高中英语 主语从句复习课件 新人教版选修8.ppt

Grammar 主语从句 Grammar 3 Tofindyourwaycanbeaproblem 2 Smokingisbadforyou 1 Youareastudent 4 Howdoyoudo isagreeting 5 Whatshesaidisnotyetknown 6 Thatweshallbelateiscertain 7 Itiscertainthatweshallbelate Subject 主语 AsentenceservingassubjectiscalledSubjectClause 主语从句 NounClausesastheSubject 定义 用作主语的从句叫主语从句 它是名词性从句之一 引导主语从句的连接词有 连词that whether 连接代词who what和which 连接副词when where how和why Whowillgoisimportantforme Whichisthebestisnotclear Whydinosaursdiedoutisunknown Wherewewillgettogetherhasnotbeendecided Howshecankeephealthyisasecret Whetherhewillcomeisnotveryimportant 一主语从句的连接词 1 that只起引导作用 本身无实际意义 不充当任何成分 但不能省略 Thatshelefthimmadehimheart broken Thatheisstillaliveisagoodnewstous 2 置于句首只能用whether 是否 不充当从句的任何成分 他是否会参加这个话剧表演是显而易见的 isclear 他能否买到飞机票 doesn tmattermuch Whetherhecanbuytheplanetickets Whetherhe lltakepartintheplay 1 Ifshewillcomeisnotimportant Whethershewillcomeisnotimportant 2 Ifshewillhaveenoughtimeisaquestion Whethershewillhaveenoughtimeisaquestion3 Ifhewillhandinhishomeworkisaquestions Whetherhewillhandinhishomeworkisaquestions 结论1 在主语从句中只能用whether 不能用if 3wh 疑问词包含意思 并在从句中充当成分 shewillbebackisstillaquestion youtoldmejustnowwasreallyasurprise wewillholdthebasketballgametomorrowisnotimportant classwillwinthefootballgameisnotclear willmeethimisnotdecided When What Where Which Who breaksthelawshouldbepunished hashelpedtosavethedrowninggirlisworthpraising tellsliesiswrong Whoever Whoever Whoever 填空练习 1 themeetingwillbeheldnextweekhasn tbeendecidedyet 2 theplanwillbecarriedoutisstillunknown 3 thebuildingofthecarfactorywillbestartedhasn tbeendecidedyet 4 teamwillwinthematchisstillunknown 5 weneedismoretime 6 wecanarriveattheairportbefore8o clockisstillaquestion Where When When Which What Whether 1 Wherewillthemeetingbeheldisnotdecided Wherethemeetingwillbeheldisnotdecided 2 Whenwilltheworkbefinishedisunknown Whentheworkwillbefinishedisunknown 3 Whatwillhedoaftergraduationisaquestion Whathewilldoaftergraduationisaquestion 结论2 主语从句应使用陈述句语序 doshoppingdependsontheweather A WhenwillweB WhenwewillC WhatwillweD Whatwewill 1 yousaidyesterdayisright 2 sheisstillaliveisaconsolation 安慰 3 helostthebikeworriedhimalot 4 causedtheaccidentremainsunknown 5 mademattersworsewas nightbegantofall 6 wecan tgetseemsbetterthan wehave WhatThatThat 注 what与that在引导主语从句时的区别 what在从句中充当句子成分 如主语 宾语 表语 而that则不然 What Whatthat Whatwhat 二 it做形式主语为了防止句子头重脚轻 通常把形式主语it放在主语位置 真正主语搁置于句末 1 It be 名词 形容词 主语从句 Exx 很肯定他会赢得比赛的 thathewillwinthematch Itisverylikelythattheywillholdameeting Itisimportantthatweallshouldattendthemeeting Itisstillamysterywhatcausedtheaccident Itiscertain 2 It 不及物动词 seem happen matter 主语从句 Itseemsthathehasseenthefilm 似乎 Ithappenedthattheywereabsent 碰巧 3 It 过去分词 从句 ItissaidthatPresidentObamawillvisitourschoolnextweek 据说 Itisdecidedthat 据决定Itisbelievedthat 据认为 ItisknowntoallthatLiHuaisthebeststudentinourclass 众所周知 1 Thisisnaturalthattheyshouldlikeeachother 2 Itistruehehasmadeaveryimportantdiscoveryinchemistry 3 Itdoesn tmatterthatheiswrongornot 4 ItisknowtoallthatLuXunisafamousauthor TrueorFalse It that Whateverhesaysisofnoimportance Whoeversaysthisiswrong 但谓语动词用单数还是复数 不可一概而论 而要视句子的意义而定WhatIneedismoney WhatIneedarebooks 三 在主语从句中 谓语一般用单数 Whenandwherewe llholdthemeeting notbeendecidedyet A hasB isC haveD are 1 makesthisshopdifferentisthatitoffersmorepersonalservices AWhatBWhoCWhateverDWhoever 练习 ThesewildflowersaresospecialthatIwoulddo Icantosavethem AwhateverBthatCwhichDwhichever 3 intheregulationsthatyoushouldnottellpeoplethepassportofyoure mailaccount AWhatitrequiredBWhatrequiresCItisrequiredDItrequires 1 Itisprettywellunderstood controlstheflowofcarbondioxideinandouttheatmospheretoday A thatB when