Unit5WorkingtheLandDiscoverusefulstructures课件高中英语人教版选择性

Unit5WorkingtheLandDiscoverUsefulStructuresSubjectClause句子类型简单句并列句复合句主句形容词性从句(定语从句)名词性从句副词性从句(状语从句)主语从句宾语从句表语从句同位语从句从句Lead-in5.Tofindyourwaycanbeaproblem.

4.Smokingisbadforyou.1.Janeworkshard.2.Youareastudent.

3.Theoldshouldberespected.What’sthesubject?（什么是主语？）6.Whatshesaidisnotyetknown.结论：☞主语是句子说明的人或事物，一般放在______。☞一个句子来充当_______叫主语从句。句首主语主语从句作主语名词作主语代词作主语形容词作主语动名词作主语动词不定式时作主语1.However,

concernedhimmostwas

farmersoftenhadpoorharvestsandsometimesevenhadaseriousshortageoffoodtoeat.2.

thiscouldbedonewasachallengingquestionatthe

time.3.However,

itwaspossibletodevelopahybridofself-

pollinatingplantssuchasricewasamatterofgreatdebate.4.Today,

isestimated

about60percentof

domesticrice...5.

impressespeoplemostaboutYuanLongpingishisongoingabilitytofulfilhisdreams.课文原句回顾whatthatHowwhetheritthatWhat1.Themanislookingatyou.2.Youareastudent.3.Tofindyourwayisaproblem.4.Smokingisbadforyou.5.Whatyouneedisabook.6.ThatTomwillcomehereexcitesme.7.Whentheywillturnupisuncertain.8.Itisapitythatyoudidn’tseehim.在句中充当主语的从句叫做主语从句Findoutthesubjectinthesentences.在主从复合句中，充当主语的从句是主语从句。它是名词性从句的一种。引导主语从句的连接词有从属连词、连接代词和连接副词。什么是主语从句？Presentation引导主语从句的从属连词有：that、whether、if引导主语从句的连接连词有：who、whoever、whom、whose、what、whatever、which、whichever引导主语从句的连接副词有：when、where、how、why引导主语从句的连接词“缺什么补什么”原则缺主语，指人用____，指物用_____；缺宾语，指人用_________

，指物用_____；缺时间状语用______；缺地点状语用______；缺原因状语用_____；缺方式状语用_____；缺定语用__________。什么都不缺用_______，缺“是否”_______；whowhatwho/whomwhatwhenwherewhyhowwhich/whosethatwhether1.That

Yuandevotedallhislifetodevelopinghybridrice

movedallpeoplearoundtheworld.2.Whetheritwaspossibletodevelopahybridplantwasamatterofgreatdebate.that_____成分，___意义，____省略。whether____成分，__意义，译为_____。

从属连词引导主语从句只起引导作用，在主语从句中不充当任何成分。不做是否无不能不做有1.从属连词：that；whether；ifwhether与if引导主语从句：如果主语从句位于句首，不能用if引导，此时，只能用whether。但如果用it作形式主语，而把主语从句放在句末时，也可以用if引导。用whether或if填空1.

Itdoesn’tmatter___________hewillcomeornot.2.________we’llgocampingtomorrowdependsontheweather.3.Itwasdoubtful___________TomreallysawSharon.4.________TomreallysawSharonwasdoubtful.whether/ifWhetherwhether/ifWhetherWhowillgomakesnodifference.Whatweneedismoretime.WhichbookIshallchoosehasn'tbeendecided.Whoeverbreaksthelawwillbepunished.who在主语从句中充当_____,译为___。what在主语从句中充当_____,译为____。which在主语从句中充当_______,译为_______。whoever在主语从句中充当_______,译为_______。宾语什么主语谁主语无论谁定语哪一个2.连接代词:who、whoever、whom、whose、what、whatever、which、whicheverWhenwewillleavehasn'tbeendecided.Wherethemeetingwillbeheldisnotknown.Whyhecriesisnotclear.Howshekeepshealthyisasecret.when在主语从句中充当__________,译为_________。where在主语从句中充当__________,译为_________。why在主语从句中充当__________,译为_________。how在主语从句中充当__________,译为_________。时间状语什么时候地点状语哪里原因状语为什么方式状语怎样3.连接副词：when、where、how、why从属连词(不作成分）that无词义、不翻译、不可省略whether/if意为“是否”。如果有形式主语it，whether可换成if。如果whether在句首或后面直接跟ornot时，不能换成if。连接代词（作成分）what,who,whom,which,wh-+ever,whose等在从句中充当主语、宾语、表语、定语等成分。连接副词（作状语）when,where,how,why在从句中作时间、地点、方式、原因状语等成分。引导主语从句的连接词1.Whenwillhecomeisnotknown.✳主语从句一律用陈述语序，即主语在前，谓语在后。正：Whenhewillcomeisnotknown.2.Wherewillhegoisnotyetfixed.正：Wherehewillgoisnotyetfixed.找出下列句子中的错误，并总结规律1.Whetherthepatientwillbetaken

______unknown.2.Whenandwherethepatientwillbetaken_____unknown.3.Whenthetaskcanbefinishedandwhetherhecanhavearest_____unknown.4.Whathewantsmost____stayingwithhisfamily.

