高中英語必修3 Unit4 Astronomy 教案、課件

AstronomyAstronomy23*

教學(xué)目標(biāo)Teachingaims:1．能夠辨認文中有關(guān)天文學(xué)的重點詞匯和術(shù)語，如system,theory,atmosphere,fundamental,intime,givebirthto,inone’sturn,prevent…from…等；2．理解文章結(jié)構(gòu)和內(nèi)容，理清地球上生命的起源和生物進化的過程。3．運用top-down的閱讀方法，先整體把握文章，再細化尋找信息；使用不同的閱讀技巧，如predicting、skimming、scanning等獲取相關(guān)信息，概括理解段落大意，完成流程圖；4．通過小組討論，討論生命進化的過程和保護環(huán)境的措施，鍛煉思維能力和口頭表達能力。23*教學(xué)目標(biāo)Teachingaims:2本單元的中心話題是“天文學(xué)”，內(nèi)容涉及太陽系、地球生命的起源、宇宙大爆炸、月球探秘、黑洞效應(yīng)等。這些話題較抽象、較難理解，因此，如何通過第一課時的設(shè)計，把抽象的內(nèi)容形象化，基本掃清學(xué)生閱讀和表達等障礙，顯得尤為重要。Reading部分主要是通過對宇宙大爆炸理論進行科學(xué)性分析，推斷出地球上生命的起源以及生物進化的過程。學(xué)生能夠結(jié)合已有知識和生活常識來理解相關(guān)問題，并針對文章中的一些發(fā)人深省的探討性問題展開討論，如：Theearthmaybecometoohottoliveon,sowhatwillourfuturebe?通過這些討論，學(xué)生能更好地了解我們生活的地球環(huán)境，同時也能激起了解和探究科學(xué)的興趣與熱情。本單元的中心話題是“天文學(xué)”，內(nèi)容涉及太陽系3ET外星人01ET外星人014A________isa_______ofsciencewhichstudiesthewhole

universe,

_________thestars,planets,themoonandetc.

branchincludingstronomyWhatisAstronomy?A________isa_______ofscie5Howmanyplanetscirclearoundthesuninthesolarsystemnow?A.9B.10C.8地球______木星_______火星_____水星________EarthJupiterMarsMercuryNeptuneE.海王星________F.土星_______G.天王星_______H.金星______SaturnUranusVenusTheSolarSystemQuizHowmanyplanetscirclearound6123456781.Mercury2.VenusEarth3.4.Mars5.Jupiter6.Saturn7.8.UranusNeptune123456781.Mercury2.VenusEarth374.WhichplanetwasremovedfromthesolarsystemonAug24th,2006?A.VenusB.JupiterC.Pluto3.Wheredidthelifeontheearthbegin?A.InfireB.InwaterC.Inspace2.Whichplanetisthelargestoneinthesolarsystem?A.EarthB.JupiterC.MarsQuiz4.Whichplanetwasremovedfro8Howdidtheearthandlifecomeintoexistence?Different______havedifferentideasaboutit.Question:Thereexistsomanyplanetsintheuniverse,among

isthemostimportant.theearthwhichreligions

culturescomeintobeingHowdidtheearthandlifecom9the

developmentHOWLIFEBEGANONTHEEAREHReadingthedevelopmentHOWLIFEBEGA10Para

1Awidelyaccepted

theoryabouttheformationof__________Para

2Theformationof_________Para

3Theimportanceof_____forlifePara

4Thedevelopmentof________

______ontheearthPara

5Theappearanceof______and

theireffectsontheearth

theuniverse

theearth

waterplantsand

animals

humansMainIdeasPara1Awidelyacceptedtheory11

anexplosionthat_____matterinalldirections

threw-Theuniversebeganwith

a_______,BigBangatomsstarsotherbodiesPara1.

