高中英語人教版Unit2Cloning 校賽得獎

高中英語選修八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)發(fā)生；出現(xiàn)andpage

辨析：happen,befall,occur,takeplace與comeabouthappen,occur,befall,takeplace,comeabout五詞都有“發(fā)生”之意，但有區(qū)別。

happen

使用最廣，有偶然發(fā)生之意。

Befall指災(zāi)禍等的發(fā)生或出現(xiàn)。多用于書面語，并且往往暗示命運(yùn)的作用。occur用法較正式，既可以指自然發(fā)生，也可以指有意安排。可用于具體的事物，也可用于抽象的事物。用于指具體事物時，可與happen互換（但happen后接不定式時，不能與occur互換。該詞有“想起”的意思，這時不可同happen互換takeplace常可與happen,occur互換(以具體事物作主語時)，但較多地指有計劃，按事先安排的進(jìn)行的含義。引申用法可表示舉行、進(jìn)行的意思。comeabout往往注重事情發(fā)生的原因，常與how連用。注：以上五詞均為不及物動詞，無被動語態(tài)。

(2)disturbing(page12line2)煩擾的

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

castdown(page12line3)（多用于被動結(jié)構(gòu)或作表語）沮喪，低沉，泄氣Anyonewouldbecastdownbysuchnewsasthat.

Heseemedcastdownasaresultofhisfailuretofindwork.

Hewasverydowncastwhenhegottheexamresults.(3)

raise

(page12line8)舉起，使起來，喚起，提高，籌款，養(yǎng)育●拓展：risevi

起立，升起，上漲，高聳，起義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)___(連詞)"clonedorgan"transplantsbecomereality.Moreeffectivetechnologiesforcreatinghumanembryos,harvestingstemcells,andproducingorgans____(2)_____(介詞)stemcellswouldhavetobe___(3)_____(develop).In2023,scientistswiththebiotechnologycompanyAdvancedCellTechnology(ACT)reported_____(4___(連詞)theyhadclonedthefirsthumanembryos;however,theonlyembryotosurvivethecloningprocessstoppeddeveloping___(5)____(介詞)dividingintosixcells.InFebruary2023,scientistswiththesamebiotechcompanyreportedthattheyhad___(6)_____(success)transplantedkidney-likeorgansintocows.Theteamofresearcherscreated___(7)___(冠詞)_clonedcowembryobyremovingtheDNAfromaneggcellandtheninjectingtheDNAfromtheskincellofthedonorcow'sear.Sincelittleis_____(8)____(短語動詞)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