2018版高中英语（人教版）必修3同步教师用书：Unit5SectionⅣGrammar

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1、SectionIVGrammar&Writing条分缕析诒法精要细盘点全到析窕畫衣违3码上扫一扫看精彩徼课同位语从句语境领悟阅读下列句子，体会黑体部分用法1•SomepeoplehavetheideathatyoucancrossCanadainlessthanfivedays,buttheyforgetthefactthatCanadais5,500kilometersfromcoasttocoast.2.Thegirlsweresurprisedatthefactthatoceanshipscansailup

2、theGreatLakes.3.Thethoughtthattheycouldcrossthewholecontinentwasexciting.要点精析▼一、同位语从句的引导词类别例词说明从屈连词that，whether二者均在从句中不作成分；that无实义，whether意为"是否”。连接代词who,what等有实义，在从句中作主语、宾语、表语、定语等成分。连接副词when,where,how等有实义，在从句中作时间、地点、方式状语等成分。Fmnotsureaboutthequestionwhetherhew

3、illcome.对于他来不来这个问题，我不太确定。Thefactthatthetransportofthegoodscosttoomuchwasnotdiscussed.运费太高这一事实没有讨论。二、同位语从句应注意的几个问题1.分隔式同位语从句：有时同位语从句与其所说明的名词会被其他成分隔开，从而形成分隔式同位语从句，这样做主要是为了保持句子结构平衡，避免头重脚轻。WordcamethatwewouldhavelessonsonSaturday.有消息传来，我们星期六要上课。1.名词suggestion,ord

4、er,demand,command,request,desire,proposal等后的同位语从句要使用虚拟语气，即从句谓语用"should+do",should可省略。We'dbetteraccepthissuggestionthatwe（should）makegooduseofeveryminute.我们最好接受他的建议，好好利用每一分钟。2.名词doubt（怀疑）后可跟同位语从句，若用于肯定句屮时用whether引导;若用于否定句中吋则用that引导。Thereissomedoubtwhethertheyw

5、illcometohelpus.他们是否能来帮助我们还不确定。There'snodoubtthatonedayacurewillbefound.毫无疑问，总有一天会找到治疗方法。三、同位语从句与定语从句的区别从意义上看从引导词上看作用相当于对先行词的作用thatwh-类引导词同位语从句名词解释，说明无意义，不作成分，不可省略有意义，作成分，其前无意义相当的先行词定语从句形容词修饰，限制that指代先行词，在从句中作主语、宾语、表语，作主语时不可省略，有时可用which代替有意义，作成分，其前有意义相当的先行词；w

6、hether,how,what等不能用来引导定语从句Thefactthatthereisnolifeonthemoonisknowntousall.月球上没有生命这个事实大家都知道。（同位语从句）Thefactthatheoftentalksaboutisuselesstous.他经常谈论的这个事实对我们毫无用处。(定语从句)语法过关▼I.根据语境用恰当的引导词填空I•Itworriedherabitherhairwasturninggray.2.Ihavenoideawecandowiththesewastem

7、aterials.3.thedoctorreallydoubtsismymotherwillrecoverfromtheseriousdiseasesoon.4.Itishopednaturewillneverbedestroyed.5•一IdrovetoZhuhaifortheairshowlastweek.一Isthatyouhadafewdaysoff?6.Therecanbelittledoubtthiskindofclasscanhelpthegiftedchildrentograduateearlie

8、r.7.Ihavesomedoubtshewillcomeontime.【答案】l.that2.what3.What；whether1.that5.why6.that7.whetherII•下列的句子哪些是定语从句，哪些是同位语从句？(1)ThequestionwhetherthePrimeMinistershouldresignmustbedecidedsoon.(2)