高中主語從句講解及其練習(xí)

主語從句習(xí)題主語從句一、主語從句的連詞分三類（1）隸屬連詞引導(dǎo)的主語從句（thatwhetherif）that引導(dǎo)的主語從句:引導(dǎo)詞that無含義/在句中不做成分/不能夠夠省。That引導(dǎo)主語從句平時用it作形式主語。比方：Thatyouwillwinthemedalseemsunlikely.Thatshesurvivedtheaccidentisamiracle.whether引導(dǎo)的主語從句:whether有含義(可否)/在句中不做成分/不能夠夠省。注意：引導(dǎo)主語從句，不能夠用if不能夠在開頭，只能用whether。Whetherwewillholdapartyintheopenairtomorrowdependsontheweather.Whethersheiscomingornotdoesn’tmattertoomuch.（2）用連接代詞引導(dǎo)的主語從句在由連接代詞who,whose,whom,which,what,whoever,whomever,whichever,whatever引導(dǎo)的名詞性從句中，其連接代詞在句中起名詞性作用，擔(dān)當(dāng)必然成分.比方：Whatyouneedismorepractice.Whateverwedoistoservethepeople.注：whatever/whoever的功用whatever,whoever在主語從句中不含疑問意義。它引導(dǎo)主語從句，并在從句中作主語、賓語、表語等。whatever=anythingthat;whoever=anyonewho。要注意和whatever,whoever引導(dǎo)的退步狀語從句的差異。如：Whoeverbreaksthelawshouldbepunished.（主語從句）（＝Anyonewhobreaksthelawshouldbepunished.）Whoeverbreaksthelaw,heshouldbepunished.（退步狀語從句）（＝Nomatterwhobreaksthelaw,heshouldbepunished.）3）用連接副詞when,where,why,how引導(dǎo)的名詞性從句(其連接副詞有含義,在句中作狀語。)比方:Whereweshouldleaveitisaproblem.Whentheywillcomehasn’tbeenmadepubic.1主語從句習(xí)題三、it作形式主的主從句有了考句子平衡，平時在主從句使用形式主it，而將真切的主從句移至句末。分四種情況：(1)于以that引的主從句，平時用形式主it取代主從句：<a>Itis+名+從句Itisafactthat?事是??；Itisgoodnewsthat???是好信息；Itisaquestionthat???是個；Itiscommonknowledgethat???是常似的名有：apity；awonder；agoodthing；nowonder；surprise等。Itisamysterytomehowitallhappened.Itiscommonknowledgethatthewhaleisnotafish.ItisnosurprisethatBobshouldhavewonthegame.<b>Itis+形容+從句Itisnecessarythat?有必要??；Itisclearthat?很清楚??；Itislikelythat?很可能??；Itisimportantthat?重要的是??似的形容有：strange;natural;obvious;true;good;wonderful;possible;unlikely;quite;unusual;certain;evident;worth-while;surprising;interesting;astonishing,etc.Itisdoubtfulwhethershewillbeabletocome.Itisessentialthatheshouldbeherebytheweekend.Itseemsobviousthatwecannotgoonlikethis.Itisnecessarythatyou（should）masterthecomputer.需要注意的是主從句中，很多“（should）＋原形”，即要用虛氣。<c>Itis+去分+從句Itissaidthat?據(jù)??；Itisreportedthat?據(jù)道??；Ithasbeenprovedthat?已明??；Itmustbeprovedthat?必指出??似的去分有：known;estimated;expected;believed;thought;hoped;noted;discussed;required;decided;suggested;demanded;madeclear;foundout,etc.比方：Itisusedtobethoughtthatanewstarmustbeduetoacollisionbetweentwostars.Ithasnotbeenmadeclearwhenthenewroadistobeopenedtotraffic.<d>Itseems不及物（happened/appears/doesn’tmatter/makesnodifference/occurred?）that?主從句不能提前2主語從句習(xí)題Itmakesnodifferencewhetherhewillattendthemeetingornot.ItdoesnotmatterifImissedmytrain.IthappenedthatIsawhimyesterday.對于以連接代詞(副詞)引導(dǎo)的主語從句，能夠使用形式主語代主語從句，也可直接在句首使用主語從句：Whethertheywouldsupportuswasaproblem.