Unit7第三课时SectionA2d-Grammarfocus课件人教版英语九年级全册

Unit7Teenagersshouldbeallowedtochoosetheirownclothes?Period2SectionA2dgrammarfocusobjectivesMasteranduse“beallowedtodo”

Talkwithyourclassmatesaboutyourschoolrulesbyusing“studentsarenotallowedto…”.

掌握并能应用含情态动词的被动语态Tolearnsomenewwordsandphrases:flash,community,chance,educate,keep…awayfrom,makeone’sowndecision温故知新

1.Ithinksixteen—year—oldsshouldbeallowedtowatchTVonweekends.(否)I________sixteen–year-olds_____

_______

allowedtowatchTVonweekends.2.StudentsshouldbeallowedtolistentoMp4inclass.(否)Students___________beallowedtolistentoMp4inclass.3.Heistooyoungtogotoschool.(同义句)Heisn’t____________togotoschool.4.Parentsshouldallowchildrentochoosetheirownhobbies.(被动)Children_________________________choosetheirownhobbies.句型转换don’tthinkshouldbeshouldnotoldenoughshouldnotbeallowed温故知新

1.我认为不应该允许16岁的青少年开车。

I________sixteen-years-olds____________________.2.Mary想穿耳孔。

Marywants______her______3.他应该停止戴那个愚蠢的耳环。Heshould________that___________.4.他需要和朋友们共度时光。He___________________withfriends.完成句子don’tthinkshouldbetogetstopwearingneedstospendtimeallowedtodriveearspiercedsillyearringneed的用法1.Heneedbuyapen.2.Heneedstobuyapen.情态动词实义动词变疑问句:变否定句:变疑问句:变否定句:Needhebuyapen?Doesheneedtobuyapen?Heneedn’tbuyapen.Hedoesn’tneedtobuyapen.need（实义动词）1.Sbneedsth/todosth2.Sthneeddoingsth=sthneedtobedone1.每个人都需要别人的帮助。2.我们的教室需要打扫了。3.他需要两小时来完成作业。4.爷爷的花需要浇水了。有人称和数的变化还有时态的变化Everyoneneedsother’shelp.Ourclassroomneedscleaning.Heneedstwohourstodohishomework.Grandpa’sflowersneedwatering.tobecleaned.tobewatered.1.青少年不应该被允许抽烟。(shouldnotbe)2.16岁的青少年应该被允许开车。(shouldbe)3.学生应该被允许做兼职工作。(shouldnotbe)4.16岁的青少年应该被允许扎耳洞。(shouldbe)5.青少年应该被允许选择自己的衣服(shouldbe)从以上5个句子可以看出，含有情态动词的被动语态结构为：__________________。情态动词+be+doneIdon’tthinksixteen-year-oldsIagree.Theyaren’tshouldbeallowedtodrive.seriousenough.DoyouthinkteenagersshouldbeNo,Idon’tagreewithencouragedtomaketheirownthis.Teenagersaretoodecisions?youngtomaketheirowndecisions.TeenagersshouldnotbeallowedIdisagree.Theycanlearntohavepart-timejobs.alotfromworking.DoyouthinkwemaybeallowedIfyoudon’tuseaflash,totakesomephotosifwedon’tthenitmaybeOK.useaflash?GrammarFocusReadandrecite(读并会背诵)含有情态动词的被动语态句式结构示例肯定句主语+情态动词+be+及物动词的过去分词(+by…)Teenagersshouldbeallowedtogoshopping.否定句主语+情态动词+not+be+及物动词的过去分词(+by…)Thewordcan’tbeusedinthissentence.一般疑问句情态动词+主语+be+及物动词的过去分词(+by…)?Musttheworkbefinishedtoday?特殊疑问句特殊疑问词+被动语态的一般疑问句？Whoshouldbeaskedforhelp?Teenagersshouldbeallowedtochoosetheirownclothes.变否定句变一般疑问句Teenagersshouldn’tbeallowedtochoosetheirownclothes.Shouldteenagersbeallowedtochoosetheirownclothes?Yes,theyshould./No,theyshouldn’t.4aRewritethesentencesaccordingtotheexample.

1.Youmustcleanyourbedroomeveryday.Yourbedroommustbecleanedevery

day.2.Parentsshouldencourageteenagerstodosocialworkfortheircommunity.Teenagers__________________________________________________________.shouldbeencouragedtodosocialworkfortheircommunit3.CanLucydoherhomeworktomorrowinstead?Can__________________________________________________________________?Lucy’shomeworkbedonebyhertomorrowinsteadDoyouthinkwemustkeepteenagersawayfromtheInternet?Doyouthinkteenagers_________________________________________?mustbekeptawayfromtheInternet5.Parentsshouldgiveteenagerschancestomaketheirowndecisions.Teenagers_____________________________________________________.shouldbegivenchancestomaketheirowndecisions4bFillintheblankswiththe

