Unit5WorkingtheLandDiscoverusefulstructures課件高中英語人教版選擇性

DiscoveringusefulstructuresSubjectClause主語從句定義主語從句連接詞主語從句注意事項(xiàng)鞏固練習(xí)Contents1234主語從句定義Part1主語從句定義1.找出下列句子的主語。1.Jimisgoodatplayingthepiano.2.Toseeistobelieve.3.Smokingisbadforhealth.4.Whathehassaidistrue.在主從復(fù)合句中_________________就是主語從句,它是名詞性從句的一種。充當(dāng)主語的從句2.課文原句回顧。1.However,

concernedhimmostwas

farmersoftenhadpoorharvestsandsometimesevenhadaseriousshortageoffoodtoeat.2.

thiscouldbedonewasachallengingquestionatthetime.3.However,

itwaspossibletodevelopahybridofself-pollinatingplantssuchasricewasamatterofgreatdebate.4.Today,

isestimated

about60percentofdomesticrice...5.

impressespeoplemostaboutYuanLongpingishisongoingabilitytofulfilhisdreams.whatthatHowwhetheritthatWhat主語從句連接詞Part2主語的連接詞1.從屬連詞:that,whether/ifThathewillcomeiscertain.Whetherhewillcomeisuncertain.that在主語從句中_______成分,沒有______,但不可省略。不做意思whether在主語從句中_______成分,譯為______。不做是否2.連接代詞Whatweneedismoretime.Who

willgomakesnodifference.Whomwemuststudyforisaquestionofgreatimportance.Whatheusedtobeisunclear.Whoever=Anyone(who

breaksthelaw)

willbepunished.Whatever=Anything(that

Ihave)

isyours.Whichever

prizeyouchooseinthestorewillbelongtoyou.

what,who,whom,whatever,whoever,whichever

在主語從句中起_____________,

充當(dāng)______________________。主語、賓語

或表語連接作用注意：此處whatever/whoever不能轉(zhuǎn)化為nomatterwhat/who格式2.連接代詞Whichteamwillwinthematchisstillunknown.Whosehousethatisdoesn’tconcernme.Whichever

teamgainsthemostpointswins.Whichever

ofthemgainsthemostpointswins.which,whose,whichever在主語從句中起_____________,

充當(dāng)____________。whichever有時(shí)還可以修飾名詞或后接表示范圍的of短語。定語連接作用3.連接副詞When

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

why,how,whenever,wherever在主語從句中充當(dāng)_______,

分別表示時(shí)間，地點(diǎn)，方式，原因。狀語主語從句學(xué)法指導(dǎo)依據(jù)“缺什么補(bǔ)什么”原則確定正確的連詞。所謂“缺什么補(bǔ)什么”是指從句與連詞之間的關(guān)系。如果句子中缺主語，指人用who，指物用what。如缺賓語，指人用whom，指物用what。如缺時(shí)間狀語用when；地點(diǎn)狀語用where。

原因狀語用why；方式狀語用how。如缺定語用whose或which。如什么都不缺用that，whether表“是否”。主語從句注意事項(xiàng)Part31.主語從句一般放在句首,但有時(shí)為了使句子結(jié)構(gòu)平衡,避免“頭重腳輕”,常用it作形式主語,而把從句放在后面。1.Thattheearthmovesaroundthesuniswellknown.

Itiswellknownthattheearthmovesaroundthesun.2.Thatshehasmadesuchamistakeisapity.

Itisapitythatshehasmadesuchamistake.3.Whetherhe'llcomehereisn'tclear.

Itisn'tclearwhether/ifhe'llcomehere.注意：主語從句位于句首時(shí),不能用if

引導(dǎo),主語從句后置時(shí),才可以用if引導(dǎo)。It作形式主語的常見句型:It+be+形容詞（obvious,likely,certain一定的)+

that從句(2)It+be+過去分詞(reported,expected,announced,suggested等)+that從句(3)It+be+名詞詞組(apity,ashame,anhonor,nowonder難怪等)+that從句(4)It+動詞/動詞短語(seem,appear似乎,happen恰巧,matter要緊,turnout結(jié)果是,occurtosb某人突然想到等)+that從句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從句（should）do翻譯下列句子:接虛擬語氣的主語從句:2.主語從句語序Whenwillhecomeisnotknown.Whenhewillcomeisnotknown.√×主語從句一律用陳述語序，即主語在前，謂語在后。例如：Whethertheywouldsupportuswasaproblem.Whentheywillstartisnotknownyet.1.Whetherthepatientwillbetaken

