Book3unit4languagepoints

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1、Book-3-unit-4-Book-3-unit-4-language-pointslanguage-points1.theory2.atom3.billion4.globe5.violent6.intime7.carbondioxide8.atmosphere9.unlike10.fundamentaln.学学说说；理；理论论n.原子原子n.万万亿亿；十十亿亿n.球体；地球球体；地球仪仪；地球；地球adj.猛烈的；激烈的；猛烈的；激烈的；强强暴的暴的及及时时，终终于于n.二氧化碳二氧化碳n.大气大气层层；气氛；气氛prep.与与不同；不像不同；不像adj.基本的；基基本的；基础础的的New

2、Wordsandphrases11.harmful12.acid13.chain14.mutiply15.oxygen16.layeggs17.exist18.givebirthto19.thus20.inonesturn21.preventfromadj.有害的有害的n.酸酸n.链链子；子；连锁连锁；锁链锁链vt.乘；增加乘；增加n.氧气氧气下蛋下蛋vi.存在；生存存在；生存产产生；分娩生；分娩adv.因此；于是因此；于是轮轮到某人到某人阻止；制止阻止；制止as在这里表示原因在这里表示原因,意思是意思是“因为因为”Ashewasill,heneededmorehelp.1.Nooneknow

3、sexactlyhowtheearthbegan,asithappenedsolongago.没人明白他在说什么，因为那太难理解了。没人明白他在说什么，因为那太难理解了。Nooneseeswhathessaying,asitistoohard.核心词汇梳理核心词汇梳理2unlikeprep.与与不同；不像；非不同；不像；非的特征的特征归纳归纳(1)beunlike.相当于相当于bedifferentfrom.(2)unlikesth./sb.位于句首，常用于表示对比。位于句首，常用于表示对比。(3)unlike的反义词为的反义词为like。3.harmful adj.有害的，伤害的有害的，伤害

4、的 搭配搭配 熟记下列搭配熟记下列搭配 be harmful to=do harm to 对对有害有害 do harm to sb.do sb.harm对某人有害处对某人有害处 do more harm than good弊多利少弊多利少 翻译：吸烟有害健康翻译：吸烟有害健康。_Smokingisharmfultohealth.4exist vi.存在；生存存在；生存 联想联想 exist in 存在于存在于中中 exist on 靠靠生活生活生存生存there exist(s)表示表示“存在存在/有有”，此时，此时exist不用进行时。不用进行时。拓展拓展 there exist(s)表示表

5、示“存在存在/有有”，是，是“there be”句型的延伸句型的延伸完成句子(1)少数人认为世界上存在恶魔。Several people believe the devil _ in the world.(2)好人到处都有。_ warmhearted persons everywhere.(3)It was impossible for them to _such a small income.(4)The universe _space.exist onexists inThereexistexists1.However，according to a widely acceptedtheor

6、y，the universe began with a“Big Bang”thatthrewmatterinalldirections.自我探究自我探究inalldirectionsineverydirection朝四面八方。朝四面八方。品味经典品味经典When the police arrived，the crowd ranaway_.警察一到警察一到,人群就向四面八方跑开了。人群就向四面八方跑开了。inalldirections重点短语例释重点短语例释归纳拓展(1)direction n方向；指导；(通常作复数)指示，命令，说明书(2)a sense of direction方向感 in/

7、from the direction of.朝着/来自方向under the direction of sb.under ones direction 在某人的指导下他的方向感很好。He has a good sense of direction.2in time 及时；早晚；迟早及时；早晚；迟早完成句子完成句子:(1)我们到达车站时，刚好赶上那班车。我们到达车站时，刚好赶上那班车。We got to the station just _ to catch the bus.(2)他早晚会明白什么才是对的。他早晚会明白什么才是对的。_ he will see what is right.inti

8、meIntime提示提示 intimetodosth./forsth.来得及干某事；正好及时赶上来得及干某事；正好及时赶上(3)我刚好来得及赶上那班飞机。我刚好来得及赶上那班飞机。Iwasjust_theflight.(4)大夫正好及时赶到挽救了他的生命。大夫正好及时赶到挽救了他的生命。Thedoctorgottherejust_hislife.intimeforintimetosaveTheyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfromescapingfromtheearthintospace.阻止

9、某人做某事阻止某人做某事preventsb.(from)doingsth.stopsb.(from)doingsth.keepsb.fromdoingsth.3.preventfrom阻止；制止阻止；制止Itriedtokeephimfromwaitingforher.我试图叫他不要再等她了。我试图叫他不要再等她了。(keepfrom)Itriedtokeephimwaitingforher.我试图让他等她。我试图让他等她。(keepsb.doingsth.)1).Noonecanpreventtheplans_out.A.tobecarriedB.fromcarryingC.nottocar

