沪教版（2024）七下英语Unit6Electricityeverywhere第3课时Grammar课件

Unit6ElectricityEverywhere下（沪教2025版）七年级Grammar13PresentationPractice5Production7Summary2468Learning

objectivesLeadinAssessmentHomeworkBytheendofthelesson,Iwillbeableto...12Learningobjectives003understandandmastertheusagesofmodalverbs:canandcannot,mayandmaynot,mustandmustnot;cantalkwithmypartneraboutwhatmyrobotcando;canwriteandspeaksentenceswithcanandcannot,mayandmaynot,mustandmustnot;Leadin01Canrobotsdance?Let'senjoyashortvideoclip.Leadin01Q:Whatcanyousee?Q:Whodoyouthinkcansavetheworld?”FreetalkLeadin01Leadin01It'slightningoutside.

DaisyandherbrotherBennyareathome.DaisyistellingherbrotherBennyabouthersciencelesson.DaisyBennyReadthedialogueandpay

attentiontothewordsinbold.02Presentation02Itwasgreat.Welearntaboutelectricityinourscienceclass.Yes,ofcourse.Butyoumustgiveitbacktomebecauseit'smy

favouriteruler!Howwasyourschoolday,Daisy?DaisyBennyCanyoutellmewhatyouknowaboutelectricity?Wecan'tseeitpoweringeverydaythingsbutwecanseeitwhenthereisalightningstorm.Right.Mumtoldmewemustn'tgooutdoorsduringastorm.It's

dangerous.Yes,that'sright.However,youcanproduceelectricitysafelybyrubbingaruleragainstyoursweater.Lookatme!Wow.That'sfun!MayItry?

Listenagainandpay

attentiontothewordsinred.02Presentation02Itwasgreat.Welearntaboutelectricityinourscienceclass.Yes,ofcourse.Butyoumustgiveitbacktomebecauseit'smy

favouriteruler!Howwasyourschoolday,Daisy?Canyoutellmewhatyouknowaboutelectricity?Wecan'tseeitpoweringeverydaythingsbutwecanseeitwhen

thereisalightningstorm.Right.Mumtoldmewemustn'tgooutdoorsduringastorm.It's

dangerous.Yes,that'sright.However,youcanproduceelectricitysafelybyrubbingaruleragainstyoursweater.Lookatme!Wow.That'sfun!MayItry?Pleasesummarizethemodalverbsinthisdialogue.can，can't，must，mustn't，maycanandcannot,mayandmaynot,mustandmustnot02Presentation02Modalverbscanbeusedtotalkaboutability,permission,obligation,etc.Modalverbs情态动词obligationn.

义务，责任[ˌɒblɪˈɡeɪʃ(ə)n]permissionn.同意；许可[pəˈmɪʃ(ə)n]abilityn.能力；才能；本领[əˈbɪləti]Modalverbs02Presentation02情态动词不能独立作谓语，必须和其他动词一起构成谓语。没有人称和数的变化，后面必须跟动词原形。Let'ssumuptherules!•Aftermodalverbssuchascan,mayandmust,weusethebaseformofaverb.•Weusecanandcannot(can't)tosayweareableorunabletodosomething.•Weusemayandmaynottoaskfor,giveandrefusepermission.Inlessformalsituations,somepeopleliketousecanandcannot(can't)forthesamepurpose.•Weusemustandmustnot(mustn't)totellpeoplewhattodoorwhatnottodo.02Presentation02动词原形02Presentation02Thisrobotcan/cannot/can'tfly.Anncouldswimattheageofthree.can和cannotcan的否定式为cannot,可以缩写为can't。can的过去式是could,

couldnot可以缩写为couldn't。

（1）can表示主语具备的能力，意为“能；会”；

could表示主语过去所具备的能力。02Presentation02-CouldIstayhereforamoment?-Yes,youcan.（2）can表示请求或允许，意为“可以”；

could表示请求时，语气更客气委婉，

回答时用can。02Presentation02（3）Can用于表示可能性，

较多用于疑问句和否定句。CanitbeDanny?Itcan'tbeLily'sbagbecausethereisLisa'snameonit.Modalverbs02Presentation02may和maynotmay的否定式为maynot。may的过去式是might。02Presentation02（1）may用于第一人称表示征求对方的意见，意为“可以”，

比can更有礼貌，语气更委婉。

肯定回答时用“Yes,youmay.”；

否定回答时常用“No,youcan't/mustn't.”-May

IwatchTV,Mum?-Yes,youmay./No,youcan't/mustn't.02Presentation02（2）may表示推测时，意为“可能；也许”。

might可作may的过去式，也可代替

may说明现在的情况，语气比may弱。Maybetheserobotsmaysavetheworld.Buttheymaynotdoitalone.Modalverbs02Presentation02must和mustnotmust的否定式为mustnot,可以缩写为mustn't。must没有过去式。Modalverbs02Presentation02（1）must表示“必须；应该”；

mustn't表示“不许；禁止；

绝对不可以”。

否定回答常用needn't或

don'thaveto。Thereisabigdanger.Theserobots

mustactquickly.Buttheymustnotmakemistakes.-Musttheyleave?-No,theyneedn't/don'thaveto.Modalverbs02Presentation02（2）must用于表示肯定的推测，且语气较强，

表示说话人相信某事是事实。Theremustbesomeoneintheroom,forthelightison.Thepoliceofficer________(can/may)helptherobots.

