Unit5Discoverusefulstructures主语从句导学案高中英语人教版选择性

名词性从句——主语从句一、学习目标：通过学习，让同学们掌握并熟练运用主语从句。二、学习重点：学生掌握主语从句的定义及引导词的用法。三、学习难点：学生能运用主语从句准确地翻译句子。教学过程：找出主语并分析由什么充当：1.Janeisgoodatplayingthepiano.2.Toseeistobelieve.3.Smokingisbadforhealth.4.Sevenarekilledintheaccident.5.Hewenttoschoolbybike.6.Whathehassaidistrue.主语从句的定义：在复合句，充当句子主语的从句叫主语从句。主语从句的连接词：1)从属连词___________________________________________2)连接代词___________________________________________3)连接副词___________________________________________找出下列句子的主语从句及连接词：1.Thathewilleiscertain.2.Whetheritwillpleasethemisnoteasytosay.3.Whatseemseasytosomepeopleseemsdifficulttoothers.4.Whichsidewillwinisnotclear.5.Whyhediditremainsamystery.6.Whentheywillstartisnotknownyet.7.Howhebecameagreatscientistisknowntousall.8.Whowilltakepartinthemeetinghasnotbeendecided.9.Whoeverbreaksthelawwillbepunished.10.Wheresheisfromisunknown.主语从句连接词的选用一、从属连词that,whether1._______hecanwinisnotknown.2._______theboystudyhardmakestheteacherhappy.总结that、whether的用法：that仅起______作用，_____意义，在从句中______句子成分，______省略。whether表“______”的意思,_____句子成分。______省略。不能用if替换。二、连接代词who,whom,what,whose,which1.______makethemhappywasthattheypassedtheexam.2.______Ilikemostisyourhairstyle.3.______thegirlisremainsamystery.4.______moneywaslostisunknown.5.______bookIshallchoosehasn’tbeendecided.总结连接代词的用法：what指物，在从句中常可作_________________，表示“…的东西/样子/事情/所说的话”who指人，在从句中常可作__________________，作宾语时可用whomwhose常用作__________which可作__________________，表示“哪一个”三、连接副词when,where,why,how1.____theyleavetheclassroomhasn’tbeendecided.2.____it’ssostrangeisnotknown.3.____hekeepshealthyisasecret.总结连接副词的用法：当主语从句中主语、宾语、表语具备，但是还是要表示疑问含义，可以判断句子中缺少状语，常常用相应的特殊疑问词引导，有when,where,how,why等，它们在表语从句中分别充当_____、_____、_____、_____状语，本身具有词义,不可省略。注意：疑问词+ever也可引导主语从句，但不含疑问，往往含有强调作用，意思是“无论…”whoever无论谁whatever无论什么whichever无论哪个whenever无论什么时候wherever无论哪里,它们在句子中担任成分，不能省略，语序为陈述语序。如：_______seestheboyisattractedbyhim.it作形式主语一般来说主语从句都是放在,但有时为了使句子,避免“头重脚轻”,常用作，从而把主语从句(通常是that引导的主语从句)放在。that不能省略。常见句型为：(1)It+be+形容词(true,necessary,likely,stranger,important,obvious,possible,certain…)+that从句__________________somethinghasgonewrongwithmyphone.可能我的出故障了。___________________hewasnotsatisfiedwithmyanswer.很明显他对我的回答不满意。【注意】Itisnecessary/important/strange/natural+that从句,常用虚拟语气,即从句谓语用“(should)+动词原形”。__________________you______________yourvocabulary.你有必要扩大你的词汇。奇怪，他竟然做那样的事。(2)It+be+名词词组(nowonder,anhonor,apity,agoodthing,nosurprise,ashame…)+that从句____________遗憾你错过了昨晚举行的会议。_________________ourteamhaswonthegame.我们队赢得这场比赛不足为奇。(3)It+be+过去分词(said,believed,reported,thought,suggested,expected,announced,decided,arranged…)+that从句_______________hehasgoneabroadforfurtherstudy.据说他出国进修了。______________nopassengerswereinjuredintheaccident.据报道,没有乘客在这次事故中受伤。【注意】此句型中，当过去分词是suggested,advised,ordered,requested,required等表示建议、要求、命令等的词语时，从句要用虚拟语气,即谓语用“(should)+动词原形”。