Unit6ElectricityeverywhereLesson3Grammar目錄頁(yè)標(biāo)題Learningobjectives通過(guò)本課時(shí)的學(xué)習(xí)，學(xué)生能夠：1.梳理、歸納情態(tài)動(dòng)詞can，must，may的使用規(guī)則和區(qū)別。2.恰當(dāng)?shù)剡\(yùn)用情態(tài)動(dòng)詞表達(dá)能力、許可、責(zé)任等。3.使用目標(biāo)語(yǔ)法寫一些在學(xué)校的注意事項(xiàng)。

重點(diǎn)ReadandanswerWhatdothesewordsinboldhaveincommon?DaisyistellingherbrotherBennyabouthersciencelesson.Readtheirdialogueandanswerthequestion.ReadandanswerDaisyistellingherbrotherBennyabouthersciencelesson.Readtheirdialogueandanswerthequestion.Theyareallmodalverbs.Modalverbs+do情態(tài)動(dòng)詞具有一定的詞義，但不能獨(dú)立存在，須與動(dòng)詞原形一起構(gòu)成謂語(yǔ)，表示說(shuō)話人對(duì)動(dòng)作的觀點(diǎn)，如能力、許可、義務(wù)、推測(cè)、判斷等;情態(tài)動(dòng)詞有時(shí)態(tài)的變化，但沒(méi)有人稱和數(shù)的變化（haveto除外）；情態(tài)動(dòng)詞后接動(dòng)詞原形。ReadandthinkWhatarethedifferencesamongcan,mustandmay?Let’sfindout!Readandlearn6Can

yougivemesomewater,please?Tomakearequest—CanIuseyourpen?—Yes,youcan.ToaskforandgivepermissionSnakescanbedangerous.Toshowpossibility(客觀上的可能性)Shecan’tbeinthelibrary.It’sclosed!Use“can’t”tosaysomethingisimpossibleToexpresstheabilityIcansingEnglishsongs.UsagesofCANReadandmatch3.Thispairoftrousersistooshortforme.Can

youshowmeanotherpair?5.YoucanwatchTVfor30minutes.4.Shecanspeakthreelanguages.2.

Thelightsareoff.Theycan’tbeworkingintheofficenow.TomakearequestToaskforandgivepermissionToshowpossibilityUse“can’t”tosaysomethingisimpossibleToexpresstheability1.Toomuchsugarcanharmyourteeth.Readandlearn8Youmayleavethemeetingearlyifneeded.MayIhelpyouwithyourbags?Itmayrainlater,sobringanumbrella.MayIborrowyourpen?ToaskforpermissionTogivepermissionToshowpossibilityForpoliteexpressionsUsagesofMAYReadandmatchToaskforpermissionTogivepermissionForpoliteexpressionsToshowpossibilityMayIborrowyourpen?MayIhelpyousetthetable?Shemayalreadyknowtheanswertothequestion.Youmayhandinthereporttomorrow.Lookandmakesentences(Youmustn’tsmokehere.)(Youmustn’t

swimhere.)

(Youmustn’t

climbthisladder.)(Youmustn’tuseyourmobilephonehere.)Whatdothesesignsmean?Weuse“mustn’t”toexpressprohibition.UsageofMUSTN’TReadandlearnYoumuststopsmokingbecauseitisbadforyourhealth.Youmustalwaysbecarefulwhenmakingonlinefriends.TogivestrongadviceMustIdomyhomeworknow?Yes,youmust./No,youneedn’t(don’thaveto).ToshownecessityTheTVcannotbeturnedon.Theplug(插頭)mustbeloose(松了).Toexpresspositivespeculation(有把握的肯定推測(cè))UsagesofMUSTstrongadviceReadandmatchmustprohibition(mustn’t)necessityorrulespositivespeculationAllstudentsmustwearwhiteshoes.Imustfinishthework.

Wemustn’tsmokehere.Wemustn’tbelateforschool.

Hemustbeoneofthetopstudentsinthecity.Hemustbeintheclassroom.YoumustturnofftheTVbeforeyouleave.Youmustalwaysbecarefulwithelectricity.

SummaryModalverbsDefinitionUsagesofcan,mayandmust.情態(tài)動(dòng)詞具有一定的詞義，但不能獨(dú)立存在，須與動(dòng)詞原形一起構(gòu)成謂語(yǔ)，表示說(shuō)話人對(duì)動(dòng)作的觀點(diǎn)，如能力、許可、義務(wù)、推測(cè)、判斷等;情態(tài)動(dòng)詞有時(shí)態(tài)的變化，但沒(méi)有人稱和數(shù)的變化（haveto除外）；情態(tài)動(dòng)詞后接動(dòng)詞原形?！癱an”表示能力；表示請(qǐng)求或許可；表示客觀上的可能性；“can’t”表示“不可能”“肯定不”。“may”

表示請(qǐng)求或許可；表示推測(cè)（可能）?！癿ust”

表示義務(wù)或必須要做的事；表示強(qiáng)烈建議；表示肯定推測(cè)。mustn’t表禁止。Daisygotarobotforherbirthday.Completetheconversationwithcan,can’t/cannot,may,maynot,must,mustn’t/mustnot.ReadandcompleteDaisy:Thankyou,Dad.Itisthebestgiftintheworld!Dad:You(1)_______nameyourrobotnow.Daisy:IthinkI’llcallhim“Bobo”.Dad:That’sagoodname.Daisy:How(2)_______Iturnhimon?Dad:Firstyouhavetoputthebatteriesinsidehere.Thenyou(3)_______switchiton.Nowyou(4)_______talkwith“Bobo”.can/maycancan/maycan/mayDaisygotarobotforherbirthday.Completetheconversationwithcan,can’t/cannot,may,maynot,must,mustn’t/mustnot.ReadandcompleteBobo:Hello.Pleasegivemeaname.Daisy:Hello.I’llnameyou“Bobo”.Bobo:Ilovemyname,thankyou.Dad:Bobo,pleasetelluswhatyou(5)_______do.Bobo:I(6)_______danceandsingandplayfootball.I(7)_______playchessandI(8)_______speakChinese,EnglishandFrench.Daisy:Wow!You(9)_______helpmewithmyhomeworkthen.cancancancancanDaisygotarobotforherbirthday.Completetheconversationwithcan,can’t/cannot,may,maynot,must,mustn’t/mustnot.ReadandcompleteBobo:Ifyouhavequestions,you(10)__________askme.Butyou(11)_______doyourhomeworkyourself.Daisy:OK.I’llgoswimmingintheafternoon.(12)_______youcomewithme?Bobo:Sorry.I(13)______________swim.I(14)_______stayawayfromwater.IfIgetwet,I’llbecomeillandwon’tworkanymore.Soyou(15)__________________________putmeinthewater.Dad:Daisy,herearetheinstructionsfor“Bobo”.You(16)_______readthemverycarefullyandfindoutwhatyoucanand(17)___________do.Bobo:Letmereadthemoutforyou,master....may/canmustCancannot/can’tmustmustnot/mustn’t/cannot/can’tmustcannot/can’tThinkandwriteDos(1)______________________________________________(2)______________________________________________(3)______________________________________________(4)______________________________________________(5)______________________________________________Youmustbepolitetoyourclassmatesandteachers.ImagineyouareDaisy.YourlittlebrotherBennyisgoingtoprimaryschoolinthenewterm.Youaretellinghimsomedosanddon’tsaboutschoollife.Writethemdown.Thinkand