Whattheyneed_______masks(口罩).is单个从句做主语，谓语大多数使用_______(单数？复数？)单数由两个连接词引导同一个主从，谓动使用____(单数？复数？)单数主语为and连接的两个主从时，谓动使用____(单数？复数？)复数what在主从中做宾语时，谓语的单复数取决它后面的表语。areisareis探寻规律1：主语从句主谓一致问题Thatallcountriesworktogetherisimportant.

用一个

It

来解决问题！Itisimportantthatallcountriesworktogether.

★主语从句为了避免头重脚轻现象,用it做_________，而把从句放在后面充当____________。真正的主语形式主语探寻规律2：主语从句太长怎么办？(1)It+be+形容词（obvious,true,surprising,wonderful,possible,likely,certain)+that从句(2)It+be+动词的过去分词(said,reported,thought,expected,decided,announced,suggested等)+that从句(3)It+be+名词词组(apity,ashame,goodnews,anhonor,nowonder等)+that从句(4)It+动词/动词短语(seem,appear,happen,matter,turnout,occurto等)+that从句It作形式主语的常见句型Summary定义主语从句引导词形式主语主谓一致

作用，位置

从属连词，连接代词，连接副词

单个主语从句-单数多个主语从句-复数

It＋be＋形容词/名词短语/过去分词/不及物动词＋that从句语序

陈述语序1.________hewillsucceediscertain.2.________hewillgothereisstillamystery.3.________hesaidisnottrue.4.________willhappentotheworldisdifficulttopredict.5.__________wewillgocampingtomorrowdependsontheweather.6._______willtaketheplaceofouroriginalheadmasterhasn’tbeendecidedyet.7._______hegaveupthechanceofstudyingabroadisunknown.ThatWhetherWhatWhatWhetherWhoWhy1.Filltheblankswiththerightwords.Practice8.________wewillhavethepicnicnextweekisbeingdiscussed.9.____________________________hehidthemoneyistobefoundout.10.________willbechosenournewmonitorisstillunknown.11.Itisbynomeansclear_____thepresidentcandotoendthestrike.12.Itremainstobeseen__________thenewlyformedcommittee'spolicycanbeputintopractice.13._______youneedisagreatteacherwholetsyoumakemistakes.Where/When/How/WhyWhowhetherwhatWhatWhen/Where1.你做的任何事都是正确的。____________________________________________________2.手表属于谁是未知的。____________________________________________________3.我们需要的是时间。____________________________________________________4.大家相信善行会带给我们好运。____________________________________________________Whateveryoudidwasright.Whomthewatchbelongstoisunknown.Whatweneedistime.Itisbelievedthatgooddeedswillbringusfortune.2.Translatethesentences.1.

remainsanunansweredquestion.2.

isanimportanttopicforustoresearch.3.

isthatthesechemicalsmayevencausecancer.4.

thesevegetablescanevenbeplantedwithoutanysoilthroughthisnewtechnology.5.

isthereasonwhysomepeopleprefertoliveinthecountryratherthaninthecity.A.WhatworriesmanypeopleB.ThatthelifestyleisslowerandhealthierC.HowwecanfindasuitablesolutiontoproducesufficientfoodD.WhenthesewheatfarmerswilljointhispilotexperimentE.ItamazedallofusthatDCAEB3.Matchthesentenceparts.（P532）Grandmahasbeencomplainingaboutthevegetablessoldinthesupermarket,whichhavebeengrownusingchemicalfertilisers.Toher,thattheylookbeautifulontheoutsideisobvious.However,whatsheisunhappyaboutisthelowernutritionalvalueandreducedflavour.Nowthatbothofmygrandparentshaveretiredfromtheirjobsinthecity,howtheyaregoingtospendtheirretirementisanimportantdecisionforthem.Whethertheycanliveahealthylifeisthefirstthingtheyareconsidering.Sotheyhavemadeuptheirmindstomovetothecountryside,wheretheycanliveagreenlife.4.Readthepassageandunderlineallthesubjectclauses.Theninpairs,discusswhetherthesentenceswithsubjectclausescanbeparaphrased.1.WhathaveIforgottenisthatIhaveatesttoday.2.Wholeftmetheseflowersarenotcleartome.3.Thisisobviousthatstudentsshouldpreparewellfortheirfuture.

4.Who’sticketthisishasnotbeenconfirmed.5.Whenthetestwillbegivenhavenotbeendecided.5.Circleandcorrectthemistakeineachsentence.(P903)WhatIhaveforgottenisItWhosehasnot1.hesaid/reasonable2.shewillaccepttheinvitation/notclearyet3.theanimalsaremovingto/notexactlyknown4.youhaverecoveredfromyourillness/agreatrelieftous5.hehasbecomedistantrecently/myconcernWheretheanimalsaremovingtoisnotexactlyknown.Thatyouhaverecoveredfromyourillnesswillbeagreatrelieftous.Thathehasbecomedistantrecentlyismyconcern.Whathesaidseemsreasonable.Whethershewillaccepttheinvitationisnotclearyet.6.Makesentencesusingsubjectclauseswiththehelpoftheclues.(P902)EXAMPLEhethought/completelywrongWhathethoughtwascompletelywrong.7.Rewritethesentencesusingsubjectclauses.(P901)EXAMPLEI’dlikeyoutofindouthownewtechnologiescanincreasegrapeproduction