一、主語從句的連詞三類（）從屬連引導的主語從句

文檔來源為從網(wǎng)絡收集整理word版可編輯歡下載支持主語從句（thatif）導的主語從句引導詞that無含義/在句中不做成分/不可以省引導主語從句通常用it作形式語。Thatsheaccidentismiracle.whether有含義是否)句中不做成分/不可以省。注意：引導主語從句不能用if不在開頭，只能用。Whetheriscomingordoesntoomuch.（）用連代詞引導的主語從句在由連接代詞who,whose,whom,which,what,whoever,whomever,whichever,whatever引的名詞性從句中，其連接代詞在句中起詞性作用，擔當一定成分.例如

weisto注：whateverwhoever的功whatever=anythingwhoever=who。要意和whoever引導的讓步狀語從句區(qū)別。如：breaksthelawbe（主語從）（＝thelawshouldbe）Whoeverbreakslaw,heshouldbepunished.（讓步狀語從句）（＝Nolaw,heshouldbepunished.）（）用連接詞when,where,why,引導的名詞性從句(其連接副詞有含義在句中作狀語。)例如weleaveitis

文檔來源為從網(wǎng)絡收集整理word版可編輯歡下載支持Whenwillcomehasnpubic.三、it作形式主語的主語從句有時為了考慮句子平，通常在主語從句處使用形式主語it，而真正的主語從句移至句末。這四種情況：對于以連詞引導的主語從句通常用形式主語it替代主語從：<a>Itis名+從句Itisfact…事實是……；Itisnewsthat………是消息；Itaquestion……是個問題Itknowledgethat………常識類似的名詞還有a；；；等。ItismysterytomeitallItiswhaleisItisnosurpriseBobhavewongame.Itis+形容詞+從句Itisnecessarythat…必要……Itclearthat…很清楚……Itlikely…很可能……；Itis…重要的是……類似的形容詞還有：natural;true;good;wonderful;possible;unlikely;unusual;certain;evident;worth-while;etc.ItisdoubtfulwillbeabletoItisshouldtheweekend.ItwelikeItisnecessarythat（）the需要注意的是這類主從句中，謂語動詞很多為should）＋動詞原即要用虛擬語氣。

文檔來源為從網(wǎng)絡收集整理word版可編輯歡下載支持Itis+過去分詞+從句Itis據(jù)……；Itisreported…據(jù)道……；Ithasprovedthat…已明……；Itmust…必指出……類似的過去分詞還有known;estimated;believed;thought;suggested;clear;out,etc.例如：ItisusedbethoughtthatstarduecollisionItnotcleartheistoopenedtraffic.Itseems不及物詞（happened/appears/doesnt/nodifferenceoccurred）that…主語從句不提前Itnodifferencewhetherhewillattendmeetingornot.ItdoesifImissedmyItthatIyesterday.(2)對于連接代詞(副)的主語從句，可以使用形式主語代主語從句，也可直接在句首用主語從句：Whethertheywouldsupportus他們是否會支持我們還是一個問題。Itproblemtheysupport他們是否會支持我們還是一個問題。(3)對關(guān)代詞型what導的主語從句常直接將主從句放在句首：weneedmoney.我們要的是錢。Iwantthis.我想知道的就這一點。有時也可將助用形式語。如：Itiswhathe他什么意

文檔來源為從網(wǎng)絡收集整理word版可編輯歡下載支持思很清楚。(4)如果子是疑問句，則必須用帶形式主語it的結(jié)構(gòu)：ittruethatisthegirls是那女孩的父親，是真的嗎？Howityou你怎么又遲到了？四、連詞that省略問題引導主語從句的連詞有可省，有時不能省，其原則是：若引導的主語從句直接位于首則不省略若that導的主語從句位于句末，而在句首使用了式主語it則以省略：Thatyou’ttalkapity.很憾你沒去聽報告。(that不可省)Itpity(that)didnttotalk.很遺憾你去聽報告省高考題：1、Itnevercouldsucceedinhimchange陜西高考)A．whichB．what．thatD．if2、It'sobviousstudents________theygetwellfortheirfuture.(天津卷)A．B．thatC．whichD3、adrawbackisseenmany北京)A．WhetherB．C．ThatDHow4、Itisthemedicinewill，thousandhaveit.(2010·浙)A．thatB．howC．D．whether主語從句練習題

文檔來源為從網(wǎng)絡收集整理word版可編輯歡下載支持1.________makesmistakesA.B.D.WhateverItworriedherabitherwasturningA.whileifD.forandhecame________yet.A.isnotknownB.knownhasknownD.known________isnoreasonfordismissingher.A.shewasfewminuteslateB.toaTheshefewminuteslateD.Beingfewminuteslate________TomdifferentA.That…thatyouhadyouhadC.That…whatyouhadexpectedD.What…whatyou6.________swimmingeverydayuslotA.If...doB.That...doIf...doesD.________Bobdrivesbadly.A.thinksthatB.thoughtwhatthoughtD.thought________A.ifB.C.whetherD.how9.________thedidn'ttakemotherA.ThatB.WhatC.D.seemsbetterA.B.C.That,whatyoudon'tlikehimisA.B.WhoC.ThatD.Whether

文檔來源為從網(wǎng)絡收集整理word版可編輯歡下載支持12..____we'llgotomorrowdependsontheweather.A.IfB.WhetherC.ThatD.todothewilldecidedbytheA.ThatB.WhyHowtranslatingbookdependstime.A.WhyC.WhatD.That15.______hewon'tgoiscleartoallA.HowB.WhatC.D.housewillbuiltwilldiscussedmeeting.A.IfB.ThatD.What._______youcomeoruptoyou.A.B.IfC.WhyWhethe