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Unit4Don'teatinclass.SectionA2d-3cLet'schant.Canwewearhatsinschool?No,wecan’t.No,wecan’t.Canwelistentomusic?Yes,wecan!Whatelsedowehavetodo?Wehavetoeatinthedininghall.Dowehavetowearauniform?Yes,wedo.CanyouwatchTVafterschool?Yes,Ican.Yes,Ican.Canyougooutonschoolnights?No,Ican’t.Whatelsedoyouhavetodo?Ihavetopracticetheguitareveryday.Doyouhavetocleanyourroom?Yes,Ido.Don’teatinclass.Don’tarrivelateforclassDon’tsleepinclass.Don’tdrawonthewall.Don’ttalk.Don’tplaysportsintheclassroom.Don’tfight.Don’tlistentomusicintheclassroom.schoolrulesA:Whataretherules?B:Well,don’t…Wecan’t...butwecan…Wemust…•eatinclass•listentomusicoutside•wearhatsatschool•fightinclass•speakloudlyinthelibrary2d.Role-playtheconversation.John:Hi,myname’sJohn.It’smyfirstdayatschool.Alice:Hi,John.I’mAlice.Thisisagreatschool,buttherearealotofrules.John:Really?Whataresomeoftherules?Alice:Well,don’tbelateforclass.Thisisveryimportant.John:OK,sowemustbeontime.Canwebringmusicplayerstoschool?Alice:No,wecan’t.Andwealwayshavetoweartheschooluniform.John:Isee.Alice:Oh,andwealsohavetobequietinthelibrary.观察句子中haveto的使用，可知haveto是由于客观需要而必须、不得不做某事。结构:主语＋haveto＋动词原形＋其他1）一般现在时,主语是第三人称单数时,用hasto。2)否定形式:主语＋don’thaveto＋动词原形＋其他。一般现在时,主语是第三人称单数时,用doesn’thaveto。Nickwearauniform.尼克不必穿制服。doesn'thavetoDon’truninthehallways.Don’tfight.Whataretherules?Wemustbeontimeforclass.Canweeatintheclassroom?No,wecan’t,butwecaneatinthedininghall.Canwewearahatinclass?Yes,wecan./No,wecan’t.Doeshehavetowearauniformatschool?Yes,hedoes./No,hedoesn’t.Whatdoyouhavetodo?Wehavetobequietinthelibrary.GrammarFocus情态动词can表示能力“会,能”Canyouplaytheguitar?你会弹吉他吗？Icandanceandsing.我能跳舞又能唱歌。结构:主语＋can＋haveto意思是“必须、不得不”,它侧重于客观上的必要和外界的权威。结构:主语＋haveto＋do动词原形do动词原形3a.Writetherulesfortheschoollibrary.LibraryRules1.2.3.4.Don’ttalk.Don’teat.Don’tlistentomusic.Don’ttakephotos.Run._____run.Don’tDon’twalk.Walk.LookatsignsyouseeinyourdailylifeandtrytodescribetheminEnglish.3b.Usethewordstomakequestionsabouttherules.Bequiet?Q:Doesshehavetobequietinthelibrary?(she/haveto/inthelibrary)?A:Yes,shedoes.Eat?Q:______________________________________________________(he/haveto/inthedininghall)?A:__________________Doeshehavetoeatinthedininghall?Yes,hedoes.Listentomusic?Q:______________________________________________________(we/can/inthehallways)?A:__________________Wearahat?Q:______________________________________________________(we/can/intheclassroom)?A:__________________Canwelistentomusicinthehallways?No,wecan’t.Canwewearahatintheclassroom?No,wecan’t.1.Wecaneatinclass.2.Wedon’thavetocometoschooleveryday.3.…3c.Makeupfivecoolrulesforyourdreamschool.Shareyourruleswiththeclass.YourclassmatesvotefortheCoolestSchool!Atmydreamschool,wedon’thavetocometoschooleveryday.We…PressconferenceDearstudents,Inordertohaveagoodenvironment(环境),weshouldhavesomerulesinourschool.Herearesomesuggestions;wehopethatallofuscanhavealookatthem.1.Don’tsleepinclass.2.Cleantheclassroomeveryday.3.__________________________4.__________________________5.__________________________6.__________________________Yours____假如你是学校的校长,你想制订哪些校规,将其记录并尝试告诉校长你的想法。用所给单词的适当形式填空。1.Don’t________(listen)tomusicinthelibrary.2.Dowehaveto________(clean)theroomeveryday?3.Youcan’t________(wear)sunglassesintheclassroom.4.Please________(arrive)atschoolontime(准时).5.Johnisoftenlatefor_______(class).classlistencleanweararrive将下面的句子改为祈使句，每空一词。1.Youcancomein.__________,please.2.Icanhelpyou._____me______you.3.Youcan’teatinclass.____________inclass.4.Youcan’tbelateforschool.__________lateforschool.5.Youcan’ttakephotoshere.____photoshere.ComeinLethelpDon’teatDon’tbeNo1.ReviewthesentencemodelsinGrammarFocus.2.CollectmuchmoresignsyouseeinyourdailylifeandtrytodescribetheminEnglish.(搜集更多你在生活中遇到的标志,试试用英语翻译。)