10、ryD.frombeingcarried2).Theytriedtopreventthethieffrom_.A.runawayB.runningawayC.torunawayD.beingrunaway及时练：及时练：Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothedevelopmentoflife.(P26，L20)翻译翻译1.新鲜空气对于身体健康必不可少。新鲜空气对于身体健康必不可少。(befundamentalto.)(Freshair)2.勤勉对成功来说是基本的。勤勉对成功来说是基本的。(Diligent)Fresh

11、airisfundamentaltogoodhealth.4.befundamentalto是是的基础；对的基础；对是必要的是必要的Diligenceisfundamentaltosuccess.5.millions of years to come will depend on whether 1)depend on sb.依靠依靠,相信某人相信某人2)depend on sth.取决与某物取决与某物我们都靠你来做决定了我们都靠你来做决定了Well all _to make a decision.明天是否能开校运会取决与天气明天是否能开校运会取决与天气Whether to hold the

12、sports meeting or not will _.3)That/It(all)depends.那得看情况而定那得看情况而定depend on youdepends on the weather他可能会支持我，但要视情况而定。他可能会支持我，但要视情况而定。e.g.:Hemaysupportme,butitdepends.1Im in a _(迷惑)as to how to cope with the new situation.2He would never be _(有害的)to anyone.3One _(理论)about the moon is that it is a piec

13、e broken off the earth.4Students should pay special attention to _(基础)science.5If you m five by six，youll get thirty.6In this v conflict，about 20 common people died.7Man cant live without water and o .puzzleharmfultheoryfundamentalultiplyiolentxygenunlike;dependon;beharmfulto;bedifferentfrom;givebir

14、th;violent;intime 1.Whattheysayisoften_whattheydo.2._manyothertopics,fatisalwaysatopicthatAmericanstalkabout.3.Hefoundajoblastmonthanddidnthaveto_hisparentsanylonger.differentfrom Unlike dependonCompletethesentenceswithawordoraphrasefromthebox.4.InChinawomenhavethefreedomtochoosenotto_.5.The_earthqu

15、akeleft3,000peoplehomeless.6.Dontbeafraidofmakingmistakes.Butit_letthemremainuncorrected.7.Ifyouputyourheartintoyourwork,youcansucceed_.violentintime isharmfulto givebirthunlike;dependon;beharmfulto;differentfrom;givebirth;violent;intime 1.What it was to become was uncertain until between 4.5 and 3.

16、8 billion years ago when the dust settled into a solid globe.1)be to do sth.表示按计划或安排要做的事或者命表示按计划或安排要做的事或者命运（即命中注定要发生的事运（即命中注定要发生的事)。e.g.When are you to leave for home?你什么时候回家？你什么时候回家？e.g.:ThecollegeentranceexaminationistobeheldinJune7,8,9.高考将在高考将在6月月7、8、9号举行号举行.主语从句主语从句定语从句定语从句它（地球）将成为什么样子一直是个谜，直到它（

17、地球）将成为什么样子一直是个谜，直到45-3845-38亿年亿年以前这些尘埃凝聚成一个固体球体。以前这些尘埃凝聚成一个固体球体。重点例句分析重点例句分析2)not until直到才;直到之前(还不)e.g.Dont talk until the class is cover.等到下课再讲话。2.The earth became so violent that it was not clear whether the shape would last or not.地球（开始）变得激烈动荡，不知道这个形状是否会地球（开始）变得激烈动荡，不知道这个形状是否会继续存在下去。继续存在下去。it it

18、形式主语形式主语1）真正的主语是主语从句）真正的主语是主语从句whether the shape would last or not。为了避免主语显得过长为了避免主语显得过长,可以可以用用it作为句子的主语作为句子的主语,把主语从句移到句子的末尾。把主语从句移到句子的末尾。e.g.It is well-known that we are good at English.众所周知，我们擅长英语。众所周知，我们擅长英语。2)2)whether可以引导主语从句、表语从句、宾语从句和可以引导主语从句、表语从句、宾语从句和同位语从句同位语从句;而而if只能引导宾语从句。引导宾语从句既可以只能引导宾语从句

19、。引导宾语从句既可以用用whether,也可以用也可以用if。Couldyoutelluswhether/ifitsnowsinwinterinAustralia?Practice I.用所给动词的适当形式填空。用所给动词的适当形式填空。make,watch,wonder,be,cool,multiply,begin,exist,explodeWheredowecomefrom?Howdidtheuniverse_?Whenwe_thestarsthroughthetelescope,we_whytheuniverse_.Afterthe“BigBang”,theearth_justaclou

20、dofenergeticdust.beginwatchwonderexistswasSomehow it _ loudly with fire and Rock,which _ the earths atmosphere.As the earth _ down,water _ to appear on its surface,which was important for the beginning of life.Then living things _ on the earth.madecooledbeganmultipliedexplodedHomework1.Recitenewwordsinthisunit2.26thEnglishWeeklyPage4partone结束结束