Unit3SectionA3a-4b课件人教版初中英语八年级下册

Couldyoupleasecleanyourroom?SectionA3a—4bReviewSayouttheWordsandexpressionsinthelastclass.A:Mum,couldIgooutfordinnerwithmyfriends?B:Sure,thatshouldbeOK.A:CouldIgetsomethingtodrinkwithmy

friendsafterthemovie?B:Sure,youcan.Readthestoryandanswerthequestions.Lastmonth,ourdogwelcomedmewhenIcamehomefromschool.Hewantedawalk,butIwastootired.Ithrewdownmybagandwenttothelivingroom.TheminuteIsatdowninfrontoftheTV,mymomcameover.WhywasNancysmomangrywithher?Didtheysolvetheproblem?How?3a“Couldyoupleasetakethedogforawalk?”

sheasked.“CouldIwatchoneshowfirst?”Iasked.“No!”sherepliedangrily.“YouwatchTVallthetimeandneverhelpoutaroundthehouse!Ican’tworkalldayanddohouseworkallevening.”“Well,Iworkalldayatschool,too!I’mjustastiredasyouare!”Ishoutedback.Mymomdidnotsayanythingandwalkedaway.Foroneweek,shedidnotdoanyhouseworkandneitherdidI.

Finally,Icouldnotfindacleandishoracleanshirt.Thenextday,mymomcamehomefromworktofindthehousecleanandtidy.“Whathappened?”sheaskedinsurprise.“I’msosorry,Mom.Ifinallyunderstandthatweneedtosharethehouseworktohaveacleanandcomfortablehome,”Ireplied.3bReadthesentencesbelow.Underlinethesentencesfromthereadingthatmeanthesamething.

Neitherofusdidanyhouseworkforaweek.2.MymomcameoverassoonasIsatdowninfrontoftheTV.3.You’retired,butI’mtired,too.Foroneweek,shedidnotdoanyhouseworkandneitherdidI.TheminuteIsatdowninfrontoftheTV,mymomcameover.I’mjustastiredasyouare!Decidewhethertheunderlinedwordsinthesentencesareverbsornouns.Thenwriteanothersentenceusingtheunderlinedwordintheotherform.Couldyoutakethedogforawalk?(noun)

Iwalkedhomefromschool.(verb)CouldIwatchoneshowfirst?_________________________________Couldyoushowmeyournewbook?(noun)(verb)3cIcan’tworkallday.____________________________.YouwatchTVallthetime.______________________________.“Whathappened?”sheaskedinsurprise.___________________________________.(verb)Ihavetodosomework.(noun)(verb)Yournewwatchlooksnice(noun)(noun)Oh,mygod,yousurprisedmealot.(verb)Fillintheblankswith“make”or“do”.A:Ihateto___chores.B:Well,Ihatesomechorestoo,butIlikeotherchores.A:Really?Doyouliketo___thelaundry?B:No,Idon’t.It’sboring.dodoA:Iagree.Doyouliketo_____the

bed?B:No,notreally.ButIliketo___thedishes,becauseit’srelaxing.AndIliketo_____breakfast,becauseIliketocook.makemakedoCouldIgooutfordinnerwithmyfriends?Sure,thatshouldbeOK.Couldwegetsomethingtodrinkafterthemovie?No,youcan’t.Youhaveabasketballgametomorrow.GrammarFocusCanyoupleasetakethedogforawalk?OK,butIwanttowatchoneshowfirst.Canyoupleasetakeouttherubbish?Yes,sure.情态动词的语法特征1)情态动词不能单独作谓语,除ought和have外,后面只能接不带to的不定式。2)情态动词没有人称,数的变化,但有些情态动词,如can、will也有一般式和过去式的变化。3)

情态动词的“时态”形式并不是时间区别的主要标志,不少情况下,情态动词的现在式形式和过去式形式都可用来表示现在时间、过去时间和将来时间。could的主要用法是：

A.could是can的过去式,表示与过去有关的能力和推测:e.g.Weallknewthattheyoungmancouldn’t

beadoctor.B.could可以代替can表示请求,但语气较can客气、委婉:e.g.Couldyoulendmeyourdictionary?

Could

Iuseyourbike?C.can和could接动词的完成形式，表示可能已经做某事。can用在否定和疑问句中,表示不相信、怀疑等态度。e.g.Theycan’t

havegoneoutbecausethelightisstillon.以could或would提问时，不能再以could或would作答，而应该用can或will。如：—CouldIborrowyourdictionary?—Yes,ofcourseyoucan.情态动词用法小结1.情态动词不能表示正在发生或已经发生的事情,只表示期待或估计某事的发生。2.情态动词除ought和have外,后面只能接不带to的不定式。3.情态动词没有人称，数的变化，即情态动词第三人称单数不加-s。4.情态动词没有非谓语形式，即没有不定式、分词等形式。could与can的区别

could与can都是情态动词,could是can的过去式。二者都可用于表示请求,但是用法稍有不同。can表示一般性的请求，语气随便,常用于熟人之间或长辈对晚辈,上级对下级的场合。e.g.Canyoutellusyourstory,Tony?托尼，你能给我们讲讲你的故事吗？

could表示有礼貌的请求，语气委婉，常用于非熟人之间或晚辈对长辈，下级对上级的场合。比如：—Could

youtellusifitsnowsinwinterinAustralia?—Sure.—请告诉我们,澳大利亚冬天下雪吗?—当然可以。注意：1.提出委婉的请求在回答中不可用could。A:CouldIhavethetelevisionon?B:Yes,youcan./No,youcan’t.2.在否定、疑问句中表示推测或怀疑用couldn’t。

Hecouldn’tbeabadman.

他不大可能是坏人。WriteRforrequestsandPforpermissions.Thenmatcheachonewiththecorrectresponse.4aPRPRR1—d2---a3---c4---e5---bFillintheblanksintheconversation4bA:Ihateto_________chores.B:Well,Ihatesomechorestoo,butIlikeother

chores.A:Really?Great!________Iaskyouto____mewith

somechoresthen?B:Whatdoyouneedhelpwith? A:______youplease_____myclothesforme?B:Idon’twanttodothat!It’sboring!CoulddohelpCouldfoldA:OK.Then______you______dothedishesforme?B:Sure,noproblem.But_______wegotothe

moviesafterthat?A:Sure,I’llfinishmyhomeworkwhileyouhelpme

withthedishes.Thenwecangotothemovies.couldpleasecouldA:Couldyouhelpme,please?B:___________!A:Iwantto________theseboxestomyhomeLet’s