ChapterTwo

PollutionFighters

LookandThinkWhatgoodaretrees?Wegetshadefromtrees.

Weget__________fromtrees.bettercitiesWeget_____________fromtrees.woodenhousesWeget__________fromtrees.furnitureWeget_____fromtrees.paperWeget_______fromtrees.pencilsWeget_____fromtrees.cokeWeget__________fromtrees.coffeebeansWeget______fromtrees.fruitsWhatdoyouknowabout…?Howlongdotheylive?Matchtheitemsontheleftwiththeaverageagesontheright.amicei70yearsbtreesii150yearsctortoisesiii40yearsdwhalesiv4000yearsepeoplev3yearsWhatdoesthewordmean?11.municatingwitha.attackingb.sendingmessage/signalstoc.joining2.purenotmixedwithotherthingsnotcomfortable4.runningtravelingworkingplaying6.hardlyanyquitealotalmostnonealargenumber1.sipa.madebynature,notbyman2.natureb.unpleasant3.oxygenc.drinkinsmallamounts4.hectaresd.alife-givinggasfoundinair5.warne.somethingproducedbychemistry6.achemicalf.areasof10000squaremeters7.nastyg.gaythatsomethingbadordangerousormayhappensDoyouknowthemeaning?FindthefactsTrees:1.livemuchlongerthanpeople;2.producerubber,wood,paper,nuts,beansandfruit;3.takeoxygenfromtheair;4.heattheair;5.arelikeairconditioners;6.cannotprotectthemselvesagainstinsects;7.cansharefoodandwaterwithoneanother;8.areindanger,mainlyfrominsects;TTTTFFFFreleasecoolcanpeople/humansAnswerthequestions1.Wegetsomeusefulthingsfromtrees,don’twe?Yes.Twoexamplesarewoodandrubber.2.Isittruethattreesdotwomainthingstotheair?

Yes.Theycoolitandcleanit.3.I’veheardthatonetreehasthepowerof15airconditioners.Isthatright?No.Onetreeshasthepoweroffiveairconditioners.4.Scientistsknowalotabouttrees,don’tthey?No.theyareonlynowbeginningtounderstandthem.5.Cantreesreallycommunicatewithoneanother?Yes.Forexample,ifinsectsattackatree,itcanwarmitsneighbors.6.Andcantheyreallyprotectthemselvesfrominsects?Yes.Theycanproduceachemicalthatmakestheirleavestastenasty.Answerthequestions7.Cantreeshelponeanother?Yes.Forexample.Theycanjointheirrootstogetherunder-groundandpassfoodandwateraround.

8.Isittruethat,everyyear,therearefewerandfewertreesintheworld?Yes.Thereasonisthatpeoplecutdownmillionsoftrees,butreplacehardlyanyofthem.ListeningListenandcompletethenoticebelowbyputtingonewordineachspace.Eightreasonsforhelpingtoplanttrees:1Treesmakestreetsmore________.2Treesmakestreetsless_____.3Treesmakeourair_____.4Treesmakeourair_____.5Treesmake_____tokeepusaliveand_______.6Treesprovideuswith_____thingslike_____and_____.7Treeshelpustofight________.8Treesarein_____.beautifulnoisypurercooleroxygenhealthyusefulfruitpaperpollutiondangerWhatarethey

doingnow?

Theyarehavingarestunderthetrees.

Theyareplanting

trees.

Theyarepicking

applesfromtheappletrees.Theyarecutting

trees.

DiscussionMakeadialogueaccordingtothemodel:A:Whatcanwedotofightpollution?B:Alwaysputlitterinlitterbins,andstopusingplasticbagsforshopping.A:Anythingelse?B:Stopfactoriesfromproducingunhealthygases,plantmoretreesinthestreets,andmakeclassroomslessnoisy.A:Whichwaysaremoreimportantandwhichwaysarelessimportant?B:Ithinkthat…..Model:WriteareportonfightingpollutionOurgroupthinksthatthemostimportantwaytofightpollutionisto_____.Thesecondisto_____.Thethirdisto_____.Thefourthisto_____.Thefifthisto_____.Everyoneinourgroupagrees/Mostpeopleinourgroupagreetothisarrangement.Writing:Homework:

Writeashortarticleaboutbuildinganewsitting-outareanearyourhomeforyourschoolnewspaper.

Nearmyhome,thereisa_______.Someworkersfinisheditlastweek.Iwatchedthemfrommyflat.First,__________(workers/arrive/lorry).Onthebackofthelorrythere_____(be/trees/brushes).Theworkers_____(dig/holes/ground).Second,they_____(plant/trees/holes).Next,theybroughtsomelargecontainers.They_____(put/earth/containers).Thenthey____(plant/brushes/containers).Next,they_____(pickup/allrubbish)and_____(sweep/area/neatly).Afterthat,they___