高二英语师大选择性必修一Unit-3-conservation-2课件.pptx

1、选择性必修一 Unit 3 Conservation(2)高二年级 英语The Sixth ExtinctionReading(2)Writing features Word choicesWriting methodsAdjectivesTheSixthExtinctionWriting style Teaching focusVerbphrasesWriting purposeRevisionExtinction?thirdfifthTheSixthExtinctionCausesEffectsSolutionsFocus on writing features Writing featu

2、res Writing methodsWriting style Writing purpose facts opinions/predictions reasons solutions Use different colored pens to highlight at least one example for each of the four elements listed below.Focus on writing features 1.In fact,over 90%of all species that ever lived are now extinct.2.Many scie

3、ntists say we are now entering the Earths sixth mass extinction.facts opinions/predictions reasons solutionsfactopinionFocus on writing features Focus on writing features facts:In the last 500 million years,there have been five times when life on Earth has almost ended.The“Great Dying”killed 90%to 9

4、6%of all species.The fifth event,which occurred 66 million years ago,caused the death of the dinosaurs.Human activity is causing species to die out 1,000 times faster than normal.numbersMany scientists say we are now entering the Earths sixth mass extinction.Scientists believe that up to three quart

5、ers of all species on Earth could die out.say,believe,think,in ones opinionopinions/predictions:Focus on writing features reasons:There is a long list of reasons why so many species are dying out:air and water pollution,forests being destroyed,factory farming and overfishing.Without forests,we would

6、 have no air to breathe and without clean water we would be unable to survive.reason,as,without sth.sb.would,cause,because,due to,since,forFocus on writing features solutions:We need to take steps to save endangered species,including setting up special areas where plants and animals can be protected

7、.We need to change how we work and travelWe also need to improve our farming methods.need to do,should doFocus on writing features numbersfactsscientists/experts sayreason,aswe need to solutionsreasonsopinions/predictionsthesixthextinctionexpositionFocus on writing features giving examples For examp

8、le,we need to take steps to save endangered species,including setting up special areas where plants andanimals can be protected.Focus on writing features Writing methodsciting ideas from experts or authorities giving examples using dataFocus on writing features Writing purposeto explain what the six

9、th extinction is and its effects to call on people to take action to prevent it from happeningFocus on writing features Focus on word choicesWord choicesAdjectivesVerbphrasesFocus on word choicesWord choicesAdjectivesVerbphrasesFocus on word choices Match the adjectives and nouns to make meaningful

10、expressions.entireendangeredsignificantnaturalmasssolarchangeresourcesextinctionspeciesenergyanimalsFocus on word choicesentireendangeredsignificantnaturalmasssolarchangeresourcesextinctionspeciesenergyanimals Use each expression to make a sentence.Focus on word choices1.Climate change is happening

11、right now.It is the most urgent threat facing our entire species and we should work together to stop the trend.2.Many natural parks have been built to protect endangered animals.3.We should make significant changes about the way we live.Focus on word choices4.If we try our best to recycle the wastes

12、,we can reduce pollution and conserve natural resources.5.During the fifth mass extinction event,dinosaurs disappeared on Earth.6.Solar energy is energy that comes from the sun and it can be used in many ways in our daily life.Focus on word choicesWord choicesAdjectivesVerbphrasesFocus on word choic

13、es1.Extinctions,where entire species are wiped out,are not unusual in our Earths history.(Para.1)wipe out to destroy or get rid of something completely be wiped out Focus on word choicesObservation:You can never wipe out the past.One dose of penicillin can wipe out the infection.Warmer sea temperatu

14、res have caused large areas of coral to be wiped out.Focus on word choices2.Experts say that it is not yet too late,if we take action now.(Para.4)take action to do something to deal with a problem Focus on word choicesObservation:Its time for us to get rid of these bad habits and take action to prot

15、ect the environment.To keep fit,you have to take action and do some exercises.Focus on word choices3.For example,we need to take steps to save endangered species,including setting up special areas where plants and animals can be protected.(Para.4)take steps to take measures set up to arrange,organiz

16、e or build Focus on word choicesObservation:The government must take steps to protect the rain forest.They set up many branches throughout the country.Focus on word choicesdie out be known as have effected depend on wipe outtake steps take action set up take care of In the last 500 million years,the

17、re have been five mass extinction events on Earth.In the third event,which 1 the“Great Dying”,90%to 96%of all species 2 .Of course,species died out due to many causes.But nowadays,human activity 3 all types of species that we 4 for living.is known asdied outhas affecteddepend ondie out be known as h

18、ave effected depend on wipe outtake steps take action set up take care of Focus on word choicesWe need to 5 to avoid the sixth mass extinction.We should 6 to save endangered animals and plants,and 7 special areas to 8 them before the next extinction comes that may 9 the entire species.take action/ta

19、ke stepsset uptake care ofwipe outtake action/take stepsWriting features Word choicesDataExamplesExperts/scientistsAdjectivesTheSixthExtinctionExpositionSummaryVerbphrasesHomework 1.Summarize the phrases in this passage and write them down in your notebook.2.Go online and search for some information about one of the environmental problems.Write a short passage about it.Underline the adjectives and verb phrases you use in your passage.Thank you!