12acloudofdustBigBanga

solid

globesettle

into

atmospherecool

down

waterexplode(Threeverbs&nounphrases)Para2.acloudofdustBigBangasoli13Watermadeitpossiblefor___

to

______.

Wherethereiswater,thereislife.Waterisf__________tothedevelopmentoflife.Water

dissolvedharmfulgasesandacidsintothe______and_____.life

develop

undamentaloceansseasPara3.TheimportanceofwaterWatermadeitpossiblefor___14

First,______________________

Next,___________________________Later,________Afterthat,_______________________Finally,_____________smallplants,shellfish,fishgreenplants,landanimalsinsects,amphibiansreptileshugeanimals--dinosaurs;mammalssmallcleveranimalsParas4-5.ThedevelopmentoflifeFirst,_____________________15TheBigBangwatersmallplantsinsectsandamphibiansreptilesonlandmammalsadvancedmammalsdinosaurswatersmallplantsinsectsandr16Question:

Arehumanbeings

takinggoodcareofit?Question:

Arehumanbeings17

______heatfromescapingfromtheearthintospace....toomuch__________intotheatmosphere,whichgreenhouse______global

_______carbondioxide

prevents

effectwarmingProblemResult______heatfromescapingfro18Thelastsentenceofthepassage:

Anysolutionstotheproblem?toohottoliveon“Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependon

whether

thisproblemcanbesolved.”Discussion:Thelastsentenceofthepassa19solarenergyplanttreesrecyclerubbishsavewaterpurifyairsolarenergyplanttreesrecycle20Whether

lifewillcontinueontheearth

dependson

humanbeings.EarthDayApril22Onlyifwecarecanwehelp!Onlyifwehelpwillallbesaved!Whetherlifewillcontinueon21ThankYou!ThankYou!22

Unit4

wordsandexpressionsUnit4231.學(xué)生能夠了解本單元單詞的基本用法。2.學(xué)生能夠辨析易混淆詞的用法，并能熟練運用。3.學(xué)生能夠掌握重點難點次的拓展及其用法。4.學(xué)生能夠用所學(xué)單詞翻譯或造出句子，提升自己

的句子表達和寫作水平。1.學(xué)生能夠了解本單元單詞的基本用法。24本節(jié)課為unit4的單詞和短語教學(xué)，單詞本來是零散的，易混的，但是本節(jié)課運用了從點到線，從線到面的詞匯教學(xué)方法，使重點難點單詞成了容易掌握的單詞塊，單詞串，從而實現(xiàn)了知識即詞匯的重新組合，這一點也符合新的英語教學(xué)大綱的要求。

首先，用聽本單元的單詞錄音進行導(dǎo)入，讓學(xué)生從整體上感知下單詞。然后，對重點單詞進行講解，既有對單詞用法的拓展，又有對短語釋義的延伸。講解和鞏固練習(xí)結(jié)合，讓學(xué)生加深理解詞匯用法并當(dāng)堂掌握。而且，練習(xí)形式多樣化，有翻譯，有填空，有選擇，從各個角度來對詞匯關(guān)進行突破。除此之外，加入的圖片更是恰到好處，和例句相結(jié)合，加深了學(xué)生對詞匯的印象和理解。

本節(jié)課為unit4的單詞和短語教學(xué)，單詞本來25wordsandexpressionsListentothewordsandexpressionsofunit4,andpaymoreattentiontotheirpronunciation.wordsandexpressionsListento261.violentadj.猛烈的；激烈的；

adv.

猛烈地；激烈地；n.猛烈；激烈；暴力；violentlyaviolentattack

violentdislikeviolentpainviolence漢譯英猛烈的進攻

極其的厭惡

極度痛苦1.violentadj.猛烈的；激烈的；27船在海上強烈的風(fēng)暴中沉沒。Theboatsankina______________atsea.violentstormviolentstorm281)FredandJimdidnotlikeeachotheratfirst,butintimetheybecamefriends.2)Wewerejustintimeforthebus.3)Youwillrealizehowyourparentsloveyouintime.及時;最終;總有一天;

及時最終總有一天attimesontimeatonetimeallthetimeonceuponatime一直按時;準(zhǔn)時有時;不時曾經(jīng)，一度從前2.intime1)FredandJimdidnotlikeea29（1）大氣層地球的大氣層包括水蒸氣、二氧化碳、氧氣、氮氣和其他氣體。Theearth’satmosphereincludes

、

、

、

and

othergases.（2）氣氛Completelylostintheexciting

ofthefootballmatch,Tomdidn’tfeelhispocketpicked.AsceneBviewCatmosphereDsightwatervapournitrogencarbondioxideoxygen3.atmospheren.（1）大氣層watervapournitrogencar304.harmn.&v.損害;傷害

beharmfulto

doharmto

adj.有害的

adj.無害的harmfulharmless對……有害adj.有害的31

吸煙對身體有害。

Smoking_____________yourhealth.isharmfulto

吸煙對身體有害。isharmfulto325.multiply(數(shù)目上)增加，增多；乘；（使）繁殖

1)Ourproblemshavemultipliedsincelastyear.

