九年级英语全册Unit3Teenagersshouldbeallowedtochoosetheirownclothes人教版.ppt

Unit3,Teenagersshouldbeallowedtochoosetheirownclothes.,定义:表示主语是动作的承受者。构成:be+及物动词的过去分词。be有人称、时态和数的变化含有情态动词的被动语态：情态动词be及物动词的过去分词。用法：当我们不知道谁是动作的执行者，或者没有必要指出谁是动作的执行者，或者只强调动作的承受者时，要用被动语态。,被动语态,1a,Woman:So,whatareyoudoingthisafternoon,Anna?Anna:ImgoingtothemallwithJohn.Hejustgothisdriverslicense.Woman:Imsorry.YoucantgowithJohn.Idontthinksixteen-year-oldsshouldbeallowedtodrive.Theyarentseriousenoughatthatage.,Anna:ButIhavetogotothemall.GabysgettingherearspiercedandIwanttowatch.Woman:Idontthinksixteen-year-oldsshouldbeallowedtogettheirearspierced.Theymightbesorrylater.Anna:Iagree,butitsfuntowatch.IsitOKifwetakethebus?,Woman:Well,Iguessso.Anna:Great!Iwanttobuyanewblouseatthemall,too.Woman:Whatkindareyougoingtobuy?MaybeIshouldgowithyou.Anna:Aw,Mom.Imnotachild.Ithinkteenagersshouldbeallowedtochoosetheirownclothes.Woman:Well,Ijustwanttobesureyougetsomethingnice.,1c,Sampledialogue1:,A:Ithinkteenagersshouldbeallowedtogooutwiththeirfriends.B:Iagree.Theyareoldenough.Theycanlookafterthemselveswell.,Sampledialogue2:,A:Idontthinktwelve-year-oldsshouldbeallowedtogettheirearspierced.B:Iagree.Itstoosillytowearearringsintheschool.,Sampledialogue3:,A:Ithinkstudentsshouldbeallowedtodohomeworkwiththeirfriends.B:Idisagree.Theytalkinsteadofdoinghomework.,A:Ithinkteenagersshouldbeallowedtogoouteverynight.A:Ithinkteenagersshouldbeallowedtohavepart-timejobs.A:Ithinkteenagersshouldbeallowedtodrive.,B:Iagree.Theyareold/clever/strong/bright/serious/kind/careful/luckyenough.,Practice,A:Idontthinkteenagersshouldbeallowedtogettheirearspierced.A:Idontthinkteenagersshouldbeallowedtochoosetheirownclothes.,B:Iagree.Theyarenotold/clever/strong/bright/serious/kind/careful/lucky/enough.,B:Iagree.Theyaretooyoung/silly/wild,2a,Kathy_1.Sixteen-year-oldsshouldnotbeallowedtoworkatnight._2.Larryshouldntworkeverynight._3.Heshouldcuthishair._4.Heshouldstopwearingthatsillyearring._5.Hedoesntseemtohavemanyfriends._6.Heshouldntworkonweekends.,MollyADDkADDkADDkADDkADDkADDk,Listenagain.WhatareKathysandMollysreasons?Numbertheirreasonsinthecorrectorder.,2b,4,5,2,3,Molly:Larryisworkinglateagaintonight,Kathy.Kathy:Iknow,Molly.Idontthinksixteen-year-oldsshouldbeallowedtoworkatnight.Youngpeopleneedtosleep.Molly:Idisagreewithyou.Teenageboysnevergettired.,Kathy:Well,maybe.ButLarryshouldntworkeverynight.Molly:Oh,Iagree.Heneedstimetodohomework.Kathy:Youknow,Mollyheshouldreallycuthishair.Molly:Oh,Idisagree.Ikindoflikeit.Itlookscool!,Kathy:YouknowwhatworriesmeLarrydoesntseemtohavemanyfriends.Molly:Yeah,Iknow.Ithinkheshouldntworkonweekends.Kathy:OhIagree,Molly.Heneedstospendtimewithfriends.Molly:Likeyouandme?Kathy:Maybe.,2c,Makealistofthingsteenagersshouldandshouldnotbeallowedtodo.Discussyourlistwithyourpartner