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1、名词性从句(wh-引导的名词性从句)Teachingaims:Reviewtheusuageofnounclauses.Teachingimportantpoints;MastertheusageofnounclausesintroducedbyquestionwordsTeachingdifficultpoints:HelpthestudentsmastertheusageofthegammarrTeachingprocedures:概说:在句子中起名词作用的句子叫名词性从句。名词从句的功能相当于名词词组,它在复合句中能担任主语、宾语、表语、同位语等,因此根据它在句中不同的语法
2、功能,名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。引导名词性从句的连接词引导名词性从句的连接词可分为三类:连接词:that,whether,if(不充当从句的任何成分)连接代词:what,whatever,who,whoever,whom,whose,which连接副词:when,where,how,why以及由how构成的词组如howmany,howmuch,howsoon,howoften,howfar,howlong,howtall,howhigh等.1.if,whether引导的名词性从句,“是否”引导主语,宾语,表语从句Whethertheplanis
3、doableremainstobeproved.这一计划是否可行还有等证实。Letusknowwhether/ifyoucanfinishthearticlebeforeFriday.请让我们知道你是否能在星期五以前把文章写完。She'sdoubtfulwhetherweshallbeabletocome.她怀疑我们是否能够前来。Iworryaboutwhetherhecanpassthroughthecrisisofhisillness.我担心他是否能度过疾病的危险期。Thepointiswhetherweshouldlendhimthemoney.问题在于我们是否应该借钱给他
4、。Theyarelookingintothequestionwhetherthemanistrustworthy. 他们调查他是否值得信赖。在下列几种情况下,要使用whether。⑴引导主语从句时。Whetheryou’llgainknowledgesuccessfullyornotdependsonhowhardyouwillwork.你能否真正学到知识,就看你努力的程度如何。但当采用形式主语It将主语从句后置时,用Whether和if均可,如:It’snotcleartomewhether/ifshelikesthepresent.⑵引导表语从句时。Thequestionis
5、whetheritisworthdoing.问题是这事能否值得一做。⑶引导同位语从句时。在problem,question,doubt等名词后接的同位语从句,用whether引导,在fact,news,idea,promise,hope等名词后用that引导。Thereisstillsomedoubtwhetherhewillsucceed.他能否成功,人们对此仍感到怀疑。Thereisnodoubt后接的同位语从句,用that引导。Thereisnodoubtthathewillsucceed.毫无疑问,他会成功。⑷介词后接的宾语从句中。Italldependsonwhethe
6、rtheweatherlooksgood.⑵宾语从句用it替代,移至句子后部时。Iputittoyouwhetherthat’sthebestsolutiontotheproblem.我提供让你考虑,这究竟是不是解决问题的最佳办法。⑹在动词discuss,care后。Wediscussedwhetherweshouldshutdownsomesmallcoalmines.是否关闭这些小煤矿,我们曾经讨论过。Idon’tcarewhetherahuntingdogsmellsbadlyornot,butIdon’treallywantittosmellbad.我不在乎猎狗的嗅觉如何
7、,但真不想让它身上有臭味。2,what“什么“”什么东西”Whatever“任何。。东西”引导主语,宾语,表语从句在从句中充当主语,宾语,表语Inone'sownhomeonecandowhatonelikes. 在自己家里可以随心所欲。Shewillnamehimwhatevershewantsto.她高兴给他起什么名字就取什么名字。Whatweneediscarefulpreparation.我们需要的是准备.Whateverhedidwasright.(whatever=t