福建省建瓯市第二中学高中英语 Unit 4 主语从句课件 新人教版必修3.ppt

主语从句 grammar 3 tofindyourwaycanbeaproblem whatpartdoestheunderlinedpartserveasineachsentence 2 smokingisbadforyou 1 youareastudent 4 howdoyoudo isagreeting 5 whatshesaidisnotyetknown 6 thatweshallbelateiscertain 7 itiscertainthatweshallbelate subject asentenceservingassubjectiscalledsubjectclause 主语从句 充当主语的句子叫主语从句howthebookwillselldependsonitsauthor thatheisthebeststudentintheclassisobvious howyougotmeblindisstillamystery thatshewonthegamemadeherveryhappy whathesaidisnottrue whattheyneedisadictionary 结论主语从句多位于 句首主语的位置 trytodrawaconclusion whowillgomakesnodifference whichisthebestisnotcertain whydinosaursdiedoutisstillunknown whenwewillgettogetherhasnotbeendecided howshecankeephealthyisasecret whetherhewillcomeisnotveryimportant whowillgo whichisthebest whydinosaursdiedout whenwewillgettogether howshecankeephealthy whetherhewillcome 找出主语从句 引导主语从句的关联词有三类 1 从属连词that如 thattheyweretruesisterswasclearfromthefacialresemblancebetweenthem 很明显 她们确是亲姐妹 她们的脸型很相似 note that不可省 无意义 起连接作用 从句结构完整 2 从属连词whetherwhetherhe llcomehereisn tclear 他是否会来这里还不清楚 3 连接代词who whom whose what which whoever whatever whichever 连接副词where when how why whatshedidisnotyetknown 她干了什么尚不清楚 howthishappenedisnotcleartoanyone 这事怎样发生的 谁也不清楚 whoevercomesiswelcome 不论谁来都欢迎 4 有时用it作形式主语 将主语从句后置 这样做是为了避免句子头重脚轻 常用句型如下 it be 名词 that从句it be 形容词 that从句it be 动词的过去分词 that从句it be 不及物动词 that从句 主语从句三要素 hebecameagreatscientistisknowntousall whatyoutoldmeistrue 谓语动词一般用单数 从句用陈述语序 不能省略关联词 how 主语从句的注意问题 1 一个句子作主语时 主句的谓语动词应为单数 whetherhewillcomedependsontheweather 2 what引导的句子作主语时 谓语动词的数由句子的内容决定 即由表语决定 whatiwantismoney whatweneedaregoodbookswhathesaidisreasonable whatwewilldohasn tbeendecided 3 wherehewasbornandwherehelivesnowarenotclear whereandwhenhewasbornremainsasecret 两个或两个以上的主从联合做主语 主句谓语动词应为复数 两个或两个以上的连词引导一个从句 主句谓语动词应为单数 4 whetherhewillcomeisn tclear 不能换成if itisn tclearwhether ifhewillcome 可以与if进行替换 如果主语从句放在句首 不能用if引导 但是如果用it做形式主语 而把主语从句放在句末时 也可以用if引导 1 itworriedherabit herhairwasturninggray whetherb thatc whatd when2 whatisayandthink noneofyourbusiness a isb arec hasdhave 5 what与that在引导主语从句时的区别what引导主语从句时在从句中充当句子成分 如主语 宾语 表语 而that则不然 1 whatyousaidyesterdayisright 2 thatsheisstillaliveisaconsolation 3 makesthisshopdifferentisthatitoffersmorepersonalservices awhatbwhocwhateverdwhoever 6 whateverandwhoever whatever anythingthatwhoever anyonewho不管是谁犯了法 他都应该受到惩罚 whoeverbreaksthelawshouldbepunished anyonewhobreaksthelawshouldbepunished 4 thesewildflowersaresospecialthatiwoulddo icantosavethem awhateverbthatcwhichdwhichever 7 用于itisimportant natural necessary impossiblethat 句型中 主语从句应使用虚拟语气 谓语动词用 should 动词原形 的形式 should有时有感情色彩 itbesuggested advised ordered requestedthatsb should dosth 5 doshoppingdependsontheweather a whenwillweb whenwewillc whatwillwed whatwewill 常见错误展示 下列各句均有一处错误 请改正并分析错误的原因 1 lighttravelsfasterthansoundiscommonknowledge 2 ifshe scomingornotdoesn tmattermuch that that虽无词义但引导主语从句位于句首时不能省略 whether if whether都可表示 是否 但if不能引导位于主句之前的主语从句 它可以引导位于主句之后带有形式主语it的主语从句 3 thattheprofessorsaidisofgreatimportance 4 wherewillthetreesbeplantedhasnotbeendecided what that引导主语从句时无词义 whattheprofessorsaid表示 教授所说的 将will置于trees之后 主语从句要用陈述句语序 5 nomatterwhobreakstherulewillbepunished 6 whenandwherethemeetingwillbeheldstillremainaquestion 引导让步状语从句时二者可互换 但引导名词性从句时只能用whoever whoever 主语从句表示单一概念时 谓语要用单数形式 remain 7 whatwereyourproblemsayearagohasnowbecomemine 8 itwasrequestedthateveryonemadeaspeechatthemeeting has要改为have 主语从句表示复数概念时 谓语要用复数形式 have 在 itisrequested ordered suggested that从句 中 从句要用虚拟语气 即谓语用 should 动词原形 should可省略 should make 1 whereshallwespendtheholidayisn tdecided 2 yourhavemadeamistakei