Unit4Don’teatinclass.SectionAPeriodTwoDon’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。John:Hi,myname’sJohn.It’smyfirstdayatschool.Alice:Hi,John.I’mAlice.Thisisagreatschool,buttherearealotofrules.John:Really?Whataresomeoftherules?Alice:Well,don’tbelatefortheclass.Thisisveryimportant.John:OK,sowemustbeontime.Canwebringmusicplayerstoschool?2d.Role-playtheconversation.Alice:No,wecan’t.Andwealwayshavetoweartheschooluniform.John:Isee.Alice:Oh,andwealsohavetobequietinthelibrary.Don’truninthehallways.Whataretherules?Wemustbeontimeforclass.-Canweeatintheclassroom?-No,wecan’t,butwecaneatinthedininghall.-Canwewearahatinclass?-Yes,wecan./No,wecan’t.-Doeshehavetowearauniformatschool?-Yes,hedoes./No,hedoesn’t.-Whatdoyouhavetodo?-Wehavetobequietinthelibrary.GrammarFocus注意havetoThey_______wearauniformeveryday.Yes,____.Lookandsay.Doyouhavetowearauniformeveryday?havetoNo,______.IdoIdon’tI_______dohomeworkeveryday.havetoI______________________onweekends.havetocleanmybedroomLibraryrules1.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....
