高二英語(yǔ)外研選擇性必修一Unit-5-Revealing-nature-課件2

選擇性必修一Unit5Revealingnature(2)

高二年級(jí)英語(yǔ)選擇性必修一1Usinglanguage

ListeningUsinglanguage

Listening2Learningobjectives1.Getthemainideaofthepassageandlistexpressionsrelatedtobiodiversitybyreading.2.Getthemainideaofthelisteningmaterialandwritedownusefulexpressionsrelatedtothetopicofcellsandbacteria.3.Actouttheconversationaboutcellsandbacteria.4.Makeanewconversationaboutbiodiversity.Learningobjectives1.Getthe3Whatisbiodiversityinyourmind?Whatisbiodiversityinyourm4ReadingforinformationThemainideaofthepassage:Itintroducesthelargestanimalspecies:thebluewhaleandthetoughestspecies—thewaterbearandtheircharacteristics.ReadingforinformationThemai51.Whatspeciesarementionedandwhatisspecialaboutthem?2.Whatotherunusuallifeformsdoyouknowof?Readingforinformation1.Whatspeciesarementioned61.Whatspeciesarementionedandwhatisspecialaboutthem?Earthishometomillionsofdifferentspecies.Somecanbeverysmall,likebacteriaandviruses,whicharesosmallthatwecannotseethemwithonlyoureyes.Bycontrast,thelargestanimalspeciessofarfoundonourplanetisthebluewhale,whichcangrowuptoalmost30metresinlengthandweighover130,000kilos.Readingforinformation1.Whatspeciesarementioned71.Whatspeciesarementionedandwhatisspecialaboutthem?Thetoughestspeciesisprobablythewaterbear.Thistinyorganismcansurvivetemperaturesfrom150℃toabelowfreezing-272℃.Tobestsurviveintheirenvironment,eachspecieshasdevelopeditsownuniquephysicalcharacteristics.Readingforinformation1.Whatspeciesarementioned81.Whatspeciesarementionedandwhatisspecialaboutthem?Twospeciesarementioned:Thebluewhaleandthewaterbear.Thebluewhaleisthelargestanimalspeciesonearth,whichcangrowuptoalmost30metresinlengthandweighover130,000kilos.Thewaterbearisthetoughestspecies,whichcansurviveinextremetemperature.Readingforinformation1.Whatspeciesarementioned92.Whatotherunusuallifeformsdoyouknowof?Vipers,elephantsandpandasareveryunusual.Youcanhaveyourownanswers.Readingforinformation2.Whatotherunusuallifefor10AmapoftheGalapagosIslandsAmapoftheGalapagosIslands11

Tortoises,mangrovesandiguanasarementioned.Findoutthespeciesmentioned.Tortoises,mangroves12ancestorscientificbenativetoprimitivehabitatappearancebehometoecosystemCompletetheparagraphs.ancestorscientific13TheGalapagosIslandsarerenownedworldwidefortheiruniquebiodiversity.TheGiantTortoiseReserveonSantaCruzseveralspeciesofgianttortoisethattheGalapagosIslands.TheislandisalsohometotheCharlesDarwinResearchStation,wherestudiesarecarriedout.ishometoarenativetoscientificCompletetheparagraphs.TheGalapagosIslandsare14MangrovesareoneofthecoastalplantsthatgrowonIsabela.Theyserveastheforvariousbirdsandfish,andareveryimportanttothe.habitatsecosystemCompletetheparagraphs.Mangrovesareoneofthec15IguanascanbefoundonSanCristobal.Theyhaveaveryspecial,withcomb-likespinesontheirback.Thereisevidencethatallthedifferentiguanashavedevelopedfrommoreonesandshareacommon.appearanceprimitiveancestorCompletetheparagraphs.IguanascanbefoundonSa161.Theexistenceofalargenumberofdifferentkindsofanimalsandplantswhichmakeabalancedenvironment.2.Thesimplestandsmallestformsoflife.3.Oganics.biodiversityorganicmattersbacteriaUsefulWords1.Theexistenceofalargenu174.Thesysteminyourbodythatproducessubstancestohelpitfightagainstinfectionanddisease.5.Alltheplantsandlivingcreaturesinaparticularareaconsideredinrelationtotheirphysicalenvironment.6.Thesmallestunitoflivingmatterthatcanexistonitsown.cellimmunesystemecosystemUsefulWords4.Thesysteminyourbodytha18Whenyoulistentothepodcast,itisimportanttofindoutthepurposeofit.Beforelistening,thinkaboutwhattopicsmightbediscussed.Themainideaofthepassageis:

somethingaboutcellsandbacteria.ListeningformainideaWhenyoulistentothepodcast191.Biodiversityisimportant.2.Bacteriaarealwaysharmfultohumans.3.Somespeciesofbacteriaareusedinfoodproduction.4.Manyspeciesofbacteriarecycledeadorganicmatter.5.Ourimmunesystemsareabletofightoffallgerms.Listenandchoosethestatementsthataremade.1.Biodiversityisimportant.L20Duringthepodcast,listencarefullytoeachquestionandtrytounderstandthemainideaswithintheresponses.LearningtolearnDuringthepodcast,listencar211.Biodiversityisimportant.2.Bacteriaarealwaysharmfultohumans.3.Somespeciesofbacteriaareusedinfoodproduction.4.Manyspeciesofbacteriarecycledeadorganicmatter.5.Ourimmunesystemsareabletofightoffallgerms.NFNTTListenandchoosethestatementsthataremade.1.Biodiversityisimportant.N22

Asyoulisten,makenotesofkeyinformationsuchaskeywords,numbersandfacts.Thiswillhelpyouunderstandandremembertheinformationyouhear.LearningtolearnAsyoulisten,makenotes23Everylivingthingis1.Theyarelike2.Inthehumanbodythereareabout3humancellsandaround4bacteriacells.Mostbacteriainthehumanbodycan5.Inthefoodproductionprocess,bacteriacan6deadorganicmatter.ListeningfordetailedinformationListeningfordetailedinforma24

Everylivingthingis.Theyarelike.Inthehumanbodythereareabouthumancellsandaroundbacteriacells.Mostbacteriainthehumanbodycan.Inthefoodproductionprocess,bacteriacandeadorganicmatter.madeupofcellsbricksthatareusedtobuildhousesbreakdownthirtytrillionhelpdigestionthirty-ninetrillionListeningfordetailedinformationmadeupofcellsbricksthata25

Doyouknowabout...?Haveyouheardof...?Bytheway,…Infact,...Actually,....Speakingofwhich,...TheusefulexpressionsDoyouknowabout.26Checkingbackgroundknowledge

Doyouknowabout...?Haveyouheardof...?Addinginformation

Bytheway,…Actually,....Infact,....Speakingofwhich,...TheusefulexpressionsCheckingbackgroundknowledgeT27Student’sworkStudent’swork28SpeakingSpeaking29CriteriaPronunciationandintonation30’Language(usefulexpressions)30