選修8第二單元UsingLanguage課件

選修8英語教學(xué)課件系列Unit2CloningUsingLanguage霸王龍tyrannosaurus劍龍stegosaurs雷龍brontosaurus翼龍pterodactylLookatthefollowingpicturesandthinkwhichfilmtheyarefrom.

HaveyoueverseenthefilmJurassicPark?Whydopeoplelikethisfilm?Whatanimalsdoyouseeinthefilm?Aretheyreal?Arrangeaccordingtotime.5.researchusingtheembryosofmice4.firstexperimentalclonesofcows8.firstexperimentalclonesofmice7.workontheembryosofsheepandmice2.China’sfirstclonedtwincalves3.cloningoffrogs6.firstcloneofamammal1.cowgavebirthtoabison35784612SkimmingScientistsarestillexperimentingwithcloningmammalsbecausetheythinkitcanmakemoney.Theanimalsthathavedisappearedfromtheearth,likedinosaurs,canbebroughtbacktolifethroughcloning.Ifwecancloneanyextinctanimals,weshouldletthemliveinazoo.FFFTrueorFalse1.Thewriterofthetext_____.A.isexcitedbythepossibilityofcloningfierceandextinctanimalsB.believesthatextinctanimalscanbebroughtbacktolifebycloningC.thinksitimpossibleorunsuitabletocloneextinctanimalslikedinosaursD.dreamsofdinosaursreturningtotheearthChoosethebestanswer.

C3.Whichofthefollowingistrue?A.Micewereclonedin1981.B.Dollythesheepwasthefirstclonedanimal.C.Thenameoftheclonedcowis“Bison”.D.Chinawassuccessfulincloningmammals.

D

4.ThereasonswhyagroupofclonedanimalsalldieofthesameillnessdoNOTinclude____.A.theyhavethesamearrangementofgenesB.thereisn’tenoughdiversityinthegroupforittoovercomeillnessesC.theillnessisanewoneD.theirarrangementofgenescannotresistthatnewdiseaseC

5.Wecaninferfromthetextthat____.A.scientistsareexperimentingtoclonedinosaursB.dinosaurswillneverreturntotheearthC.clonedanimalswillonlyliveinthezooD.theDNAofdinosaurscanonlysurvive10000yearsB

2.Whyisitwrongtocloneanextinctanimalifitwouldliveinazoo?

Itisnotagoodideatocloneananimalthatwouldliveinazoobecauseitisnotasuitablehabitattodevelopandincreaseitsnumbers.Thezooisnotanaturalenvironmentforawildanimal.3.Whycan’tyouclonetheDNAofanimalsthathavebeenextinctlongerthan10,000years?TheDNAofanimalsmorethan10,000yearsoldisnotsuitableforcloning,foritcan’tsurvivesolong.Givesomereasonswhyitiseitherimpossibleorunsuitabletocloneextinctanimals.Reason1:Reason2:Reason3:YouneedperfectDNA.Thereisnotenoughdiversityforclonedanimalstoovercomenewdiseases.Itwouldbeunfairtocloneanyextinctanimalsiftheywouldhavetoliveinazoo.PeopleinterestedinNotonlyfilmmakersbutalso_________________.________foritsimpossibility

PerfectDNAisneeded.Thereisnotenough________inthegroup.A(n)______________wouldbeneededfortheclonedextinctanimals.ordinarypeopleReasonsdiversitysuitable

habitat__________Thechanceofdinosaursreturningtotheearthis______________.Conclusionmerelya

dreamCarefulReadingChoosesynonyms1.Itproveshowtheidea

struck

amixtureoffearandexcitementinto

people’s

hearts.A.HaveonthebrainB.ConfusedC.DrovedpeoplecrazyD.Scared2.From

time

to

timepeoplesuggestthatextinctanimals…

A.TherewasatimewhenB.OccasionallyC.AllthetimeD.EachtimeA

B

7.Thechanceofdinosaurseverreturningtotheearthismerelyadream.A.onlyB.surelyC.abruptlyD.miserablyA

1.ThepopularityofthefilmJurassicPark,inwhichascientistclonesseveraldifferentkindsofextinctdinosaurs,proveshowtheideastruckamixtureoffearandexcitementintopeople’sheart.

