七年级英语下册 Unit 4 Don’t eat in class Section A句法语法课件 （新版）人教新目标版.ppt

1、Donteatinclass.SectionA句法语法,John:Hi,mynamesJohn.Itsmyfirstdayatschool.Alice:Hi,John.ImAlice.Thisisagreatschool,buttherearealotofrules.John:Really?Whataresomeoftherules?Alice:Well,dontbelateforclass.Thisisveryimportant.John:OK,sowemustbeontime.Canwebringmusicplayerstoschool?Alice:No,wecant.Andwealway

2、shavetoweartheschooluniform.John:Isee.Alice:Oh,andwealsohavetobequietinthelibrary.,John:Hi,mynamesJohn.Itsmyfirstdayatschool.Alice:Hi,John.ImAlice.Thisisagreatschool,buttherearealotofrules.John:Really?Whataresomeoftherules?Alice:Well,dontbelateforclass.Thisisveryimportant.John:OK,sowemustbeontime.Ca

3、nwebringmusicplayerstoschool?Alice:No,wecant.Andwealwayshavetoweartheschooluniform.John:Isee.Alice:Oh,andwealsohavetobequietinthelibrary.,Dontbelateforclass.,祈使句：表示命令、请求、建议或劝告的句子。肯定：（1）动词原形+其他Standup,please.请起立。（2）Be+adj.Becareful!小心！（3）Letsb.+动词原形Letsgotoschooltogether.咱们一起上学去吧。,否定：（1）Dont+动词原形Dont

4、standup.别站起来。（2）Letsb.+not+动词原形Letthemnotplaywithfire.别让他们玩火。（3）No+名词/doingNofishing.禁止垂钓。,-Canwebringmusicplayerstoschool?-No,wecant.can（情态动词）“能够、可以”Wecaneatinthedininghall.Butwecanteatinclass.,表示请求允许,Wealsohavetobequietinthelibrary.haveto“不得不、必须”，侧重客观需要。must“必须、应该”，侧重主观要求。Ihavetodomyhomeworknow.Id

5、onthavetodomyhomeworknow.Doyouhavetodoyourhomeworknow?Yes,Ido./No,Idont.,Youmustgohomenow.Youmustntgohomenow.MustIgohomenow?Yes,youmust.No,youneednt./No,youdonthaveto.,完成句子,1._playinthestreet.不要在大街上玩。2.I_lookaftermysister.我不得不照顾我的妹妹。,Dont,haveto,单项选择,()1.Wecaneatinthedininghall.Butwe_eatintheclassroom.A.dontB.didntC.cantD.arent()