他們可否會支持我們還是一個問題。Itwasaproblemwhethertheywouldsupportus.他們可否會支持我們還是一個問題。對關(guān)系代詞型what引導(dǎo)的主語從句，平時直接將主語從句放在句首。如：Whatweneedismoney.我們需要的是錢。WhatIwanttoknowisthis.我想知道的就是這一點。有時也可將助用形式主語。如：Itisclearenoughwhathemeant.他是什么意思很清楚。(4)若是句子是疑問句，則必定用帶形式主語it的結(jié)構(gòu)：Isittruethatheisthegirl’sfather?他是那女孩的父親，是真的嗎？Howisitthatyouarelateagain?你怎么又遲到了？四、連詞that的省略問題引導(dǎo)主語從句的連詞that有時可省，有時不能夠省，其原則是：若that引導(dǎo)的主語從句直接位于句首，則that不能夠省略；若that引導(dǎo)的主語從句位于句末，而在句首使用了形式主語it，則that能夠省略：Thatyoudidn’tgotothetalkwasapity.很遺憾你沒去聽報告。(that不能省)Itwasapity(that)youdidn’tgotothetalk.很遺憾你沒去聽報告。(that可省)五、六、七、八、九、十、十一、十二、主語從句練習(xí)題3主語從句習(xí)題1、Itneveroccurredtome___youcouldsucceedinpersuadinghimtochangehismind.(西高考)A．whichB．whatC．thatD．if2、It'sobvioustothestudents________theyshouldgetwellpreparedfortheirfuture.(天津卷)A．a(chǎn)sB．thatC．whichD．whether3、________somepeopleregardasadrawbackisseenasaplugbymanyothers.(2010·北京)A．WhetherB．WhatC．ThatD．How4、Itisuncertain________sideeffectthemedicinewillbringabout，althoughabouttwothousandpatientshavetakenit.(2010·浙江)A．thatB．howC．whatD．whether主從句1.________makesmistakesmustcorrectthem.A.WhatB.ThatC.WhoeverD.WhateverItworriedherabit____herhairwasturninggrey.A.whileB.thatC.ifD.for3.Whenandwhyhecamehere________yet.A.isnotknownB.arenotknownC.hasnotknownD.havenotknown4.________isnoreasonfordismissingher.A.BecauseshewasafewminuteslateB.OwingtoafewminuteslateC.ThefactthatshewasafewminuteslateD.Beingafewminuteslate5.________Tomlikedtoeatwasdifferentfrom________.A.That?thatyouhadexpectedB.What?thatyouhadexpectedC.That?whatyouhadexpectedD.What?whatyouhadexpected6.________wegoswimmingeveryday________usalotofgood.A.If...doB.That...doC.If...doesD.That...does7.It________Bobdrivesbadly.A.thinksthatB.isthoughtwhatC.thoughtthatD.isthoughtthat8.It'suncertain________theexperimentisworthdoing.A.ifB.thatC.whetherD.How4主語從句習(xí)題9.________theboydidn'ttakemedicinemadehismotherangry.A.ThatB.WhatC.HowD.Which10.____wecan'tgetseemsbetterthan____wehave.A.What,whatB.What,thatC.That,thatD.That,what11.____youdon'tlikehimisnoneofmybusiness.A.WhatB.WhoC.ThatD.Whether12..____we'llgocampingtomorrowdependsontheweather.A.IfB.WhetherC.ThatD.Where13._________isgoingtodothejobwillbedecidedbythePartycommittee.A.ThatB.WhyC.HowD.Who14._______we'llfinishtranslatingthebookdependsonthetime.A.WhenB.WhyC.WhatD.That15.______hewon'tgothereiscleartoallofus.A.HowB.WhatC.WhyD.This16.______thehousewillbebuiltwillbediscussedattomorrow'smeeting.A.IfB.WhereC.ThatD.What17.._______youcomeornotisuptoyou.A.