Unit2SavingtheEarthTopic3Whatcanwedoathometoprotecttheenvironment?SectionDLearningaims一、掌握以下單詞：remove,replace,dry,insect,bite等。二、通過閱讀了解有關(guān)植樹造林的困境與解決之法。三、能夠根據(jù)不同的閱讀目的運(yùn)用閱讀策略獲取信息。四、引導(dǎo)總結(jié)連接詞but,and,or,while的區(qū)別和用法。GrammarCompoundSentenceRecyclingcanprotecttheenvironment,_______itcansavemoney,too.Somethingswehavedonearegoodfortheearth_________somearebad.Weshoulddoeverythingtoprotectit,________we’llbepunishedandloseourhome.Actionscanspeak,_______wordscan'tdoit.andwhileorbutGrammar連接詞or,and,but和while的用法連接詞or,and,but和while的用法并列連詞作用主要連詞表并列and（和，而且)aswellas(也,和...一樣)both…and/

notonly…butalso(不但...而且)neither…nor(即不..也不..)...表選擇or

(或者;否則)either…or(要么...要么)等表轉(zhuǎn)折but（但是)however（然而，可是）while(然而-表對(duì)比)not...but(不是...而是)...表因果for(由于）because(因?yàn)?so(因此）...Exercises(

)1.Helpotherswheneveryoucan,_____you’llmaketheworldanicerplacetolivein.A.orB.andC.butD.while(

)2.Crosstheroadcarefully,________you’llkeepyourselfsafe.A.soB.orC.butD.and(

)3.Hurryup,________you’llbelatefortheconcert.A.or B.so C.butD.andBDA(

)4.---TellussomethingaboutCanada,OK?---I’msorry._____Jack___Ihaveeverbeenthere.A.Either,orB.Notonly,butalsoC.Both,andD.Neither,nor(

)5.IalwaysenjoyvisitingLondon,______Iwouldn’tliketolivethere.A.becauseB.soC.butD.and(

)6.Therearemanysportsloversinhisoffice.Someloveclimbing,____othersenjoyswimming.A.Or B.forC.while D.so(

)7.___she___Iknowhistelephonenumber,becauseithasbeenchanged.A.Both;andB.Either;orC.Notonly;butalsoD.Neither;norDCCDFunctionsWouldyouliketobea__________person?First,yououghtto_________theelectricitywhenyouleavearoom.__________saidthandone.Actionspeak_________thanwords.EvenGermanexpertsthink_________ofthetechnologyofChina'shigh-speedtrain.greenershutoffEasierlouderhighlyTrees'functionsB.Alotofwatercanbesavedbyforests.A.Treescanfromblowingtheearthaway.fromwashingtheearthaway.stopthewindC.TreescanstopthewaterReviewTreescanremove______________fromtheairandthenmake____________.carbondioxideoxygenTreesarethe_________oftheearth.Theearthcannotbreathe__________(with)them.lungswithoutInordertodevelop_________(rapid),peoplecutdown______numberofwoodtobuildhouses.lungsaManyvolunteersaroundtheworldareworkingtoplantnewtrees._________,theyfacemanydifficulties.HoweverFast-readingDecidewhichofthefollowingsentencesistrue“T”orfalse“F”.1a1.Forestsaretheheartsoftheearth.()2.Inmanycountries,forestswerecutdowntomakemoney.()3.Theseplantersfacequiteafewdifficultieswhenplantingnewtrees.()4.Eventhoughplantingisverydifficult,planterssucceedatlast.()FFTTFast-readingThemainideaofthepassageis___________.A.Forestarethelungsoftheearth.B.Weshouldplantmoretreestoprotecttheearth.C.Treeplantersarechangingtheworld.D.Treeplantersfacemanydifficulties.Careful-readingReadthepassageandanswerthequestions.2.Whatdifficultiesdotreeplantersfacewhentheyplanttrees?1.Howdoyouunderstand"Forestsarethelungsoftheearth"?Forestscanremovecarbondioxidefromtheairandmakeoxygen.1acarrysmalltreesdifficulties1.weather2.insects3.bags4.workplaceCareful-readingReadthepassageandanswerthequestions.1a3.Whatwillhappenifwedonotplantnewforests?4.Wouldyouliketobeatreeplanterwhenyouareolder?Whyorwhynot?Theforestswillbecomesmallerandsmallerandwecannotbreathewithoutthem.Yes,becauseplantingtreescanprotecttheenvironment.①Forestsarethelungsoftheearth.Withoutthem,itcannotbreathe.Itneedsitsforeststoremovecarbondioxidefromtheairandtomakeoxygen.Inmanycountries,suchasNewZealand,Canada,andBrazil,forestswerecutdowntoprovidewoodtobuildhouses.Manyvolunteersaroundtheworldareworkingintheirholidaystoplantnewtreestoreplacethem.②Theyfacemanydifficultieswhenplantingnewtrees.Theweathermaybeveryhotanddryoritmaybeverycoldandwet.Thereareoftenmanyinsectsthatbitetheseplantersontheirlegs,arms,andfaceswhiletheywork.Theycarryheavybagsofsmalltrees,andworkinginthemountainscanbedangerous.③Chinesevolunteershavehelpedplantlotsoftreesaroundtheworld.Theyhavebigplanstogrowmoreforestsandhaveusednewtechnologiestoreachtheirgoals.Byplantingmillionsoftreeseveryyear,theyarenotonlymakingtheirownenvironmentbetterbutalsohelpingthewholeworld.ThisshowsthatChinesereallycareabouttheearth.1.Doyourecyclenewspapersorcans?A.Often.(2)B.Seldom.(1)C.Never.(0)2.Whatdoyouusuallytake?A.Abath.(0)B.Ashower.(2)3.Whenyouhaveashortjourney,howdoyouusuallygothere?A.Walkorrideabike.(3)B.Gobycar.(0)C.Gobybus.(2)4.Whatdoyouusuallydowhenyouseeotherslittering?A.Stopthem.(2)B.Pickthelitterup.(1)C.Donothing.(0)5.Howoftendoyouusepapertowels?A.Often.(0)B.Seldom.(1)C.Never.(2)6.Howoftendoyoueatfastfood?A.Often.(0)B.Seldom.(1)C.Never.(2)7.Whattypeofbagsdoyouuseforshopping?A.Basketsorclothbags.(3)B.Reusedplasticbags.(1)C.Newplasticbags.(0)8.Howoftendoyouturnoffthelightswhenyouleavearoom?A.Nearlyalways.(2)B.Seldom.(1)C.Never.(0)FindingtheGreenestPersonFindingtheGreenestPerson0-4Youhavenotstartedturninggreenyet.5-9Youarepalegreen.10-13Youaremediumgreen.Tryharder.14-15Youarebrightgreen,butdonotstoptrying.Scores__________(Yourpartner’sname),Yourscoresare____.Youoften_______andyouusually________.But

youseldom/never_________.So