_________________thesportsmeet____________putoff.有人建议推迟运动会。_________________allthestudents__________________theirmobilephonesintotheclassroom.要求所有学生都不能把带进教室。(4)It+不及物动词或系动词(happen,seem,appear,occur…)+that从句__________________Iforgottoturnoffthelight.我突然想到我忘了关灯。(5)It+及物动词(surprise…)+宾语+that从句__________________hefinishedtheworkintime.他及时完成了工作，真让我吃惊。it作形式主语的常用句型:It’scertainthat…肯定…Itispossiblethat...很可能……Itisobviousthat…很明显…Itisnecessarythat…有必要…Itisapitythat...可惜的是……Itisafactthat…事实是…Itismonknowledgethat……是常识Ithappenedthat...碰巧……Itseemsthat…似乎，好像…Itstruck/hitsb/occurredtosbthat…某人突然想到……Itissaidthat...据说……Itisknowntoallthat...众所周知……Itisreportedthat...据报道……Itisbelievedthat...人们相信…Itissuggestedthat...建议……Itcannotbedeniedthat…不可否认用it作形式主语来改写下面的句子1、Thatwecan’tgotoseethemovieontheweekendisapity.2、ThatTaiwanispartofChinaisknowntoall.主语从句的语序———（）判断下列句子哪个正确1.Howwashesuccessfulisstillapuzzle.()Howhewassuccessfulisstillapuzzle.()2.Whatdoesheneedismoney.()Whatheneedsismoney.()3.Whenwillheeisnotknown.（）Whenhewilleisnotknown.（）主语从句的规律：找出下列句子中的错误，并总结规律例1.Whenwillheeisnotknown.规律一、主语从句一律用_________，即_______在前，_______在后。例2.Hewillnotetothemeetingthiseveningistrue.规律二、连词____在从句中无实际意义，但_____省略。例3.Ifthemeetingwillbeputoffhasnotbeendecidedyet.规律三、_______可以引导主语从句，放在句首，但____不能。例4.Thatwhetherhewillhelpothersisafact.规律四、主语从句中的____不能重叠使用。例5.Whenhewilleareapuzzle.规律五、含主语从句的主句谓语动词多用_________________。例6.Whatheneedsisthatbook.Whatheneedsissomebooks.规律六、what引导的主语从句，可根据____决定主句动词的单复数形式。例7.Thattheearthturnsaroundthesunisknowntoall.（用it作形式主语）规律七、主语从句为了避免头重脚轻现象，用____做_______，而把主语从句放在后面。翻译（陈述语序）1．__________________________(谁将去接他)isnotdecided.2．__________________________(他能否买到飞机票)doesn’tmattermuch.3．__________________________(我们如何去那里)isaquestion.4．__________________________(你刚才告诉我的)wasreallyasurprise.5．Itisclear__________________(他是一个乞丐).连接词选择总原则：看从句中缺少什么成分，根据意思选择适当连接词语；如不缺成分且句意完整，则选用that.一找_________________二查__________________三选________________________即学即练一、用适当的连接词填空1.________heattendedthemeetingornotwasn’tquiteclear.2.________teamwillwinthematchisstillunknown.3.________estotheactivitywillreceiveapresent.4.________hefiguredoutawaytosolvetheproblemsuccessfullysurprisedusall.5.Weusuallythink________wecan’tgetseemsbetterthanwhatwehave.6._________wedoistoservethepeople.7._________theywillehasn’tbeenmadepublic.8._________surprisedmemostwas_________thelittleboydidsowellinthepetition.9.Itis_________(report)thattheriverhasbeeclearandclean.二、用合适的连接词(引导词)填空MynameisTom.Iamhappytointroducemyselftoyou.(1)______IlikemostaresportsandEnglish.IalsolikemakingfriendsandIamreadytohelpothers.Inmyopinion,(2)______youcansucceedinlifemainlydependsonwhetheryoucangetalongwellwithothers.I’msureIcanbeyourgoodfriend.Itiswellknow