Buthe__________(mustnot/can't)fightthebadguysalone.”canPractice03Completethesentencewithcan,can't,

may,mustnot.can't

Daisygotarobotforherbirthday.Daisy:Thankyou,Dad.Itisthebestgiftintheworld!Dad:

You(1)_______nameyourrobotnow.Daisy:IthinkI'llcallhim“Bobo”.Dad:

That'sagoodname.Daisy:How(2)_______Iturnhimon?Dad:

Firstyouhavetoputthebatteriesinsidehere.Thenyou(3)_______

switch

iton.Nowyou(4)_______talkwith“Bobo”.Bobo:Hello.Pleasegivemeaname.can/mayPractice03Completetheconversationwithcan,can't/cannot,

may,maynot,must,mustn't/mustnot.cancan/maycan/mayPractice03Completetheconversationwithcan,can't/cannot,

may,maynot,must,mustn't/mustnot.Daisy:Hello.I'llnameyou“Bobo”.Bobo:Ilovemyname,thankyou.Dad:

Bobo,pleasetelluswhatyou(5)_______do.Bobo:I(6)_______danceandsingandplayfootball.I(7)_______play

chessand

I(8)_______speakChinese,EnglishandFrench.Daisy:Wow!You(9)_______helpmewithmyhomeworkthen.Bobo:Ifyouhavequestions,you(10)_______askme.Butyou(11)

_______do

yourhomeworkyourself.cancancancancancan/maymustPractice03Completetheconversationwithcan,can't/cannot,

may,maynot,must,mustn't/mustnot.Daisy:OK.I'llgoswimmingintheafternoon.(12)_______youcome

withme?Bobo:Sorry.I(13)

_______________swim.I(14)

_______stayaway

from

water.IfIgetwet,

I'llbecomeillandwon'tworkanymore.

Soyou(15)______________________________putmeinthe

water.Dad:

Daisy,herearetheinstructionsfor“Bobo”.You(16)_______

readthem

verycarefullyandfindoutwhatyoucanand(17)

_______________do.cancannot/can'tmustmustn't/mustnot/cannot/can'tmustcannot/can'tRoleplaytheconversationsinP89-90byusingthenotesabove.Student1ActasDadActasDaisyStudent2Workingroupsof3.Our

group

canget______.Loud,fluentandcorrectWithbodylanguageandemotionsWithoutbook(声音洪亮，对话流利，内容正确)（有肢体语言和感情）（脱离课本）Practice03Completetheconversationwithmust,mustn't,can,can't,mayormaynot.Sam:(1)_____________youshowmehowtousethisblender,please?Iwanttomakeamilkshake.Mary:Yes,ofcourseI(2)_____________.Butfirst,letmetellyouthemostimportantrulesaboutusingblenders.Sam:OK.CancanPractice03blendern.食物搅拌机[ˈblendə(r)]milkshaken.奶昔[ˈmɪlkʃeɪk]Mary:First,you(3)_____________makesurethelidisclosedbeforeyoustartit.Also,you(4)_________________

puttoomuchstuffinit.You(5)________________fillitabovethisline.Alright,let'sputintwobananasandsomemilk.mustcan't/mustn'tcan'tPractice03/mustn'tlidn.盖子[lid]stuffn.物品[stʌf]Sam:Okay.I'veclosedthelid.(6)___________Istartitnow?Mary:Yes,you(7)_____________.Good,that'senough.Now,you(8)__________pourthemilkshakeintoaglass,butleavesomeforme.Remember:you(9)_____________unplug

theblenderwhenyou'redone,andyou(10)_____________cleanitafterwards.May/Canmay/cancan/maymustmustPractice03unplugv.拔掉…的电源插头[ˌʌnˈplʌɡ]DaisyistellingherlittlebrotherBennysomedosanddon'tsaboutschoollife.GrammarinuseDos(1)____________________________________________(2)____________________________________________(3)____________________________________________(4)____________________________________________(5)____________________________________________Production04ImagineyouareDaisy.YourlittlebrotherBennyisgoingtoprimaryschoolinthenew

term.Youaretellinghimsomedosanddon'tsaboutschoollife.Writethemdown.Grammarinuse>>>Youmustbepolitetoyourclassmatesandteachers.Production04GrammarinuseImagineyouareDaisy.YourlittlebrotherBennyisgoingtoprimaryschoolinthenew

term.