高中表语从句

名词性从句（二）,表语从句,表语从句,例句：Wehavelosthisaddress.Thetroubleisit.Thetroubleisthatwehavelosthisaddress.,主语,连系动词,表语,表语从句,表语从句,表语从句：在主句中用作表语的从句。表语从句分类,由that引导(不能省略）,由关系代词、关系副词引导,由whether引导（是否）,表语从句:由引导的表语从句,1.Thebabyrefusedtoeatanyfood.Thetroubleisit.Thetroubleisthatthebabyrefusedtoeatanyfood.2.Wearetoobusy.Thereasonisit.Thereasonisthatwearetoobusy.3.Nooneintheclassspeakstohim.Theproblemisit.Theproblemisthatnooneintheclassspeakstohim.4.Thepoorwomancantaffordthefood.Thetroubleisit.Thetroubleisthatthepoorwomancantaffordthefood.,that,表语从句:由引导的表语从句,5.Weshouldgotobedearlyandgetupearly.Myadviceisit.Myadviceisthatweshouldgotobedearlyandgetupearly.6.Iwillbecomealawyer.Mydreamisit.MydreamisthatIwillbecomealawyer.7.Iremembertwentynewwordseveryday.Myplanisit.MyplanisthatIremembertwentynewwordseveryday.,that,关系代词、关系副词引导表语从句,关系代词：whowhomwhosewhichwhatwhoeverwhateverwhichever等关系副词：whenwherewhyhow等例句Howshouldtheydoit?Theproblemisit.Theproblemishowtheyshoulddoit.,引导表语从句,把两句话合并成一句话1.Whoisreadytocleanthewindowsinsuchacoldday.Theproblemisit.Theproblemiswhoisreadytocleanthewindowsinsuchacoldday.2.Wheredoesthemanagerlive?Theproblemisit.Theproblemiswherethemanagerlives.3.Howmanystudentswanttoeatout?Thetroubleisit.Thetroubleishowmanystudentswanttoeatout.,关系代词、关系副词,引导表语从句,4.Whatwillmymotherbuyasherdaughtersbirthdaypresent?Heranxiety（焦虑）isit.Heranxietyiswhatmymotherbuyasherdaughtersbirthdaypresent.5.Whyishealwayslateforschool?Myquestionisit.Myquestioniswhyheisalwayslateforschool.6.Whenwilltheyleave?Theproblemisit.Theproblemiswhentheywillleave.,关系代词、关系副词,关系代词、关系副词引导表语从句,7.Howlongdoesittakehimtoarriveattheairport?Theproblemisit.Theproblemishowlongittakeshimtoarriveattheairport.8.Howcanhegettothepostoffice?Thetroubleisit.Thetroubleishowhecangettothepostoffice.9.Wheredidhissonlosethekeys?Theproblemisit.Theproblemiswherehissonlostthekeys.,由引导定语从句,whether,Thequestionisit.Couldhepassthefinalexam?,Thequestioniswhetherhecouldpassthefinalexam.,注意（一）：连系动词be,appear,look,seem等之后可以跟表语从句。e.g.Itwasbecausehedidntpasstheexam.Itseemsthathewaslateforthetrain.,注意（二）：seem（似乎）后的表语从句可以用不定式来简化。Itseemsthathehasmanyfriends.Heseemstohavemanyfriends.Itseemsthatheislateforschoolonceaweek.Heseemstobelateforschool.,把下列复合句中的表语从句用不定式替换表示出来,1.Itseemsthatitisgoingtorain.Itseemstobegoingtorain.2.ItseemsthatJohnlikespopularmusic.Johnseemstolikepopularmusic.3.ItseemsthatthisforeignerlikesChinesefood.ThisforeignerseemstolikeChinesefood.,注意,把下列复合句中的表语从句用不定式替换表示出来,4.Itseemsthatthisnewcomerdoesntlikespeaking.Thisnewcomerseemsnottolikespeaking.5.Itseemsthatth