指体力、知识、技能等方面的能力，即“能够；会”。例：我哥哥会游泳，但是我不会。MybrothercanswimbutIcan’t.2.表示许可多用在口语中，表示请求或允许，意为“可以；能够”等。用于疑问句中用来提出要求，用于否定句中表示不允许。例：我可以用你的钢笔吗？CanIuseyourpen?3.表示推测情态动词can表示推测时，常用于否定句或疑问句，意为“（不）可能”。用于肯定句中表示理论上的可能性，意为“有时会”。例：这里的春天有时可能会非常冷。Itcanbeverycoldhereinspring.4.表示邀请情态动词can除了表示能力、许可或猜测之外，还可以表示邀请；could较can更礼貌、委婉。表示邀请时的用法如下：（1）当用情态动词can发出邀请时，用一般疑问句Can+主语+动词原形+其他？例：你能来参加我的聚会吗？Canyoucometomyparty?（2）当用情态动词can发出邀请时，其回答分

为两类。一类表示接受邀请，另一类表示

拒绝邀请。Sure,I’dloveto.Sorry.I’mnotavailable.I’dloveto,butI’mafraidIcan’t.例：当然，我很乐意。

Sure,Ithinkhe/she/theywill.当然，我想他/她/他们会的。对不起，我没有空。我很乐意去，但是恐怕我不能去。情态动词有：may/might,can/could,must,haveto,shall/should,will/would,oughtto,need,dare,usedto

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)。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/cansithere.Thepolicemansaysyoucan’tparkhere.1.can/may(2)May/CanI/we…?表示征询对方许可。Canyou…?表示请求。—MayIuseyourphone?—Yes,youcan./Yes,please.No,youcan’t./No,youmustn’t.MrReadlookspale.Hemaybeill.(事实上的可能)MrReadisinpoorhealth.Hecanbeillatanytime.(逻辑、理论上的可能)(3)都可表示“可能性”肯定句否定句Thisnewsmaynot

betrue.(也许不=mightnot)Thisnewscan’tbetrue.(不可能=couldn’t)疑问句Can

thisnewsbetrue?(=Could)≠Maythisnewsbetrue?(1)can=am/is/areableto=shall/willbeableto①Noonecandoit.=Nooneisabletodoit.②Canyoucometonight?=Willyoubeableto

cometonight?2.can/beableto

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。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。我们不得不在家照顾我们的妹妹。Wehavetolookafteroursisterathome.明天早上他必须早起吗？Doeshehavetogetupearlytomorrowmorning?今天我不必呆在家里。Idon’thavetostayathometoday.例：(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.4.情态动词“haveto”与其他的情态动词如“can”,“may”“must”和“should”不同。例:他能和我们一起去吗？他不能和我们一起去。(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。Canhegowithus?Hecan’tgowithus.而“haveto”要加助动词do,does或did才可能完成其疑问句、否定句。Idon’tlikethisTVset.Imustbuyanewone.ThisTVsetdoesn’twork.Wehaveto

buyanewone.5.must/havetomust表示主观“必须”；haveto表示客观需要，即“不得不”。1.Thankyoufor

(ask/asking),butIcan’tgotothemovieswithyou.2.Paulhastostudy

(at/for)themathtesttonight.3.Mysisterhastoo

(much/many)homeworktodo.Exercise一、选择正确的选项填空。askingformuch4.Canyoucometomyparty

(at/on)Saturdaynight?5.Sheinvitesme

(watch/towatch)thebasketballmatchthedayaftertomorrow.6.Ilikeplaying

(piano/thepiano).ontowatchthepiano1.Canyouplaytenniswith

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

hishomeworkthisafternoon.