[语法综合讲解与练习]名词性从句课件VIP免费

snowingfox在复合句中起名词作用的从句叫做名词性从句。名词性从句主语从句表语从句宾语从句同位语从句连接代词who,whom,whose,which,what,whatever,whoever,whichever,whomever连接词that,whether,if,asif/asthough（不充当从句的任何成分）引导名词性从句的关联词连接副词how,why,when,wherehowever,wherever,whenever,how构成的短语，（howmany/much/Long/soon/often…)在名词性从句中一律用陈述句的语序，即使从句表达的是疑问含义。Theproblemiswhathehasdonetothelittleboy.问题是他对那个小男孩做了些什么。1.主语从句在句中作主语的句子叫主语从句。主语从句通常由从属连词that，whether和连接代词what,who,which,whatever,whoever以及连接副词how,when,where,why等词引导。1.that在从句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当成分。ThatwemustmasterEnglishwordsasmanyaspossibleisveryimportant.Whowillwinthematchisstillunknown.WheretheEnglisheveningwillbeheldhasnotyetbeenannounced.Thathestoleabikewastrue.Whathewantstotellusisnotclear.单个的主语从句作主语时，谓语动词用单数形式。如果是两个或两个以上的主语从句作主语，谓语动词则用复数形式。Whereandwhenhewasbornhasnotbeenfound.Whenthepersonwasmurderedandwhyhewasmurderedarestillunknown.有时为避免句子头重脚轻，常用it代替主语从句作形式主语放于句首，而把主语从句置于句末。主句的谓语动词一般用单数形式。常用句型如下：1）It+be+名词+that从句afact,agoodidea,anhonor,amystery,aquestion,apity,ashame,apleasure,awonder,challenge,commonknowledge,fun,progress.Itisacompletemysteryhowtheprisonerescaped.Itiscommonknowledgethatthewhaleisnotfish.2）It+be+形容词+that从句Amazing,appropriate,better,certain,clear,evident,good,important,likely,lucky,unlikely,Probable,natural,necessary,plain,possible,true,wrong.Itiscertainthatyoursonwillwininhisexamination.Itisverydifficultwhatyouadoning.3）It+不及动词+that从句Appear,follow,happen,matter,occurtosb,seem.Itnowappearsthattheyareinurgentneedofhelp.IthappenedthatIwasnottherethatday.Itsuddenlyoccurredtohimthatthekeysmightbeleftinthecar.4）It+be+动词的过去分词+that从句accepted,admitted,announced,arranged,believed,decided,demanded,estimated,expected,found,hoped,known,noted,pointedout,proved,reported,rumored,said,seen,shown,stressed,suggested,unknown.Itisknowntoushowhebecameawriter.Ithasnotbeendecidedwhowillperformtheoperation.Itmustbekeptinmindthattheoryiscombinedwithpractice.Itisapitythat…it’sashamethat…It’snowonderthat…Itissuggestedthat…It’srequestedthat…It’sproposedthat…,It’sdesiredthat…注意:以上四种句型中１２４，在表示建议,要求,命令,愿望,义务,责任时,从句中用should(/)+do.在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“should+do”．Itisadvisablethatshe(should)takeacoupleofdaysofrest.Itisnecessarythatsomeimmediateeffort(should)bemade.Itisquitenaturalthatheshouldhavebeenrespectedbythestudents.Itissuggestedthateachstudent(should)singasonginEnglish.Itisstrangethatheshouldsayso.Itisagreatpitythatyoushouldthinkso.ItisnosurprisethatCarlshouldhavewonthegame.以上句中的that从句如果其谓语动词不用should+do形式，则不带感情色彩，只表事实．2.宾语从句名词句用作宾语的从句叫宾语从句。引导宾语从句的关联词与引导主语从句表语从句的关联词大致一样，在句中可以作谓语动词或介词及非谓语动词的宾语。1.)由连接词that引导的宾语从句由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的that不可省。HehastoldmethathewillgotoShanghaitom...