(完整版)主语从句超全

Nounclausesasthesubject句子简单句并列句复合句副词性从句形容词性从句名词性从句定语从句主语从句subjectclause宾语从句objectclause表语从句predicativeclause同位语从句appositiveclause比较状语从句地点状语从句时间状语从句让步状语从句条件状语从句目的状语从句方式状语从句结果状语从句原因状语从句什么是主语主语：句子说明的人或事物,一般位于______。句首IlikeEnglish.Thetrainleft.Janeisgoodatplayingthepiano.Toseeistobelieve.Smokingisbadforhealth.Whathehassaidistrue.找出主语(名词)（不定式）（动名词）(从句）主语从句(SubjectClause)第一讲:主语从句的概念，什么是主语从句。在句子中充当主语的就是主语从句。英语名词从句成分的划分是根据句子在从句中的位置划分的，任何一个句子一旦位于某个成分的位置上，它就成了相应的......语从句他通过了考试让老师很高兴。Hepassedtheexam.Itmadetheteacherhappy.Hepassedtheexammadetheteacherhappy.Thathepassedtheexammadetheteacherhappy.如何理解主语从句他何时要来还不清楚。Whenwillhecome?Itisnotclear.Whenwillhecomeisnotclear.Whenhewillcomeisnotclear.理解主语从句Thathewillsucceediscertain.Whetherhewillcomemakesnodifference.Whatweneedismoretime.怎样找出主语从句以及主句和从句结论；判断主语从句的方法；先找到谓语，谓语之前的句子就是主语从句。位置：通常放在主句谓语动词之前或由形式主语it代替,而本身放在句子末尾。主语从句的结构：句子+谓语连接词所连接的句子是从句，从句和之后的谓语构成主句。主语从句+谓语主语从句的句序：it（形主）+that（真主）•陈述句（用that引导）•一般疑问句（用whether引导）•特殊疑问句（用when,where,why,how,who,whom,what,which,whose等引导）充当主语的句子一般疑问句作主语•需要先将疑问句的倒装语序变成陈述句语序，并在句首加上whether来引导，以保留原句的疑问意义。Whetherhewillcometomypartymakesnodifferencetome.他来不来参加我的聚会对我来说无所谓。特殊疑问句作主语•需要先将疑问句的倒装语序变成陈述句语序。Whydinosaursbecameextinctisstillamystery.Whydiddinosaursbecomeextinctisstillamystery.恐龙为什么会灭绝目前还是个未解之谜。【例句呈现】观察下列例句，指出其中所包含的主语从句及引导词:1.Whatisneededforalongtripiscarefulpreparation.该句中主语从句是___________________________，引导词为_____。Whatisneededforawhatlongtrip练一练2.ThatJayZhouwillcometomycityexciteseverybody.该句中主语从句是_______________________________，引导词为_____。3.Whetherwewilltravelabroadornothasnotbeendecided.该句中主语从句是___________________________________，引导词为_________。ThatJayZhouwillWhetherwewillcometomycitythattravelabroadornotwhether4.Whoeverknowsthesecretmustn’ttellothers.该句中主语从句是________________________，引导词为________。5.Itremainsapuzzlewhydinosaursdiedoutsuddenlylongtimeago.该句中主语从句是________________________________________，引导词为_____。Whoeverknowsthewhoeverwhydinosaursdiedwhysecretoutsuddenlylongtimeago主语从句在复合句中作句子的主语。引导主语从句的词有从属连词that,whether,if；连接代词who,whoever,whom,what,whatever,whose,which；连接副词when,where,how,why等。第二讲：主语从句的引导词及各类主语从句一.that引导1.that引导的主语从句，不做成分，无意义，通常不能省略，在句中具有“两不”原则：一、不作句子成分；二、没有实际意义。当它引导的主语从句置于句首时，that不能省略；如果用it作形式主语，则把主语从句放在句末。若that引导的主语从句位于句末，而在句首用了形式主语it，则that可以省略。Itwasapity(that)youdidn'tgotothetalkThathewillcomeiscertain.1.主语从句有时为了使句子结构平衡,避免“头重脚轻”,常用it作形式主语,而把从句放在后面。例如:1.Thathewillrefusethispieceofadviceisimpossible.