高中英语人教版必修3课件：《Unit 4 Astronomy the science of the stars》period 2

Astronomy:thescienceofthestarsPeriodtwo,LearningaboutlanguageWarmingUp,Preparefor“DISCOVERINGUSEFULWORDSANDEXPRESSIONS”.P.28Answerkeyforexercise1:-enceun-presentcertainviolentfairconfidentpaiddifferentlikepatientkindpresenceviolenceconfidencedifferencepatienceuncertainunfairunpaidunlikeunkind,-al-istcultureartglobephysicsuniversechemistryagriculturebiologymathematicsscienceculturalglobaluniversalagriculturalmathematicalartistphysicistchemistbiologistscientist,CACBAnswerkeyforexercise2:Answerkeyforexercise3:fundamental,astronomy,gavebirthto,existed,Asaresult,atoms,prevent…from,puzzle,emotionalwordscalmwordsAnswerkeyforexercise4:violentangryrudeshockedexcitedcrazypatientgentlerelaxingkindeasy-goingcalm,Presentation,主语从句（NounClausesastheSubject）定义：用作主语的从句叫主语从句，它是名词性从句之一。引导主语从句的连接词有：连词that,whether；连接代词who,what和which；连接副词when,where,how和why。,用法：1)由what等代词引起的主语从句：Whattheteachersaidtodaywasquiteright.老师今天说的话是十分正确的。,2)由连词that引起的主语从句：Thattheyarebadlyinneedofhelpisquiteclear.他们急需帮助，这是十分明显的。但是这类句子在大多数情况下会放到整个句子的后部去，而用代词it作形式主语。,3)由连接代词或连接副词以及whether引起的主语从句。Whethertheywillsellthehouseisnotyetdecided.他们是否卖掉这所房子还没有决定。,4)whatever,whoever也可引导主语从句。Whateverwassaidheremustbekeptsecret.这里说的话都应当保密。Whoevermakesmistakesmustcorrectthem.凡犯了错误的人都必须改正。,注意:上述例句中的主语从句都是放在句首,但有时为了使句子结构平衡,避免“头重脚轻”,常用it作形式主语,而把从句放在后面。例如:Itisapitythatshehasmadesuchamistake.她犯了这样一个错误,真是遗憾。,这样就构成了下面一些常用句型:1)Itis+adj./n.+从句Itisapity/shamethat...遗憾的是……Itispossiblethat...很可能……Itisunlikelythat...不可能……2)It+不及物动词+从句Itseems/appearsthat...似乎……Ithappenedthat...碰巧……,3)It+be+过去分词+从句Itissaidthat...据说……Itisknowntoallthat...众所周知……Itisreportedthat...据报道……Itisbelievedthat...据信……;人们相信……Itissuggestedthat...有人建议……,Itmustbepointedoutthat...必须指出……Ithasbeenprovedthat...已证明…….如:Itisbelievedthatatleastascoreofbuildingsweredamagedordestroyed.据信,至少有二十座楼房遭到破坏或彻底毁掉。,5).用于Itisimportant/natural/necessary/impossiblethat...句型中,主语从句应使用虚拟语气,谓语动词用\“should+动词原形\”的形式,should有时有感情色彩。,Exercises,1._____youdon’tlikehimisnoneofmybusiness.2._____hesaidatthemeetingastonishedeverybodypresent.3.________the2000OlympicGameswillbeheldinBeijingisnotknownyet.4.________we’llgocampingtomorrowdependsontheweather.5.________leavestheroomlastoughttoturnoffthelights.ThatWhatWhetherWhetherWhoever,6.___isafactthatEnglishisbeingacceptedasaninternationallanguage.7.Itworriedherabit____herhairwasturninggrey.8.TheForeignMinistersaid,“__isourhopethatthetwosideswillworktowardspeace.”9.AfterYangLiweisucceededincirclingtheearth,____ourastronautsdesiretodoiswalkinspace.ItthatItwhat,1.AfterYangLiweisucceededincirclingtheearth,___ourastronautsdesiretodoiswalkinspace.(高考真题)A.whereB.whatC.thatD.how解析:what引导主语从句,在从句中做do的宾语高考链接,2.Theotherday,mybrotherdrovehiscardownthestreetat__Ithoughtwasadangerousspeed.(高考真题)A.asB.whichC.whatD.that解析:Ithought是插入语,可以把它去掉不考虑.what引导宾语从句,在从句中作主语.宾语从句作at的宾语.,3.___intheregulationsthatyoushouldnottellotherpeoplethepasswordofyouremailaccount.（高考真题）A.WhatisrequiredB.WhatrequiresC.ItisrequiredD.Itrequires解析:“Itisrequiredthat…”是一个固定句式，it作形式主语,that引导的从句为真正的主语。,4.___the2000OlympicGameswillbeheldinBeijingisnotknownyet.[高考真题]A.WheneverB.IfC.WhetherD.That答案是C。“2000年奥林匹克运动会是否在北京举行还不知道。”,5.___hesaidatthemeetingastonishedeverybodypresent.[高考真题]A.WhatB.ThatC.ThefactD.Thematter答案是C。“他在会上的发言使到会的每一个人都感到惊讶。”what表示“(所说的话)”,相当于Thewords(that+/which)hesaidatthemeeting…,6.___leavestheroomlastoughttoturnoffthelight.[高考真题]A.AnyoneB.ThepersonC.WhoeverD.Who答案是C。“谁最后离开房间应关灯。”whoever意为“无论谁”,引导主语从句,并在从句中作主语。若选A或B,anyone或theperson后应回who,使其成为由who引导的定语从句,修饰anyone或person.注：这些词还可引导副词性从句。,7.___hehasbecomearichmanisknowntoallinourtown.[高考真题]A.BecauseB.ThatC./D.What答案是B。“他变成了富翁,这是我们镇上下班人人皆知的事。”根据句意,须用that引导的主语从句。that在从句中不担任任何成分,只起连接作用.,8.___Ineedismoretime.A.ThatB.WhatC./D.Which答案是B。“我所需要的是更多的时间。”根据题意,应选what引志的主语从句,what在职从句中作宾语(what=thethingwhich).主语从句的关联词不能省略,故排除C。which表示“哪一个”,that无词义,都与句意不符,故排除。,Conclusion,Homework1.Makeuseofdifferentlearningresourcestohaveaninquirystudyofsubjectclause,andsummarizetherulesofit.2.DoWorkbookExx.1-3onP.64.