高中英语人教版Unit2Cloning 校赛得奖

高中英语选修八Unit2CloningPeriod2learningaboutLanguage(1)TeachingGoals:

1.ToenableSstomasterkeyphrasesandexpressions.2.ToenableSstolearnhowtousethesewordsandexpressions.TeachingProcedures:Step1.LanguagestudyPurpose:TotrainSs’listeningabilityandlanguagecapacity.1.Listentothetextanddealwiththelanguagepointsinpairs.

MatchColumnAwithColumnB

ColumnA

ColumnB(1)straightforward

A.havingasignofillnessofthemindorthefeelings(2)

disturbed

B.entirely;inall;consideringallthings(3)

altogether

C.easytodoorunderstand(4)

forbid

D.makeoneselfresponsiblefor;promise(5)

undertake

E.notonreason(6)

arise

F.notallow(7)

arbitrary

G.becomeevident;appearSuggestedAnswers:

(1)C

(2)A

(3)B

(4)F

(5)D

(6)G

(7)

E

2.Ssaredividedintosmallgroupsandhaveadiscussion.Findoutdifficultwordsandexpressionsandwritethewordsandexpressionsonapieceofpaper.

3.GetSstodisplaytheirpapersbyprojectorandtickoutthemostusefulwordsandexpressions.

differfrom

undertaketodosth

castdown

beappropriateto

objectto

have/makeastrong/greatimpacton

beboundto

ontheassumptionsthat

4.ExplainsomeimportantsentencesforSs.(1)Italsohappensinanimalswhentwinsidenticalinsexandappearanceareproducedfromthesameoriginalegg.(2)CloningscientistswerecastdowntofindthatDolly`sillnessesweremoreappropriatetomucholderanimal.(3)AltogetherDollylivedforsixyears,halfthelengthofthelifeoftheoriginalsheep.(4)Ontheotherhand,Dolly`appearanceraisedastormofobjectionandhadagreatimpactonthemediaandpublicimagination.(5)SomecountriessuchasChinaandtheUKcontinuedtoaccumulateevidenceoftheabundantmedicalaidthatcloningcouldprovide.5.ExplainsomeimportantwordsforSs.(1)happenvi

(偶然地)发生；出现andpage

辨析：happen,befall,occur,takeplace与comeabouthappen,occur,befall,takeplace,comeabout五词都有“发生”之意，但有区别。

happen

使用最广，有偶然发生之意。

Befall指灾祸等的发生或出现。多用于书面语，并且往往暗示命运的作用。occur用法较正式，既可以指自然发生，也可以指有意安排。可用于具体的事物，也可用于抽象的事物。用于指具体事物时，可与happen互换（但happen后接不定式时，不能与occur互换。该词有“想起”的意思，这时不可同happen互换takeplace常可与happen,occur互换(以具体事物作主语时)，但较多地指有计划，按事先安排的进行的含义。引申用法可表示举行、进行的意思。comeabout往往注重事情发生的原因，常与how连用。注：以上五词均为不及物动词，无被动语态。

(2)disturbing(page12line2)烦扰的

I`vehadsomedisturbingexperience.●拓展：disturb打扰、使焦灼不安、扰乱I’msorrytohavedisturbedyou.Thedreamsodisturbedhimthathecouldnotsleep.Alightwinddisturedthesurfaceofthewater.(2)

castdown(page12line3)（多用于被动结构或作表语）沮丧，低沉，泄气Anyonewouldbecastdownbysuchnewsasthat.

Heseemedcastdownasaresultofhisfailuretofindwork.

Hewasverydowncastwhenhegottheexamresults.(3)

raise

(page12line8)举起，使起来，唤起，提高，筹款，养育●拓展：risevi

起立，升起，上涨，高耸，起义Step2.Consolidation.Purpose:Toconsolidatethewordsandphrasesinthetext.1.

AskSstocompletethefollowingsentencesusingsuitablewordsorphrases(1)Chinese______greatly_____Frenchinpronunciation.(2)He______tofinishthejobbyFriday.(3)Manypeople______

experimentationonanimals.(4)Youarenotlegally______

______answerthesequestions.(5)Ittookthemthreeyearsto______

______thedebt.(6)Anewoilcrisishas______.(7)Anyonewouldbe______

______bynewssuchasthat.SuggestedAnswers:

(1)differs…from

(2)undertook

(3)objectto

(4)boundto(5)payoff

(6)arisen

(7)castdown2.AskSstofinishEx3onP13andchecktheanswersinpairs.

3.AskSstofillinthebracketstocompletethepassagebelow.ThenletsomeSspresenttheiranswers.Manychallengesmustbeovercome_____(1)___(连词)"clonedorgan"transplantsbecomereality.Moreeffectivetechnologiesforcreatinghumanembryos,harvestingstemcells,andproducingorgans____(2)_____(介词)stemcellswouldhavetobe___(3)_____(develop).In2023,scientistswiththebiotechnologycompanyAdvancedCellTechnology(ACT)reported_____(4___(连词)theyhadclonedthefirsthumanembryos;however,theonlyembryotosurvivethecloningprocessstoppeddeveloping___(5)____(介词)dividingintosixcells.InFebruary2023,scientistswiththesamebiotechcompanyreportedthattheyhad___(6)_____(success)transplantedkidney-likeorgansintocows.Theteamofresearcherscreated___(7)___(冠词)_clonedcowembryobyremovingtheDNAfromaneggcellandtheninjectingtheDNAfromtheskincellofthedonorcow'sear.Sincelittleis_____(8)____(短语动词)manipulating(控制)embryonicstemcellsfromcows,thescientistsletthe___(9)_____(clone)embryosdevelopintofetuses.Thescientiststhenharvestedfetaltissuefromtheclonesandtransplanteditintothedonorcow.Inthethreemonthsofobservation___(10)_____thetransplant,nosignofimmunerejectionwasobservedinthetransplantrecipient.SuggestedAnswers:(1)before

(2)from

(3)developed

(4)that.

(5)after

(6)successfully

(7)a

(8)knownabout

(9)cloned

(10)followingStep3.Homework1.AskSstoreviewthelanguagepointsinthisperiod.2.AskSstofinishthefollowingexercises.(1)AskSstouse“happen,occur,befall,takeplace,comeabout”tofillthefollowingblanks.①Whendidtheaccident_________?②Ourschoolsportsmeetingwill________nextweek.③Howdidthequarrel__________?④I