【课件】Unit+5+Using+Language+课件高二英语人教版（2019）选择性必修第一册

UNIT5WORKINGTHELAND

UsingLanguage:

chemicalversusorganicfarmingLearningobjectivesInthisclasswewill:Toknowthemeaningsofchemicalfarmingandorganicfarming.Toknowtheadvantagesanddisadvantagesofbothchemicalfarmingandorganicfarming.Tomastersometransitionalwordsorphrasesinthetext.Toexpressopinionsonchemicalfarmingandorganicfarming,andwriteanargumentativeessay.

ILoveNewWordsPART01chemical化学的。添加标题在此录入图表的综合描述说明，在此录入图表的综合描述说明。加标题添加标题添加标题添加标题chemical[ˈkemɪkl]化学的bacteria[bækˈtɪəriə]细菌pest[pest]害虫production[prəˈdʌkʃn]生产；制造nutrition[nuˈtrɪʃn]营养mineral[ˈmɪnərəl]矿物质

WarmingupPART02Thestepstoplant

P在此添加标题在此添加标题fertilize

[ˈfɜːtəlaɪz]thesoil施肥killoffthepest

[pest]plow[plaʊ]犁地sow[saʊ]播种waterthecrop[krɒp]ridthesoiloftheweedThestepstoplant

haveaharvest[ˈhɑːrvɪst]收获OrganicFarmingOrganicfarmingissimplyfarmingwithoutusinganychemicals.Whichtomatoesdoyouprefer?5yuan/kg30yuan/kgNormaltomatoesOrganictomatoesWhat'sthemainideaofthetext?Thetextmainlytalksaboutchemicalfarmingandorganicfarming.________________cancausemanyproblems,asanalternative,somepeopleswitchto________________.ChemicalfarmingorganicfarmingOrganicfarmingissimplyfarmingwithoutusinganychemicals.1.Whatischemicalfarming?2.Whatisorganicfarming?Skimthetext,andthenanswerthefollowingquestions.Chemicalfarmingisfarmingusingchemicalpesticidesandartificialfertilisers.1.

What

is

the

main

idea

of

the

text?(

@45@

)A.

Advantages

and

disadvantages

of

chemical

farming

and

organic

farming.B.

Chemical

pesticides

can

fight

crop

disease

and

increase

production.C.

Artificial

fertilisers

can

harm

both

the

land

and

people’s

health.D.

Organic

farmers

focus

on

keeping

their

soil

rich

and

free

of

disease

through

natural

means.AMatchthemainideas(A-D)belowwiththeparagraphs.AWhatorganicfarmingisBWhyman-madechemicalsarestillusedinfarmingCOrganicmethodsforproducingrichsoilDTheproblemswithchemicalfarmingPara.1-2Para.3Para.4Para.5DACBbacteriaandinsectsprohibiteddamagetheyusegrowtoofastnutritionnaturalwastefromanimalseveryyeardifferentdepthsdemandforfoodaroundtheworldchangethekindofcropDACBReadandThink(organization)Title

Texttype:Exposition

The_______and_________ofchemicalfarming.benefitsproblemsPart1:(Para1&2)

Whatorganicfarmingisand__________________.howitkeepthesoilrichPart2:(Para3&4)

Part3:(Para5)Conclusion

1.Whydidmanyfarmerswelcometheintroduction

ofchemicalfarming?

2.Whatconcernsmanypeopleabouttheuseof

pesticides?

Para.1Readthetext,andthenanswerthequestionsonpage56.Whydidmanyfarmerswelcometheintroductionofchemicalfarming?Whatconcernsmanypeopleabouttheuseofpesticides?Manyfarmerswelcomedthemasagreatwaytofightcropdiseasesandincreaseproduction.Theirlong-termusecansometimesharmboththelandandpeople’shealth.Self-study3.Whatisoneproblemwiththeuseofchemical

fertilisers?

Para.24.Howisorganicfarmingdifferentfromchemicalfarming?

