英语人教版九年级全册Unit7 Section A Grammar Focus.pptx

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1、Unit7Teenagersshouldbeallowedtochoosetheirownclothes.雷栖Canyoutellussomeofthem?I’mallowedto…I’mnotallowedto…travelalonehaveapart–timejobsmokegooutatnightgetearspiercedchoosemyownclothesStudentsshouldnotbeallowedtotakemobilephonestoschool.Doyouagreeordisagree?A:Doyouthinkteenagersshouldb

2、eallowedtotakemobilephonestoschool?B:No,Idon't/Idisagree.Idon’tthinkteenagersshouldbeallowedtotakephonestoschool.Becausetheyshouldlistentoteachercarefully.Studentsshouldbeallowedtochoosetheirownclothes.Studentsshouldnotbeallowedtohavepart-timejobs.Studentsshouldnotbeallowedtogooutatnig

3、ht.A:Doyouthinkteenagersshouldbeallowedto......?B:Yes,Ido/agree.Ithinktheyshould...Because........No,Idon't/Idisagree.Idon’tthinktheyshould….Because.......GrammarFocusIdon’tthinksixteen-year-oldsshouldbeallowedtodrive.Iagree.Theyaren’tseriousenough.Doyouthinkwemightbeallowedtotakesomep

4、hotos?Idon’tthinkso.Photo-takingisnotallowedinthemuseum.Doyouthinkteenagersshouldbeencouragedtomaketheirowndecisions?No,Idon’tagreewiththis.TeenagersaretooyoungtomaketheirowndecisionsTeenagersmustnotbeallowedtohavepart-timejobs.Idisagree.Theycanlearnalotfromworking◆温故◆在英语中，动词有两种语态，即主动语

5、态和被动语态。主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者。在前面两个单元我们已经学习了一般现在时的被动语态和一般过去时的被动语态，它们的结构为：are/is+及物动词的过去分词,were/was+及物动词的过去分词。含有情态动词的被动语态◆知新◆本单元我们主要了解含有情态动词的被动语态。它的结构是什么呢？观察下面例句中含情态动词被动语态的各种形式，然后补全结论中所缺的内容。【例句】1.Manytreesshouldbeplantedinthemountains.应该在山上种许多树。2.Youcantakethisbookhome.（改为被动语态）

6、→Thisbookcanbetakenhome(byyou).【结论】A.含有情态动词的被动语态的结构为：情态动词+___+及物动词的________。B.含有情态动词的主动语态变为被动语态时，要把主动语态的_____变成被动语态的主语。C.变为否定句时只需要在情态动词后加_____。D.变为一般疑问句时只需把________提到句首。be过去分词宾语not情态动词按要求完成下列各句，每空一词（含缩写）。1.Wemustdotheworkrightnow.（改为被动语态）__________________rightnow.2.Teenagersshouldbeal

7、lowedtogooutwiththeirfriendsonschoolnights.（改为否定句）Teenagers__________________togooutwiththeirfriendsonschoolnights.Theworkmustbedoneshouldn’tbeallowed结构:肯定：情态动词+be+动词的过去分词否定：情态动词+not+be+动词的过去分词一般疑问句：情态动词+主语+be+动词的过去分词？特殊疑问句：疑问词+情态动词+主语+be+动词的过去分词？情态动词的被动语态4aRewritethesentencesaccordi