A:Whatwouldyoudoifyouhadamilliondollars?Unit5ItmustbelongtoCarla.GuessinggamesHecan’tbe_______.Hecould/mightbe_______.Hecan’tbe_______.Hecould/mightbe_______.Hecan’tbe_______.Hecould/mightbe_______.Hecan’tbe_______.Hecould/mightbe_______.Hemustbe__________.Hecan’tbe___.Hecould/mightbe__.Hecan’tbe__.Hecould/mightbe__.Hemustbe_____.情态动词must,might,could,can’t表示推测的含义与用法。情态动词must,might,could,can’t后面都接动词原形，都可以表示对现在情况的揣测或推断，但他们的含义有所不同：1aLookatthepicture.Writethethingsyouseeinthecorrectcolumnsinthechart.belongtosomeone和besomeone’s1bListenandmatcheachpersonwithathingandareason.ListeningtextGirl2:Oh,thattoycarmustbelongtoJane’slittlebrother.Hewastheonlylittlekidatthepicnic.AndthemagazinemustbelongtoDengWen.Helovescats.Boy1:Oh,andlook,someoneleftabook.Girl2:Oh,yeah…ThisbookmustbeMary’s.Hemingwayisherfavoriteauthor.Girl1:Ok…andhowaboutthisCD?Girl2:Hmmm…TheCDmustbelongtoGrace.Shealwayslistenstoclassicalmusic.Sampledialogue1:A:Look!Whosebookisthis?B:ItmustbeMary’s.BecauseHemingwayisherfavoriteauthor.Sampledialogue2:A:Look!Whosetoycaristhis?B:ItmustbeJane’slittlebrother’s.Becausehewastheonlylittlekidatthepicnic.Sampledialogue3:A:WhoseCDisthis?B:ItmustbeGrace’s.Becauseshealwayslistenstoclassicalmusic.EXERCISES:1.Thisbook____LiuYing’s.Look,hernameisonthebookcover（封面）.a.mustbeb.maybec.maybed.mustn’tbe2.-----Whoisthemanoverthere?IsitMrLi?-----No,it______behim.MrLiisinhishometownnow.a.mustn’tb.maynotc.can’td.needn’t3.-----Listen,someoneiscoming,who______itbe?-----It_____beTom.Hesaidhewastocomeatthetime.a.might;canb.can;mustc.can;mayd.could;can1.这本书一定是李雷的。他正在找这本书。3.这个玩具可能是约翰的妹妹的。她还是个小姑娘。Goodbye!TherearefivepeopleinDick’sfamily.Mr.Smithisaworker.Mrs.Smithisahousewife.Dick’ssisterGraceis20.Shehaslonghairandshelikesmusic.Dickisa13-year-oldboy.Helikessportsandcanplaytheguitar.Mark,Dick’sbrotherisjust3yearsold.Whose---isthis?Why?GrammarFocus一.can和could的区别和用法1.can表示体力和脑力方面的能力,或根据客观条件能做某种动作的“能力”。e.g.CanyouspeakEnglish？Canyoumakeacake？can