名词性从句-主语从句

请君思考：,从句的特点?名词性从句的类别？名词性从句的连词有哪几大类？其特点？能否举几个接形式宾语it的宾语从句？那些动词的宾语从句需要虚拟？表语从句的特殊关联词有哪些？Whether和If的用法有哪些区别？从句的解题步骤是什么？,Warming-upReadandfindoutthesentenceswithasubjectclauseinthereadingpassage?,1)Whatitwastobecomewasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.,2).Theearthbecamesoviolentthatitwasnotclearwhethertheshapewouldlastornot.,4).Whatscientiststhinkisthattheearthwasdifferentbecauseof,6).Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependon,3)Whatisevenmoreimportantisthatastheearthcooleddown,waterbegantoappearonitssurface.,5)Whytheysuddenlydisappearedstillremainsamystery.,共同特点：1）都有一个引导词2）引导词做句子成分？3）引导词有其汉语意思？,名词性从句的类别？关联词有那几大类？能否举几个接形式宾语it的宾语从句？那些动词的宾语从句需要虚拟？表语从句的特殊关联词有哪些？,一、名词性从句NounClause,宾语从句表语从句主语从句同位语从句,作用相当于名词,（三）、主语从句SubjectClause,做主语用的名词性从句，因其在复合句中做主语，又称主语从句，,1.从属连词that1)Thatherhairwasturninggrayworriedherabit.=Itworriedherabitthatherhairwasturninggray.2)Thatcomputershavechangedourlifeisknowntoeveryone.=Itsknowntoeveryonethatcomputershavechangedourlife.,结论：that无含义,不做成分,但不能省。,2.从属连词whetherWhethertheheadmasterwillsupportusisaproblem.,结论：whether表“是否”，不可换成if,3.连接代词what1)WhatIcantunderstandiswhyheisoftenabsentfromschool.2)Whatparentssayanddohasalife-longeffectontheirchildren.(07陕西)3)WhatmattersmostinlearningEnglishisenoughpractice.(07全国）结论：what“所的”，在从句中做主、宾、表语成分。,4.连接代词whatever1)Whateverwassaidheremustbekeptasecret.2)WhateverDavidsayssoundsrighttoHelen.3)WhateverImaydoissupportedbymyparents.,结论：whatever在从句中充主、宾语，表“无论什么”=anythingthat,5.连接代词who,1)Whowillbethenextmayorisnotourconcern.2)Whowillattendthemeetinghasnobeendecided.3)Whoistoblameremainsaquestion.,结论：who在从句中充当主语，带有疑问含义。,6.连接代词whoever,1)Whoeverworkshardisrespectedbyothers.2)Whoeverbreaksschoolruleswillbepunished.3)Whoeverdoessowillregretlater.,结论：whoever表示“无论谁.”=anyonewho,7.连接代词whichWhichclasswillbenumberoneremainstobeseen.,结论：which表“哪一个”,1)Whentheweddingwillbeheldiscleartoeveryonenow.2)Whereyouwerebornisnotimportant.3)Howyoudressreflectsyourpersonality.4)Whyshedressessobeautifullyisanopensecret.,结论：引导词分别充当从句中的时间状、地点状、方式状、原因状,8.连接副词,9.主语从句过长，常用it做形式主语,而把主语从句放在句末，常用句型有：,1）It+be+n.+主语从句Itisafact(anhonor,apity,nowonder,nosurpriseetc.)+that从句2)Itbe+adj.+主语从句Itisobvious(true/certain/strange/surprising/possible/likelyetc.)+that从句,3)Itbe+v.ed+从句Itissaid(reported/thought/known/expectedetc.)+that从句4）It+vi.+从句Itseems(looks/happened/appearsetc.)+that从句,Readandtranslate:Itisapitythatwecantgo.Itisnowonderthatourteamhavewonthegame.ItisanhonorthatIwasinvitedtoattendthemeeting.Itiscertainthatshewilldowellinherexam.ItisreportedthatChinahassentanothermanmadesatelliteintoorbit.,Ithappensthattheywereabsent.,Itdoesntmatterwhethershewillcomeornot.Itmakesnodifferencewhereweshallhavethemeeting.,主语从句六注意：关联词不能省；从句做主语，谓语动词用单数；从句用陈述语序；it做形式主语；主语从句用whether不用if;对比：whatbecauseB.What;thatC.That;whatD.That;because,4._wewillgocampingtomorrowdependsontheweather.A.IfB.WhetherC.ThatD.Where5._thattheycanpassthewrittenexamthistime.A.ThatishopedB.ItishopedC.IthopesD.Thathopes,6.Itwasdoubtful_Maryreallyheardhim.A.thatB.ifC.whetherD.what,Readingcomprehension:,PutthefollowingsentencesintoChinese:Whatitwastobecomewasamysteryuntilthedustbegantoslowlycombineintoaballmovingaroundthesun.随后它会变成什么曾经是一个谜，直到最后这团尘埃开始慢慢地合成一个环绕太阳运转的球状物。2.Theproblemwasthattheearthbecameviolentbecauseitwasnotclearwhetherthesolidshapewastolastornot.问题是地球（开始）变得激烈动荡，不知道这个固体形状是否会继续存在下去。,3.Itallowedtheearthtodissolveharmfulgases,whichhadbecomepartoftheearthsatmosphere,intotheoceansandseas.,它使得地球得以把曾经存在于大气层中的有害气体，溶解在海洋里。,4.W