2)2and5multiplytomake10.

4)Theplantsheremultiplyrapidly.3)6multipliedby5is30.=Multiply6by5tomake30.5.multiply(數(shù)目上)增加，增多；乘；（使）繁33lielielay動詞過去式過去分詞現(xiàn)在分詞意義擱,放,下蛋l(fā)aylainlying躺，位于liedliedlying撒謊laidlaidlaying6.laylielielay動詞過去式過去分詞現(xiàn)在分詞意義擱,放,下蛋341)Thenaughtyboy___tomethatthehenthat___therejustnowhad___twoeggsthedaybefore.A.laid;laid;laidB.laid;lay;lainC.lied;laid;lainD.lied;lay;laid2)翻譯:他把他的書放在桌子上。Helaidhisbookonthedesk.1)Thenaughtyboy___eintoexistenceexiston靠…為生existin存在于…之中1)Doeslife______(存在)onMars?2)Whendidtheworld________________(產(chǎn)生)?3)Hedoesn’tbelieveinthe_______ofGod?A.lifeB.existC.existenceD.exhibition4)Icanhardlyexist_____thewageI’mgetting.There’snomoremoneyleftforluxuries.A.byB.inC.onD.intoexistcomeintoexistence7.existvi.existenceeintoexisten36這只狗已經(jīng)生了個5只小狗狗。Thedog________________fivebabydogs.8.givebirthto生(孩子);產(chǎn)生

hasgivenbirthto這只狗已經(jīng)生了個5只小狗狗。8.givebirth379.inone’sturn輪到某人,接著

It’sone’sturntodosth(輪到)該某人做….

inturn依次,反之,反過來

byturns輪流;交替地9.inone’sturn輪到某人,接著3810.prevent……from阻止……做某事

stopsb./sth.(from)doingkeepsb./sth.fromdoing10.prevent……fromstopsb./st39Lynn’sparentstriedto_____her______him.

林恩的父母企圖阻止她和他見面。

Youwon’t_____________thethings______happening.你不能阻止事情發(fā)生。stopseeingkeep/preventfromstopseeingkeep/preventfrom40

11.puzzlen.謎，謎題

vt.&vi(使)迷惑，(使)為難adj.令人迷惑的

adj.感到迷惑的

n.

迷惑，為難puzzlingpuzzledpuzzlementbepuzzledat/by對……感到迷惑11.puzzlen.謎，41我對這道題感到迷惑。I______________thequestion.waspuzzledby我對這道題感到迷惑。I______________the4212.pulln.&vt.拉；拖；牽引力

ant.推

從……拉出來

pushpulloutof12.pulln.&vt.拉；拖；牽引力43他們把車子從泥漿中拉出來。They______________________themud.pulledthecaroutof他們把車子從泥漿中拉出來。They____________4413.cheerup:歡呼，喝彩，感到高興當(dāng)看到球隊的到來，人群歡呼起來。_____________________

whentheysawtheteamarrive.他帶她去聽音樂會來使她高興。Hetookher_____________to____________.Thecrowdcheereduptotheconcertcheerherup13.cheerup:歡呼，喝彩，感到高興當(dāng)看到球隊的4514.breakout(戰(zhàn)爭,爭吵,疾病等)爆發(fā)它與happen,takeplace,comeout等詞的用法一樣，是不及物動詞，不能帶賓語，不能用于被動語態(tài)！14.breakout(戰(zhàn)爭,爭吵,疾病等)爆發(fā)它與h46happen：breakout：takeplace：強調(diào)偶然性的發(fā)生指戰(zhàn)爭,災(zāi)難,疾病的發(fā)生強調(diào)必然性或者按事先的安排或計劃發(fā)生happen：強調(diào)偶然性的發(fā)生指戰(zhàn)爭,災(zāi)難,疾病的發(fā)生強調(diào)必47happenbreakouttakeplace1.TheOlympics___________everyfouryears.2.Howdidtheaccident_________?3.WordWarⅠ_________in1914.takeplacehappenbrokeouthappenbreakouttakepla48breakdown

