广东省中山市高中英语 Unit 4 Astronomy the science of the stars（6）课件 新人教版必修3.pptVIP

nounclausesasthesubject unit4grammar 主语从句 quiz课前小测 1 watchwaslostisunknown 2 youdidisright 3 wewillgoforanoutingtomorrowremainsunknown 4 weneedistime 5 willbeourmonitorhasn tbeendecidedyet whetherwhatwhowhosewhatever usethewordsbelowtofillintheblanks whether what whatever whose who 上面的空大家都填对了吗 上面每个句子的主语 大家能找到吗 同时思考这些主语有什么特别之处 1 whosewatchwaslostisunknown 2 whateveryoudidisright 3 whetherwewillgoforanoutingtomorrowremainsunknown 4 whatweneedistime 5 whowillbeourmonitorhasn tbeendecidedyet findoutthesubject主语在哪里 1 theskyinthecountrysideseemsquiteblue 2 flyinginmyownhouseismydream 3 toapologizetohisparentswasaterriblethingforhim 4 whatihavegotisallhere 1 thesky名词做主语inthecountryside状seemsquiteblue 2 flyinginmyownhouse分词做主语ismydream 3 toapologizetohisparents不定式作主语wasaterriblethingforhim 4 whatihavegot句子作主语isallhere 总结 句子中的主语除了名词 代词 还包括不定式 分词甚至句子都可以充当 是句子必有主谓有主谓必成句子 主语从句 subjectclause 如果一个句子在复合句中充当一个主语 那么这个句子就是主语从句 thathefinishedwritingthecompositioninsuchashorttimesurprisedusall whatweneedaregooddoctors whomwemuststudyforisaquestionofgreatimportance 连接词 连词不充当句子成分只起连接作用不可省略 thatthattheearthmovesaroundthesuniswellknown whether 是否 whetherhewillcomeornotisnotknownyet whatwhatyouneedismorepractice whichwhichoneisthebestisnotclear 连接词 代词充当句子基本成分且有实际意义不可省略 whowhowillgomakesnodifference whoeverwhateverwhichever when wherewherehehasgoneisaquestion whentheshowwillbeonisn tknown why howwhythereisgravityishardtounderstand howhecanearnalivinginbritainremainsabigproblem 连接词 副词充当句子状语成分有实际意义不可省略 8 whoever whatever whichever可引导主语从句 whoevercomeswillbewelcome whateverhedidwasright whicheverofyoucomesinwillreceiveaprize 引导主语从句连词有that whether who what whatever等 2 连词位于句首不能省略 3 主语从句大多数情况下视为第三人称单数 但在关系代词what引导的主语从句后谓语动词的数要根据句意而定 小结 为了防止句子头重脚轻 通常把形式主语it放在主语位置 真正主语后置 1 itiscertainthathewillwinthematch 2 itistruethathehasmadeaveryimportantdiscoveryinchemistry 3 itisverylikelythattheywillholdameeting 以that引出的主语从句 常以形式主语it引导 结构为 itis 形容词 名词 某些动词ed that从句 2 在有些that从句中要用虚拟语气 should do should havedone 延伸与了解 whether与if均为 是否 但下列情况下只用whether 1 引导主语从句并在句首whetherhewillcomeisnotclear 2 引导表语从句thequestioniswhetherhe llcome 3 whether从句作介词宾语i mnotsureaboutwhetherwe llwin 4 引导让步状语从句时whetheryoulikeitornot you llhavetodoit 1 主语从句位于句首时必须由连接词引导 2 主语从句后置时引导词that可省略 3 主语从句位于句首时 不能用if引导 4 主语从句后置时 可以用if引导 注意事项 whatitwastobecomewasuncertainuntilbetween4 5and3 8billionyearsagowhenthedustsettledintoasolidglobe itwasnotimmediatelyobviousthatwaterwasfundamentaltothedevelopmentoflife howtheysuddenlydisappearedstillremainsamystery whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved findoutthesubjectinthefollowingsentences whatitwastobecomewasuncertainuntilbetween4 5and3 8billionyearsagowhenthedustsettledintoasolidglobe itwasnotimmediatelyobviousthatwaterwasfundamentaltothedevelopmentoflife howtheysuddenlydisappearedstillremainsamystery whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved findoutthesubjectinthefollowingsentences 1 makesthisshopdifferentisthatitoffersmorepersonalservices a whatb whoc whateverd whoever 练习 2 thesewildflowersaresospecialiwoulddo icantosavethem a whateverb thatc whichd whichever 3 intheregulationsthatyoushouldnottellpeoplethepassportofyoure mailaccount a whatitrequiredb whatrequiresc itisrequiredd itrequires 4 itisprettywellunderstood controlstheflowofcarbondioxideinandoutoftheatmospheretoday a thatb whenc whatd how 5 madetheschoolproudwas morethan90 ofthestudentshadbeenadmittedtokeyuniversities a what becauseb what thatc that whatd that because 6 itnowappears theyareinneedofhelp a thatb whichc whatd how 7 knowsthetruthwilltellyouaboutit a whothatb whoeverc whomthatd thatwho 8 itisgoodnews theywillarriveinafewdays a whichb whatc thatd how translation 他出生在何地还不知道 2 谁会赢得比赛还不知道 3 谁来都欢迎 4 那个人为什么被谋杀尚不知道 wherehewasbornhasnotbe