名词性从句课件-高考英语一轮复习

i名词性从句复习目录CONTENT1相关定义2主语从句3宾语从句4表语从句5同位语从句相关定义RELEVANTDEFINITIONS1定义及分类定义在句子中起名词作用的句子。分类主语从句宾语从句表语从句同位语从句连接词连接代词（从句缺成分）who(人/主)；whom(人/宾)what(物/主、宾、表)which(“哪一个”，有选择范围)whose(“谁的”+名词，表从属关系)

连接副词（从句不缺成分）表疑问：when(时间)where(地点)why(原因)how(方式)表陈述：that(无成分，意义，只起关联作用)表是否：whether,if主语从句SUBJECTCLAUSE2连接词从属连词that,whether,if连接代词what,who,which,whatever,whoever,whom,whichever连接副词how,when,where,why注意⚠️that在句中无词义，只起连接作用连接代词：主要做主，宾，表，定等连接副词：在句中做状语who,whom——人what——物whatever,whoever——泛指意义形式主语常见句型Itbe+名词+that从句It’sagreatpitythattheydidn’tgetmarried.Itbe+过去分词+that从句It’ssaidthathehasseentheremanytimes.Itbe+形容词+that从句It’ssplendidthatyoupassedyourexam.It+不及物动词+that从句Itissuggested(requested,proposed,desired)that······如何找主语从句一、先找谓语，谓语前的句子就是主语从句。二、it做形式主语，从句做真正的主语，即为主语从句。Thathewillsucceediscertain.Whatweneedismoretime.Itisapitythatwelostamatch.that引导的主语从句that不做成分，没有实际意义，在句首时不能省略，it做形式主语that不能省略。that引导的主语从句，为了避免头重脚轻，通常用形式主语it代替主语从句。Thathewillcomeiscertain.Itisacertain(that)hewillcome.whether/if引导的主语从句意为“是否”，不做成分，不能省略，在句首只能用whether，不能用if。使用形式主语it时,if/whether引导的名词性从句为真正的主语。whether和ornot连用时，不能用if代替。Whetherwe'llgocampingtomorrowdependsontheweather.Itdependsontheweatherwhether/ifwe’llgocampingtomorrow.

连接代词引导的主语从句起连接作用，不能省略，有实际意义，在句中充当主语、宾语、表语或定语。whatever和whoever引导的主语从句不含疑问意义，相当于名词后加一个定语从句。whatever=anythingthatwhoever=anyonewhoWhatyousaidyesterdaywasright.Whowillgomakesnodifference.Whateverwassaidheremustbekeptsecret.

连接副词引导的主语从句起连接作用，不能省略，有实际意义，作状语。Whyhedidn’tcomeyesterdayisunknown.Howthishappendisnotclear.Whenhewillcomeisunknown.=Itisunknownwhenhewillcome.(也可以转换为it做形式主语。)

宾语从句OBJECTCLAUSE3定义在主从复合句中充当宾语。位置位于及物动词，介词或谓语之后分类动词的宾语从句介词的宾语从句形容词的宾语从句引导词

that没有实际意义，不在从句中做任何成分，可省略。eg:Hesaid(that)hecouldcomeontime.1whether/ifwhether/if引导的名从是有一般疑问句或选择疑问句转化而来的。变成从句时，语序由原来的倒装变为陈述。eg:Let’sknowifyoucanfinishtheworkbeforethisweek.2what/when/where/who从句为陈述语序，且引导词不可省略。eg:Hedidn’ttellmehowlonghecouldstayhere.3重点一、当主语是一般现在时，从句时态根据具体情况定。IknowthathestudiesEnglisheveryday.IknowthathehasstudiedEnglishfor4years.二、当主句是一般过去时，从句必须用过去的某个时态。Hesaidthathewouldcomethenextday.Hesaidthathehadfinishedtheworkfor2weeks.三、当从句是客观事实、真理时，用一般现在时。Hesaidthatthesunrisesintheeast.不能省略that的情况1、主句的谓语动词与宾语从句之间有插入语。Ihope,onthecontrary,thathewillstayathomewithus.2、宾语从句是双宾语中的直接宾语。Hetoldmethathewouldcime.3、有多个并列宾语从句中，第一个可省that，后面的不能省。Hesaid(that)thebookwasveryinterestingandthatallthechildrenliketoreadit.不能省略that的情况4、宾语从句的主语是this、that或被this、that修饰时。Theteachersaidthatthatwordwaswrong.5、it做形式主语，从句为真正的宾语时。Ithinkitnecessarythatheshouldstayhere.6、except、but等介词后的宾语从句，that不能省。只能用whether的情况1、在动词不定式前。Ican’tdecidewhethertostay.2、介词后的宾语从句。I’mthinkingofwhetherweshouldgoshould.3、宾语从句提前时，即置于句首表强调时。Whetherhelivesthere,Iwanttoknow.4、与ornot直接连用时。Ican’tsaywhetherornothewillcomeontime.Idon’tknowwhether/ifhewillcomeornot.5、动词discuss,leave,put,doubt后面的宾语从句常用whether。表语从句PREDICATIVECLAUSE4

表语《名词做表语》Africaisabigcontinent.《代词做表语》Whoisyourbestfriend?《形容词做表语》Ifeelmuchbettertoday.《数词做表语》Shewasthefirsttolearnaboutit.《不定式做表语》Herjobistosellcomputers.从句做表语MydreamisthatIcantravelaroundtheworld.Thereasonwhyhewaslatewasthathemissedthecar.Thereasonwhy······is/wasthat············的原因是······

表语从句1、that引导表语从句时不充当成分，无含义，通常不省略。Thefactisthathedoesn’treallytry.注意：如果主语是要求，建议，命令等词，表语从句用“should+动词原形”（should可省略）

要求：request,requirement,insistence···

建议：idea,advice,suggestion,proposal,recommendation,notion···

命令：order,instruction···2、whether引导表语从句（不能用“if”）Thequestioniswhetherthefilmisworthseeing.3、连接代词、连接副词引导表语从句Theproblemiswhowecangettoreplaceher.ThatwaswhenIwasfifteen.

表语从句4、asif/asthough引导表语从句（常用虚拟语气）Shelooksasifshewerehungry.Itisnotasthoughwewerepoor.5、because引导表语从句That’sbecauseyoucan’tappreciatemusic.Sheisveryfamiliarwiththefilm.Thisisbecauseshehasalreadyseenthefilm.6、because的同义词since/as/for不可以引导表语从句。同位语从句APPOSITIVECLAUSE5同位语从句定义：对前面的抽象名词进行解释说明；被解释说明的词和同位语在逻辑上是主表关系。连接词：that,whether/what,who/how,when,whereif不能引导同位语从句。跟同位语从句的名词：news,idea,fact,promise,doubt,thought,hope,massage,suggestion,decision,words(消息),evidence,conclus