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

DiscoveringusefulstructuresSubjectClause主语从句定义主语从句连接词主语从句注意事项巩固练习Contents1234主语从句定义Part1主语从句定义1.找出下列句子的主语。1.Jimisgoodatplayingthepiano.2.Toseeistobelieve.3.Smokingisbadforhealth.4.Whathehassaidistrue.在主从复合句中_________________就是主语从句,它是名词性从句的一种。充当主语的从句2.课文原句回顾。1.However,

concernedhimmostwas

farmersoftenhadpoorharvestsandsometimesevenhadaseriousshortageoffoodtoeat.2.

thiscouldbedonewasachallengingquestionatthetime.3.However,

itwaspossibletodevelopahybridofself-pollinatingplantssuchasricewasamatterofgreatdebate.4.Today,

isestimated

about60percentofdomesticrice...5.

impressespeoplemostaboutYuanLongpingishisongoingabilitytofulfilhisdreams.whatthatHowwhetheritthatWhat主语从句连接词Part2主语的连接词1.从属连词:that,whether/ifThathewillcomeiscertain.Whetherhewillcomeisuncertain.that在主语从句中_______成分,没有______,但不可省略。不做意思whether在主语从句中_______成分,译为______。不做是否2.连接代词Whatweneedismoretime.Who

willgomakesnodifference.Whomwemuststudyforisaquestionofgreatimportance.Whatheusedtobeisunclear.Whoever=Anyone(who

breaksthelaw)

willbepunished.Whatever=Anything(that

Ihave)

isyours.Whichever

prizeyouchooseinthestorewillbelongtoyou.

what,who,whom,whatever,whoever,whichever

在主语从句中起_____________,

充当______________________。主语、宾语

或表语连接作用注意：此处whatever/whoever不能转化为nomatterwhat/who格式2.连接代词Whichteamwillwinthematchisstillunknown.Whosehousethatisdoesn’tconcernme.Whichever

teamgainsthemostpointswins.Whichever

ofthemgainsthemostpointswins.which,whose,whichever在主语从句中起_____________,

充当____________。whichever有时还可以修饰名词或后接表示范围的of短语。定语连接作用3.连接副词When

wewillleavehasn'tbeendecided.Howshekeepshealthyisasecret.Whyhecriesisnotclear.Wherethemeetingwillbeheldisnotknown.Whereveryougodoesnotconcernusatall.Wheneveryouwanttocomeisokwithme.when,where,

why,how,whenever,wherever在主语从句中充当_______,

分别表示时间，地点，方式，原因。状语主语从句学法指导依据“缺什么补什么”原则确定正确的连词。所谓“缺什么补什么”是指从句与连词之间的关系。如果句子中缺主语，指人用who，指物用what。如缺宾语，指人用whom，指物用what。如缺时间状语用when；地点状语用where。

原因状语用why；方式状语用how。如缺定语用whose或which。如什么都不缺用that，whether表“是否”。主语从句注意事项Part31.主语从句一般放在句首,但有时为了使句子结构平衡,避免“头重脚轻”,常用it作形式主语,而把从句放在后面。1.Thattheearthmovesaroundthesuniswellknown.

Itiswellknownthattheearthmovesaroundthesun.2.Thatshehasmadesuchamistakeisapity.

Itisapitythatshehasmadesuchamistake.3.Whetherhe'llcomehereisn'tclear.

Itisn'tclearwhether/ifhe'llcomehere.注意：主语从句位于句首时,不能用if

引导,主语从句后置时,才可以用if引导。It作形式主语的常见句型:It+be+形容词（obvious,likely,certain一定的)+

that从句(2)It+be+过去分词(reported,expected,announced,suggested等)+that从句(3)It+be+名词词组(apity,ashame,anhonor,nowonder难怪等)+that从句(4)It+动词/动词短语(seem,appear似乎,happen恰巧,matter要紧,turnout结果是,occurtosb某人突然想到等)+that从句1.Itisafactthathecheatedintheexam.2.Itseemsthatheisnothimselftoday.3.Itisnecessarythatwe(should)

havebreakfast.4.Itwassuggested

thatwe

(should)putoffthemeeting.◆Itisnecessary/important/essential/vital/crucial/strange/natural等+that（should）do◆Itissuggested/requested/desired/ordered/demanded等+that从句（should）do翻译下列句子:接虚拟语气的主语从句:2.主语从句语序Whenwillhecomeisnotknown.Whenhewillcomeisnotknown.√×主语从句一律用陈述语序，即主语在前，谓语在后。例如：Whethertheywouldsupportuswasaproblem.Whentheywillstartisnotknownyet.1.Whetherthepatientwillbetaken

______unknown.2.Whenandwherethepatientwillbetaken_____unknown.3.Whenthetaskcanbefinishedandwhetherhecanhavearest________unknown.4.Whathewantsmost_________stayingwithhisfamily.

