人教版七年级英语下册 （Don't eat in class）新课件(第2课时)

R七年级下册Unit4Don’teatinclass.

第2课时Lead-inTellothersaboutyourschoolrules.(Youcanfinishitbyyourself/withyourpartner)listentomusicInourschool,wecan’tlistentomusicinclass,butwecanlistentoitafterclass.Inourschool,wecan’tlistentomusicinclass,butwecanlistentoitafterclass.Whataretherulesinyourschool?Role-playGrammarFocusDon’truninthehallways.Don’tfight.Whataretherules?Canweeatintheclassroom?Wemustbeontimeforclass.No,wecan’t,butwecaneatinthedininghall.Canwewearahatinclass?Doeshehavetowearauniformatschool?Whatdoyouhavetodo?Yes,wecan./No,wecan’t.Yes,hedoes./No,hedoesn’t.Wehavetobequiteinthelibrary.祈使句的用法1.祈使句的概念(1)祈使句是指用来表示请求、命令、叮嘱、建议等的句子。

祈使句没有主语，谓语动词用原形，句末使用感叹号或者句号。例：站起来！一定要按时。（命令）(叮嘱)Standup!Besuretobeontime.(2)如果祈使句表示客气地请求，一般要加上please。please可以放在句子前面也可以放在句子的后面。例:请跟我读。Pleasereadafterme.（请求）=Readafterme,please.2.祈使句的形式(1)let开头的祈使句的肯定句：Let’s+not+v.（原形）.例:咱们别那样做了。Don’tletthemcomein.Let’snotdothatagain.否定形式为：Don’t+let+第三人称代词+v.（原形）.例:不要让他们进来。

(2)非let开头的祈使句的肯定句和否定句：肯定句Do型Be型v.原形（+宾语）+其他成份.Be+表语(名词或形容词）+其他成份.例：Listentome,please.请听我说。例：Bequiet,please.请安静。否定句Don’t+行为动词+其他.Don’t+be+其他.No+n./v.-ing.例:Don’tplaycomputergames.不要玩电脑游戏。例:Don’tbelateagain.不要再迟到。例:Nophotos.不许拍照。Noswimming.不许游泳。3.祈使句的用法主语是you常省去，动词原形开头记。否定形式要注意，句首要把don’t加。要讲客气用please,句首、句末没关系。情态动词must与haveto1.情态动词must的用法(1)表示有做某一个动作的必要和义务，它的意思是“必须、应该”。例:你必须做你的作业。

Youmustdoyourhomework.(2)表示有很大把握的判断或者推测，它的意思是“一定、准是”。(3)以must开头的一般疑问句，它的否定回答用needn’t(不必要),不用mustn’t(不允许),mustn’t常用于否定句中，表示“不允许，禁止”。例:那个高个子男人一定是你的爸爸。Thetallmanmustbeyourfather.例:你的车不允许停在这儿。Youmustn’tparkyourcarhere.2.情态动词haveto的用法haveto表示客观需要做的事情，意思是“必须，不得不”。(1)haveto后接动词原形，意为“必须做……；不得不做……”。例:我不得不离开了。Ihavetoleave.(2)haveto有人称、数和时态的变化，其第三人称单数形式为hasto。例:她不得不做作业。Shehastodoherhomework.(3)含有haveto,hasto的句子变疑问句或否定句需分别借助助动词do,does。例:他们必须早起吗？Dotheyhavetogetupearly?Writetherulesfortheschoollibrary.3aLibraryRules1.__________________2.__________________3.__________________4.__________________Don’ttalkDon’teatordrinkDon’tlistentomusicDon’ttakephotosUsethewordstomakequestionsabouttherules.Thenwriteanswersaccordingtoyourschool.3bBequiet?(she/haveto/inthelibrary)Q:Doesshehavetobequietinthelibrary?A:Yes,shedoes.