打破;毀掉;破除;坍塌;壞掉breakin

破門而入;打斷breakawayfrom

脫離政黨;打破陳規(guī)

breakthrough

突圍;突破breakup

打碎;拆散;分裂;分解breakone'sword/promise

食言;說話不算數(shù)breakdown49高中英語必修3Unit4Astronomy教案、課件50NounclausesasthesubjectUnit4Grammar主語從句NounclausesasUnit4Grammar51231、幫助學(xué)生了解、熟悉并初步掌握名詞性從句—主語從句的用法。2、使學(xué)生能夠找出主語從句，并動手解決主語從句的相關(guān)練習(xí)。3、學(xué)會用主語從句簡單會話表達。231、幫助學(xué)生了解、熟悉并初步掌握名詞性從句—主語從句的用52

本課首先開始于簡單句子到復(fù)合句子中對主語的認識，從學(xué)生熟悉的名詞、人稱代詞充當(dāng)主語，一步一步由淺入深過渡到句子作主語。旨在給學(xué)生有個初步認識，為下面的環(huán)節(jié)打基礎(chǔ)。

通過小組競賽，在已學(xué)的reading中快速找出主語從句，旨在加深學(xué)生對主語從句的認識程度，競賽有利于培養(yǎng)學(xué)生的合作能力，使語法課生動活躍起來。通過不同的語法練習(xí)的呈現(xiàn)、講練結(jié)合—看圖根據(jù)對話寫出主語從句及各種語法任務(wù)設(shè)置，使學(xué)生掌握主語從句的相關(guān)知識。尤其是tryyourluck部分更能調(diào)動學(xué)生學(xué)語法知識的氣氛，提高學(xué)生解決語法知識的能力，熟悉主語從句。本課首先開始于簡單句子到復(fù)合句子中對主語的認識，從學(xué)生53preparationWhatpartdoestheunderlinedpartserveasineachsentence?

Atree

hasfallenacrosstheroad.

Youareastudent.

Tofindyourway

canbeaproblem.

Smoking

isbadforyou.

Whatshesaidisnotyetknown.

Thatweshallbelate

iscertain.

It

iscertainthatweshallbelate.主語名詞充當(dāng)主語人稱代詞充當(dāng)主語不定式充當(dāng)主語動名詞充當(dāng)主語句子充當(dāng)主語句子充當(dāng)主語it充當(dāng)形式主語preparationWhatpartdoes54Let’sseewhichgroupcanfindthesentenceslikethefollowingexamplesinReadingon26

morequickly.Attentionplease:1.Fourorsixpeopleinagroup.2.Trytofindasmanysentenceslikethefollowingexamplesaspossible!3.Ifyourgroupfinishthetask,pleaseputupyourhandandonemembershouldtellusallthesentencesyourgrouphavefound.GroupcompetitionExamples:(sentencesservedassubject)

Whatshesaidis

notyetknown.

Thatweshallbelate

is

certain.

It

is

certainthatweshallbelate.Let’sseewhichgroupcanfind551.Whatitwastobecome

wasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.地球會變成什么樣子，直到45億至38億年前這個云團變成固體的球狀物，才確定下來。2.Theearthbecamesoviolentthatitwasnotclearwhethertheshapewouldlastornot.

地球變得激烈動蕩，不知道這個固體形狀是否會繼續(xù)存在下去。3.Whatisevenmoreimportantisthatastheearthcooleddown,waterbegantoappearonitssurface.

更重要的是，隨著地球的冷卻，地球的表面就開始出現(xiàn)了水。4.Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothedevelopmentoflife.水對于生命的發(fā)展會起關(guān)鍵作用，這一點在當(dāng)時并不明顯。SentencesinReadingP25-26Read&translate所有劃線的句子都充當(dāng)___________.那么什么是主語從句呢？主語1.Whatitwastobecomewasu56

主語從句(SubjectClause)如果一個句子在復(fù)合句中充當(dāng)一個主語,那么這個句子就是主語從句。Thathefinishedwritingthecompositioninsuchashorttime

surprisedusall.

