Unit2 语言点课件--高中英语人教版选修八.pptx

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1、Twice as good?Doubletrouble?Cloning is a way of making an _ copy of another animal or plant.It can be used to clone plants and animals.Cloning plants is _ while cloning animals is very _.However,the determination and patience of the scientists _ with the birth of Dolly.But then came the _ news that

2、Dolly had become seriously ill.The fact that Dolly lived six,half the _ of the life _ the cloning scientists.Dollys appearance _ a storm of _ and had a great _ on the media and the public imagina-tion.Scientists still wonder _ cloning will help or harm us and where it is leading us.exactstraightforw

3、ardcomplicatedpaid offdisturbingcast downraisedlengthimpactwhetherobjections Advantages:medical research;more quantities of plants;new plant species;save endangered animalsprovide cure for serious illness Problems:develop illness of older animals;die younger;evil leaders;moral objection;1.Cloning is

4、 a very complex,difficult high-tech,there exists lots of unpredictable change especially when the technology hasnt been fully developed.2.A lot of peoples personality,belief,etc.are the result of the experiences they have and the environment they grow up in.so a clone may be similar to the original

5、one but would still differ mentally.3.Whether a clone would be treated with the same rights as any human remains a problem.Cloning is a double-edged swordAnyway,whether cloning is helpful or harmful depends on _ _ whether we humans develop and use it in a wise way.No matter how advanced the technolo

6、gy is,there is still something that can never be cloned,including love,friendship,experience,etc.Expressions:produce commercial quantities of plantsfollow the progress of the first clonemake corrections in the research procedureraise a storm of objectionshave a great impact on the media imaginationa

7、ttain ones ambitionreform the legal systemsaccumulate evidence of the abundant medical aidSentence appreciation:Cloning happens in animals when twins identical in sex and appearance are produced from the same original eggs.At last the determination and patience of the scientists paid off in 1996 wit

8、h a breakthrough.Cloning scientists were cast down to find that Dollys illnesses were more appropriate to a much older animal.Other countries like China and UK,continued to accumulate evidence of the abundant medical aid that cloning could provide.1).sb.differ with sb.on/about sth.与某人在上意见不同 2).diffe

9、r in 在在方面不同方面不同 3).differ from 与与不同不同1.differ vi.different,differencevi.different,differencebe different from sb.in sth.tell the difference betweenanddistinguish between A and Bdistinguish A from BModern airplanes differ from early ones in many aspects.The husband differs with his wife on who is to

10、take charge of the money.2.owe v.v.owe sb.sth./owe sth.to sb.欠（债、人情）欠（债、人情）owe sb.a favor/an explanationowe sb.an apology 把把归功于归功于He owed his success more to hard work than to luck.owing to 因为，由于因为，由于3.undertake vt.undertook,undertakenvt.undertook,undertakenundertake a task/responsibilityAccording t

11、o the constitution,it is compulsory to undertake military service.He undertook to pay the money back in one month.4.(be)cast down cast a net cast a shadow(promise/agree to do)5.pay off I will have paid off the debts by this time next year.His efforts paid off when the experiment proved successful.pa

12、y for your carelessness pay a price for 为付出代价pay back 偿还pay sb.back 报复 6.object v.objection We object to being treated like this.He has a strong objection to smoking at home,especially with children present.have/take/raise an objection toobjective adj.客观的 subjective 主观的oppose sth./be opposed to7.for

13、bid v.forbade/forbad,forbiddenforbid sth./doingforbid sb.to do sth.forbid sb.sth.He forbade his children sweets because he didnt want their teeth to be ruined.the Forbidden City8.accumulate vt/vi.accumulation他因努力工作而积蓄了一笔财富。他因努力工作而积蓄了一笔财富。He _ by hard work.我不在期间灰尘积聚了起来。我不在期间灰尘积聚了起来。_ during my absenc

14、e.accumulated fortuneDust accumulated同位语同位语：当一个概念词在前，后面的词、词组或者句子是在解释、说明前者时，后者就是前者的同位语。Mr.Smith,our new teacher,is very kind to us.All the countries,big or small,are equal.Then came the disturbing news that Dolly had become seriously ill.Translation:The UN is supposed to undertake the responsi-bility for keeping global peace.For us senior three students,believing our hard work will pay off can strengthen our confidence.Whoever hears such bad news will be cast down.I really object to being charged for parking.Doctors have made a breakthrough in the treatment of lung cancer.