2.Eat?(he/haveto/inthedinninghall)Q:_________________________________________A:_________________________________________Doeshehavetoeatinthedininghall?Yes,hedoes.3.Listentomusic?(we/can/inthedininghall)Q:_________________________________________A:_________________________________________4.Wearahat?(we/can/intheclassroom)Q:_________________________________________A:_________________________________________Canwelistentomusicinthedininghall?No,youcan’t.Canwewearahatintheclassroom?No,youcan’t.Makeupfivecoolrulesforyourdreamschool.Shareyourruleswiththeclass.YourclassmatesvotefortheCoolestSchool!3c1.Wecaneatinclass.2.Wedon’thavetocometoschooleveryday.3.…Atmydreamschool,wedon’thavetocometoschooleveryday.Wecaneatinclass.We…Languagepoints1.Wedon’thavetocometoschooleveryday.

我们不必每天来学校。haveto为固定短语，意为“不得不，必须”，其后接动词原形，有时态和人称的变化。haveto的否定形式是：主语+don’t+haveto+动词原形+其他.（一般现在时，当主语是第三人称单数时，用doesn’tto，—般过去式用didn’thaveto)Exercise一.单项选择()1.______withfire.It’sverydangerous.

A.Playing

B.PlayC.Don’tplayD.Doesn’tplay

()2.Thechildren_____playfootballontheroad.

A.can

B.must

C.mustn’t

D.mayCC()3.Mysister______beatschoolbyseveno’clock.

A.hasto

B.haveto

C.hadto

D.mustto

()4.It’srainingallday,somybrother______stayathome.

A.must

B.haveto

C.mustto

D.hasto

AD()5.It’sverywarmoutside.You______wearthecoat.A.havetoB.hadn’ttoC.don’thavetoD.mustn’t()6.Mary,______inbed.A.notreadB.don’treadC.noreadingD.doesn’treadCBR七年级下册Unit4Don’teatinclass.

Lead-inDoyouhaveanyrulesathome?Doyouhavetodoyourhomeworkfirstafterschool？CanyouwatchTV?Doyouhavetoplaythepiano？Canyouplaywithyourfriends?Readtherulesinthechartin1b.Thenmatchthepictures[a-h]withtherules.1a___

goout___seefriends___dohishomework___practicetheguitar___dothedishes___watchTV___helphismommakebreakfast___cleanhisroom___

goout___seefriends___dohishomework___practicetheguitar___dothedishes___watchTV___helphismommakebreakfast___cleanhisroomahcebgdfListenandputan×forthingsDavecan’tdoanda√forthingshehastodo.1bRulesCan’t(×)Haveto/must(√)gooutseefriends××dohishomeworkpracticetheguitardothedisheswatchTVhelphismommakebreakfastcleanhisroom√√√×√√Listenagain.WritewhenDavehastofollowtherulesinthechartin1b.Choosefromthephrasesinthebox.1conschoolnightsonschooldayseverySaturdayafterdinnerbeforedinnerafterschoolintheeveningeverymorningRulesWhengooutseefriendsdohishomeworkpracticetheguitaronschoolnightsonschooldaysafterschoolbeforedinnerdothedisheswatchTVhelphismommakebreakfastcleanhisroomafterdinnereverymorningeverySaturdayintheeveningTalkabouttherulesinDave’shouse.1dCanDavegooutonschoolnights?No,hecan’t.CanhewatchTVintheevening?No,hecan’t.Doeshehavetopracticetheguitarbeforedinner?Yes,hedoes.Languagepoints1.helphismommakebreakfast帮他的妈妈做早饭helpsb.(to)dosth.帮助某人做某事helpsb.withsth.例:我帮妈妈做家务。Ihelpmymomdohousework.=Ihelpmymomwithhousework.makebreakfast做早饭make的多种语意：makethe/one’sbedmaketeamakedumplingsmakefriendsmakerulesmakeanoise做，制作整理床铺沏茶包饺子交朋友制订规则制造噪音2.onschoolnights在上学期间的晚上night介词on介词at泛指在晚上指具体的某个晚上,需有其他词修饰例:在冬天的晚上