Whatweneedaregooddoctors.Whomwemuststudyforisaquestionofgreatimportance.Whatissubjectclause?主語從句(SubjectClause)如果一個句57主語從句三要素

hebecameagreatscientistis

knowntousall.Is

whatyoutoldmereallytrue?謂語動詞用單數(shù)從句用陳述語序不能省略關(guān)聯(lián)詞Notice:Whatweneedmost

are

books.How主語從句三要素hebecameagr58_________________hasnotbeenfound.StudentA:wherewasThomasEdisonborn?StudentsB:Idon’tknow.Ican’tfindtheanswerinthepassage.Wherehewasborn_________________hasnotbeen59_____________________isstillunknown.StudentA:whowillwintheEnglishspeechcontest?StudentsB:Idon’tknow.Itishardtosay.Whowillwinthematch_____________________isstill60________________willbewelcome.StudentA:Tom,tomorrowisyourbirthday.Whodoyouinvite?StudentsB:Iwillwelcomeeveryonewhocomestomyparty.Whoevercomes________________willbewelcom61在主語從句中,謂語一般用單數(shù)。無論他說什么都不重要。Whateverhesaysis

ofnoimportance.無論誰說這話都不對。

Whoeversaysthatis

wrong．但謂語動詞用單數(shù)還是復(fù)數(shù),不可一概而論,而要視句子的意義而定。

WhatIneedismoney.WhatIneedare

books.在主語從句中,謂語一般用單數(shù)。無論他說什么都不重要。但謂語62what與that在引導(dǎo)主語從句時的區(qū)別what引導(dǎo)主語從句時在句時在從句中充當(dāng)句子成分,如主語、賓語、表語,而that則不然。1)What

yousaidyesterdayisright.2)That

sheisstillaliveisaconsolation.what與that在引導(dǎo)主語從句時的區(qū)別63為了防止句子頭重腳輕，通常把形式主語it

放在主語位置，真正主語后置。Itiscertainthathewillwinthematch.Thathewillwinthematch

iscertain.2.Itistruethathehasmadeaveryimportantdiscoveryinchemistry.Thathehasmadeaveryimportantdiscoveryinchemistry

istrue.3.Itisverylikelythattheywillholdameeting.

Thattheywillholdameeting

isverylikely

.為了防止句子頭重腳輕，通常把形式主語it放在主語位置，真正64

1.以that引出的主語從句,常以形式主語it引導(dǎo),結(jié)構(gòu)為:Itis+形容詞/名詞/某些動詞ed+that從句。

(1)Itis+形容詞/名詞+that從句，如：

Itisapity/shamethat…遺憾的是…Itispossiblethat…很可能…Itisunlikethat…不可能…(2)It+不及物動詞+that從句，如：

Itseems/appearsthat….似乎…Ithappenedthat…碰巧…1.以that引出的主語從句,常以形式主語it引導(dǎo),65It+be+過去分詞+that從句Itissaidthat…據(jù)說…Itisknowntoallthat…眾所周知…Itisreportedthat…據(jù)報道…Itisbelievedthat…人們相信…Itissuggestedthat…有人建議…Itmustbepointedoutthat…必須指出…It+be+過去分詞+that從句66Tryyourluck!Choosethepicturesandfinishtheexercisewithyourgroup!Tryyourluck!Choosethepict671.______watchwaslostisunknown.2.________youdidisright.3._________wewillgoforanoutingtomorrowremainsunknown.4.______weneedistime.5.______willbeourmonitorhasn'tbeendecidedyet.whetherwhatwhowhosewhateverUsethewordsbelowtofillintheblanks.WhetherWhatWhateverWhoseWhoback1.______watchwaslostisun68【常見錯誤展示】下列各句均有一處錯誤，請改正并分析錯誤的原因。1.Lighttravelsfasterthansoundiscommonknowledge.2.Ifshe’scomingornotdoesn’tmattermuch.Thatthat雖無詞義但引導(dǎo)主語從句位于句首時不能省略。Whetherif,whether都可表示“是否”,但if不能引導(dǎo)位于主句之前的主語從句，它可以引導(dǎo)位于主句之后帶有形式主語it的主語從句。back【常見錯誤展示】下列各句均有一處錯誤，請改正并分析錯誤的原因69Youareluckytoday!Youdon’tneedtodoexercises!backYouareluckytoday!back703.Thattheprofessorsaidisofgreatimportance.4.Wherewillthetreesbeplantedhasnotbeendecided.Whatthat引導(dǎo)主語從句時無詞義。Whattheprofessorsaid表示“教授所說的”。將will置于trees之后。主語從句要用陳述句語序。back【常見錯誤展示】下列各句均有一處錯誤，請改正并分析錯誤的原因。3.Thattheprofessorsaidi715.Nomatterwhobreakstherulewillbepunished.6.Whenthemeetingwillbeheldstillremainaquestion.引導(dǎo)讓步狀語從句時二者可互換，但引導(dǎo)名詞性從句時只能用whoever。Whoever主語從句表示單一概念時，謂語要用單數(shù)形式。remainsback【常見錯誤展示】下列各句均有一處錯誤，請改正并分析錯誤的原因。5.Nomatterwhobreakstheru727.Itwasrequestedthateveryonemadeaspeechatthemeeting.在“Itisrequested/ordered/suggested+that從句”中，從句要用虛擬語氣，即謂語用“should+動詞原形”，should可省略。(should)makeback【常見錯誤展示】下列各句均有一處錯誤，請改正并分析錯誤的原因。在“Itisrequested/ordered/73Finishex.2inDiscoveringusefulstructures.GroupworkFinishex.2inDiscoveringuse74Discoveringusefulstructures

