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SectionAPeriodThreeDon’tsmoke!Don’tfight.Don’tlistentomusicintheclassroom!intheclassroomDon’teatintheclassroom.intheclassroomDon’ttakephotoshere.Nophotos!Don’tarrivelateforclass.Don’ttalkinthelibrary!Notalking!inthelibraryDon’ttalkloudlyinpublic!inpublic(在公共场所)Don’tarrivelateforschool.Don’teatintheclassroom.Youmusteatinthedininghall.Don’tdrawonthewall,please.Don’tfight.Don’thavelonghairforboys.男生不准留长发。Libraryrules1.Don’ttalk.2.__________3.__________________4._________________Don’teat.Writetherulesfortheschoollibrary.3aDon’tlistentomusic.Don’ttakephotos.Usethewordstomakequestionsabouttherules.Thenwriteanswersaccordingtoyourschool.3b1.Bequite?Q:Doesshehavetobequiteinthelibrary?(she/haveto/inthelibrary)A:Yes,shedoes.2.Eat?Q:________________________________(he/haveto/inthedininghall)?A:_________________________________Doeshehavetoeatinthedininghall?No,hedoesn’t.Hecanalsoeatoutside.3.Listentomusic?Q:________________________________(we/can/inthehallways)?A:________________4.Wearahat?Q:_______________________________(we/can/intheclassroom)?A:_______________Canwelistentomusicinthehallways?Canwewearahatintheclassroom?No,wecan’t.No,wecan’t.Makeupfivecoolrulesforyourdreamschool.Shareyourruleswiththeclass.YourclassmatesvotefortheCoolestSchool!3c1.Wecaneatinclass.2.Wedon’thavetocometoschooleveryday.3.…情态动词can的用法1)表示能力“会,能”Canyouplaytheguitar?你会弹吉它吗？JudycanspeakalittleChinese.朱蒂会说一点中文。Icandanceandsing.我能唱歌又能跳舞。词语链接2)表示允许、许可等。Canthestudentsruninthehallways?学生们可以在走廊上跑吗？Wecaneatoutside.我们可以在外面吃东西。3）表示请求CanIhelpyou?注意:和大部分情态动词一样,can在否定句中,直接在can后加上not,在疑问句中,把can放到主语前面,并且没有人称和数的变化。祈使句是用来表示请求、命令、叮嘱、号召或者劝告等的句子,这类句子的主语常是第二人称you,也就是听话者,因而you常省去了。祈使句的开头是动词原形。可在句首或句末加上please，若在句末加please，之前要用逗号隔开。祈使句有肯定祈使句与否定祈使句两种。如:Lookout!小心！Waithereforme!在这等我！Besuretocomehereontime!务必准时来到这里！Listentomusicoutside.Don’tlistentomusicoutside.Doyourhomeworkatschool.Don’tdoyourhomeworkatschool.祈使句的否定形式多以donot(常缩写成don’t)开头,再加上动词原形。1.肯定祈使句的常见句型结构：①Do型：动词原形+宾语+其他.如：Openthedoor,please.②Be型：Be+表语.如：Beagoodboy!③Let型：Let+宾语+动词原形+其他.(或：Let’s+动词原形+其他.)如：Letmehelpyou.又如：Let’splaytennis.2.否定祈使句的常见句型结构：①Do型和Be型的否定式：Don’t+动词原形/be+其他.如：Don’tforgetme.又如：Don’tbelate.②Let型的否定式：Don’t+let+宾语+动词原形+其他.(或：Let’s+not+动词原形+其他.)如：Don’tlethimgoback.又如：Let’snotgoswimming.③警示语：No+名词/动词-ing形式.如：Notalking.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.late,don't,forschool,arrive2.music,listento,intheclassroom,don't3.eat,can't,intheclassroom,weDon’tarrivelateforschool.Don’tlistentomusicintheclassroom.Wecan’teatintheclassroom.Ⅲ.Formsentences.组句1._______fightwithothers.A.NotB.NoC.Don’tD.Doesn’t2.---_____weeatinthedininghall?---Yes,we_____A.Do,doesB.Can,doC.Do,canD.Can,can3.Youcan’teat_____outside.A.atB.\C.inD.on4.Listentomusicinhallways.(改为否定句)listentomusicinhallways.5.Don’tarrivelateforclass.(改为同义句)Don’t_____________forclass.Don’tbelateWritedowntensentencesaboutwhatyoucanorcan’tdoinyourhouse.Wecan’teatinbed.Wecan’tfight....