電影侏羅紀(jì)公園的受歡迎證實(shí)了普通人對這一話題是多么感興趣,在該電影中一位科學(xué)家克隆了幾種不同的絕種恐龍。本句是一個復(fù)合句,inwhich引導(dǎo)非限制性定語從句,修飾“thefilm”;how引導(dǎo)賓語從句,作prove的賓語。Language

PointsManypeoplewhohadseenthefilmwereafraidtogototheforestwhentheyrememberedthescenes_____peoplewereeatenbythetiger.(05,廣東)

A.inwhich

B.bywhich

C.which

D.that解析:答案A。題意為“很多看過這部電影的人,當(dāng)回想到人被老虎吃掉的情景時,就不敢去森林了”。本題考查“介詞+關(guān)系代詞”引導(dǎo)的定語從句。“peoplewereeatenbythetiger”是定語從句,先行詞thescenes在定語從句中作地點(diǎn)狀語,表示“在這種場景中”所以選A。Apopular

adj.

popularity

n.strike

v.打;撞擊;罷工strike…intoone’sheart

使……刻骨銘心Hestruckaknifeintothetraitor’sheart.

他將刀戳入賣國賊的心臟。2.Do/make/carryout/performanexperimenton/in/with…

做……實(shí)驗，對……做實(shí)驗3.fromtimetotime有時；偶爾；時常4.bringbacktolife使復(fù)生區(qū)別:bringbacktolife與cometolifebringbacktolife

是從某個事情中,給喚回到現(xiàn)實(shí)生活中,比如,從睡夢中醒來,有點(diǎn)恍然大悟的意思,或者是從生死關(guān)頭逃離出來幸好得以保命之類;而cometolife指出生,有生以來。5.

but

others

will

survive

and

passon

the

abilitytoresistthatdiseaseto

the

next

generation.

passon…to…傳遞;留給Wouldyoupassitontothenextperson?把它傳給下一個人好嗎?2)resist

vt.

抵抗，反抗；抗拒Thenationwasunabletoresisttheinvasion.該國無力抵抗侵略。6.Basedonwhatweknownow,youcannotcloneanimalsthathavebeenextinctlongerthan10,000years.就我們現(xiàn)在所知,你不可能克隆那些已經(jīng)絕種了一萬年以上的動物。

Basedonwhatweknownow是過去分詞短語作狀語,其邏輯主語一般和句子的主語相一致。_____byagreaterdemandforvegetables,farmershavebuiltmoregreenhouses.(07,浙江)

A.Driven

B.Beingdriven

C.Todrive

D.Havingdriven解析:答案A。題意為“由于受到更大的蔬菜量需求的推動,農(nóng)民修建了更多的溫室”。根據(jù)by,應(yīng)用被動,排除C和D。根據(jù)后邊的完成時態(tài),驅(qū)動力已經(jīng)有了,不是正在推動,故選A。AFillintheblankswiththewordsgiven.1.Shewas___________byherhusband’sdeath.2.Myunclecomestohavedinnerwithus________________.3.Hehasbeenworkingsohardathislessons,sohe____________passtheexamthistime.4.Finallyhisefforts__________.5.Allofthemwerestrongly_____________theproject.castdownfrom

time

to

timecastdownpayoffinfavouroffromtimetotimebeboundtois

bound

topaid

offin

favour

ofIscloningcruel?ListenandseewhetheryouagreewithXiaoQingorRachel.ListeningandSpeaking1Readthesestatementsbeforelistening.Tickthosethatyouhear.

□1.Cloningwillbringdeadpetstolife.□2.Therewere627experimentsbeforeDollywassuccessfullycloned.□3.Cloningmayhelpcureseriousillnesses.□4.It’sadeadend.□5.Dollythesheepwas“middle-aged”whenshewasborn.□6.Soyourgrandmotherwouldbeabletostartherlifealloveragainandlivemuchlonger.

