Unit 5 Understanding ideas（ppt课件）-2022新外研版（2019）《高中英语》选择性必修第一册.pptx

1、Unit 5 Revealing natureto make known something that was previously secret or unkown 1 What species do you recognise in the picture?1 What species do you recognise in the picture?2 What factors can cause the process of evolution?2 What factors can cause the process of evolution?The ever-changing envi

2、ronment of nature;The ever-changing environment of nature;environmental changes;environmental changes;population immigration;population immigration;genetic mutation;genetic mutation;cultural preferences.cultural preferences.lower forms of life lower forms of life higher forms of life higher forms of

3、 life evolve-evolve-evolutionevolutionlead-inlead-inWho Who made this discovery?made this discovery?What What is the discovery?is the discovery?How How did he make the discovery?did he make the discovery?Charles Robert DarwinCharles Robert DarwinThe theory of evolutionThe theory of evolutionThe Orig

4、in of SpeciesThe Origin of SpeciesPre-readingPre-readingI Introduction ntroduction On his journey On his journey G Generate ideas enerate ideas Look for more evidenceLook for more evidenceDevelop ideas Develop ideas Propose a theoryPropose a theoryConclusionConclusionHowHow he made the discovery.he

5、made the discovery.Fast-readingFast-reading14235produceproduceput forward put forward 1.Darwins interest in various living things made him a great naturalist.2.Darwins journey on the Beagle inspired his Theory of Evolution.3.Darwin went on a journey to confirm his theory that humans had evolved over

6、 time.A Journey of DiscoveryFast-readingFast-reading1.What is the function of para 1?A.To praise Charles DarwinB.To arouse readers interestsC.To introduce Charles Darwins achievementsD.To inform readers of Charles Darwins lifeCareful-readingCareful-reading2.Which of the following statements about Ch

7、arles Darwin is True?A.Darwin wanted to benefit from visiting little-known countriesB.Darwin quitted medical school due to his lack of moneyC.Darwins father was satisfied with DarwinD.Darwins made a significant scientific discovery thanks to his adventures on the ship BeagleIntroduction Careful-read

8、ingCareful-reading various living things in their natural various living things in their natural environments and samples of the plants environments and samples of the plants and animals he had collectedand animals he had collected very similar to each other very similar to each otherCareful-reading

9、Careful-reading come to exist come to exist Maybe animals evolved as they Maybe animals evolved as they adapted to their changing adapted to their changing environmentsenvironments？premisepremise(前提前提)All species were All species were created by created by _ Some species of Some species of animals w

10、ere very animals were very _ to each other._ to each other.The environment was The environment was _._.conclusionconclusionAll species had All species had appeared on Earth appeared on Earth _,_,and had not and had not _ since._ since.Maybe animals Maybe animals _ as they _ as they _ their _ their c

11、hanging environments.changing environments.GodGodat the same timeat the same timechangedchangedsimilarsimilarchangingchangingevolvedevolvedadapted toadapted toCareful-readingCareful-reading that there was a difference between the finches that there was a difference between the finches on each of the

12、 islands.on each of the islands.had evolved according to what food was had evolved according to what food was available on that particular island.available on that particular island.1.1.In which aspect were these birds different?In which aspect were these birds different?2.2.What caused their differ

13、ences?What caused their differences?BeaksFood available on that particular islandCareful-readingCareful-reading had evolved from a had evolved from a common ancestor,common ancestor,which had arrived on which had arrived on the islands a long time the islands a long time beforebeforeslowly evolved i

14、nto slowly evolved into many new species.many new species.A _ ancestor_ into different speciescommonevolveCareful-readingCareful-reading had evolved from had evolved from lower forms of life.lower forms of life._ to believe people were _ to believe refusedshockedstartedDevelop Develop IdeasIdeasProp

15、ose a Propose a theorytheoryLook for Look for more evidencemore evidenceGenerate Generate IdeasIdeasOn his On his journeyjourneystudied _ and noticed some species were very _ to each otherAnimals _ as they adapted to their _ environments_ of finches _Species_The Theory of _various living thingssimil

16、arevolvedchangingBeaksevolvedevolvedevolutionA Journey of DiscoveryCareful-readingCareful-readingJourney on the _Journey to discover _The Theory of Evolutionship BeagleA Journey of DiscoveryConclusionDarwin was a determined man.He had strong curiosity and interests Darwin was a determined man.He had

17、 strong curiosity and interests in science and was good at thinking and making discoveries.in science and was good at thinking and making discoveries.1.1.Why were many people“shocked”by Darwins theoryWhy were many people“shocked”by Darwins theory？At that time,many people believed that all species ha

18、d appeared on At that time,many people believed that all species had appeared on Earth at the same time and had not changed since,but Darwins theory Earth at the same time and had not changed since,but Darwins theory proposed that living things,including humans,had evolved from lower proposed that l

19、iving things,including humans,had evolved from lower forms of life,which,as a result,shocked many people.forms of life,which,as a result,shocked many people.2.What kind of person was Darwin according to the passage?2.What kind of person was Darwin according to the passage?Post-readingPost-reading12-

20、5The text is organized in order of_.Para_Para_Para 6-7timeBefore the journeyDuring the journeyConclusionConclusionasked himself a question(generated an idea)asked himself a question(generated an idea)answered the question(developed an idea)answered the question(developed an idea)published the book(proposed a theory)published the book(proposed a theory)startedstarted hishis journeyjourneyConclusionConclusion