人教英語必修三上篇

人教英語必修三上篇第1頁/共24頁第2頁/共24頁Howlifebeganontheearth?acloudofdust1.“Bigbang”2.aviolentsolidglobeproducegases3.atmospere4.waterappeared第3頁/共24頁5.plantsappeared6.animalsappearedproduceoxygen第4頁/共24頁1.Theywereintimetoproducecarbon,nitrogen,watervapourandothergases,whichweretomaketheearth'satmosphere.最終產(chǎn)生了碳、氮?dú)?、水蒸氣和其他多種氣體，從而形成了地球的大氣層。(1)intime①最終，遲早=finally/eventually例:Ifyoukeepon,you'llsucceedintime.②及時(shí)Wewerejustintimeforthebus.WordandPhrase第5頁/共24頁

ontime準(zhǔn)時(shí)例：CanwearriveinBeijingontimeornot?

innotime立刻例：We'lldoupyourcarinnotimeatall.

atnotime決不=never例：(遼寧卷)Atnotimedidtheyactuallybreaktherulesofthegame.Itwasunfairtopunishthem.

aheadoftime提前第6頁/共24頁allthetime一直atanytime在任何時(shí)候atatime一次，每次Itonetime曾經(jīng)，同時(shí)atthesametime同時(shí)fromtimetotime時(shí)不時(shí)地，偶爾takeone'stime從容不迫，不著急

todoastimegoeson隨著時(shí)間的推移第7頁/共24頁

2.Whatmanyscientistsbelieveisthatthecontinuedpresenceofwaterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.Thisproducedachainreaction,whichmadeitpossibleforlifetodevelop.很多科學(xué)家相信，由于地球上長期有水存在，它使得地球把有害氣體和酸性物質(zhì)溶解在海洋里。這就產(chǎn)生了連鎖反應(yīng),使得生命有可能開始發(fā)展了。(1)主語從句，表語從句第8頁/共24頁例1(陜西省)Themanagerwantstoseechangesinthecompany,andIamsurehewill

.A.inparticularB.inturnC.inchargeD.intime第9頁/共24頁(2)atmospheren.大氣層，大氣

theatmosphere氣氛，氛圍acomfortable/pleasantatmosphere①Theteachertriestocreateanatmosphereinclass

hisstudentscanpracticetheirspeakingskills.②(福建)Shehasagiftforcreatinganatmosphereforherstudents

allowsthemtocommunicatefreelywitheachothel.A.whichB.whereC.whatDwho第10頁/共24頁(2)presencen.存在；出席，在場inthepresenceofsb.=insb.'spresence當(dāng)著某人的面例“Rajfeelsratherawkwardinthepresenceofladies.presentadj.出席的，在場的；現(xiàn)在的，當(dāng)前的（3）allowv.允許，許可allowdoingsth.允許做某事例：Wedont'sallowsmokinghere.allowsb.todosth.允許某人做某事例：Hewont'sallowhimselftofail.第11頁/共24頁(4)dissolveinto

(使)溶入，(使)溶解；(使)融化成例:Snowandicedissolveintowater(5)makeitpossibleforsb.todosth.句型：vt+(形式賓語)+adj./n+(forsb.)

todosth(可變)vt:make,think,consider;,find,feel,judge例:Idon'tthinkitnecessarytoarguewithhim.TheymakeitaruletoreadEnglishwordseveryday.Idon'tthinkitworthwhilegoingtosuchaplace.第12頁/共24頁例1:ThedifferenceinthicknessandweightfromtheearlierversionmakestheiPad4morecomfortable

.

AheldBholdingCbeheldD.tohold例2：Nowadayspeoplesometimesseparatetheirwastetomakeiteasierforit

.A.reusingBreusedC.reuseD.tobereused做題小技巧：去掉形式賓語it，變換成正常語序第13頁/共24頁3.Theymultipliedandfilledtheoceansandseaswithoxygen,whichencouragedthelaterdevelopmentofearlyshellfishandallsortsoffish.它們繁殖起來就使得海洋充滿了氧氣，這為早期的貝類及其他各種魚類的發(fā)育進(jìn)一步創(chuàng)造了條件。(1)multiplyv.乘，迅速增加；(使)繁殖例：multiply2and4togetheryouget8multi-多multiculturaladj.多元文化的multimediaadj.多媒體的multinationaladj.跨國的，多民族的第14頁/共24頁(2)encouragevt.①鼓勵(lì)，鼓舞encouragesb.todosth.鼓勵(lì)某人做某事②激勵(lì)，促進(jìn)Highpricesencouragedfarming.高價(jià)格刺激了農(nóng)業(yè)encouragingadj.令人鼓舞的encouragementn.鼓舞，鼓勵(lì)couragen.勇氣discouragevt.使泄氣第15頁/共24頁4.Theylaideggstooandexistedontheearthformorethan140millionyears.However,65millionyearsagotheageofthedinosaursended.Whytheysuddenlydisappearedstillremainsamystery.它們也生蛋，在地球上生存了1.4億多年。然而,6500萬年前，恐龍時(shí)代結(jié)束了。它們?yōu)槭裁磿?huì)突然滅絕至今仍是個(gè)謎。詞形含義過去時(shí)過去分詞現(xiàn)在分詞lie說謊liedliedlyinglie躺，位于laylainlyinglie放置；下蛋l(fā)aidlaidlaying第16頁/共24頁(2)existvi.存在；生存existon靠…生存existencen.存在existentadj.存在的，實(shí)際的n.

例：remainabeginner（3）

adj.

例：remainsilent

doing

例：remainstandingremain+

done

例：remainuntouched

tobedone

例：remaintobeseen

介詞短語例：remaininLondon第17頁/共24頁5.Thustheyhave,intheirturn,becomethemostimportantanimalsontheplanet.于是，他們接著成為這個(gè)行行上最重要的動(dòng)物。（1）thusadv.因此，這樣（2）inone'sturn輪到某人例：Whenitwasinmyturn,Iurn依次；反之，反過來byturns輪流；交替地taketurnstodosth./indoingsth.輪到某人做某事第18頁/共24頁(廣東汕頭)Aheavylearningburdenleadstounhealthybehaviorssuchaspooreatinghabits,which

damagethehealthofstudents.A.initsturnB.inreturnC.inturnD.byturns輪到它的順序；作為回報(bào)；反之；輪流第19頁/共24頁6.Theyareputtingtoomuchcarbondioxideintotheatmosphere,whichpreventsheatfrom

escapingfromtheearthintospace.他們把過多的二氧化碳釋放到大氣層中，這使得地球上的熱不能釋放到太空中去。（1）preventv.阻止，預(yù)防preventsb./sth.(from)doingsth.主動(dòng)句中from可以省略，

stopsb./sth.(from)doingsth.

被動(dòng)句中不能省略

keepsb./tectsb./sth.fromdoingsth.保護(hù)…免受…第20頁/共24頁例5：Chinarecentlytighteneditswa