.,Sampledialogue1,A:Doyouthinkteenagersshouldbeallowedtohavemobilephones?B:Yes.Itsconvenientforstudentsandtheirparentstocommunicatewitheachother.,A:Doyouthinkteenagersshouldbeallowedtohavemobilephones?B:No,Idontthinkso.Perhapsstudentspaymoreattentiontoshortmessagesthantotheirstudies.,Sampledialogue2,A:Doyouthinkteenagersshouldbeallowedtohaveatripbythemselves?B:Yes,Ido.Theymayasksometravelagenciestohelpthem.,Sampledialogue3,Ithinksixteen-year-oldsshouldbeallowedtodrive.,Sentencestructure:,“sb.+should/shouldnot+beallowedtodo.”,我认为应该允许16岁的孩子开车。,2.我不同意,我认为16岁这个年纪太年轻了。Idisagree.Ithinksixteenistooyoung.3.你认为应该允许13岁的孩子们做兼职工作吗？Doyouthinkthirteen-year-oldsshouldbeallowedtotakepart-timejobs?,4.安娜可以选择自己的衣服。Annaisallowedtowearherownclothes.5.那个年龄的他们不够稳重。Theyarenotseriousenoughatthatage.,1.sixteen-year-olds十六岁的青少年它相当于一个名词,等于sixteenyear-oldkids.“一个16岁青少年”的表达方式:akidofsixteenakidofsixteenyearsoldasixteen-year-oldkid,Explanation,2.stopdoing停止做某事Heshouldstopwearingthatsillyearrings.Wetwostoppedtalking.我们俩个停止了谈话。,3.主seemtodosth.好像Histemperatureseemstobeallright.他的体温好像完全正常。seem的其他用法:(1)seem+形容词Thequestionseemsquiteeasy.那个问题好像很容易。,(2)seem+名词Thatseemsagoodidea.那好像是个好主意。(3)Itseems+that从句Itseemedthatnobodyknewanythingaboutthematter.看来没有人知道这件事。,Thetelephone_(invent)byBellin1876.Thetreesmay_(plant)inspring.Teenagersshouldnot_(allow)todrive.English_(speak)inCanada.Mathmust_(study)well.We_(need)tolearnEnglish.,Finishthesentences.,主动语态变为被动语态的方法是：（1）把原句中的宾语变为主语（2）动词改为被动形式，即be+过去分词（3）原来的主语，如果需要的话，放在by后面，如果没必要，可省略。,一般现在时的被动语态为：主am/is/are（not）过去分词一般过去时的被动语态为：主was/were过去分词现在进行时被动语态的构成为：主语is/am/are+being过去分词一般将来时被动语态的构成为:主语willbe过去分词现在完成时被动语态的构成为：主语have/hasbeen过去分词含有情态动词的被动语态:主语情态动词be过去分词,五.填空（被动语态填空）1.Theyoftencleantheirclassroomafterschool.Theirclassroom_often_bythemafterschool.2.LiLeigaveTomanewpenlastweek.Anewpen_Tomlastweek.3.AlotofpeopleinChinacanspeakEnglishnow.English_byalotofpeopleinChinanow.4.IhavelearnedEnglishforabouttwoyears.English_forabouttwoyears.5.Theywillpublishthesestory-booksnextmonth.Thesestory-books_nextmonth.,被动语态的用法：（1）不知道或没有必要说明动作的执行者是谁Suchbooksarewrittenforchildren.这些书是为儿童写的。Ihaventbeentoldaboutit.没有人告诉我这件事（2）强调动作的承受者，这时应用by短语。ThecupwasbrokenbyDavid.（3）作客观说明时，常采用一种被动语态句型Its/wassaid/believed/reported/+thatItsreportedthataboutthreehundredpeoplewerekilledinthisearthquake.据报道，这次地震中大约有三百人死亡。,1.Insomecountries,tea_withmilkandsugar.A.isservingB.isservedC.servesD.served2.Greatchanges_inmyhometownsince1980.A.havebeentakenplaceB.tookplaceC.havetakenplaceD.weretakenplace3.Thenewtypeofcarisgoingto_inthreeyears.A.turnoutB.beturnedoutC.hasturnedoutD.havebeenturnedout4.Thewomanmurderedherfriendand_to_.A.wassentenced,deathB.sentencing,dieC.sentenced,deathD.sentenced,die,sentencesb.todeath判某人死刑,5.Doyouliketheskirt?It_soft.A.isfeeling