Whattheyneed_______masks(口罩).主句的谓语动词，大多数使用_______(单数？复数？)由两个连接词引导同一个主从，谓动使用_______

(单数？复数？)主语为and连接的两个主从时，谓动使用______

(单数？复数？)谓动由______决定单复数(主语？表语？)单数单数复数表语isisareis

are/is3.主语从句的主谓一致问题4.what与that在引导主语从句时的区别1._______yousaidyesterdayisright.2._______sheisstillaliveisexciting.3._______helostthebikeworriedhimalot.4._______helostyesterdayishisbike.WhatThatWhatThatwhat既引导从句，又在从句中充当主语、宾语或表语，而that只引导从句，不在从句中充当成分。巩固练习Part41.Matchthesentenceparts.（P53）1.

remainsanunansweredquestion.2.

isanimportanttopicforustoresearch.3.

isthatthesechemicalsmayevencausecancer.4.

thesevegetablescanevenbeplantedwithoutanysoilthroughthisnewtechnology.5.

isthereasonwhysomepeopleprefertoliveinthecountryratherthaninthecity.A.WhatworriesmanypeopleB.ThatthelifestyleisslowerandhealthierC.HowwecanfindasuitablesolutiontoproducesufficientfoodD.WhenthesewheatfarmerswilljointhispilotexperimentE.ItamazedallofusthatDCAEB这些小麦农户什么时候会加入预试验仍然不得而知。如何能够找到一个合适的解决办法，在保证环境安全的同时，生产足够的粮食，是一个需要我们研究的重要课题。令很多人担心的是，这些化学制品甚至可能导致癌症。令我们所有人惊讶的是，通过这种新技术，可以无土栽培这些蔬菜。有些人更喜欢住在乡下而非城市的原因是前者生活节奏更慢、生活方式更健康。Grandmahasbeencomplainingaboutthevegetablessoldinthesupermarketwhichhavebeengrowingusingchemicalfertilizers.

Toher,thattheylookbeautifulontheoutsideisobvious.

However,whatsheisunhappyaboutisthelowernutritionalvalueandreducedflavor.

Nowthatbothofmygrandparentshaveretiredfromtheirjobsinthecity,howtheyaregoingtospendtheirretirementisanimportantdecisionforthem.Whether

theycanliveahealthylifeisthefirstthingtheyareconsidering.

Sotheyhavemadeuptheirmindstomovetothecountrysidewheretheycanliveagreenlife.2.

ReadthepassageandunderlineallthesubjectclausesthanempiresdiscusswhetherthesentenceswiththesubjectclausescanbePARAPHRASED.Suggestedanswers:1.Thattheylookbeautifulontheoutsideisobvious.Itisobviousthattheylookbeautifulontheoutside.Readthepassageandunderlineallthesubjectclauses.Theninpairs,discusswhetherthesentenceswithsubjectclausescanbeparaphrased.2.Whatsheisunhappyaboutisthelowernutritionalvalueandreducedflavour.3.Howtheyaregoingtospendtheirretirementisanimportantdecisionforthem.Itisanimportantdecisionforthemhowtheyaregoingtospendtheirretirement.4.Whethertheycanliveahealthylifeisthefirstthingtheyareconsidering.1.________fashiondiffersfromcountrytocountrymayreflecttheculturaldifferences.2.___________comeswillbewelcometotheopen-airconcert.3.________wearesureaboutistheneedtopreventchildrenfrombeingspoiled.4.________hereferredtoinhisarticlewasunknowntothegeneralreader.5.___________wewillgocampingtomorrowdependsontheweather.6._______willtaketheplaceofouroriginalheadmasterhasn’tbeendecidedyet.7._______hegaveupthechanceofstudyingabroadisunknown.8.________wewillhavethepicnicnextweekisbeingdiscussed.9.____________________________hehidthemoneyistobefoundout.10.________willbechosenournewmonitorisstillunknown.11.Itisbynomeansclear_____thepresidentcandotoendthestrike.12.Itremainstobeseen__________thenewlyformedcommittee'spolicycanbeputintopractice.13._______youneedisagreatteacherwholetsyoumakemistakes.3.Filltheblankswiththerightwords.ThatWhoeverWhatWhere/When/How/WhyWhowhetherwhatWhatWhatWhetherWhoWhyWhere练一练I.请从that、whether中选词填空：________shegotanAinthemathtestwasapleasantsurprisetous.________Janehasgoneabroadisnonewsatall.___________shewillarriveontimeisnotknown.___________wewillgocampingdependsontheweather.___________theyagreetotheplandoesnotmatteratall.__________thecarwasoutofcontrolatthattimewasobvious.__________herhairwasturninggrayworriedheralot.__________shefailedinthedrivingtestwasashametoher.__________Peterdidnottellthetruthshockedusall.ThatThatThatThatThatThatWhetherWhetherWhether3.Filltheblankswiththerightwords.

练一练

II.请从what、which中选词填空：_______hesaidatthemeetinginspiredeverybodypresent._______shewantstobuyisatoybear._______teamwillwinthegameisunknown._______busweshouldtakeisstillaquestion.

_______reallymattersisthatshetookthewrongtrain._______theyneededwasmoretime._______hasmadetherainforestdisappearyearbyyearisnotwellaccepted.Ireadaboutitinsomebookorother._______itwasdoesnotmatter.WhatWhatWhichWhichWhichWhatWhatWhat3.Filltheblankswiththerightwords.练一练III.请从when、where、how、why中选词填空：1.________theplanewilltakeoffisnotknownyet.2.________themeetingwillbeheldhasnotbeendecidedyet.3.________theoldmanburiedthegoldisnotcleartous.4.________theyinsistedontravellingbybikeontheslipperyroadshockedus.5.________weunderstandthingshasalottodowithwhatwefeel.6.________themanhadnotreportedtheaccidentsoonerwasneverclear.7.________theoldladycamefromwasstillapuzzle.WhenWhenWhereWhereWhyHowWhy3.Filltheblankswiththerightwords.练一练请从whatever、whichever、whoever、whomever、whenever、wherever中选词填空1._________comesfirstwillgettheprize.2.