名词性从句学案-高考英语一轮复习

名词性从句学案高中英语三大从句：1.定语从句：限制性定语从句非限制性定语从句2.状语从句3.名词性从句：主语从句宾语从句表语从句同位语从句名词性从句的含义所谓名词性从句即是因为该从句具有名词的性质与功能，故以名词性从句来命名。四类从句判定的依据主要根据从句所处的位置关系来进行。主语从句：作句子主语的从句叫主语从句。eg.Whethertheproblemissolvedisuncertain.问题是否解决尚未确定。宾语从句：作句子宾语的从句叫宾语从句。eg.Ifirmlybelieve(that)tomorrowwillbebetter.我坚信明天会更好。表语从句：位于系动词之后作表语的从句叫表语从句。eg.Helookedasif/asthoughhewasill.他看起来好像生病了。同位语从句：说明其前面的名词的具体内容的从句叫同位语从句。eg.Ihavenoideathatyouhavealreadye.我不知道你已经来了。引导名词性从句的引导词从句引导词分类引导词用法名词性从句从属连词that(无意义)不作成分，无意义whether/if(是否)asif/asthough(好像)because（因为）注：此栏只引导表语从句不作成分，有意义连接代词what（什么）whatever(无论什么)作主语、宾语、表语、定语，有意义which(哪一个)whichever(无论哪一个)who（谁）whoever(无论谁)whom(谁)whomever(无论谁)whose（谁的）连接副词when(时候)whenever(无论何时)作状语，有意义where(哪里)wherever(无论在哪)why(为什么)how(怎样)+oftenlong/much/soonhowever(无论如何)eg.1.Hethoughtthewarwasterrible.2.Thequestionishewillarriveontime.3.It’sapitywecan’tgo.4.Thequestionshoulddothisjobrequiresconsideration5.Iwanttoknowwe’llgo.6.Idon’twanttoknowyouaretalkingabout.7.Shetreatshimhewereastranger.8.Thereisnodoubtweshouldprotectourenvironment.三、whether与if引导名词性从句的用法辨析whether和if都可以表示“是否”，但是在引导具体的名词性从句时，两者是有区别的：只用whether不用if引导的从句可以用if来引导的从句(if表示“是否”)1.主语从句置于句首时1.动词或形容词后面的宾语从句2.表语从句3.同位语从句4.介词后面的宾语从句2.it作形式主语而后置的主语从句也可用if来引导。如：Itisnotcleartomeifshelikesthepresent.5.直接与ornot连用6.在不定式前，与不定式构成todo结构eg.1.______weshallholdameetinghasn'tbeendecidedyet.2.Ithasn'tbeendecidedyet______weshallholdameeting.3.Theproblemis______wefinishthetaskontime.4.Shedoesn'tdecide______totellherhusbandthetruth.5.Iwonder______thenewsistrue.6.I'mnotsure______Icanpasstheexamsuccessfully.7.Iwanttoknow______ornotthetraingoestoKingStreet.8.Wediscussed______wecangotherebybus.四、Practice.1.ItisafactEnglishisbeingacceptedasaninternationallanguage.2.________________we'llgocampingtomorrowdependsontheweather.3._______________leavestheroomlastoughttoturnoffthelights.4.Sarahhopestobeeafriendof________________sharesherinterests.5.Theyreceivedorders____________thework（should）befinishedbytheendofthismonth.6.Somepeoplebelieve_______________hashappenedbeforeorishappeningnowwillrepeatitselfinthefuture.7.Pickyourselfup.Courageisdoing________________you'reafraidtodo.8.Exactly_________________thepotatowasintroducedintoEuropeisuncertain,butitwasprobablyaround1565.9.Itisdifficultforustoimagine______________lifewaslikeforslavesintheancientworld.10._____________isrequiredintheregulationsthatyoushouldnottellotherpeoplethepasswordofyouremailaccount.11.Iwassurprisedbyherwords,whichmademerecognize________sillymistakesIhadmade.12.Itisnoneofyourbusiness_____________otherpeoplethinkaboutyou.Believeinyourself.13.Asanewdiplomat,heoftenthinksof______________hecanreactmoreappropriatelyonsuchoccasions.14.Thenoticecamearoundtwointheafternoon_________themeetingwouldbepostponed.15.Imadeapromisetomyself______________thisyear,mylastyearinhighschool,wouldbedifferent.16.Asmanyasfivecoursesareprovided,andyouarefreetochoose________suitsyoubest.17.Onereasonforher