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Period2SectionA(GF-3c)Unit9Canyoucometomyparty?学习目标Keywords&phrases:invite，accept，refuse，studyforamathtest，ontheweekend，practicetheviolinKeysentences:1.—CanyoucometomypartyonSaturday?—Sure，I'dloveto./Sorry，Imuststudyforamathtest.2.—Canshegotothebaseballgame?—No，she'snotavailable.Shemustgotothedoctor.Make,acceptanddeclineinvitations.A:Canyoucometomybirthdayparty?B:Sure,I’dloveto.birthdaypartyReviewA:Canyougototheconcert?B:I’msorry,Ican’t.Ihavetoprepareforanexam.gototheconcertprepareforanexamA:Canyougotothemovies?B:I’msorry,Ican’t.Ihavetogotothedoctor.A:Canhegotothemovies?B:No,hecan’t.Hehastogotothedoctor.gotomoviesgotothedoctorA:Canyougotothezoo?B:Sorry,Ican’t.Ihavetohelpmyparents.A:Canhegotothezoo?B:No,hecan’t.Hehastohelphisparents.gotothezoohelpmyparentsA:Canyouplaycomputergameswithme?B:Sorry,Ican’t.Ihavetogotothebaseballgame.A:Canheplaycomputergameswithme?B:No,hecan’t.Hehastogotothebaseballgame.playcomputergamesgotothebaseballgameA:Canyouplaysoccerwithme?B:Sorry,Ican’t.IhavetowatchTV.A:Cansheplaysoccer?B:No,shecan’t.ShehastowatchTV.playsoccerwatchTVAccept(接受)invitations:Sure/Yes/Ofcourse,I’dloveto.Certainly,I’dliketo.Decline(拒绝)invitations:I’msorry,Ican’t.Ihavetolookaftermygrandmother.Ihavetostudyforamathtest.Iamgoingshoppingwithmyfriend.…Canyou...?意为“你能……吗？”，可用于邀请别人或委婉地请求某人去做某事。其肯定回答常用Sure,I’dlove/liketo.，否定回答常用I’msorry,Ican’t./Sorry,Ican’t.等。如：--Canyougotothebaseballgame?你能去参加棒球比赛吗？--I’msorry,Ican’t.对不起，我不能。ExplanationPresentation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”。You/Heshouldstudyhard.你/他应该好好学习。Hehastostudyhard.他不得不好好学习。haveto的用法（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、否定句。试将下面三句话分别写成1）一般疑问句，并作肯定回答。2）否定句。a.Theyhavetogototheparty.Dotheyhavetogototheparty?Yes,theydo.Theydon’thavetogototheparty.b.Hehastogotoseethedoctor.Doeshehavetogotoseethedoctor?Yes,hedoes.Hedoesn’thavetogotoseethedoctor.c.Shehadtostudyforamathtestyesterday.Didshehavetostudyforamathyesterday?Yes,shedid.Shedidn’thavetostudyforamathyesterday.haveto与must二者都有“必须”之意，但haveto表示“客观上的需要”，有人称和时态的变化，否定形式为don’t/doesn’t/didn’thaveto(没必要)；must表示“主观上的要求”，无人称和时态的变化，否定回答一般用needn’t或don'thaveto(不必)。mustn’t表示“禁止”。如：Wehavetowearwarmclothesinwinter.冬天我们不得不穿上暖和的衣服。(客观需要)ImustfinishmyhomeworkfirstbeforeIwatchTV.看电视前我必须先完成作业。(主观要求)比一比Youdon'thavetotellhimaboutit.你不一定要把此事告诉他。Youmustn'ttellhimaboutit.你一定不要把这件事告诉他。—MustIbehomebeforeeighto’clock?8点之前我必须回家吗？—Yes,youmust./No,youneedn‘t./No,youdon’thaveto.是的，必须回家。/不，不必。watchTVontheweekendmycousinvisitgrandparentsCompletetheanswerswithmightandoneofthephrasesinthebox.3a1.A:WhatareyougoingtodoonSaturday?B:I’mnotsure.Imight_______________________2.A:Whatareyouplanningtodoafterschool?B:Idon’tknow._______________________visitmygrandparentsImightwatchTV.3.A:Whenwillyoufinishthesciencehomework?B:_______________________________________________4.A:Whoareyougoingtothemovieswith?B:_______________________________________________5.AreyoufreetocometomyplaceonSaturday?B:_______________________________________________watchTVontheweekendmycousinvisitgrandparentsIdon’tknow.Imightfinishitonweekend.I’mnotsure.Imightgowithmycousin.I’mnotsure.Imighthavetopracticetheviolin.3bCompletethesentencesbelow.Usethewordsinbracketstohelpyou.1.Inviting:_______________________________(can/playtennis)Accepting:_______________________________2.Inviting:__________________________________________(wouldliketo/gotothemovies)Refusing:_______________________________Reason:_________________________________(mighthaveto)CanyouplaytennisonSaturday?Sure.Thatsoundsgreat.WouldyouliketogotothemoviesonFriday?Sorry,Ican’t.Imighthavetogooutwithmyparents.3.Inviting:_______________________________(can/hangoutwithustonight)Refusing:_______________________________Reason:____________________________(must)4.Inviting:_______________________________________________(wouldliketo/cometomybirthdayparty)Accepting:_______________________________Canyouhangoutwithustonight?Sorry,I’mnotfree.Imuststudyforatest.Wouldyouliketocometomybirthdayparty?Sure.I’dloveto.invitev.邀请①Themaninvitedmyfathertogofishingwithhimthismorning.这个男人今天上午邀请我爸爸和他一起去钓鱼。②Iinvitedhimtomyhouseyesterday.我昨天邀请他来我家。③Hewillnotcomewithoutyourinvitation.没有你的请柬他是不会来的。“邀请某人干某事”为invitesb.todosthinvitesb.to后也可跟名词。invite的名词是invitation3cWritedowneverythingyouhavetodonextweek.Chooseadayandtimetohaveaparty.Theninviteclassmatestoyourparty.A:Canyoucometomyparty?B:Whenisit?A:Nextweek,onThursdaynight.B:I’msorry.Ihavetostudyforamathtest.MON.TUE.WED.THUR.FRI.SAT.SUN.Summary•Invitation:Canyoucometomyparty…?•Acceptation:Sure,I’dloveto.Yes,I’dloveto.•Declination:I’msorry,Ican’t.Ihaveto…I’dloveto,butIhaveto…•RevisethesentencesinGrammarFocus.•Practicehowtoacceptordeclineaninvitation.