Unit4Don'teatinclassSectionA1a3c课件人教版七年级英语下册

Knowledgeaims：(1)Studentscanmastertheimperativesentenceandstudymodalverb“can”，“haveto”，“must”.(2)StudentscanunderstandthefunctionsofImperativeSentenceinpositivepattern“do”andinnegativepattern“don’t”.Abilityaims:Studentscanuseimperativesentence“Do/Besth.”,“Don’tdo/besth.”,andmodalverbs“can”and“havetodo”todiscussschool,familyrulesandsoon.Emotionalaims:Studentscandevelopandstrengthentheirawarenessofobeyingtherulesinpublic.Unit4Don’teatinclassDon’tsmoke./Nosmoking.禁止吸烟Don'ttakepictures/Nophotography.禁止拍照Bequiet.禁止喧哗Doyouknowthesesigns?Let’slearnsomeschoolrules!Canwebelateforclass?No,wecan’t.Rule1Wecan’tarrivelateforclass.Wemustbeontime.Don’tarrivelateforclass.Youmustbeontime.arrivev.到达ontime准时Canweruninthehallways?No,wecan’t.Wecan’truninthehallways.Rule2Don’trun

inthehallways.hallwayn.走廊；过道Canweeatintheclassroom?No,wecan’t.Wecan’teatintheclassroom.Rule3Don’teatintheclassroom.

You

must

eat

in

the

dining

hall.Canweeatinthedininghall?Yes,wecan.Wecaneatinthedininghall.dininghall餐厅Canwelistentomusicinclass?No,wecan’t.Wecan’tlistentomusicinclass.Rule4Don’tlistentomusicinclass.listenv.听；倾听listento…听……Canwefight？No,wecan’t.Wecan’tfight.Rule5Don’tfight.fightv.&n.打架；战斗Let’smatch！1.Don’tarrivelateforclass.Youmustbeontime.2.Don’trun

inthehallways.3.Don’teatintheclassroom.

You

must

eat

in

the

dining

hall.4.Don’tlistentomusicinclass.5.Don’tfight.5342John:Hi,myname'sJohn.It'smyfirstdayatschool.Alice:Hi,John.I'mAlice.Thisisagreatschool,buttherearealotofrules.John:Really?Whataresomeoftherules?Alice:Well,don'tbelateforclass.Thisisveryimportant.John:OK,sowemustbeontime.Canwebringmusicplayerstoschool?Alice:No,wecan’t.Andwealwayshavetoweartheschooluniform.John:Isee.Alice:Oh,andwealsohavetobequietinthelibrary.Role-playtheconversation！importantadj.重要的wearv.穿；戴bringv.带来；取来uniformn.校服；制服quietadj.安静的havetoWhataretherulesintheconversation?1.Don’tbelateforclass.Wemustbeontime.

can’tbringmusicplayertoschool.3.Wealwayshavetoweartheschooluniform.4.Wealsohavetobequietinthelibrary.必须；不得不Don’truninthehallways.Don’tfight.Canweeatintheclassroom?No,wecan’t,butwecaneatinthedinninghall.Canwebringmusicplayerstoschool?Yes,wecan/No,wecan’t.Doeshehavetowearauniformatschool?Yes,hedoes./No,hedoesn’t.Whataretherules?Wemustbeontimeforclass.Whatdoyouhavetodo?Wehavetobequietinthelibrary.What

can

you

find?祈使句(imperativesentence),表示请求、命令、建议、祝愿、邀请或要求的句子。句子没有主语，其中句首的动词要用原型。Don’truninthehallways.Don’tfight.动词原形＋其他，它的否定形式为：don't＋动词原形（肯定）Openthewindow.（否定）Don‘topenthewindow.（肯定）Listentomusic.实意动词Be动词（肯定）Bequiet.（否定）Don‘tbelate.V.V.（否定）Don‘tlistentomusic.What

can

you

find?Canweeatintheclassroom?No,wecan’t,butwecaneatinthedinninghall.Canwebringmusicplayerstoschool?Yes,wecan/No,wecan’t.can是情态动词,意为“能;会”,表示一个人具备的能力。如：Icanplaythepiano.can还可以表示请求或允许,意为“能；可以”。如：Canwelistentomusic?What

can

you

find?Doeshehavetowearauniformatschool?Yes,hedoes./No,hedoesn’t.Whataretherules?Wemustbeontimeforclass.Whatdoyouhavetodo?Wehavetobequietinthelibrary.haveto（modalverb情态动词）必须；不得不must（modalverb情态动词）必须；一定Whataretheirsimilarities(相同点）anddifferences（不同点）?What

can

you

find?

similarities：+动词原形Wemustbeontime.Wehavetoweartheuniform.differences：must表示主观上认为有义务或有责任必须做某事，强调说话人的主观看法，如：Everyonemustobeythetrafficrules.haveto表示由于客观因素而不得不做某事，强调客观需要,含有“不得不”或“被迫之意”。如：Alice’shomeisveryfarfromherschool,soshehastohavelunchatschool.

haveto有人称、数、时态的变化,如：Hehastoweartheuniform.Hehadtolookafter（照顾）hissisteryesterday.must只有一种形式。在否定结构中：don‘t/doesn’t/didn’t

haveto表示“不必”，如：Youdon'thavetotellhimaboutit.mustn‘t表示“禁止”,如：Lookatthesign.Youmustn’tparkhere.Doeshehavetowearauniformatschool?Let’spractice!Changethefollowingimperativesentencesintothenegativeform.把下列祈使句改成否定形式。Beontime.

2.Eatinthedininghall.3.Talkloudly.Usethewordstomakequestionsabouttherules.Thenwriteanswersaccordingtoyourschool.1.Eat?(he/haveto/inthedininghall)?Q:A:2.Wearahat?(we/can/intheclassroom)?Q:A:

Don’tbeontime.Don’teatinthedininghall.Don’ttalkloudly.Doeshehavetoeatinthedininghall?Yes,hedoes.Canwewearahatintheclassroom?No,wecan’t.Translatethefollowingsentences.翻译下列句子。2.外面很冷，我必须带上帽子。（outside，hat）2.我们必须每天打扫教室。。Whataretherulesatyourschool?It’scoldoutside.Imustwearmyhat.Wehavetocleantheclassroomeveryday.Doyouknowanyotherrules?Whydoweneedtheserules?Let’shavearace!Onegroupofboys,onegroupofgirls,letmeseewhoknowsmorerules.