√√√√2Listentothetapeagainandthenfillinthechart.Mary’sideasaboutcloningcruel

to

animalsmakes

themdounnaturalthingsitisa“deadend”weakens

the

speciesXiaoQing’sideasaboutcloningscientistsaredoingawonderfuljobmaybringpeople’sfavouritepetsbacktolifeproblemsbecauseitisanewscienceitmayprovidecuresforseriousillnessesListeningtaskonPage57.2Listentothetapeforthefirsttime.Keys:1O2O3F4O5F6O7F8O9O10F3Listentothetapeforthesecondtime.Keys:1.HewantstomakehismotherhappybykeepingherpetdogaliveforeverandhealsowantstotakethechancetoAmericaforholidaywhenthedogisbeingclonedthere.2.Frankdoesn’tagreewithcloningbecausehethinkscloningisveryexpensiveandithasmanymoralproblems.3.Billy’smotherisinfavourofcloning.SheissavingmoneytogotoAmericatohaveherpetdogclonedjustbeforeitdies.4.Variousanswersarepossible.ArgumentsforcloningpetsArgumentsagainstcloningpets1.Itisveryexpensivetocloneapet.2.Itisselfishbecauseitisanexcuseforaholiday.3.Itisselfishbecauseitmeansthestudentcanstudyabroadwithouthismothercomplaining.1.Itismoraltomakemymotherhappy.2.Itcanprovideanexcuseforaholidayabroad.3.MymotherwillneedherpetwhenIamaway.

Listentothetapeagain.Finishthefollowingchart.Workbook

ReadingtaskADEBATE“Medicalcloning”isamedicalcureusingcellsfromanembryotocureveryseriousillnesses.Theideaistotakehealthycellsfromapatientandcreatecopiesthatcanbeusedtorepairdamagedordiseasedpartsofthepatient.Intheory,medicalcloningwillbeveryusefulforcuringpatientsbutalargeamountofresearchisorganizedbythegovernmentandisstrictlycontrolled.BackgroundTheresearchcanCreateclonedhumancells(butnotolderthan14days)BeusedtobetterunderstandearlyhumandevelopmentBeusedtohelpwithgeneticdiseasesofoldageBeusedfortransplantsforincurableconditionswithouttheproblemoftransplantrejectionWhilehavingadebate,severalthings

toremember:

Thepersonwhoisleadingtheteamthatsupportsthetopicwillspeakfirst.Thepersonwhoisleadingtheteamthatdisagreeswiththetopicwillspeaknext.Thenotherpeoplecantaketurnstospeakinafreediscussion.Everyonemustlistenwhenotherpeoplearespeaking.

Noonecanberudetootherspeakersandmustalwaystalktothechairman.Thechairpersonwillstopanyonewhorepeatsargumentsthathavealreadybeenmade.Anyonecanreplytoanotherperson’sargument.TeamWhat’stheirargument?Tworeasonsfor/againstmedicalcloningAFormedicalcloningBAgainstmedicalcloningReadtheargumentsaboveandfillinthechart.(Page59)TeamA:tworeasonsformedicalcloningTocureseriousillnessesthathavenocureatthemoment2.tohelppeoplewhohavediseaseswhichmakethemgraduallylosetheirabilitytomoveeasilyortothinkTeamB:tworeasonsagainstmedicalcloningTomakethestemcellsthatwillcureanillnessofoneperson,youhavetoKillanotherhumanbeing.2.Scientistsareworriedabouttheefficiencyofthesystem.LanguagePointsItisasortofcompetitionwithachairperson

inchargetomakesureoffairplay.

它是一種競賽,由主持人負(fù)責(zé)確保競爭的公平。

incharge:

主管,領(lǐng)導(dǎo),負(fù)責(zé),處于領(lǐng)導(dǎo)或管理的職位

thesecurityagentinchargeattheairport.

機(jī)場保安部的負(fù)責(zé)人2.Afterthat,theissuecanbediscussedbyanyoneintheroomoneatatime.

然后,房間里的每個人都可以對問題進(jìn)行討論，每次只能有一人發(fā)言。

ata

time

依次,逐一,每次

Don’ttrytodoeverythingatonce,takeitabitatatime.不要什么事情都一塊干,要一次做一點(diǎn)。

Takethepillstwoatatime.每次服2粒。

at

one

time

一度,從前

AtonetimeIusedtogoskiingeverywinter.

我有一段時間每到冬天就去滑雪。

Atonetimetheymetfrequently.一度他們經(jīng)常見面。3.Ifyoubelievethathumanlifecomesintoexistenceassoonasthecellsstarttogrow,thenthepracticeofremovinghumanstemcellsfromanembryokillsit.

如果你認(rèn)為人的生命從細(xì)胞開始生長的時候就開始存在的話,那么從胚胎中提取人類干細(xì)胞的行為就是殺人。寫作任務(wù):Giveyouropiniononcloning寫作要求:注意記敘文的表達(dá)方式要寫明白自己的觀點(diǎn),層次要分明。寫作建議:本單元主要講述了“cloning”存在的問題以及人們的態(tài)度,文中可適當(dāng)就此進(jìn)行發(fā)揮。