correctformsofthewordsin

brackets.Shouldteenagers__________(ask)tomoveoutwhentheystartworking?InmanyWesterncountries,teenagers____________(allow)tomoveoutateighteen.Theirparentsbelievethattheyshould____________(educate)totakecareofthemselvesfromayoungage.Thisway,whenthey_______(start)workingtheycanmanage

theirownlives.However,inmostAsianbeaskedareallowedbeeducatedstartsocieties,itisnotcommonforteenagersto________(move)out.Chineseparentsbelievethatitisbetterforchildrentolivewithparentswhocan_____(take)careofthem.Buttheyoungshouldthenlookaftertheirparentsastheygetolder.ThatiswhymanyChineseadults________(continue)tolivewiththeirparents.movetakecontinue4cYouandyourfriendarestarting

anEnglishclub.Makealistofrules

aboutwhatshouldandshouldnotbeallowed.

A:Membersshouldbeallowedtousedictionaries.B:Yes,buttheyshouldonlyuseEnglish-Englishdictionaries.

被动语态的构成：be+done被动语态：主语是动作的承受者。一般现在时：一般过去时：一般将来时：当句中含有情态动词时，句子结构为

现在进行时：am/is/arebeingdone过去进行时：was/werebeingdone现在完成时：have/hasbeendone过去完成时：hadbeendoneam/is/aredonewas/weredonewillbedonecan/must/haveto…bedone拓展一下1)Manytrees______________now.2)Thousandsoftrees___________

everyyear.3)Manytrees___________lastyear.4)Manymoretrees_______________since1990.5)Manytrees____________inaweek.6)Theysaidtwohundredtrees_______________sincelastyear.7)Theteachertoldusmanytrees_______________thenextyear.8)Hesaidtwotrees_______________byhimatthistimeyesterday.arebeingplanted

areplantedwereplantedhavebeenplantedwillbeplanted

hadbeenplantedwerebeingplantedwouldbeplantedFillintheblanks:变被动语态的特殊情况一、双宾语buysb.sth=buysthforsbgivesbsth=givesthtosb1.Myfatherboughtmeacomputer.=Myfatherboughtacomputerforme. Acomputerwasboughtformebymyfather.Iwasboughtacomputerbymyfather.2.Hegivesmeabook.=Hegivesabooktome.Abookisgiventomebyhim.Iamgivenabookbyhim.→→→→givesthbegiventosbbuysthbeboughtforsbsbbegivensthsbbeboughtsth

类似动词还有：pass,show…,make,cook…思考1：将下列的主动句变为被动语态：

1．Wegavehimsomebooks.→He

.→Somebooks

.wasgivensomebooks(byus)

weregiventohim(byus)

2.Tomgavemeabirthdaypresent.(改为被动）

=I_________abirthdaypresentbyTom.=Abirthdaypresent___________me.

wasgivenwasgivento二、无to不定式

一感二听三让四看feellistento/hearlet/have/makewatch/see/lookat/notice变为被动时加上toeg.Weoftenseehimplaybasketball.Heisoftenseentoplaybasketballbyus.有些动词很奇怪，主动句中to离开，被动句中to回来。感官动词及使役动词的被动语态Eg.makesbdosth→sbbemadetodosthseesbdosth→sbbeseentodosth3．IusuallyhearhersingEnglishsongsinthemorning.She

inthemorning.isusuallyheardtosingEnglishsongs

4.Isawhimfalloffthetree.

→Hewasseento

falloffthetree.5．Hemakesherhorseworkallday.Herhorse

_______

allday.6.Myfatherletmegooutforapicnic.I

outforapicnic.ismadetoworkwaslettogo

三、注意动词短语的完整性eg.1.Weshouldspeaktotheoldpolitely.Theoldshouldbespokentopolitely.2.Thenursetakesgoodcareofthebaby.Thebabyistakengoodcareofbythenurse.动词短语的被动语态

takecareof

－betakencareofcutdown－becutdownlaughat

－belaughedat

lookafter－belookedafter

listento---belistenedtospeakto---bespokento四、不用被动语态的三种情况：1.不及物动词(vi.)如:happen,takeplace,appear,die,rise,cometrue,comeout…2.连系动词,如:be,look,seem,feel…3.当动词表示事物的自然属性的时候，如：sellwell,growwell,writefast,burneasily…3eg.1.Anaccident

(happen)justnow.happened2.I’msurethatmydream.(cometrue)somedayinthefuturewillcometrue()7.Today,theforestshavealmostgone.Peoplemust____downtoomanytrees.A.stoptocutB.stopfromcuttingC.bestoppedtocutD.bestoppedfromcutting()8.Astrangemanwasseen_____theshopwithaheavybag.A.comeoutofB.tocomeoutofC.cameoutofD.tocomeout()9.ItwasTom’sbirthdayyesterday.He_____manyPresents.A.wasgivenB.wasgiventoC.wasgivenbyD.wasgivenfor()10.Thiskindofbook_____well.They____already.A.sells,have