Para.3Readthetext,andthenanswerthequestionsonpage56.Whatisoneproblemwiththeuseofchemicalfertilisers?Howisorganicfarmingdifferentfromchemicalfarming?Cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.Organicfarmingissimplyfarmingwithoutusinganychemicals.Organicfarmersfocusonkeepingtheirsoilrichandfreeofdiseasesthroughnaturalmeans.5.Whydoorganicfarmerschangethekindof

cropgrowninafieldeveryyear?Differentcropsaregrownbecausetheyput

importantmineralsbackintotheground,makingitreadyforthenextbatchofcrops.Para.4Readthetext,andthenanswerthequestionsonpage56.Whydoorganicfarmerschangethekindofcropgrowninafieldeveryyear?Differentcropsaregrownbecausetheyputimportantmineralsbackintothegroundmakingitreadyforthenextbatchofcrops.6.

Whatisthegoalofusingorganicfarmingmethods?

Do

youthinkitcanbereached?Whyor

whynot?

Para.4Readthetext,andthenanswerthequestionsonpage56.Whatisthegoalofusingorganicfarmingmethods?Doyouthinkitcanbereached?Whyorwhynot?Thegoalofusingorganicfarmingmethodsistogrowgoodfoodwhileavoidingdamagetotheenvironmentortopeople'shealth.Yes,Ithinkthisgoalcanbereachedbecausepeopletendtoliveagreenandhealthylifeandtheyneedorganicfarmingtodevelop.chemicalfarmingThinkingorganicfarmingadvantagesdisadvantagesfightcropdiseaseincreaseproductionlowercostcropslookbeautifuloutsidegoodfoodavoidingdamagetotheenvironmentortopeople'shealthharmthelandharmpeople’shealthharmtheenvironmentcropsarelessinnutritioncannotmeetthedemandforfoodmoreeffortsandhighercostsmellygaseshowever,but,onthecontrary,instead,ononehand…ontheotherhandforexample,forinstance,infact,suchas,take…forexampleboth…and…,notonly…butalso,inaddition,and,also,aswell,

what’smore,besides,furthermore,moreover,what’sworsewhy…isbecause…,therefore,forthisreason,thus,consequently,asaressultasfor,asanalternativeReadforwriting2(discoursemarkers)contrastillustrateaddcauseandeffectintroduceanewtopicHowtowriteanargumentativeessaybrainstormpointsanddetailsorganizationdiscoursemarkersargumentchemicalfarmingThinkingorganicfarmingadvantagesdisadvantagesfightcropdiseaseincreaseproductionlowercostcropslookbeautifuloutsidegoodfoodavoidingdamagetotheenvironmentortopeople'shealthharmthelandharmpeople’shealthharmtheenvironmentcropsarelessinnutritioncannotmeetthedemandforfoodmoreeffortsandhighercostsmellygasesexpressyouropinions:Inmyeyes…I’mopposedto…I’dprefer…because…Frommypointofview,…WhatIfirmlybelieveinisthat…makeaconclusion:Insummary,Inaword,…Allinall,…Tosumup,…

Inrecentdays,scientistshavediscoveredthatusing________fertilizersforalongtimecan_________________thelandandalsopeople'shealth.Thereareseveral__________causedbychemicalfertilizers.Theydamagetheland,stayinthewaterforalongtimewhichcan___________inpeople’sbodiesand____________manyillnesses.chemicalproblemscausedamagetobuildupFillintheblanksaccordingtothepassage.leadto________farmingisbecomingmorepopularwithsomefarmers.Organicfarmingdoesnotuseanychemicalsand_________keepingthesoilrich.Thisalso______theairandcrops___________chemicals.Therearemanyorganicfarming_________formakingthelandhealthyandproductive.Allofthesemethodstrytoproducegoodfoodandtokeeptheenvironmentandpeople’shealth.keepmethodsfocusonOrganicfreefromchemicalfarmingorganicfarmingchemicalfertilizers

