《主语从句公开课》PPT课件.ppt

Astronomy:thescienceofthestars-grammar,Unit4,Subject,Task1:找出下列句子的主语。1.Atreehasfallenacrosstheroad.2.Youareastudent.3.Tofindyourwaycanbeaproblem.4.Whatshesaidisnotyetknown.5.Thatweshallbelateiscertain.,在复合句中充当主语的从句，叫做主语从句。,SubjectClause主语从句,Task2:找出下列句子的主语。1.Thathewillcomeiscertain.2.Whetherhewouldsupportuswasunknown.3.Whathesaysisnotimportant.4.Whowilltakepartinthemeetinghasnotbeendecided.5.Whichsidewillwinisnotclear.,SubjectClause主语从句,一般来说主语从句都是放在。,句首,6.Whosewatchwaslostisunknown.7.Whyhediditremainsamystery.8.Whentheywillstartisnotknownyet.9.Howhebecameagreatscientistisknowntousall.10.Whereshehasgoneisnotknownyet.,思考：主语从句有哪些连接词？这些连接词是否充当成分？有无意义？,从属连词：连接代词：连接副词：,that、whether,what、who、which、whose,when、where、why、how,whatever、whoever、whichever,从属连词：that引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不可省略。,whether引导主语从句，本身有实际意义，是否的意思，在主语从句中不充当任何成分,连接词：how,wh-引导主语从句，本身有实际意义，在主语从句中充当句子成分。,主语从句中缺状语用连接副词:when、where、why、how,主语从句中缺主语，宾语，表语，定语用连接代词：what、who、which、whose等,Task3:用合适的连接词填空。1._teamwillwinthematchisstillunknown.2._weneedismoretime.3._theearthisasolidballisknowntousall.4._themeetingwillbeheldnextweekhasntbeendecidedyet.5._theplanwillbecarriedoutisunknown.,Which,What,That,Whether,Where,/,Whether,/,When,6._wecanarriveattheairportbefore8oclockisstillaquestion.,思考：怎样确定连接词？,Step1:找主语从句Step2:分析主语从句缺不缺成分Step3:翻译整个句子，结合意思,Whether,/,How,Task4根据下列句子中的错误，总结注意事项。1.Whenwillhecomeisnotknown.hewill总结:2.HewillnotcometothemeetingthiseveningThatheistrue.总结:,主语从句要用陈述语序。,that引导主语从句位于句首不可省略。,3.Ifthemeetingwillbeputoffhasnotbeendecidedyet.Whether总结:4.Whenhewillcomeareapuzzle.isWhenwellholdthemeetingandwherewellholdithasnotbeendecided.have总结:,if和whether均可表示“是否”，但在引导位于句首的主语从句时，只能选用whether不能用if。,单个从句做主语，谓语动词用单数；两个或两个以上从句做主语，谓语用复数。,注意1：Whatheneedsisthatbook.(be)Whatheneedsaresomebooks.(be)总结：,What引导主语从句时，谓语动词be与做表语的名词单复数一致。,注意2.Thatweshouldworkhardatschoolisimportant.Itsimportantthatweshouldworkhardatschool.总结：,在主从复合句中，如果主语从句太长，为了避免句子结构头重脚轻,经常用_作形式主语,而把主语从句放在主句的谓语动词之后。,it,Ex:改写下列句子。1).Thathedidntcomeisapity.2).Whentheplaneistotakeoffhasntbeenannounced.3).Thatwearelateisobvious.,Itisapitythathedidntcome.,Ithasntbeenannouncedwhentheplaneistotakeoff.,Itisobviousthatwearelate.,Ex1:单句改错。1.Thatiscertainthatwecanwin.2.Youhavemadeamistakeisafact.3.Whereshallwespendtheholidayisntdecided.,It,weshall,That,4.Whetherwewillgoforanoutingtomorrowremainunknown.5.Howcausedtheaccidentisstillamystery.,remains,What,Ex2.完成句子。1._(谁会赢得比赛)isunknown.2._(我们得不到的)seemsbetterthanwhatwehave.3._(我在哪里过暑假)isnoneofyourbusiness.4.Itisapity_(你错过了班车).,Whowillwinthegame,Whatwecantget,WhereIspendmysummerholiday,thatyoumissedthebus,5.Itisreported_(很多人把英语作为第一或第二语言)。6._(更重要的是)isthatwemustformagoodhabitoflearningEnglish.7.很显然她在说谎。_8熟能生巧是有道理的。_,thatmanypeopleconsiderEnglishasthefirstorsecondlanguage.,Whatismoreimportant,Itisobviousthatsheistellinglies.,Thatpracticemakesperfectisright.,DiscussionSinceyouenteredhighschool,youmusthavemetwithsomeproblemsinyourstudyorlife.Onecantalkabouttheproblems.Theotherscangivesomeadvice.Trytousethefollowingstructures:,Thedifficultyis.whatIfinddifficultis.Thetroubleis.whatworriesmeis.Myadviceis.whatIwouldadviseis.Ithinkthat.whatIthinkis.Iwanttotellyouthat.wh