1.Hisdiscoveryhasnotyetbeenproved.What__________________________________.2.Dotheotherastronomersaccepthisideas?Itremainsaquestion.Whether______________________________________________.3.Thefirstappearanceoflifeonearthisstillamysterytoscientists.How______________________________________________.hasnotyetbeenproved

ishisdiscovery

otherastronomersacceptshisideasremainsaquestionlifefirstappearedonearthisstillamysterytoscientistsEx.2Discoveringusefulstructures754.Whyistheearthbecomingwarmer?Itisanimportanttopicforresearch.Why__________________________________________________________________________.5.StephenHawkingat65experiencedzerogravityduringaflight.Itamazedeverybody.Itamazedeverybody____________________________________________________________________________.6.Plutoisnolongerconsideredaplanetinoursolarsystem.Whatasurprise!Itisasurprise________________________________________________________________________.thatStephenHawkingat65experiencedzerogravityduringaflight.thatPlutoisnolongerconsideredaplanetinoursolarsystemtheearthisbecomingwarmerisanimportanttopicforresearch4.Whyistheearthbecomingw761.主語從句位于句首時必須由連接詞引導(dǎo)。2.主語從句后置時引導(dǎo)詞that可省略。3.主語從句位于句首時,不能用if引導(dǎo)。4.主語從句后置時,可以用if引導(dǎo)。1.主語從句位于句首時必須由連接詞77Finishex.2&3inyourworkbook;2)Writedown5subjectclausesinyourexercisebook.Finishex.2&3inyourworkbook78Unit4UsingLanguageUnit4UsingLanguage79讓學(xué)生能讀懂文章的大意及細節(jié)，并能捕捉到題中的相關(guān)的細節(jié)在文中的位置。幫學(xué)生梳理文中的重點語言點的用法，并引導(dǎo)他們?nèi)ミ\用，并進行相關(guān)的拓展。讓學(xué)生能讀懂文章的大意及細節(jié)，并能捕捉到題中的80本節(jié)課是unit4Astronomy:thescienceofthestars的第二篇小課文，設(shè)計的意圖主要是讓引導(dǎo)學(xué)生對本文中的細節(jié)問題進行準(zhǔn)確處理，除此之外，對文中的重點考點及其延伸做必要恰當(dāng)?shù)奶幚恚龅酵卣褂卸龋卣褂袚?jù)，也就是根據(jù)考綱進行補充，使這節(jié)課的英語教學(xué)不局限于課本，但又不超越大綱。

首先，用和themoon相關(guān)的圖片導(dǎo)入，引發(fā)并激起學(xué)生的興趣，從而自然的過度到讓學(xué)生描述thethreewaysinwhichgravitychangedforLiYanping。其次，讓學(xué)生listentothetext,然后填好表格，從而達到了聽讀結(jié)合的目的?？傊?，任務(wù)型閱讀法教學(xué)幫學(xué)生更深層次的理解了課文。本文的語言點教學(xué)部分，有解釋，有拓展，講練結(jié)合，實現(xiàn)了重點語言點的突破。

本節(jié)課是unit4Astronomy:t81avisittothemoonReading2avisittothemoonReading282spacewalk★L(fēng)ookatthepictures!★spacewalk★L(fēng)ookatthepictures83高中英語必修3Unit4Astronomy教案、課件84

