2023學(xué)年完整公開課版必修3unit4知識點

Unit4ReadingHowlifebeganontheearth?LanguagepointsUnit41.Nooneknowsexactlyhowtheearthbegan,asithappenedsolongago.——————————————————Nooneseeswhathe’ssaying,asitistoohard.

仿寫：沒人明白他在說什么，因為那太難理解了。2.However,accordingtoawidelyacceptedtheory,theuniversebeganwitha“BigBang”thatthrewmatterinalldirections.

beginwith=startwith：“以……開始”.1)tobeginwith=tostartwith以…為起點;開始(做)這兩個詞組都可以單獨使用,表示“首先;第一;起初;最初”.在句中作時間狀語.e.g.Tobegin/startwith,Icouldn’tlikehimatall.起初,我一句也沒弄明白.3.Whatitwastobecomewasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe._________________

（使大家吃驚的是）isthathedidn’tcometothemeeting.Whatsurprisedeverybody

2.___________（他所做的addedtoourdifficulty.

Whathedid

仿寫:李老師明天將去北京，直到那時才能知道誰將代替她給我們上課。________________________________________________________________________________WhowillgiveuslessonsinplaceofMissLiisn’tknownuntiltomorrowwhenshewillgotoBeijing.4.Theearthbecameso

violent

thatitwasnotclearwhetherthesolidshapewouldlastornot.問題是地球開始變得激烈動蕩，不知道這個固體形狀是否會繼續(xù)下去。n.固體

(solid,liquid,gas)adj.固體的,實心的,無空隙的；結(jié)實的,

Solid:2)violent

猛烈的，激烈的

violencen.暴力3)lastv.持續(xù)好天氣只會持續(xù)幾天

Thefineweatheronlylastedforafewday

友誼長存

Friendshiplastsforever.

5.Itexplodedloudlywithfireandrock,whichwereintimetoproducecarbon,nitrogen,watervapourandothergases,whichwerewomaketheearth’satmosphere.1).（使某物）炸開，爆炸

2).（指感情）迸發(fā)搭配：

3).（指人口）突然或迅速增加

eg:Thefireworkexplodedinhishandandhewashurtseriously.

eg:Thechildrenexplodedintolaughter.eg:Theteacherexplodedwithanger.

explosionn.爆炸（聲）

explosiveadj.爆炸性的，易爆炸的

explodewith/in/into...eg:Nowitisnoteasytofindjobswiththeexplodingworldpopulation.(sth)beto(do):1.不可避免要發(fā)生或必須發(fā)生。Sheistobehonouredforthisgreatwork.

2表示按計劃、安排要發(fā)生的動作Whenaretheytohandintheirplan？3表命令Tellhersheisnottobebacklate!

intime:soonerorlater;eventually遲早;最終我遲早會遇見他.

I’llseehim

intime.

intime(forsth./todosth.):notlate及時；不遲

她會及時回來準(zhǔn)備晚餐.Shewillbebackintimetopreparedinner.

你認(rèn)為我們能及時趕上火車嗎?Doyouthinkwecangetthere_________thetrain?intimeforexercise:

與time相關(guān)的短語:

ontime按時;準(zhǔn)時

innotime

立刻,馬上

attimes

有時

atatime

每次;依次

onceuponatime

從前

atonetime

從前

forthetimebeing

暫時

fromtimetotime

不時地

cooldown

變涼,冷卻,平息，冷靜曬了一天的太陽之后,他喜歡在海水中涼快一下.Afteradayinthesun,helikedto________inthesea.他的話平息了她的怒氣.Hiswords_____________heranger.cooleddowncooldown6.Whatisevenmoreimportantisthatastheearthcooleddown,waterbegantoappearonitssurface.

隨著地球的冷卻,地球的表面就開始出現(xiàn)了水。7.WaterhadalsoappearedonotherplanetslikeMarsbut,unliketheearth,ithaddisappearedlater.

仿寫：他們盡了最大的努力，但讓他們失望的是他們沒有贏得那場比賽。___________________________________Theytriedtheirbestbut,totheirdisappointment,theydidn’twinthegame.8.Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothedevelopmentoflife.

水會對于生命的發(fā)展起關(guān)鍵作用,這一點在當(dāng)時并不太明顯.

