新教材高中英語Unit2Alifeswork突破語法大沖關(guān)學(xué)案（含解析）外研版選擇性

Unit2Alife’swork表語從句在復(fù)合句中，位于系動詞之后作表語的從句稱為表語從句。一、that，whether引導(dǎo)的表語從句[觀察例句]1．ThetroubleisthatIhavelosthisaddress.2．Whathewantstoknowiswhetherwecanfinishourworkbytomorrowmorning.[歸納用法]1．連接詞that在從句中只起到連接作用，不作任何成分。2．連接詞whether起連接作用，意為“是否；究竟；到底”，在句中不作任何成分。二、asif/though，because，why引導(dǎo)的表語從句[觀察例句]1．Itsoundsasif/thoughsomeoneisknockingatthedoor.2．That'sbecausehedidn'tunderstandme.3．That'swhyhegotangrywithme.[歸納用法]1．a(chǎn)sif引導(dǎo)表語從句時，可以和asthough互換。2．a(chǎn)sif/though引導(dǎo)的表語從句常置于系動詞look，seem，sound，be，become等后面。3．That'sbecause...強(qiáng)調(diào)原因；That'swhy...強(qiáng)調(diào)結(jié)果。[名師點(diǎn)津]reason作主語時，后面的表語從句表示原因時要用that引導(dǎo)，不宜用because。[即學(xué)即練1]單句語法填空①ThereasonwhyIwassadwasthathedidn'tunderstandme.②Whatcosthimhislifewasthathewastoocareless.③Allshe'sworriedaboutiswhetherheisallright.④Fromspace，theearthlooksblue.Thisisbecauseaboutseventy-onepercentofitssurfaceiscoveredbywater.三、連接代詞和連接副詞引導(dǎo)的表語從句[觀察例句]1．Theproblemiswhowecangettoreplaceher.2．Besuretobewithastrongawarenessthatyouarewhatyoueat!3．Thequestionishowhedidit.4．Theirdifficultyiswheretheycanraiseenoughmoney.[歸納用法]1．連接代詞who，whom，whose，what，which，whoever，whatever，whichever在表語從句中充當(dāng)主語、賓語或定語。2．連接副詞where，when，how，why在表語從句中充當(dāng)狀語。[即學(xué)即練2]單句語法填空①Grandmapointedtothehospitalandsaid，“That'swhereIwasborn.”②Theynevergetangryandarealwayskindtothestudents.That'swhythechildrencanalwaysgetonwellwiththeirrobotteachers.③Whatpuzzlesmeishowyoucouldtellhewasathiefwhenyoufirstsawhim.④Whatworriesusmostiswholetoutofthesecret.Ⅰ.單句語法填空1．ThetroubleisthatIcan'tfindmyway.2．Withouthissupport，wewouldn'tbewherewearenow.3．Thisiswhatmyfatherhastaughtme—toalwaysfacedifficultiesandhopeforthebest.4．Byboatistheonlywaytogethere，whichishowwearrived.5．Hegotcaughtintheheavytraffic.Thatwaswhyhewaslate.6．Energyiswhatmakesthingswork.7．Wedidn'tsetout;itwasbecausewewantedtowaituntilourmothercameback.8．Themostpleasantthingoftherainyseasonisthatonecanbeentirelyfreefromdust.Ⅱ.完成句子1．Itlooksasif/thoughheweredrunk.看起來他好像喝醉了。2．Thequestioniswhoistoblameforthisaccident．問題是誰對這起事故負(fù)有責(zé)任。3．MybeliefisthatIwillsucceedbyworkinghard.我相信通過努力我會成功的。4