主语从句详解

主语从句很详细一、概述在句子中起名词作用的各种从句统称为名词从句。根据在句子中的语法作用，这种子句可以分为主语、同一个条件子句、表语从句、宾语从句。第二，主题条款主要有四类(1)连接词that领导的主语子句：诱导词that无意义/句子中没有成分/不能节省。示例：that you will win the medal seems unkeley。That you are so indivirent boters me。that she survived the accident is a miracle。(2)引导连接词whether的主语子句： whether不能在语义(例)/句子中创建/存储组件。注意：引导主语子句只能使用whether，不能使用if。示例：whether we will hold a party in the open air to morrow depends on the weather。whethereshe is coming or not doesn t matter too much .(3)用连接代词引导的主题子句在连接代词whose、whom、which、what、whoever、whomever、whichever、whatever领导的名词子句中那个连接代词在句子中充当词类，承担一定的成分。示例：what you need is more practice。what I want to know is this .Whatever we do is to serve the people。注：whatever/whoever的功能Whatever，whoever在主语部分没有疑问的意思。引导主语，在条款中用作主语、宾语、表语等。Whatever=anything thatWhoever=anyone who。注意和whatever，whoever领导的让步状语从句。whoever breaks the law should be punished。(主语从句)(=anyone who breaks the law should be punished。）Whoever breaks the law，he should be punished。(让步状语从句)(=no matter who breaks the law，he should be punished。）(4)连接词when，where，why，how是名词子句(其连接词有意义，在句子中用作副词)。）例如： where we should leave it is a problem。when they will comhan t been made pubic .第三，注意主题条款的： it构成。(1)由连接词that带领的主语子句，通常不是放在句子后面，而是把代词it格式化。示例：that light travels in straight lines is known to all .=it is known to all that light travels in straight lines。when the plane is to take off has not been announced .=it has not been announced when the plane is to take off。但是，当what引导的主语表示“的”时，通常不使用it作为形式主语。）:It is a book what he wants无效。:What he wants is a book。另外，在使用形式主语代替it主语的时候，要注意与as领导的官刑上从句的区别。考试比较：it was reported that the us was under the terrorist attack。As was reported，the us was under the terrorist attack。(2)常用作正式主题的复句结构A.It is名词子句It is a fact that .事实是.It is good news that.好消息It is a question that.问题地It is通用知识文库that.常识有类似的名词：阿皮特；神奇女侠；神奇女侠。A good thing；没有底片；Surprise等。例如：it is a mystery to me how it all happened。it is common knowledge that the whale is not a fish。it is no surprise that bob should have won the game。Its a pity that you missed the film .B.It is形容词子句It is necessary that.我需要.It is clear that.我知道.It is likely that.也许吧.It is important that.重要的是.有类似的形容词：StrangeNaturalObviousTruegood wonderful；PossibleUnlinkQuite联合国大学；Certain事件；worth-while；SurprisingInterestingAstonishing，etc。例如：it is doubtful whether she will be able to come。it was really astonishing that he refused to talk to you。it is essential that he should be here by the weekend。it seems obvious that we cannot go on like this。it is neceary that you(should)master the computer。it is important that a student learn English well。it is likey that a hurricane will arrive soon。要注意，在这些主语中，谓语动词用了很多“(should)动词原形”，即假设法。C.It is过去分词It is said that.听着.It is reported that.据报道.It has been proved that.已证明.It must be proved that .你必须指出.有类似的过去分词：knownEstimatedExpectedBelievedThought霍普德；NotedDiscussedRequiredDecidedSuggestedDemandedMade clearFound out，etc .示例：it is thought that he is the best player。it is estimated that the vase is 2000 years old。it is used to be thought that a new star must be due to a collision bets。it has not been made clear when the new road is to be opened to traffic。it is said that he was killed in the earth quake。D.it seems(happened/appears/doesn t matter/makes no difference/occurred).)that.It seems that they will win the game。it makes no difference whether he will attend the meeting or not .it does not matter if I missed my train。好的，波芬ed that I saw him yesterday。主从式练习1._ _ _ _ _ _ _ _ as muchas 1-fifthofalltimberharvesstedisnotused。A.Theestimate B.TheestimatedC.they are estimated d . itisestimatedthat2._ _ _ _ _ _ _ _ _ _ some mammls cameteliveintheseaisnotknown。A.WhichB.SinceC.AlthoughD.How3._ _ _ _ _ _ _ _ _ _ _ _ wehavenevedisattributdtotheguidanceofourparents。A.whoeverb。whatever C. howeverd。that4._ _ _ _ _ _ _ _ wealthydratnecessarilymeathatamanisgreedy。A.forthereasonthathesb。jubecause EISC.thereasonofbeingd。thathathathes5.alt Hough _ _ happeneedinthisdevelopedcountry soundslikescienceftion，it could occur elsewhereintheworld。A.whichB.whatC.howD.it6._ _ _ _ _ _ _ _ _ _ shehadoforgottendtotakehernotebook。A.that occurredtoherb。sheoccurredthatC.toherthat occurredd。itoccurredtoherthat7.iamsure that _ _ _ _ shesaidiswrog。A.whichB.allC.thisD.what8.welcostourwayintheforest，and _ _ _ made matter sworse was that itwastengdark。A.tharb .whichc .itd。what9._ _ _ _ _ _ _ ornotisstilluncertain。A.he A.HescomingB.IfheiscomingC.that comingd。whether hes coming10.Its_hellbeabletocome。A.doubtwhetherb . doubtful c . doubt itd。doubtful whether11._ _ _ _ _ _ _ _ heisatworkshiheartofthebigityorathomeinthequiet suburb，dick slifeistiedtomachhines。A.WhetherB.TillC.IfD.Unless12._ _ _ _ _ _ _ _ _ _ _ heightsurprisedandfrightenedhim。A.tharb .whenc .whatd .which13._ _ _ _ _ _ _ is warm sunshine。A.whatdoweallneed . b . whatalollweneedC.Whatweneed D.Whatweallneed14.isapittythatheshouldfeelsoupset。A.WhatB.ThatC.HeD.It15._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ussomuchabouthestructureandearly historyofthemomyA.RemarkableB.QuiteremarkablyC.itisremarkablethand . itisremarkablefact16._ _ _ _ _ _ _ _ younominate illbeelected。A.WhoB.WhomC.WhomeverD.Thats17._ _ _ _ booksyouborromustbereturedwithinweek。a . whatb . whichc . whichever d . that s18._ _ _ _ _ _ ofusgetshomefirststartscatkin。A.whob .whichc .whichever D. anyone1._ _ _ _ _ _ _ _ _ _ makes mistakes must corre