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1、人教課標(biāo)高二選修8Unit2Unit2CloningLookatthesentences.Thephraseandclauseunderlinedareusedasappositive(同位語).1.AlthoughDollylivedsixandahalfyears,halfthelengthofthelifeoftheoriginalsheep.2.Thefactthatsheseemedtodevelopnormallywasveryencouraging.Discoveringusefulst
2、ructures1.同位語theAppositive同位語是句子成分的一種,它位于名詞、代詞后面,說明它們的性質(zhì)和情況,它可以由名詞、代詞、名詞性短語或從句充當(dāng)。語法精解(一)同位語的表現(xiàn)形式有以下幾種：(1)名詞Tom,ourmonitor,isahandsomeboy.(2)代詞Imyselfwilldotheexperiment.(3)數(shù)詞Sheistheoldestamongthemsix.(4)從句Hetoldmethenewsthattheplanehadexploded.他告訴我飛機(jī)爆炸
3、的消息。(5)由suchas,thatis引導(dǎo)Somesubjects,suchasmathsandphysics,areverydifficulttolearn.某些學(xué)科,例如數(shù)學(xué)和物理,是很難學(xué)的。(6)由of引導(dǎo)ThecityofBeijinghasbeengreatlychangedsince2000.自從2000年以來,北京市發(fā)生了很大的變化。(7)由or引導(dǎo)Thefreezingtemperature,orfreezingpoint,isthetemperatureatwhichwater
4、freezesunderordinarypressure.結(jié)冰溫度即冰點,是水在常壓下結(jié)冰時的溫度。1.Thereisclearevidence_____themostdifficultfeelingofalltointerpretisbodilypain.（上海2011）A.whatB.ifC.howD.that考例回顧[點撥]答案為D。that引導(dǎo)同位語從句，說明evidence的具體內(nèi)容。2.Whenthenewscame_____thewarbrokeout,hedecidedtoservei
5、nthearmy.（遼寧2011）A.sinceB.whichC.thatD.because[點撥]答案為C。news與同位語從句分隔開，that引導(dǎo)的同位語從句說明news的具體內(nèi)容。3.—Isthereanypossibility_____youcouldpickmeupattheairport?—Noproblem.（浙江2009）A.whenB.thatC.whetherD.what[點撥]答案為B。that引導(dǎo)同位語從句，說明possibility的具體內(nèi)容。4.Weshouldconsid
6、erthestudents’request_____theschoollibraryprovidemorebooksonpopularscience.（重慶2009）A.thatB.whenC.whichD.where[點撥]答案為A。that引導(dǎo)同位語從句，說明request的具體內(nèi)容，從句的謂語用虛擬語氣。2.同位語從句theAppositiveclause(1)同位語從句的定義在復(fù)合句中用作同位語的從句稱為同位語從句。同位語從句是名詞性從句的一種。它在句中起同位語的作用。語法精解(二)它一般放在
7、fact,news,idea,truth,hope,problem,information,belief,thought,doubt,promise,question等名詞的后面,對前面的名詞作進(jìn)一步的解釋,說明前面名詞的具體含義。引導(dǎo)同位語從句的詞有連詞that,連接副詞how,when,where,whether,what等。e.g.Thehopethathemayrecoverisnotgoneyet.Theproblemwhetherweshouldcontinuetodotheexperim
8、enthasbeensolved.Ihavenoideawhenhewillcomeback.同位語從句有時被別的詞把它和名詞隔開：注意:ThestorygoesthatWilliamTellkilledthekingwithanarrow.Wordcamethattheirteamhadwon.(2)同位語從句的表現(xiàn)形式:①由that引導(dǎo)Thefactthatyoudon’thaveenoughtimetodotheworkissimplyunbeli
