资源描述
SubjectClauses主语从句主语从句1.主语从句：从句在句中充当主语成分主语从句：从句在句中充当主语成分1).Thathewillsucceediscertain.2)Whetherhewillgothereisnotknown.3)Howwecanhelpthetwinswillbediscussedatthemeeting.1引导主语从句的连接词有三类：引导主语从句的连接词有三类：(1)连词连词that、whether：Whetherwegobytrainorbyboatmakesnodifference.Whetherhellcomehereisntclear.Thatpricewillgoupiscertain.Whatshedidisnotyetknown.Whowillwritethepoemhasnotbeendecidedyet.Whateverhedidisright.(2)连接代词连接代词who,whom,whose,what,which,whoever,whatever,whichever等等3)连接副词连接副词where,when,how,why等。等。Howthishappenedisnotcleartoanyone.Whenhewillbebackdependsontheweather.Howthepyramidswerebuiltisstillamystery.主语从句后置主语从句后置!为了避免主语冗长免主语冗长,句子头重脚轻句子头重脚轻,经常用经常用it作作形式主语形式主语,主语从句放在后面作真正的主语主语从句放在后面作真正的主语.例:Thatweshallbelateiscertain.-Itscertainthatweshallbelate.1.Thattheearthisroundisknowntoall.-2.Thatyoumissedthechanceisapity.-Itisapitythatyoumissedthechance.Itsknowntoallthattheearthisround.A.It+be+形容词形容词(obvious,true,natural,surprising,good,wonderful,funny,possible,likely,certain,probable,etc.)+that从句。如：Itiscertainthatshewilldowellinherexam.B.It+be+名词词组名词词组(nowonder,anhonour,agoodthing,apity,nosurprise,etc.)+that从句。如：Itsapitythatwecantgo.2.2.2.2.用用用用it it it it 作形式主语的结构作形式主语的结构作形式主语的结构作形式主语的结构C.It+be+过去分词过去分词(said,reported,thought,expected,decided,announced,arranged,etc.)+that从句。如：ItissaidthatMr.GreenhasarrivedinBeijing.D.It+seem,happen等不及物动词及短语等不及物动词及短语+that从句。如：从句。如：IthappenedthatIwasoutthatday.E.It+doesntmatter(makesnodifference,etc.)+连接代词连接代词或连接副词引起的主语从句。如：或连接副词引起的主语从句。如：Itdoesntmatterwhethershewillcomeornot.注注 意：意：1.Whatyouleftareonlyseveraloldbooks.2.Whatyousaidisofgreatimportance.3.Whetherhellcomehereisnotclear.1.“if”不能引导主语从句，应有不能引导主语从句，应有“whether”引导。引导。3.主语从句的主语从句的“that”一般不能省。一般不能省。4.“what”引导主语从句时，谓语动词：引导主语从句时，谓语动词：1）常与其后的名词作表语一致）常与其后的名词作表语一致2）根据句子的语）根据句子的语境而定。境而定。4.主语从句需注意的问题主语从句需注意的问题2.主语从句中用陈述语序主语从句中用陈述语序1.Whereshallwespendtheholidayisntdecided.2.Youhavemadeamistakeisafact.3.Thatiscertainthatwecanwin.4.Nomatterwholeavestheroomlastoughttoturnoffthelights.5.Ifthepolicemenwillcomeisnotcertain.weshallThatyouhaveItisWhoeverwhether改错练习改错练习1.Ireadaboutitinsomebookorother,doesitmatter_itwas?（01北京春季北京春季)Awhere BwhatChowDwhich2.AfterYangLiweisucceededincirclingtheearth,_ourastronautsdesiretodoiswalkinspace.（04上海）上海）A.whereB.whatC.thatD.how3.Fashiondiffersfromcountrytocountrymayreflecttheculturaldifferencesfromoneaspect.(00上海）上海）A.WhatB.ThatC.ThisD.Which（D）(B)(B）1._ he made an important speech at the meeting was true.A.That B.Why C.What D.How 2._well go camping tomorrow depends on the weather.A If B Whether C That D Where 3._ is known to us all is that America is a developed country_the First World.a.Which;belong to b.As,belonged to b.c.What;belonging to d.It;belonging to4.Itsknowntousall_aformofenergy.A.waterisB.thatwaterisC.iswaterD.thatwaterto5.Itworriedherabit_herhairwasturninggray.A.whetherB.thatC.whatD.when6.WhatIsayandthink_noneofyourbusiness.A.isB.areC.hasDhave
展开阅读全文