名词性从句--主语从句.ppt

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1、名词性从句（一）主语从句主语从句把两句话合并成一句话1.Tomwillwinthetennisgame.Itseemsimpossible.ThatTomwillwinthetennisgameseemspossible.主语连系动词表语ThatTomwillwinthetennisgameseemspossible.连系动词表语主语从句主句主语从句：在主句中担当主语的是一个从句，这个从句就叫主语从句。引导词：从属连词：that,whether关系代词：who,whom,whatwhich,whose关系副词：when,where,why由that引导主语从句例句：把两句话合并成一

2、句话Lighttravelsinstraightlines.Itisknowntoall.Thatlighttravelsinstraightlinesisknowntoall.2.Weshouldwashourhandsbeforemeals.Itisnecessary.Thatweshouldwashourhandsbeforemealsisnecessary.由that引导主语从句把两句话合并成一句话3.Everystudentshouldhaveastudyplan.Itisnecessary.Thateverystudentshouldhaveastudyplanisne

3、cessary.4.Studentssayhellototheirteachers.Itispolite.Thatstudentssayhellototheirteachers.ispolite.由that引导主语从句把两句话合并成一句话5.Yourmotherdidn’tattendthepartyyesterday.Itisapity.Thatyourmotherdidn’tattendthepartyyesterdayisapity.6.Tomstolehisclassmate’smoney.Itisafact.ThatTomstolehisclassmate’smoneyi

4、safact.由that引导主语从句把两句话合并成一句话7.Therewillberainytomorrow.Itispossible.Thattherewillberainytomorrowispossible.8.Teenagerssmoke.Itiswrong.Thatteenagerssmokeiswrong.由whether（“是否”）引导的主语从句Willhegoabroad?Itisnotknown.Whetherhewillgoabroadisnotknown.2.Willitraintomorrow?Itisnotknown.Whetheritwillrainto

5、morrowisnotknown.3.Isheapoliceman?Itisnotclear.Whetherheisapolicemanisnotclear.4.Isthefilmstarhappy?Itisnotclear.Whetherthefilmstarishappyisnotclear.由whether（“是否”）引导的主语从句在主语从句中只能用whether（是否），此意义时不能用if替换。我是大王我说了算形式主语It代替that主语从句ThatwestudyEnglishwellisnecessary.ItisnecessarythatwestudyEnglishwe

6、ll.我是傀儡形式主语真正主语第一种：形式主语It代替that主语从句Itis+名词+that从句Itisapitythat…Itisashamethat…Itisafactthat….Itisanhonorthat….等等形式主语It代替that主语从句1.ThatJohnwonagoldmedalisafact.ItisafactthatJohnwonagoldmedal.2.ThatImissedthebeginningofthefilmisapity.ItisapitythatImissedthebeginningofthefilm.3.Thatwewillgotravel

7、lingisgoodnews.Itisgoodnewsthatwewillgotravelling.4.Thatmymotherlosthernewwalletisapity.Itisapitythatmymotherlosthernewwallet.5.ThatMarrymarriedablindmanisapity.ItisapitythatMarrymarriedablindman.6.ThatMarrytoldalietoherhead-teacherisas