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1.Nooneknowsexactlyhowtheearthbegan,asithappenedsolongago.Nooneknowswhathewassaying,asitwastoohard.仿写：没人明白他在说什么，因为那太难理解了。as在这里表示原因,意思是“因为”Ashewasill,heneededmorehelp.2.However,accordingtoawidelyacceptedtheory,theuniversebeganwitha“BigBang”thatthrewmatterinalldirections.1)widelyaccepted被广泛接受的2)beginwith=startwith：“以……开始”.Theclassbeginswithaninterestingstory.tobeginwith=tostartwith“首先;最初”，在句中作时间状语.e.g.Tobegin/startwith,tokeephealthyweneedabalanceddiet.=Firstlyinalldirections朝四面八方译：Theenemiesranawayinalldirections.敌人四处逃窜。directionn.方向，指示拓展：①I’mterriblewithdirections.②asenseofdirection.③在某人的指导下______one’sdirection方向感under3.Whatitwastobecomewasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.地球将成为什么样子一直是个谜，直到45~38亿年以前这些尘埃凝聚成一个固体球体。4.Whatitwastobecomewasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.Whatisevenmoreimportantisthatastheearthcooleddown,waterbegantoappearonitssurface.[考点]what引导的主语从句，第一句what在从句中作become的宾语，第二句what在从句中作主语。[考例1]_____wasmostimportanttoher,shetoldme,washerfamily.（山东2008）A.ItB.ThisC.WhatD.As[点拨]选C。[考例2]______isknowntousallisthatthe2008OlympicGameswilltakeplaceinBeijing.（福建2008）A.ItB.WhatC.AsD.Which[点拨]what引导主语从句并且在从句中作sayanddo的宾语。1.______________________（使大家吃惊的是）isthathedidn’tcometothemeeting.Whatsurprisedeverybody2.___________（他所做的）addedtoourdifficulty.Whathedid仿写:李老师明天将去北京，直到那时才能知道谁将代替她给我们上课。___________________________________________________________________________WhowillgiveuslessonsinplaceofMissLiisn’tknownuntiltomorrowwhenshewillgotoBeijing.5.Theearthbecamesoviolentthatitwasnotclearwhetherthesolidshapewouldlastornot.地球开始变得激烈动荡，不知道这个固体形状是否会继续下去。lastvi.持续好天气只持续了几天。Thefineweatheronlylastedforafewdays.友谊长存Friendshiplastsforever.•引导宾语从句既可以用whether,也可以用if,两者常可以互换。Heaskedmewhether/ifIcouldlendhimmybike.Couldyoutelluswhether/ifitsnowsinwinterinAustralia?①whether和if都可以和ornot连用,但是whether之后可以直接跟ornot,而if则不能②whether可以引导从句作介词的宾语,而if则不能③whether可以直接跟动词不定式连用,而if则不能④在个别动词之后,如discuss等,只跟用whether引导的宾语从句•引导主语从句(包括从句在句首的位置)应当用whether,不用if,如：Whetheritistrueremainsaproblem.Whetherhewillcome,Iamnotsure.•引导表语从句用whether,不用if,如:Thequestioniswhetheryoushouldacceptit.Thequestioniswhetherhewillspeakatthemeeting.•引导同位语从句用whether,不用if,如:Thequestionwhetherhe’llattendthemeetingisessential.IamindoubtwhetherIshouldagreetotheplan.【模拟翻译】不知道她是否能成功地通过驾驶考试。It’snotclearwhethershewillpassthedrivingtest.1.(08石家庄市高中毕业班复习教学质量检测)Weallknowtherearealotoftroublesinourlives，butasuccessfullifedependsontheycontrolusorwecontrolthem.A.thatB.whetherC.howD.which2.(05天津2)Elephantshavetheirownwaytotelltheshapeofanobjectanditisroughorsmooth.A./B.whetherC.howD.what3.(09浙江12)－Isthereanypossibility______youcouldpickmeupattheairport?－Noproblem.A.WhenB.thatC.whetherD.what高考链接BBB7.Itexplodedloudlywithfireandrock.【探究】①ThebombexplodedinIraqlastnight.②Thechildrenexplodedinto/withlaughter.③Thecity'spopulationhasexplodedinthelastfewyears.【拓展】adj.explosive爆炸性的n.explosion爆炸•Unemploymentbecamean_________issue(一个爆炸性问题).•thetheoryofpopulation__________:人口大爆炸理论v.爆炸，炸开v.（指感情）迸发(=burstinto…)v.（指人口）突然或迅速增加explosiveexplosion8.Theywereintimetoproducecarbon,nitrogen,watervapourandothergases,whichweretomaketheearth’satmosphere.intime:①最终/迟早(=finally/soonerorlater)译:我迟早会回来的.I’llcomebackintime.②及时；不迟(=notlate)A.她会及时回来准备晚餐.Shewillbeback______________preparedinner.B.你认为我们能及时赶上火车吗?Doyouthinkwecangetthere__________thetrain?intimetointimefor拓展：与time相关的短语:ontime__________attimes__________innotime___________onceuponatime__________killtime______________fromtimetotimeaheadoftimetakeone’stime准时有时;偶尔立刻；马上从前消磨时间不时地提前别着急；慢慢来1.________，IlostheartinEnglishlearning，butmyteacheroftensaidtome，“Keeponstudyinghard,andyou’llsucceed________.”A．Atatime；intimeB．Atatime；ontimeC．Atonetime；intimeD．Atonetime；ontimeC2．(2009年江西景德镇模拟)—Doesheoftenaskyouforhelp?—Oh，no，only________.A．allthetimeB．atonetimeC．atatimeD．attimesD3．—IamafraidIcan’treturnthebooktoyoubeforeFriday.—________.A．Don’tbeafraidB．BecarefulC．NotatallD．TakeyourtimeD(L.13)…whichweretomaketheearth’satmosphere.①大气层②会谈在友好的气氛下进行。Thetalkwasconductedinafriendlyatmosphere.9.…astheearthcooleddown,waterbegantoappearonitssurface.随着地球的冷却,地球的表面就开始出现了水。1)cooldown变凉,冷却,平息,冷静晒了一天的太阳之后,他喜欢在海水中凉快一下。Afteradayinthesun,helikedto__________inthesea.他的话平息了她的怒气。Hiswords_____________heranger.cooldowncooleddownappear“出现,似乎”，不及物动词“似乎,好像”系动词,该词无被动语态。OurteacherappearedonTVthismorning.10.WaterhadalsoappearedonotherplanetslikeMarsbut,unliketheearth,ithaddisappearedlater.unlikeprep.dislikev.likelyadj.unlikelyadj.11.Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothedevelopmentoflife.水会对于生命的发展起关键作用,这一点在当时并不太明显。fundamentaladj.基础的，基本的12.Thecontinuedpresenceofwaterallowedtheearthtodissolveharmfulgasesandacidsintooceansandseas.•harmfuladj.___________•beharmfulto…对…有害e.g.Smokingisharmfultoyourhealth.=Smoking_____________yourhealth.【拓展】①harmless__________联想：useless,helpless,homeless,…②Thereisnoharminreadingmorebooks.Thereisnoharmindoingsth.做某事没有坏处有害的无害的doesharmto=doharmtoTheharmthemodernfarmingmethodshavedone