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Unit4Don’teatinclass.教学课件设计洪江市托口中学刘利群Unit4Don’teatinclass.SectionAgrammarfocus—3cWhatdowehavetodoatschoolorintheclassroom?Whatcan’twedo?Let’slookandsaysomeschoolorclassrulers.教师寄语：Norules,nostandards.(没有规矩不成方圆。）Wehavetodosomereadingeverymorning.Wehavetoexerciseeveryday.Wehavetoworkhardandhelpeachother.Wehavetocleanourclassroomandkeepitcleaneveryday..WehavetowearourschoolIDcard.Wehavetodohomeworkafterschool.Don’tfightwithothers.=Wecan’tfightwithothers.Don’tarrivelateforclass.=Wecan’tarrivelateforclass.Wecan’teatinclass.=Don’teatintheclassroom.Don’thavelonghairforboys.=Boyscan’thavelonghair.Don’tsleepinclass.=Wecan’tsleepinclass..Wecan’truninthehallways.=Don’truninthehallways.Don’tplaysportsintheclassroomorinthehallways.Butwecanplayitoutside.Don’ttalkinclass.Don’ttalkwitheachotherinclass.Stoptalkinginclass.Don’tsmoke.It’sbadforyourhealth.Don’tplaycardsatschool.Don’tlistentomusicintheclassroom.Let’stalkaboutourfamilyrules.eatinbedwatchTVlatetalkloudlyonthephonegetuplateonSundaysplaycomputergameslateatnightsingloudlyatnightmakethebedaftergettingupcleanthebedroomA:Whatdoyouhavetodoathome?B:Wehaveto…A:Whatcan’tyoudo?B:Wecan’t…Don’truninthehallways.Don’tfight.Whataretherules?Wemustbeontimeforclass.Canweeatintheclassroom?No,wecan’t,butwecaneatinthedininghall.Canwewearahatinclass?Yes,wecan./No,wecan’t.Doeshehavetowearauniformatschool?Yes,hedoes./No,hedoesn’t.GrammarFocusWhatdoyouhavetodo?Wehavetobequietinthelibrary.情态动词can的用法1)表示能力“会,能”Canyouplaytheguitar?你会弹吉他吗？JimcanspeakChinese.吉姆会说中文。Icandanceandsing.我能唱歌又能跳舞。2)表示允许、许可,“可以”、“能”Canthestudentsruninthehallway学生们可以在走廊上跑吗？Wecaneatoutside.我们可以在外面吃东西。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。haveto的用法表示客观的必要性：“必须，不得不”，在一定意义上与must可以互换。must没有人称，数和时态的变化。haveto有人称，数和时态变化。Wehavetodohomeworkafterschool.Theymustbeontimeforclass.Shehastobequietinthelibrary.Doyouhavetogotoschoolontime?注意:haveto在否定句中,直接在haveto前面加don’t,在一般疑问句中,在主语前面加助动词do,并且有人称，数和时态的变化。肯定祈使句Sitdown.Comein.Eatathome.Let’sgohome.否定祈使句Don’tsitdown.Don’tcomein.Don’teatathome.Don’ttalkinclass.祈使句用来表示请求、命令、叮嘱、号召或者劝告等,主语常是第二人称you,也就是听话者,因而you常省去。祈使句的开头是动词原形。句首或句末加上please，若在句末加please，之前要用逗号隔开。祈使句的否定形式多以donot(常缩写成don’t)开头,再加上动词原形。1.Sitdown.2.Comein.3.Eatathome.Don’tsitdown.Don’tcomein.Don’teatathome.把下列祈使句改成否定句Practice:4.Listentomusicoutside.5.Doyourhomeworkatschool.Don’tlistentomusicoutside.Don’tdoyourhomeworkatschool.1.late,don't,forschool,arrive2.music,listento,intheclassroom,don't3.eat,can't,intheclassroom,weDon’tarrivelateforschool.Don’tlistentomusicintheclassroom.Wecan’teatintheclassroom.Formsentences.组句Don’tsmoke.Nosmoking!Don’ttakephotos.Nophotos!Pleaseturnright!Doyouknowthese?Don’tparkhere.Noparking.Don’tturnleft.Don’ttalkloudly!Don’ttalk!Notalking!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.3cMakeupfivecoolrulesforyourdreamschool.Shareyourruleswiththeclass.YourclassmatesvotefortheCoolestSchool!Atmydreamschool,wedon’thavetocometoschooleveryday.We…Thebestschoolrules1.Wecaneatinclass.2.Wedon’thavetocometoschooleveryday.3.4.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’tbeNoSummary:1.情态动词can的用法2.肯定祈使句和否定祈使句祈使句的常见句型结构3.通过谈论校规、家规及图书室规则，进一步掌握祈使句的用法，学会拟定规则，逐渐养成自觉遵守校纪班规的好习惯。