表語從句[觀察例句]1．Onetheorywasthatbadaircausedthedisease.2．Thequestioniswhowillbethesuccessfulapplicantforthesummerjobatthelawfirm.3．HerconfusioniswhethersheshouldsticktoherownwayoflifeorfollowtheAmericanway.4．WhatJohnSnowwasdeterminedtofindoutwaswhythe1854outbreakofcholerainLondoncouldhavecausedover500deathswithintendays.5．Takingayearofffromschooltotravelabroadiswhatisgenerallycalledagapyear.[歸納用法]1．所有例句中的黑體部分都位于系動詞be后，作表語，故都是表語從句，這些表語從句在詞性上相當于一個名詞。2．例1由從屬連詞that引導；例2由連接代詞who引導；例3由從屬連詞whether引導；例4由連接副詞why引導；例5由連接代詞what引導。表語從句放在連系動詞之后，充當復合句中的表語。表語從句就是指一個句子作為表語，說明主語是什么或者怎么樣。一般結(jié)構(gòu)為“主語＋系動詞＋表語從句”?？山颖碚Z從句的連系動詞有be，look，remain，seem等。1．從屬連詞that引導的表語從句從屬連詞that的用法：①無意義②不充當成分③不可省略Thereasonforhisabsenceisthathehasn'tbeeninformed.他缺席的原因是他沒接到通知。Mysuggestionisthatweshouldtellhim.我的建議是我們應(yīng)該告訴他。2．從屬連詞whether引導的表語從句Thepointiswhetherweshouldlendhimthemoney.關(guān)鍵在于我們是否應(yīng)該借錢給他。[名師點津]if不能引導表語從句。3．連接代詞和連接副詞引導的表語從句Theproblemiswhoisreallyfitforthehardjob.問題是誰才真正適合做這份艱苦的工作。ThisiswhatIaminterestedin.這就是我所感興趣的。That'swhereIfirstmether.那就是我第一次遇見她的地方。4．because，asif/though等引導的表語從句It'sjustbecausehedoesn'tknowher.這僅僅是因為他不認識她。NowitseemsasthoughshehadknownMillieforyears.現(xiàn)在好像她認識米莉已有好多年了似的。Itsoundsasifsomeoneisknockingatthedoor.聽起來好像有人在敲門。[即學即練1]用where，when，that填空①Lookatthehighmountain.Thatiswherewewillget.②Thefirsttimewemeteachotherwaswhenwestudiedinthatschool.③Myadviceisthatwe(should)worktogether.5．why和because引導的表語從句的區(qū)別That'swhy...意為“那是……的原因”，強調(diào)結(jié)果That'sbecause...意為“那是因為……”，強調(diào)原因Ididn'tphoneher，andthat'swhyshegotangrywithme.(強調(diào)“沒打電話”這一結(jié)果)我沒有給她打電話。那就是她對我生氣的原因。Ididn'tphoneher，andthat'sbecauseIgotangrywithher.(強調(diào)“生氣”這一原因)我沒有給她打電話。那是因為我生她的氣了。[名師點津]reason作主語時，后面的表語從句表示原因時要用that引導，不宜用because。6．表語從句中的虛擬語氣在表語從句中，表示間接的命令、要求、請求、建議、決定等，主句中的主語通常是：advice，suggestion，proposal，request，order，idea等，從句謂語形式是“should＋動詞原形”(should可以省略)。Myadviceisthatyou(should)practisespeakingEnglishasoftenaspossible.我的建議是你應(yīng)該盡可能經(jīng)常地練習說英語。[即學即練2]用why，that，because填空①Itwasraininghard；thatwaswhyIcamelate.②Icamelate；thatwasbecauseitwasraininghard.③ThereasonwhyIcamelatewasthatitwasraininghard.Ⅰ.單句語法填空1．Hegotcaughtintheheavytraffic.Thatwaswhyhewaslate.2．Energyiswhatmakesthingswork.3．Wedidn'tsetout；itwasbecausewewantedtowaituntilourmothercameback.4．Themostpleasantthingoftherainyseasonisthatonecanbeentirelyfreefromdust.5．Ashipinharborissafe，butthat'snotwhatshipsarebuiltfor.6．ThetroubleisthatIcan'tfindmyway.7．Whathewantstoknowiswhetherwecanfinishourworkbytomorrowmorning.8．ThereasonwhyIwassadwasthathedidn'tunderstandme.9．Thatiswhatwearelookingforwardto.10．Samlookedasifhedidn'thaveacareintheworld.Ⅱ.完成句子1．簡再也不是十年前的那個樣子了。Janeisnolongerwhatshewastenyearsago.2．我獲悉了你對英語校報的改革方案，那就是為什么我寫信表達我自己觀點的原因。IreadaboutyourreformoftheschoolEnglishnewspaper，andthat'swhyI'mwritingtovoicemyopinion．3．問題是他們是否能幫我們。Thequestioniswhethertheywillbeabletohelpus．4．那是因為他沒有理解我。Thatwasbecausehedidn'tunderstandme．5．事實就是我們隊已經(jīng)贏得了比賽。Thefactisthatourteamhaswonthegame．Ⅲ.短文語法填空(用適當?shù)倪B接詞填空)Everyoneknew1.thatWendywasafamouswriter，butnooneknew2.whereshecamefromand3.whethershewasbornin1961wasstillamystery.4.Whattheydidknowwas5.thatshewaslovedbypoorpeoplebecauseshealwayshelped6.whoeverwasinneedofmoney.Wendywasgenerousandhelpful，butsomepeoplethoughtshewaschasingfame.Wendysaidshedidn'tunderstand7.why