______________________________________________________________________________2.Thattheyshouldlikeeachotherisnatural._____________________________________*it为形式主语Itisnaturalthattheyshouldlikeeachother.Itisimpossiblethathewillrefusethispieceofadvice.这样就构成了下面一些常用句型:1)Itis/系动词+n.+从句Itisapity/shamethat...遗憾的是……Itisasurprisethat…令人惊奇的是…Itisafact/aproblem/awonder/anhonner/asurprise/nowonder难怪/goodnews/agoodthing/aquestion/that……是事实Itiscommonknowledgethat……是常识*_______________(很遗憾)welostthematch.*______________(这是事实)hecheatedintheexam.ItisapitythatItisafactthat2)Itis/系动词+adj.+从句常见的形容词是It’scertainthat…肯定…Itispossiblethat...很可能……Itis（un）likelythat...不可能……Itisobviousthat…很明显…Itisnecessary\important\natural\clear/right/strange/true/good/wonderful/quite/unusual/evident/worth-white/surprising/interesting/astonishing/doubtful/essential/...that…这类主语从句中，谓语动词很多为（should)+动词原形*_________________(很可能)shewillcomebacktomorrow.*_________________(很明显)thismeasureiseffective.+(should)+do…ItispossiblethatItisobviousthat3)It+不及物动词+从句Ithappenedthat...碰巧……Itoccurredtomethat…我突然想起…*________________(刚好)Icameintotheofficeatthattime.*____________________(我突然想起)Iforgettosenttheletter.IthappenedthatItoccurredtomethat4)It+be+过去分词+从句这些动词有advised有人说/announced据宣布/consider据认为/decided作出决定/foundout据查明/heard有人听说/hoped有人希望/ordered根据命令/pointedout有人指出/remembered有人记得/told据告知/thought有人认为/turnedout结果/wellknown/estimated/expected/hoped//noted/required/demanded/madeclear/discussed/Itissaidthat...据说……Itisknowntoallthat...众所周知……Itisreportedthat...据报道……Itisbelievedthat...据信……;人们相信……Itissuggestedthat+(should）do...建议……Itmustbeadmittedthat…必须承认……Itcannotbedeniedthat…不可否认……Itmustbepointedoutthat…需指出的是……*_________________(据报道)20peoplewerekilledintheaccident.*__________________(建议)weshouldeatmorevegetableanddomoreexercise.ItisreportedthatItissuggestedthat5）.it+特殊动词+that从句常用于这种特殊结构的动词；seem,appear显得，happen碰巧/doesn'tmatter/makenodifference/occured主语从句不可提前。.2.主语从句不可位于句首的五种情况1）.if引导的主语从句不可距于复合句句首2）.It+be+过去分词+从句3）.Itdoesn'tmatterhow/weather......结构中的主语从句不可提前。4）it+特殊动词+that从句常用于这种特殊结构的动词；seem,appear显得，happen碰巧/doesn'tmatter/makenodifference/occured主语从句不可提前。5）含主语从句的复合结构是疑问句时，主语从句不可提前。Isitlikelythatitwillrainintheevening?二.whether/if引导的主语从句。从属连词whether,if用法whether用法，表疑问，是否，起连接作用。不做成分。•1.引导各种名词从句，除否定的宾语从句外•2.用在动词不定式前。•Heseemedundecidedwhethertogoorstay.•3.用在介词后•Frequentlythequestionisraisedastowhethertranslationisascience,anart,oraskill.4.用在动词leave,put,discuss,doubt,wonder后。5.与ornot(直接连用）是否，会不会。Pleasetellmewhetherornotyouagreewithhim.6.与orno(直接连用）总之，无论如何，不论是否Idon'tknowwhetherornoheiswell.7.与nomatter连用，不