[語(yǔ)法綜合講解與練習(xí)]名詞性從句課件

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1、名詞性從句N(xiāo)OUNCLAUSESsnowingfox在復(fù)合句中充當(dāng)主語(yǔ)、賓語(yǔ)、表語(yǔ)、同位語(yǔ)、介詞賓語(yǔ)的句子叫做名詞性從句。名詞性從句主語(yǔ)從句表語(yǔ)從句賓語(yǔ)從句同位語(yǔ)從句連接代詞who,whom,whose,which,what,whatever,whoever,whichever,whomever連接詞that,whether,if,asif/asthough（不充當(dāng)從句的任何成分）引導(dǎo)名詞性從句的關(guān)聯(lián)詞連接副詞how,why,when,wherehowever,wherever,whenever,how構(gòu)成的短語(yǔ)，（howmany/much/Long/soon/often…)在名詞性從

2、句中一律用陳述句的語(yǔ)序，即使從句表達(dá)的是疑問(wèn)含義。Theproblemiswhathehasdonetothelittleboy.Whathashedonetothelittleboy?Canwedrinkwaterbeforemedicalexamination?Theproblemiswhathehasdonetothelittleboy.Idon’tknowwhetherifwecandrinkwaterbeforethemedicalexamination.WhyshouldwelearnEnglishwell?WhyweshouldlearnEnglishwelldoesn

3、’tneedanyfurtherexplanation.1.主語(yǔ)從句在句中作主語(yǔ)的句子叫主語(yǔ)從句。主語(yǔ)從句通常由從屬連詞that，whether和連接代詞what,who,which,whatever,whoever以及連接副詞how,when,where,why等詞引導(dǎo)。1.that在從句中無(wú)詞義，只起連接作用；連接代詞和連接副詞在句中既保留自己的疑問(wèn)含義、又起連接作用，在從句中充當(dāng)成分。ThatwemustmasterEnglishwordsasmanyaspossibleisveryimportant.Whowillwinthematchisstillunknown.Wheret

4、heEnglisheveningwillbeheldhasnotyetbeenannounced.Thathestoleabikewastrue.Whathewantstotellusisnotclear.單個(gè)的主語(yǔ)從句作主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞用單數(shù)形式。如果是兩個(gè)或兩個(gè)以上的主語(yǔ)從句作主語(yǔ)，謂語(yǔ)動(dòng)詞則用復(fù)數(shù)形式。Whereandwhenhewasbornhasnotbeenfound.Whenthepersonwasmurderedandwhyhewasmurderedarestillunknown.有時(shí)為避免句子頭重腳輕，常用it代替主語(yǔ)從句作形式主語(yǔ)放于句首，而把主語(yǔ)從句置于句末。主句

5、的謂語(yǔ)動(dòng)詞一般用單數(shù)形式。常用句型如下：1）It+be+名詞+that從句afact,agoodidea,anhonor,amystery,aquestion,apity,ashame,apleasure,awonder,challenge,commonknowledge,fun,progress.Itisacompletemysteryhowtheprisonerescaped.Itiscommonknowledgethatthewhaleisnotfish.2）It+be+形容詞+that從句Amazing,appropriate,better,certain,clear,evid

6、ent,good,important,likely,lucky,unlikely,Probable,natural,necessary,plain,possible,true,wrong.Itiscertainthatyoursonwillwininhisexamination.Itisverydifficultwhatyouadoning.3）It+不及動(dòng)詞+that從句Appear,follow,happen,matter,occurtosb,seem.Itnowappearsthattheyareinurgentneedofhelp.IthappenedthatIwasnotth

7、erethatday.Itsuddenlyoccurredtohimthatthekeysmightbeleftinthecar.4）It+be+動(dòng)詞的過(guò)去分詞+that從句accepted,admitted,announced,arranged,believed,decided,demanded,estimated,expected,found,hoped,known,noted,pointedout,proved,reported,rumo