natural

fertilizersOrganicFarmingReadforwriting2(discoursemarkers)Chemicalpesticidesandartificialfertilisershavebeeninwidespreaduseinfarmingsincethemiddleofthe20thcentury.Whentheywerefirstintroduced,manyfarmerswelcomedthemasagreatwaytofightcropdiseaseandincreaseproduction.Overtime,①_________,whatsomescientistshavefoundisthattheirlong-termusecansometimesharm③________theland______people’shealth.②____________,pesticidescandamagethelandbykilling③________harmfulbacteriaandinsects,___________helpfulones.③___________,thesechemicalscanstayinthesoilandundergroundwatersourcesforalongtime.Thisaffectsthecropsgrownonthelandand,inturn,theanimalsandhumanswhodigestthem.CHEMICALVERSUSORGANICFARMINGhoweverbothandForexamplenotonlybutalsoInadditionReadforwriting2(discoursemarkers)CHEMICALVERSUSORGANICFARMINGManypeopleworrythatthesechemicalsmaymakethemillandevencausecancer.②___________,somepesticideslikeDDThavebeenprohibitedinmostcountriesbecauseofthedamagetheycausetopeopleandtheenvironment.⑤_______chemicalfertilisers,cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.Theymaylookbeautifulontheoutside,①_______insidethereisusuallymorewaterthanessentialminerals,③_______theyoftenhavelessflavour_______.⑤________________,somefarmershaveswitchedtoorganicfarming,andmanycustomershaveturnedtoorganicfoodwhentheyshopatthelocalgrocery.Organicfarmingissimplyfarmingwithoutusinganychemicals.InfactAsforbutandaswellAsanalternativeReadforwriting2(discoursemarkers)CHEMICALVERSUSORGANICFARMINGOrganicfarmersfocusonkeepingtheirsoilrichandfreeofdiseasethroughnaturalmeans.②____________,manyorganicfarmersusenaturalwastefromanimalsasfertiliser.Thismakesthesoilintheirfieldsricherinminerals.It③_________keepstheair,soil,water,andcropsfreeofchemicals.Organicfarmers③_________usemanyothermethodstoproducerichsoil.Theyoftenchangethekindofcropgrownineachfieldeveryyear.②___________,theymaygrowcornorwheatinafieldoneyear,andthengrowbeanstherethenext.④___________________________________________theyputimportantmineralsbackintotheground,makingitreadyforthenextbatchofcrops.ForexamplealsoForinstancealsoWhydifferentcropsaregrownisbecauseReadforwriting2(discoursemarkers)CHEMICALVERSUSORGANICFARMINGOrganicfarmers③________plantdiversecropsthatusedifferentdepthsofsoiltohelpkeepitrich.②____________,peanutsgrowontheground’ssurface,①_________manyothervegetablesputdowndeeproots.Thegoalofusingdifferentorganicfarmingmethodsistogrowgoodfoodwhileavoidingdamagetotheenvironmentortopeople’shealth.Somepeoplewouldprefertostoptheuseofman-madechemicalsinagricultureentirely.Whatkeepsthemfromdoingsoisthefactthatchemicalfarmingservesthehighdemandforfoodaroundtheworld.Organicfarmingisnowherenearabletomeetthatneed.④___________,thereisstillalongwaytofindasuitablesolutionthatputssufficientfoodonthedinnertablewhilekeepingpeopleandtheenvironmentashealthyaspossible.ForexamplealsobutThereforehowever,but,onthecontrary,instead,ononehand…ontheotherhandforexample,forinstance,infact,suchas,take…forexampleboth…and…,notonly…butalso,inaddition,and,also,aswell,

what’smore,besides,furthermore,moreover,what’sworsewhy…isbecause…,therefore,forthisreason,thus,consequently,asaressultasfor,asanalternativeReadforwriting2(discoursemarkers)contrastillustrateaddcauseandeffectintroduceanewtopicWritingTask近年来，媒体对“农业可持续发展”“食品安全”等问题作了一些报道，引发了许多讨论，到底哪种农业种植方式有利于农业可持续发展并解决食品安全问题呢？如某英语报记者对你进行采访，征求对此现象的看法，请用英语写一篇议论文，表达自己的观点，并说明理由。BrainstormInmyopinion/inmyview/inmyeyes/asfarasIamconcerned,organicfarmingispreferabletochemicalfarming,becauseit’sbeneficialtobothpeople’shealthandtheenvironment,andfavorable

to

sustainable

development

of

agriculture.Inmyopinion,Iagree/amfor/beinfavorofchemicalfarming,becauseitcanfightcropdeceaseandincreaseproduction,thusservingthehighdemandforthefoodaroundtheworld.What’syourargument?Brainstorm—organization1ArgumentPoint1Point2Point3ConclusionPart1Part2…Part3detailsdetailsdetailsdetailschemicalfarmingThinkingorganicfarmingadvantagesdisadvantagesfightcropdiseaseincreaseproductionlowercostcropslookbeautifuloutsidegoodfoodavoidingdamagetotheenvironmentortopeople'shealthharmthelandharmpeople’shealthharmtheenvi