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

Whattheyneed_______masks(口罩).主句的謂語動詞，大多數(shù)使用_______(單數(shù)？復(fù)數(shù)？)由兩個(gè)連接詞引導(dǎo)同一個(gè)主從，謂動使用_______

(單數(shù)？復(fù)數(shù)？)主語為and連接的兩個(gè)主從時(shí)，謂動使用______

(單數(shù)？復(fù)數(shù)？)謂動由______決定單復(fù)數(shù)(主語？表語？)單數(shù)單數(shù)復(fù)數(shù)表語isisareis

are/is3.主語從句的主謂一致問題4.what與that在引導(dǎo)主語從句時(shí)的區(qū)別1._______yousaidyesterdayisright.2._______sheisstillaliveisexciting.3._______helostthebikeworriedhimalot.4._______helostyesterdayishisbike.WhatThatWhatThatwhat既引導(dǎo)從句，又在從句中充當(dāng)主語、賓語或表語，而that只引導(dǎo)從句，不在從句中充當(dāng)成分。鞏固練習(xí)Part41.Matchthesentenceparts.（P53）1.

remainsanunansweredquestion.2.

isanimportanttopicforustoresearch.3.

isthatthesechemicalsmayevencausecancer.4.

thesevegetablescanevenbeplantedwithoutanysoilthroughthisnewtechnology.5.

isthereasonwhysomepeopleprefertoliveinthecountryratherthaninthecity.A.WhatworriesmanypeopleB.ThatthelifestyleisslowerandhealthierC.HowwecanfindasuitablesolutiontoproducesufficientfoodD.WhenthesewheatfarmerswilljointhispilotexperimentE.ItamazedallofusthatDCAEB這些小麥農(nóng)戶什么時(shí)候會加入預(yù)試驗(yàn)仍然不得而知。如何能夠找到一個(gè)合適的解決辦法，在保證環(huán)境安全的同時(shí)，生產(chǎn)足夠的糧食，是一個(gè)需要我們研究的重要課題。令很多人擔(dān)心的是，這些化學(xué)制品甚至可能導(dǎo)致癌癥。令我們所有人驚訝的是，通過這種新技術(shù)，可以無土栽培這些蔬菜。有些人更喜歡住在鄉(xiāng)下而非城市的原因是前者生活節(jié)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練一練I.請從that、whether中選詞填空：________shegotanAinthemathtestwasapleasantsurprisetous.________Janehasgoneabroadisnonewsatall.___________shewillarriveontimeisnotknown.___________wewillgocampingdependsontheweather.___________theyagreetotheplandoesnotmatteratall.__________thecarwasoutofcontrolatthattimewasobvious.__________herhairwasturninggrayworriedheralot.__________shefailedinthedrivingtestwasashametoher.__________Peterdidnottellthetruthshockedusall.ThatThatThatThatThatThatWhetherWhetherWhether3.Filltheblankswiththerightwords.

練一練

II.請從what、which中選詞填空：_______hesaidatthemeetinginspiredeverybodypresent._______shewantstobuyisatoybear._______teamwillwinthegameisunknown._______busweshouldtakeisstillaquestion.

_______reallymattersisthatshetookthewrongtrain._______theyneededwasmoretime._______hasmadetherainforestdisappearyearbyyearisnotwellaccepted.Ireadaboutitinsomebookorother._______itwasdoesnotmatter.WhatWhatWhichWhichWhichWhatWhatWhat3.Filltheblankswiththerightwords.練一練III.請從when、where、how、why中選詞填空：1.________theplanewilltakeoffisnotknownyet.2.________themeetingwillbeheldhasnotbeendecidedyet.3.________theoldmanburiedthegoldisnotcleartous.4.________theyinsistedontravellingbybikeontheslipperyroadshockedus.5.________weunderstandthingshasalottodowithwhatwefeel.6.________themanhadnotreportedtheaccidentsoonerwasneverclear.7.________theoldladycamefromwasstillapuzzle.WhenWhenWhereWhereWhyHowWhy3.Filltheblankswiththerightwords.練一練請從whatever、whichever、whoever、whomever、whenever、wherever中選詞填空1._________comesfirstwillgettheprize.2.