1、zUnit 3ConservationLesson 1-(1)zPart 1Lead inzLead inFirstly,lets watch the video together.zLead inMore and more animals died out.zLead inHow much do you know about extinction?Choose the option based on your knowledge.zDiscuss with your partner!Lead inzLead inWell find the answers from todays passag
2、e.zPart 2Words and Expressionszdie out消失；绝迹，灭绝e.g.How did the dinosaurs die out?Words and Expressionszspecies/spiiz/n.物种，种e.g.There are no fewer than 100 different species in the area.Words and Expressionszwipe/wap/vt.擦；试e.g.Wipe the surface with a damp cloth.Words and Expressionswipe out 彻底灭绝zunusu
3、al/njuul/adj.异常的；不平常的e.g.An unusual noise arrested his attention.Words and Expressionszmass/ms/adj.大量的e.g.Ive got masses of work to do.Words and Expressionszvaried/verid/adj.各种各样的，形形色色的e.g.Peoples reaction to the film has varied greatly.Words and Expressionszasteroid/strd/n.小行星e.g.Asteroid lies betw
4、een Mars and jupiter.Words and Expressionszdecrease/dkris/n.减少；减少的量vi.&vt.减少e.g.The number of new students decreased from 210 to 160 this year.Words and Expressionszblame/blem/vt.责怪，职责e.g.Its not good enough just to blame the unruly children.Words and Expressionsbe to blame 把归咎于zaffect/fekt/vt.影响e.g
5、.The new law will affect us all,directly or indirectly.Words and Expressionszbe at risk处境危险，受到威胁e.g.He had shown himself careless of personal safety where the life of his colleagues might be at risk.Words and Expressionszendangered/ndendd/adj.濒危的e.g.That one mistake seriously endangered the future o
6、f the company.Words and Expressionszsolar/sl(r)/adj.太阳光（能）的e.g.Solar panels trap energy from the sun.Words and Expressionszhatch/ht/vi.&vt.(使)孵化e.g.The eggs are about to hatch.Words and Expressionszrestore/rst(r)/vt.(使)恢复e.g.The police are trying to restore public order.Words and ExpressionszPart 3R
7、eading comprehensionzLets read!Read and thinkzLets read!Read and thinkzRead and thinkAfter reading,lets check Activity 1.zRead and thinkRead the text.Complete the notes.Then talk about the different aspects of extinctions.zRead and thinkLets check.Extinctions,where entire species are wiped out,are n
8、ot unusual in our Earths history.zRead and thinkLets check.over 90%of all species that ever livedzRead and thinkLets check.These include the third mass extinction,known as the”Great Dying”,which killed 90%to 96%of all species.And the fifth event,which occured 66 million years ago,caused the death of
9、 the dinosaurs.zRead and thinkLets check.The reasons:volcanic eruptions,asteroids hitting the Earth from space,changes in sea levels,the decrease of the oxygen conten of the sea and global warming.zRead and thinkLets check.We have to change the way we live.For example,we need to take steps to save e
10、ndangered species,including setting up special areas where plants and animals can be protected.We need to change how we work and travel by using cleaner,more natural sources of energy.We also need to improve our farming methods to reduce water,air and land pollution.zRead and thinkSo,what are the as
11、pects of extinctions?.zRead and thinkRead again.Answer the questions.zRead and thinkLets check.1 What did scientists find out in 2015?They found that human activity is causing species to die out 1,000 times faster than normal.zRead and thinkLets check.2 Why does the writer think the sixth mass extin
12、ction will come?Because human activity has negatively affected all other species on Earth,including aniamls and plants.zRead and thinkLets check.3 Why does the writer believe well probably die out if 75%of the Earths species die out?Because our world and our lives depend on the balance in nature bet
13、ween animals and plants.zRead and thinkLets check.4 What did people do in the case study to protect black robins?Which claim(s)did the case study support in the text?People protected Old Blues eggs,helped them to hatch,and took care of the chicks.People are restoring their habitats and removing pest
14、s like mice and cats from the islands where they live.What we can do to protect the sixth extinction.zGroup work1.Use different coloured pens to highlight at least one example for each of the four elements listed below in different colours.Then find out(1)what typical language is used?(2)What text t
15、ype is this piece of writing?(3)What is its communicative purpose?factsreasonsopinions/predictionssolutionszGroup workfactsPossible answerszGroup workreasonsPossible answerszGroup workopinions/predictionsPossible answerszGroup worksolutionsPossible answerszGroup work2.What ways of argument does the writer use to convince readers?Are you convinced?Why or why not?zGroup workciting ideas from experts or authoritieszGroup workgiving exampleszGroup workusing datazPart 4HomeworkzRecite the key words and expressions.Read the article again and grasp the main idea.Homework
