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1、名词性从句名词性从句相称于名词,可分别作主句的主语、表语、宾语和同位语。因此，名词性从句厅分为主语从句、表语从句、宾语从句和同位从句。(一）引导名词性从句的连接词1、连接代词：wo, whose,who, hat,whih。有词义，在从句中担任成分,如主语、表语、宾语、或定语等。2、连接副词:wh, hr， hy, how。有词义,在从句中担任成分，作状语。3、连接词:that, whethe,if, as if。that 无词义，在从句中不担任成分，有时可省略;f(whthr), as f虽有词义,但在从句中不担任成分。注意：连接代词与连接副词在句中不再是疑问句,因而从句中谓语不用疑问式。连
2、接代词与连接副词在从句充当句子成分,连接词whehe 和f（与否)，aif(好象）在从句中不充当句子成分，只起连接作用。根据句义，如果连接代词与连接副词,whthr、i 和 if都用不上时，才用tha作连接词（that自身无任何含义)。(二）主语从句1、主语从句在复合句作主语。e ho wl o i notpotan2、用it作形式主语,主语从句放在句末。.g. I doesn matte so much whethe yu wcme or nt.3、tht引导主语从句时,不能省略。.g. at hsuddeny fellil at week mdussuprse.(三）表语从句1、表语从句在
3、复合句中作表语，位于系动词之后。e.g. The qustion ws wo culd gothee2、引导表语从句的连接词at有时可省去。e.g. My idea s (tat) eant or omradeso epin thewk（四）宾语从句、宾语从句在复合句中作宾语。引导宾语从句的连词tha一般可省略。e.g. I hope (that） verything s lrih.2、介词之后的宾语从句,不可用which或if连接，要分别用hat或 whter。g. m intereted in hther ouveinidthe work. Im itrestedin wat youvea
4、id.3、hehe与if都可以引导宾语从句，常可互换。但下面状况不能互换。宾语从句与否认句时，只用if,不用hthr。e.g I wonde if it desnt rain.用f 会引起误解，就要用whether。e.g. le tm n wether yu wnto o.（此句如果把wether改成if，容易当成条件句理解)宾语从句中的wethr 与or not直接连用,就不能换成if；不直接连用,可换。eI dont know wetheornot thrpo s re.I dontnow eter/ ifth report isrue or not.介词后的宾语从句要用hetr引导。w
5、her可与不定式连用。whether也可引导主语从句、表语从句、同位语从句，还可引导让步状语从句，以上均不能换成if。但引导条件从句时,只能用f，而不能用whthe。eg. I depens on whether weave nouh time. Teyont know hete togo thee. Please come see m f y hveime.（五）同位语从句同位语从句在句中作某一名词的同位语，一般位于该名词（如：new,fct, ide, sgetion, romise等）之后，阐明该名词的具体内容。eg. Ihav niea enheill b bac.he ft ta e
6、 ad not sad anthngspie everyby.练习:名词性从句一、判断下列各句哪句具有名词性从句，并指出是什么从句：. Chia s no longer wht it usd to e2Teuth tat t erth ur around th sun is own to ll.3. Iws snowg whn he rrivedatthe taion.4. How he peruaed te mager t nge he pln iterestint us al.5 Te news that thy ad won t game soon speadove tewole coo
7、l6. The news tha u told m ysterayws ealydisappintin.7. hat i wereL Xun used t live.8. Hspokeshe undestod wha e wstaknabot9 Do o remember htea who auhtuglish atmidd scho?10. I wonde wy shrfuse my invitaton.二、用合适的连词填空：1. I cnt dcide _ dctionaryI shoud buy.2 at_ e reused my nviion. Iamvery intreted i _
8、 h ha iprovdhisprnuciaion inuch a hor time.4. _ e nedismetime.5Th at_ se a t aid nythin a meetingurrisedeebdy.6. _ and _ thy will meet has not beenecddyet.7. ese tel me _ you arewang fr.8. Istat _ you are okng fo？9. Wld yople tll me _ thnerest post office is?10. I ot now_ e will agree th pln or not.
9、三、选择填空： Do you se _ ean？A that./C.howD. wht2Tll m_ is n yur d.A tB.whaC.ic D.w3. must stick to _ wehave gred on.AwhB. that. /D.how4. etme e _.A. ta cn I rar theioB. whethr -I a reair t diC. can repir therdio. whethe can repair the raio5 Kep nmin _.A. ta thteaher saidB hat d thetechesaC. tatdid theea
10、hersayD. whathe teacher said6Cld u avi me _？A.wic bokshould Ired fistB. wht bok houlI read frtC.tat ook 1 huld read firstD whch book I should ad irs7. He was citiczd or_.A h hd done i. what he hd done C. whathad he doe D. that h a dneit Woud yo kidly tlme_？A. hw can getto the ingRilwa tton. how an g
11、et ttheBeijing ailwy StaionC wherecan It to heBiing RaiyStationDwethercanI gt the BeijigRaiay tatio. rs. Smitws erymuchimpressed y _A.wha hadshe seen i CinB. thatshe had e in CinaC. t she had seen in hina ich se sn inChin10. W took it f rate _A.that t were nt omig. at were they nocomngC. the wer cm ntD wer to coining1 I really dontnw _A. I hold d ntB. watshu I dnxC. wI shudo exD. how hod d ext12. I afrid_.A. thelttle irl wl hv oeoerated onB.tha illthe littlrl hveo oprat oC th littl grlwill have to perat nD. that wll th litle ir hae to be oprate on13. e walked to_ A.eedid I stand B. wee I stoo