本句體現(xiàn)的是名詞性從句在句中作主語的作用,雖然是以It開頭,可是It只起到形式主語的作用,真正的主語是thatwaterwastobefundamentaltothedevelopment

oflife.用It做形式主語是因為that引導(dǎo)的從句較長,如果按照正常語序來安排的話就顯得頭重腳輕了.如:Itisnowonderthathehaspassedtheexam.ItisquitenecessaryforustolearnEnglishwell.allow…to…=permit…todo…h(huán)armfuladj.Opp:harmlessharmn./v.beharmfultosb./sth.=doharmtosb./sth.=dosb/sthharm對…有害過多的二氧化碳對環(huán)境有害.Toomuchcarbondioxideisharmfulto/doesharmtotheenvironment.9.Whatmanyscientistsbelieveisthatthecontinuedpresenceofwaterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.10.Thisproducedachainreaction,whichmadeitpossibleforlifetodevelop.Chainreaction連鎖反應(yīng)Makeitpossibleforlifetodevelop.

使生命的發(fā)展成為可能

makeit+adj./n.sb./sth.todosth.

組長讓我們可以一起合作.Thegroupleader_____________________老師讓他們跟容易地明白那個問題.Theteacher_________________________________.makeitpossibleforustoworktogether.madeiteasyforthemtounderstandthequestion1)multiplyv.乘:增加,繁殖；7乘以4等于28.4multipliedby7istwenty-eight.我們的功課自上以來增多了.Ourhomeworkhavemultipliedsincewecametohighschool.蚊子在夏天繁殖得很快.Mosquitoesmultiplyrapidlyinsummer.

11.Theymultipliedandfilledtheoceansandseaswithoxygen,whichencouraged…=4and7multiplytomake28.

=Multiply7by4tomake28.

allsortsof=allkindsof

各種各樣的12.…whichencouragedthelaterdevelopmentofearlyshellfishandallsortsoffish.13.Others,calledamphibians,wereabletoliveonlandaswellasinthewater.

另外一些叫作兩棲動物,它們既能在陸地上生活也能在水里生存.

aswellas

表示“(除….之外)也;既……又”.如:I’mlearningFrenchaswellasEnglish.我學(xué)英語之外還學(xué)法語.Hegrowsflowersaswellasvegetables.他既種菜也種花.“就遠(yuǎn)原則”：HeaswellasI______rockmusic.likes14.Theyproducedyounggenerallybylayingeggs.

It’sgenerallybelievedthat…一般認(rèn)為…

generallyspeaking

一般而言，概括來說

1)It’sgenerallybelievedthatgirlsworkharderthanboysdo.

2)Generallyspeaking,womencrymoreeasilythanmen.

15.Theyproducedyounggenerallybylaying

eggs.它們一般是通過孵蛋而繁衍后代的.lie,lie,lay的區(qū)別如下:動詞原形第三人稱單數(shù)過去式過去分詞現(xiàn)在分詞中文釋義lieliesliedliedlying撒謊;謊話lielieslaylainlying躺;位于laylayslaidlaidlaying放置;下蛋16.Theylaideggstooandexistedontheearthformorethan140millionyears.

existin存在與…之中

existon靠…為生

existby靠…生存

Itwasimpossibleforthemto________suchasmallincome.

Theuniverse_________space.

existonexistsinThewildman__________huntingwildanimalintheforest.existedbyinexistence

現(xiàn)存的comeintoexistence=comeintobeing

開始存在、成立Whendidthisworldcomeintoexistence?17.Theseanimalsweredifferentfromalllifeformsinthepast,becausetheygavebirthtoyoungbabyanimalsandproducemilktofeedthem.

givebirthto

1)生（孩子）

She’sjustgivenbirthtoahealthybabygirl.

她剛剛生了個健康的女嬰。

2)產(chǎn)生

Theextraordinaryexperiencegavebirthtohislatestnovel.

這段奇特的經(jīng)歷促成了他的最新的一部小說的誕生。（1）vi.（消息等）傳開，流傳。如：Thenewsspreadthroughtheschoolveryquickly.Thefirespreadfromthefactorytothehousenearby.（2）vt.“使伸展，延伸，張開”，常與out連用。Hespreadouthisarmstowelcomeus.Ispreadanewclothonthetable.我在餐桌上鋪上一條新桌布。他張開手臂歡迎我們。18.smallcleveranimals,nowwithhandsandfeet,appearedandspreadallovertheearth.19.Thustheyhave,intheirturn,becomethemostimportantanimalsontheplanetsontheplanet.thusadv.因此；從而

Shestudiedhard,____________________.thusshegothighmarksHeforgottoturnontheradioand________________________.thusmissedtheprogram

2)Inone’sturn輪到某人Itwillbe_______________tobeondutytomorrow.inSam'sturn20.Theyareputtingtoomuchcarbondioxideintotheatmosphere,whichprevents