85高中英語必修3Unit4Astronomy教案、課件86WritedownthethreewaysinwhichgravitychangedforLiYanping.ReadingIscanning&skimming(2m)Writedownthethreewaysinw87ThewaygravitychangedLefttheearthInspaceOnthemoon3.Itbecameverylight.Thegravitybecameverystrong.2.Thegravitydisappeared.ThewaygravitychangedLeftth88Hisweightschangedthreetimestoo.Nowlistentothepassageandwritethemdown.usinglanguagereadingHisweightschangedthreetime89TheweightchangedLefttheearthInspaceOnthemoonHebecameveryheavy.Hehadnoweightandcouldfloataroundlikeafeather.Hewasaboutone-sixthofhisweightontheearth.TheweightchangedLefttheear90LanguagepointsinthispassageLanguagepointsinthispassag911.LastmonthIwasluckyenoughtohaveachancetomakeatripintospacewithmyfriendLiYanping,anastronomer.

上個月我有幸得到一個機會同我的朋友，一位宇航員李彥平一道去太空旅行。enough的用法:1）形容詞作定語：enough用在名詞前、后都可以。

Ihaveenoughtimetodothework./Ihavetimeenoughtodothework.

我有足夠的時間做此項工作。1.LastmonthIwasluckyenou92

2）用作副詞修飾形容詞或副詞表示程度:enough一般放在形容詞或副詞的后邊。

longenough,fastenough,quicklyenough等。但一般不說：enoughlong,enoughfast,enoughquickly.Theboyisoldenoughtogotoschool.

這孩子到上學(xué)的年齡了。3）用作副詞修飾動詞時也需放在動詞之后。

Themeatisnotcookedenough.

肉燉得不夠熟。IfIhad_____________________(足夠長的假期),I’dvisitEurope,stoppingatallthesmallinterestingplaces.alongenoughholidayalongenoughholiday932.…theforce…

forcen.力量，暴力，軍隊

vt.強制，逼迫，用力打某物

comeintoforce開始生效；開始實施put…intoforce施行（法律等）forcesbtodosth迫使某人做某事forcesthonsb勉強接受某物forcefuladj.有力的forcedadj.強迫的2.…theforce…943.Thenwewere

off.

隨后我們就啟程了。

beoff=setoff出發(fā)；動身

與off相關(guān)的短語:see...off送行

jumpoff跳下

giveoff散發(fā)

showoff炫耀getoff下車takeoff脫下turnoff關(guān)閉payoff付清；還清3.Thenwewereoff.與off相關(guān)的短954.Whenwegetclosertothemoon,weshallfeelitsgravitypullingusbutitwillnotbeasstrongapullastheearth’s.getcloseto

靠近，接近，指動態(tài)變化

becloseto

距近，指狀態(tài)

Theschoolisclosetothepostoffice.4.Whenwegetclosertothem961).“A+be+倍數(shù)+as+形容詞原級+as+B”.

Thistreeisthreetimesastallasthatone.Hisfatheristwiceasoldashe.5.ButwhenItriedtostepforwardIfoundIwascarriedtwiceasfarasontheearthandfellover.

1).“A+be+倍數(shù)+as+形容詞原級+972).“A+be+倍數(shù)+形容詞比較級+than+B”TheYangtzeRiverisalmosttwicelongerthanthePearlRiver.

長江差不多比珠江長兩倍。Thenumberofstudentsinourschoolisthreetimeslargerthanthatintheirs.

我們學(xué)校的學(xué)生數(shù)量比他們學(xué)校的多三倍。2).“A+be+倍數(shù)+形容詞比較級+tha983).“A+be+倍數(shù)

+the+名詞

(size,length,amount)+of+B”Thenewlybroadenedsquareisfourtimesthesizeofthepreviousone.

新擴建的廣場是未擴建時的四倍大。3).“A+be+倍數(shù)+the+名詞99

經(jīng)過實驗，這種細胞已經(jīng)變得有那種細胞的三倍大了．1.Aftertheexperiment,thiscellhasbecomethreetimesaslargeasthatone.2.Aftertheexperiment,thiscellhasbecometwicelargerthanthatone.3.Aftertheexperiment,thiscellhasbecomethreetimesthesizeofthatone.經(jīng)過實驗，這種細胞已經(jīng)變得有那種細胞的三倍大了．1006.getthehangofsth.查看某物運作了解…..的意義我一直想知道這部新的打字機的用法.I’vebeentryingto______________thisnewtypewriter.我不十分了解你的論據(jù)的意義.Idon’tquite__________________yourargument.getthehangofgetthehangof6.getthehangofsth.查看某物運作了解1017.Wewatched,amazedasfirebrokeoutontheoutsideofthespaceshipastheearth’sgravityincreased.amazed是過去分詞，此處做狀語用

