2017-2018学年人教课标高一英语必修3辅导Unit5CanadaGrammar

同位语从句【语境展示】观察下面句子，并试着归纳同位语从句的用法要点。1.Thereisageneralbeliefthatthingswillsoongetbetter.2.Thefactthatwedidn'twinwhenweweresocloseisverydisappointing.3.Thereisnotmuchhopethattheyarestillalive.4.There'salwaysapossibilitythathemightgobacktoSeattle.5.ThethoughtthatImightnothaveajobnextyearisabittroubling.6.ImadeapromisethatIwouldn'ttellanyoneaboutthat.7.I'mnotsurewheremynecklaceis,butIhaveaprettygoodideawhotookit.8.Shehadherdoubtswhetherhewouldhelpher.9.Shedoesn'thaveanyideawherethey'vegone.10.Ihavenoideawhythetelevisionisn'tworking.11.BobgotthenewsfromMarythatthesportsmeetinghadbeenputoff.12.Wordcamethatourdutieswouldbechanged.【自我归纳】在主从复合句中，用作同位语的从句，叫同位语从句（句1句12）。一、同位语从句一般跟在某些抽象名词后面，如belief,fact,hope,possibility,thought,promise,idea,doubt,news,word等，用以说明或解释该名词的具体内容（句1句12）。二、同位语从句通常由that引导，that不在从句中充当成分，一般不能省略（句1句6）；同位语从句也可以由________,whether,where,why等引导（句7句10）。三、同位语从句有时可以不紧跟在它所解释的名词后面，而是被别的词隔开，以使整个句子的结构显得平衡（句11、句12）。【拓展】1.suggestion,order,request,requirement等表示建议、命令、要求等含义的名词后的同位语从句中谓语动词要用“should+动词原形”，其中should可以省略。如：Theydidn'tlikemysuggestionthatwe(should)allsharethecost.Hegaveordersthatthework(should)bestartedimmediately.Sheleftheraddresswitharequestthatanymail(should)besentontoher.Itisalegalrequirementthatyou(should)haveinsuranceforyourcar.2.同位语从句与定语从句的区别同位语从句相当于名词，与其说明的名词是等同关系，即说明它前面的名词的内容；而定语从句的作用相当于一个形容词，与它的先行词是修饰与被修饰的关系，即限定它前面的名词的内容，或加以补充说明。如：ThenewsthatMadgehaddiedtookeveryonebysurprise.（同位语从句）Thenewsthatweheardjustnowisencouraging.

（定语从句）引导同位语从句的that是一个连词，在从句中不充当任何成分；而引导定语从句的that是关系代词，除起连接作用外，还在从句中充当主语、宾语等。如：Thisevidencesupportstheviewthatthereistoomuchviolenceontelevision.（同位语从句）Theviewsthatareexpressedinthisbookarepurelythoseoftheauthor.（定语从句）【即学即练】用适当的连接词填空。Thefollowingarementsbyaresident(居民),afireofficerandaclimateexpertaboutarecentflood.Resident：Nobodythought1.________floodingthisbadwouldhappenagain,butastheriverlevelrose,wehadtofacethefact2.________we'dhavetoleaveourhomes.Personally,Ithinkfireofficersshouldbeheldwhollyresponsible.3.________ithasbeenrainingheavilyhereforfivedaysshouldhavewarnedthemthatafloodwasing.Theyshouldhavebeenbetterpreparedtohelpus.Fireofficer:Idon'tthink4.________manyresidentssaidisfair.Todayisapublicholiday.Thisis5.________manyofourstaffweren'theretohelpwiththerescue.However,wewarnedresidentsyesterday6.________theymighthavetoleavetheirhouseswithlittlenotice.However,7.________madetheevacuation(疏散)difficultwasthattheywantedtotakelargeamountsofpersonalbelongingswiththem.Ihavenoidea8.________residentsjustthinkit'sallourfireofficers'fault.Climateexpert:Weholdthebelief9.________climatechangeisgoingtoincreasetheriskofflooding,andanumberofstudieshavesuggested10.________winterriverlevelsthroughoutthecountrywillbemuchhigherthaninthepast.Unfortunately,thesituationinthisareaisworsenedbythefact11.________somanytreeshavebeencutdownonthehillsaroundhereandrainwaterflowsmorequicklyintotherivers.Sothere'sarealpossibility12.________

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