Unit4 Don't eat in class. Section A Grammar 2a-2c-人教新课标七年级英语下册

Unit4Don'teatinclass(grammarfocus-3c)

GrammarFocus.我们可以如何表达规则？祈使句情态动词GrammarFocus.祈使句如何表达规矩？Don't+V原....GrammarFocus.如何使用情态动词表达规矩？主语+must+V原主语+haveto+V原主语+can't+V原GrammarFocus.haveto在句法上与其他情态动词有何区别？haveto有人称和数的变化。haveto/hastoLet’sthinkandtalk.

_____wearrivelateforclass?

No,we____.We____beontime._____arrivelateforclass.CanDon’tcan’tmustCanDon’tcan’tmustLet’sthinkandsay._____weruninthehallways?

No,we_____.We_____walk._____runinthehallways.CanDon’tcan’tmustCanDon’tcan’tmustLet’sthinkandsay._____welistentomusicinclass?No,we_____.We_____listentoourteacher._____listentomusicinclass.CanDon’tcan’tmustCanDon’tcan’tmustLet’sthinkandsay._____wefight?

No,we_____.We_____befriendlytoeachother._____fight.

CanDon’tcan’tmustCanDon’tcan’tmustLet’sthinkandsay._____wesleepinclass?

No,we_____.We_____listentotheteachercarefully._____sleepinclass.

CanDon’tcan’tmustCanDon’tcan’tmustLet’sthinkandsay._______________inclass?

No,__________._______________inthedininghall.__________inclass.

CanDon’tcan’tmustCanDon’tyoumustweeatcan’tYoueateat1.不要在楼道里跑。_______________________2.不要打架。_______________3.有什么规则？__________________________4.我们必须按时上课。__________________________阅读GrammarFocus，完成下列句子。Don’tfight.Don’truninthehallways.Whataretherules?Wemustbeontimeforclass.5.我们可以在教室里吃东西吗？

_____________________________6.不能。但我们可以在餐厅里吃东西。____________________________________________________________7.我们可以在上课的时候带帽子吗？___________________________Canwewearahatinclass?No,wecan’t,butwecaneatinthedininghall.Canweeatintheclassroom?8.他在学校里必须穿校服吗？_________________________________9.是的，必须。/不，不必。_______________________________10.你们必须做什么？_______________________________11.在图书馆里我们必须保持安静。

________________________________Yes,hedoes./No,hedoesn’t.Doeshehavetowearauniformatschool?Whatdoyouhavetodo?Wehavetobequietinthelibrary.haveto“必须、不得不”肯定句：我们必须要做作业Wehavetodohomework.否定句：...don’t/does't

have

to...你可以不用戴帽子。Youdon'thavetowearahat.一般疑问句：do/does+主语＋have

to...他必须要要穿校服吗？Doeshehavetowearauniform？=needn’t...一、祈使句的肯定式1.以行为动词原形开头，Do型。e.g.Comehere.到这儿来。2.以动词be开头，Be型。e.g.Bequiet,please.请安静。3.以Let开头，Let型。e.g.Let’sgo!咱们走吧!

二、祈使句的否定式否定式都可以在句首加don’t。不要坐在这儿。Don’tsithere.别迟到。Don’tbelate.不要让他走。Don’tlethimgo.注意：“No+名词/doing形式”表示禁止或规劝，常用于公共场所。禁止拍照！Nophotos!禁止吸烟！Nosmoking！

Let’spractice.Lookatthepicturesin3aandanswerthequestions.12341.Whatdothepicturestellus?2.Wherecanyouseethesesigns?3.Canwetalkloudly/eat/listentomusic/takephotosinthelibrary?Let’spractice.Writetherulesfortheschoollibrary.1234

LibraryRules1.____________________________2.____________________________3.____________________________4.____________________________Don’ttalk.Don’teatinthelibrary.Don’tlistentomusicinthelibrary.Don’ttakephotosinthelibrary.拓展Writealettertoyourparentsabouttherulesathome.Letthemknowyourideas.Forexample：Befriendly.Savewater.Don’tgooutatnight.Don’teatinthebed.Don’tsleeptoolate.Don’twastemoney.Don’ttalkloudly.Don’tkeepanimals.Don’ttalkloudlyonthephone.Don’twatchTVlateatnight.CleanthebedroomonSaturdays.Don’tgetuplateonSundays.Don’ttalkloudlyatnight.Dearparents,

Iknowyoulovemeverymuch.NowI’vegrownup(长大).

Weshouldrespect(尊重)eachother.Ihavesomesuggestions(建议)foryou._____________________________________________________________________________________________________________________

Willyoulistentome?2.Eat?(he/haveto/inthedininghall)Q:________________________________?A:_____________3.Listentomusic?(we/can/inthehallways)Q:________________________________?A:_____________4.Wearahat?(we/can/intheclassroom)Q:_____________________________?A:____________Thenanswerthequestions.Yes,hedoes.DoeshehavetoeatinthedininghallCanwelistentomusicinthehallwaysNo,wecan’t.CanwewearahatintheclassroomNo,wecan’t.I.将下面的句子改为祈使句，每空一词。1.Youcanstandup.__________,please.2.Icanhelpyou._____me______you.3.Youcan’ttalkinclass.____________inclass.4.Youcan’tbelateforclass.__________lateforclass.

StandupLethelpDon’ttalkDon’tbe1.--Canthestudentseatintheclassroom?(作否定回答)--No,___________.2.TomhastoplaybasketballeveryFriday.(改为一般疑问句)_____Tom________playbasketballeveryFriday?theycan’tDoes

havetoII.按要求完成句子，每空一词。3.Youcan’twea