他進來的時候沒有人注意到.Hecamein_________.unnoticed7.Wewatched,amazedasfireb102AstronomyAstronomy23*

教學(xué)目標(biāo)Teachingaims:1．能夠辨認文中有關(guān)天文學(xué)的重點詞匯和術(shù)語，如system,theory,atmosphere,fundamental,intime,givebirthto,inone’sturn,prevent…from…等；2．理解文章結(jié)構(gòu)和內(nèi)容，理清地球上生命的起源和生物進化的過程。3．運用top-down的閱讀方法，先整體把握文章，再細化尋找信息；使用不同的閱讀技巧，如predicting、skimming、scanning等獲取相關(guān)信息，概括理解段落大意，完成流程圖；4．通過小組討論，討論生命進化的過程和保護環(huán)境的措施，鍛煉思維能力和口頭表達能力。23*教學(xué)目標(biāo)Teachingaims:104本單元的中心話題是“天文學(xué)”，內(nèi)容涉及太陽系、地球生命的起源、宇宙大爆炸、月球探秘、黑洞效應(yīng)等。這些話題較抽象、較難理解，因此，如何通過第一課時的設(shè)計，把抽象的內(nèi)容形象化，基本掃清學(xué)生閱讀和表達等障礙，顯得尤為重要。Reading部分主要是通過對宇宙大爆炸理論進行科學(xué)性分析，推斷出地球上生命的起源以及生物進化的過程。學(xué)生能夠結(jié)合已有知識和生活常識來理解相關(guān)問題，并針對文章中的一些發(fā)人深省的探討性問題展開討論，如：Theearthmaybecometoohottoliveon,sowhatwillourfuturebe?通過這些討論，學(xué)生能更好地了解我們生活的地球環(huán)境，同時也能激起了解和探究科學(xué)的興趣與熱情。本單元的中心話題是“天文學(xué)”，內(nèi)容涉及太陽系105ET外星人01ET外星人01106A________isa_______ofsciencewhichstudiesthewhole

universe,

_________thestars,planets,themoonandetc.

branchincludingstronomyWhatisAstronomy?A________isa_______ofscie107Howmanyplanetscirclearoundthesuninthesolarsystemnow?A.9B.10C.8地球______木星_______火星_____水星________EarthJupiterMarsMercuryNeptuneE.海王星________F.土星_______G.天王星_______H.金星______SaturnUranusVenusTheSolarSystemQuizHowmanyplanetscirclearound108123456781.Mercury2.VenusEarth3.4.Mars5.Jupiter6.Saturn7.8.UranusNeptune123456781.Mercury2.VenusEarth31094.WhichplanetwasremovedfromthesolarsystemonAug24th,2006?A.VenusB.JupiterC.Pluto3.Wheredidthelifeontheearthbegin?A.InfireB.InwaterC.Inspace2.Whichplanetisthelargestoneinthesolarsystem?A.EarthB.JupiterC.MarsQuiz4.Whichplanetwasremovedfro110Howdidtheearthandlifecomeintoexistence?Different______havedifferentideasaboutit.Question:Thereexistsomanyplanetsintheuniverse,among

isthemostimportant.theearthwhichreligions

culturescomeintobeingHowdidtheearthandlifecom111the

developmentHOWLIFEBEGANONTHEEAREHReadingthedevelopmentHOWLIFEBEGA112Para

1Awidelyaccepted

theoryabouttheformationof__________Para

2Theformationof_________Para

3Theimportanceof_____forlifePara

4Thedevelopmentof________

______ontheearthPara

5Theappearanceof______and

theireffectsontheearth

theuniverse

theearth

waterplantsand

animals

humansMainIdeasPara1Awidelyacceptedtheory113

anexplosionthat_____matterinalldirections

threw-Theuniversebeganwith

a_______,BigBangatomsstarsotherbodiesPara1.

114acloudofdustBigBanga

solid

globesettle

into

atmospherecool

down

waterexplode(Threeverbs&nounphrases)Para2.acloudofdustBigBangasoli115Watermadeitpossiblefor___

to

______.

Wherethereiswater,thereislife.Waterisf__________tothedevelopmentoflife.Water

dissolvedharmfulgasesandacidsintothe______and_____.life

develop

undamentaloceans