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Unit 3 Science versus naturePeriod one Welcome to this UnitTeaching Aims:Enable the students to know something about cloning, and give their own opinions about cloning.Help the students learn how to describe the advantages and disadvantages of human cloning with the targetlanguage.Teaching important and difficult points:Talk about cloning and human cloning.How to describe the advantages and disadvantages of human cloning.Teaching Procedures Step1. Lead-inIn the last unit, we learned something about theenvironment. Now our earth is faced with a lot of problems.Q1:what are the problems? (复习一下第二单元所学的知识，为下文做铺垫) Water pollution, air pollution, rubbish,deforestation, desertification, and sandstormQ2:Let’s have a competition. Please think that what we should do to protect our environment.The more the better. One measure is worth 10 points. (通过竞赛的形式激发学生的兴趣。
Unit 3 Science versus nature教案Unit 3 Science versus nature教案 Module5 Unit 3 Science versus nature语言点 Reading 1. On the other hand, some scientists point out that if you clone an embryo, you can produce valuable human tissues---such as bone or lung tissue―that could be used to save human lives. On the other hand, many people, including some scientists, disagree and are afraid that, if mankind toys with nature in this way, we may be on our way to producing a real-life Frankenstein’s monster. (1) on (the) one hand…on the other hand…一方面…另一方面… On one hand, rapid development of the economy will improve the living conditions of people. On the other hand, it will speed up environmental destruction. (短语) at hand 在手边，在附近 by hand 用手；亲手 in hand 手头现有的，正在进行，在处理中 hand in 交上来 hand out 分发 hand over移交 hand down 把…传下去 hand in hand手拉手(2) point at，point to和point out的意思都与“指”有关，但还是有一定区别。
模块五 Unit 3 Science versus nature[考点透视]I 重点短语in favor of the proposal / in favor of free trade / in favour of doing sth.in favor of sb. = in one’s favor1. favor in favor with sb.do sb. a favor = do a favor for sb.do sb. the favor to do sth.ask sb. a favor = ask a favor of sb.point out sth.vi. point out that …..point atpoint to2. point a point of viewtake one’s point.n.to the pointat the point ofon the point of3. interfere：interfere in / with sb. / one’s affairs …praise sb. for sth.vt. 类似词：punish / reward / scold sb. for (doing) sth.4. praise praise sb. highlya praise of sb. / sth.n. in praise ofsing high praise for……the intention to do sth. / of doinguc. without intention / by intention5. intention by intention / with good intentionvt. intend: intend to do sth. / intend sb. to do sth. / intend sth. for … = sth.be intended for … / intend sth. to do / be / as …adopted a new method.6. adopt adopt sb. as sb. / an adopted son / an adoptive fatherbe adopted from ….n.：adoptionconstruct a building / a bridge over the river.7. construct construct a theorya well-constructed noveln.：construction：sth. be under constructionput an end to sth. = bring sth to an end = sth. e to an endn. make ends meetin the end / at the end of …8. end end sth.v. end up as chairman / end up in prison.ends up doing sth.end in = result in；end (up) withn. do figures / be good at figures； a public figure； have a good figurefigure sth.9. figure v. I figure that ….figure outinvolve sb. in / with sth.10. involve an involved problem / be involved in (with) sth.n. involvementvt. Sth. cost sb. money / time.11. cost Sth. cost sb. sthn. reduce the cost；at the cost of…；at all costs / any costurge sb. to do sth.vt. urge sth. on / upon sb.urge that…12. urge n.：an / the urge to do sth.n.：urgency：a matter of urgency / in time of urgencyadj.：urgent： an urgent callrather than：= instead of13. other than = exceptor rather = to be more exactII 重点句型1. On the one hand, some scientists point out that if …. On the other hand, many people ….2. While cloning human embryos is illegal in many countries, ….3. On a personal note, cloning would totally change my life.4. Most of the time it turns out that humans are not really profiting when …..[题例精析][例1] Jack almost fell off the cliff, but managed to _____ until help came.A. keep onB. catch onC. count onD. hang on[易错点悟]区分动词短语。
