Unit6Grammar课件沪教版七年级英语下册

LearningobjectivesBytheendofthisclass,Ican:1.Gettoknowthemeaningsandusageofmodalverbs.2.Usemodalverbsproperlytotalkaboutrulesindailylives.3.Makea“HomeElectricalSafetyGuide”.DearDaisyandBenny,You’rehomealone.Pleasestaysafewithelectricity.Bothofyou

mustn’ttouchanyelectricalappliancewithwethands.Daisy

canusethemicrowave,butBenny,youmustn’tputmetalinit.You

mustunplugthehairdryerafteruse.You

maywatchTVfor1hour.You

needn’tturnitonifyoudon’twantto.Besmart,besafe!Love,Mum&DadDaisy'sparentswereonabusinesstripfortwodays.TheyleftanoteforDaisyandtheirsonBenny.Whatcantheydo?Whatmustn’ttheydo?Payattentiontotheredwords.Whatarethey?ModalVerbs情态动词Dotheychangeformwhenthesubjectchanges?Rule1:Modalverbs:nochangefordifferentsubjects!Whatdothesemodalverbsmean?WhatifIremovethecan,must,andmay?Thespeaker’smoodandattitudechanged!Whatotherrulesdotheyneed?Howcanwelearnmoreaboutsafeelectricityuseathome?Activity1:ReadandUnderstandDad,it’ssoboringtostayathome.Imissyou.Benny,whydon’tyouplaywithyourrobotBobo?JustknowwhatBobocanandcannotdofirst.Great!Bobocanintroducehowtouseittous.Instructioncardcanmaymustneedn’tmustn’tactivityBoboswim,danceandplaychessYouaskBoboquestionskeepBoboawayfromwaterputBoboinwaterchargeBoboeverydayListentoBobo’sintroductionandcompletetheinstructioncard.(Tick☑therightmodalverbinthetable.)✅✅✅✅✅Whichmodalverbfeelsthemostpositive？

Whichonefeelsthemostnegative？Activity2:ListenandTickChoosethecorrectmodalverbstofillintheblanksintheuserguide.can/cannot/may/maynot/must/mustn’t/needn’t1.You_______closethelidbeforestarting.2.You_______puttoomuchfoodintheblender.3.You_______unplugtheblenderafteruse.4.You_______cleantheblenderaftereachuse.5.You_______touchthebladewithyourfingers.6.You_______usetheblenderifyoudon’twantto.Thecontentoftheusers’guideismissing...UserGuidemustmustn’tmaycanmustn’tmaynotLookattheverbsafterthemodalverbs.Whatdotheyhaveincommon?Rule2:modalverbs+do(basicform)Activity3:FillandExplainPracticeinpairs,talkabouthowtouserisecookersafely.A:MayIusethericecooker?B:Yes,butyoumust…/youmustn’t…A:MustIunplugit?B:Youneedn’t…butyoumust…A:Gotit.AndImustn’t…B:Exactly!Iwanttocookriceinaricecooker,buthowshouldIusethericecooker?Icanhelpyou!ExampleActivity4:Role-playandPracticeToensurethesafetyofelectricityusageathome,Daisydecidedtomakeaguideandstickitontherefrigerator.Group1-2:Kitchen(microwave,ricecooker,blender,fridge)Group3-4:Livingroom(TV,fan,lights,phonecharging)Group5-6:Bathroom(hairdryer,water,sockets)Group7-8:Bedroom(laptop,alarmclock,heater)GroupWorkActivity5:CreateandShareTimetoshow!GuideforHomeAloneElectricity★★★★★★★★★★★★1.Icanusecorrectmodalverbs(can,may,must,needn’t,mustn’t,etc.)intherules.2.Icanmatchthestrengthofmodalverbstotherightsituation(e.g.,mustforstrongrules,mayforpermission).3.IcanwriteclearandusefulsafetyrulesthathelpDaisyandBennystaysafeathome.Checkyourguideaccordingtotheevaluation.Withtherightguideonthefridge,DaisyandBennycanstaysafeandsmart.Activity6:PresentandImproveElectricitymakeslifeeasy,butonlyifweuseitsafely.Besmart,besafe!HomeworkMustdoBennyisgoingtoprimaryschool.Usemodalverbstowriteatleast2dosand2don’tstotellhimtheschoolrules.ChoosetodoMakea“HomeElectricalSafetyGuide”.Useatleast3differentmodalverbs.1.We______seeelectricity,butwe______seeitspowerinlights.A.can;canB.can’t;canC.must;mayD.may;must答案：B解析：表达“看不见电但能看见其作用”，否定用can’t，肯定用can课堂练习2.—______Iusethehairdryerinthebathroom?—No,you______.It’sdangerous!A.Must;mustn’tB.May;can’tC.Can;couldn’tD.May;mustn’t答案：D解析：请求许可用MayI...?，禁止用mustn’t强调安全规则课堂练习3.Tosaveenergy,you______turnofflightswhenleavingaroom.A.mustB.mayC.canD.mustn’t答案：A解析：m