Grammar 【备课精讲精研 】 七年级英语下册 （牛津深圳版）

英语（牛津版）七年级下册EnglishUnit6ElectricityGrammardrawYes,shecan.Shecandraw.Canshedraw?1课堂导入Lookandsay!(using“can”)singNo,theycan't.Theycansing.Cantheydraw?Lookandsay!(using“can”)Lookandsay!(using“can”)No,shecan’t.Shecandance.Cansheswim?Lookandsay!(using“may”)Yes,youmay.No,youcan't.MayIwatchTV?Amanisgoingtoseehisboss.Heisstandingatthedoorway.MayIcomein?Lookandsay!(using“may”)Astudentisgoingtoasktheteacheraquestion.MayIaskyouaquestion?Aboyisthirsty.Heisaskinghismotherforsomething.MayIhavesomewater?Lookandsay!(using“may”)Whataretherules?Well,wecan’tsleepinclass.Wemuststudyhard.Lookandsay!(using“must”)Whataretherules?Well,wemustn’truntheredtrafficlights,wemustobeytherules.Lookandsay!(using“must”)Whatdothesesignsmean?（Youmustn’tsmokehere.）（Youmustn’tclimbthisladder.）（Youmustn’tswimhere.）（Youmustn’tuseyourmobilephonehere.）Lookandsay!(using“must”)AcanandcannotModalverbsWeusethemodelverbscanandcannot(can't)tosayweareableorunabletodosomething.Wecanuseelectricitytodomanythings.Wecannot/can’tseeelectricity.Canyouthinkofanexample?Yes,Ican./No,Icannot/can't.2课堂活动can

①beableto“能”，表示能力

Ican/amabletosinganEnglishsong.我可以唱一首英语歌曲。②表示许可或请求对方允许，意为“可以”CanIuseyourdictionary?我可以用你的字典吗？③过去式：could我十年前就能做到那样.

Icoulddothat10yearsago.④否定式：cannot=can’t情态动词can的用法

⑤could是can的过去式，但表示请求许可时，could和can不表示时态的区别，只是could的语气更加委婉，用could提出的请求要用can来回答。PetercanspeakEnglish.否定→Petercan’t/cannotspeakEnglish.一般疑问句→CanPeterspeakEnglish?(一般疑问句，提前情态动词)特殊疑问句→WhatcanPeterspeak?HiandLoaretalkingaboutthemselves.Whataretheysaying?Readtheirconversationandthencompletethestatementsbelowwithcanorcannot.1.Hi_____playfootball.2.Lo_____paint.3.Hi_____speakasmanylanguagesasLo.4.BothHiandLo_____dance.5.Lo_____driveacar,buthe_____playchess.6.Hi____swim,buthe_____playtheguitar.cancancancancannotcannotcannotcannotBmayandmaynotWeusemayandmaynottoaskforandgivepermission.Wealsousecanandcannot(can‘t)forthesamepurpose.May/CanIuseyourmobilephone？Yes,youmay/can.No,youmaynot/can't.Youmay/canturnontheTV.Youmaynot/cannotplayinthekitchen.情态动词may的用法may

①表示允许may表示许可或请求对方允许，意为“可以”，相当于can。两者的区别在于：表示请求许可时，may更能表示礼貌或敬意。

—MayIwatchTVnow,grandma?—No,youmaynot.②否定式：maynot意为“不可以”。③may构成的一般疑问句及其回答形式如下：—MayI...? —(肯定回答)Yes,youmay/can. —(否定回答) No,youmaynot/can’t/mustn’t.(注：mustn’t的语气最强，表示禁止)Benny:Howareyoufeeling,Daisy?Daisy:Notverywell.Benny:_________Igetyouachair?Daisy:Yes,thanks.Benny:I’mgoingout._____Iborrowyourbicycle,Daisy?MayMay/CanDaisyisnotfeelingwelltoday.Bennyisathomewithher.Readtheirconversationbelow.Fillintheblankswithmayorcan.Daisy:Yes,youmay.Beforeyougotomeetyourfriends,canyoucomeandseethedoctorwithme?Benny:Yes.I____.______Icarryyourbagforyou?Daisy:Yes,that’sverykindofyou,Benny.I’mreadytogo.____youopenthedoorforme?Benny:Yes,Ican.Daisy:Thanks.MayCanCanCmustandmustnotWeusemustandmustnot(mustn't)totellpeoplewhattodoorwhatnottodo.Youmustnot/mustn’tdothat,Benny!Wemustalwaysbecarefulwithelectricity.Theymustnot/mustn’tplayneartheheater.情态动词must的用法must

①表示规定、命令、强制，意为“必须；一定”。如：Youmustdoyourhomeworkfirst.你必须先做作业。

Youmustn’tsmokehere.你不许在这里吸烟。②must的否定式为mustnot/mustn’t，意为“禁止；不准”③must构成的一般疑问句及其回答形式如下：—MustI...?—(肯定回答)Yes,youmust.—(否定回答)No,youneedn’t.④辨析must和haveto意义用法must“必须；一定”强调客观上必须做某事haveto“不得不；必须”强调主观上不得不做某事Imustdrinkmorewater.____________________________________________________________Imustnot_________________________________________________________________________________Imustgotobedearly.Imusttakethemedicineontime.eat

coldfood.Imustnotgooutalone.Imustnotsharecupswithothers.Daisysawadoctor.Thedoctortoldherwhattodoandwhatnottodo.Helpherwritedownthedoctor’sinstructions.drinkmorewater gotobedearlyeatcoldfood sharecupswithothersgooutalone takethemedicineontime3课堂小结1.Wehavelearnedhowtousethemodalverbcan,mayandmust.情态动词后接动词______，没有人称和数的变化，_____单独作谓语，要与后面的______共同作谓语。其否定形式是在其后面直接加______。情态动词can的用法：表示能力。构成一般疑问句时，需把can移到______（句首/中）。肯定回答为“Yes,主语+______”；否定回答为“No,主语+____________”not原形不能动词句首cancan’t/cannotSummary情态动词may的用法：表示允许。may在表达这个意思时可以与can互换使用。由may引起的一般疑问句，其否定回答用_______，___________或________。表示请求时，could和can不表示时态的区别，只是could的语气更加委婉。情态动词must的用法：表示必须/一定。其否定形式mustn’t表示______。由must引起的一般疑问句，其否定回答要用______。maynotcan’t/cannotmustn’t禁止needn’t一、用本单元所学的情态动词填空。1.—Kate,youhavewontheEnglishcompetition!

—Oh,it_______betrue.Imadealotofmistakesinit.2.You________talktoyourgrandparentslikethat.It’simpolite.3.We_______washourhandsbeforemeals.Itisgoodforourhealth.can’tmustn’tmust4.Excuseme,____youtellmethewaytothenearestpark?5.You________gowithustothezooifyouwantto.6.I____speakChineseverywell,butI____speakFrenchatall.can can/maycancan’t4课堂练习二、翻译下列句子。1.门锁了。他不可能在家。 Thedoorislocked.He_____beathome.2.我的手表停了，肯定有毛病。 Mywatchdoesn’twork.There_____besomethingwrongwithit.3.—我可以借用你的尺子吗？ —当然可以。但是你必须明天还给我。 —____Iborrowy