Unit2WorkingthelandUsinglanguage必修四Whatdoyouknowaboutfarming?1.Preparetheseeds.Buyorselecttheseedsfromastore.2.Ploworturnoverthesoil.3.Sowtheseedsinthesoil.4.Harvest.Itisfertilizer.Whatisthesubstanceweputonthesoiltomakecropsgrow?Howmanykindsoffertilizersdofarmersuse?Therearetwokinds.Theyarechemicalfertilizersandnaturalones.chemicalfertilizersnaturalfertilizerschemicalfarmingorganicfarmingBetter?ReadingCHEMICALORORGANICFARMING?Long-termuseofchemicalfertilizerscancausedamagetothelandandpeople’shealth.Problemscausedbychemicalfertilizers.ThemainideaofeachparagraphP1.P2.Farmersandcustomersturntoorganicfarming.Othermethodstokeepthesoilfertile.P3.P4.1.Whatis“organicfarming”?Answerthequestions.2.Whatdoorganicfarmersprefertouseasfertilizer?Thefertilizerthatorganicfarmerspreferis.naturalwastefromanimalsOrganicfarmingmeansgrowingcrops.withoutusinganychemicalsTheyareagreatwaytostopandincrease.3.Whyarechemicalfertilizerssopopularinfarmingtoday?cropdiseasecropdiseaseproductionproduction4.Whatproblemscanbecausedbyusingchemicalfertilizers?Theycandamagethelandbyhelpfulbacterialandpestsandbystayingintheandwaterforalongtime.Theydamagepeople'sbybuildingupintheirbodiesandleadingtoor.killinggroundundergroundhealthcancerotherillnesses5.Whatisthemainreasonforusingorganicfarmingmethods?Themainreasonforusingorganicfarmingmethodsistogrowandtoavoidor.goodfooddamagingtheenvironmentpeople’shealth1.…killingthehelpfulbacteriaandpestsasaswellaswellastheharmfulones.aswellas“(除...之外)也，又”,可连接并列的单词或短语.eg:Hegrowsflowersaswellasvegetables.Ateachershouldentertainaswellasteach.Itisunpleasantinsummeraswellasinwinter.aswellas与notonly…butalso区别：notonly…butalso侧重后者，aswellas则着重前者，也就是说AaswellasB=notonlyBbutalsoA。eg：Mr.Brownhasexperienceaswellasknowledge.布朗先生不仅有知识而且有经验。（侧重前者，即experience）Mr.Brownhasnotonlyknowledgebutalsoexperience.（着重后者，即butalso后面的部分）2.Thesechemicalsinthefoodsupplybuildupinpeople’sbodiesovertime.buildup增强;建立;开发eg:Hardworkingconditionsbuildupcharacter.艰苦的工作条件能磨练人的性格。3.Manyofthesechemicalscanleadtocancerorotherillnesses.leadto:导致;造成eg:Toomuchworkandtoolittlerestoftenleadtoillness.过量的工作和过少的休息会引起疾病。AllroadsleadtoRome.条条大道通罗马。4.Theyfocusonkeepingtheirsoilrichandfreeofdisease.focuson:集中(注意力,精力等)于eg:Youshouldfocusyourattentiononyourwork.把注意力集中在你的工作上。focusone'sattentionon把注意力集中到Healwayswantstobethefocusofattention.Hetookoutthebinocularsandadjustedthefocus.ThefocusofthischapteristheAmericanRevolution.focus还可以作名词，意思是“焦点,焦距,中心”eg:5.reducev.减少,降低e.g.公司尽力通过减少花销来提高利润。Thecompanytriestoincreaseprofitsby_______________.今年我们已经减少了业务开支。We______________expensesthisyear.reducingcostshavereducedcause/dodamageto,washoff,leadto,buildup,inaddition(to),keep…freefrom/of,focuson,avoiddoing1.Hismistakes______hisfailure.2.Thesechemicalsinthefoodsupply________inpeople’sbodiesovertime.3.Allroads_______Rome.4.Please_____yourmind___thefollowingproblem.5.Childrenshould________________violence.ledtobuildupfocusonleadtobekeptfreefrom6.Helikesbasketball.___________,helikesfootball.Helikesbasketball_____________football.7.LittleTomstuckto________themud____hisshoesbyhimselfbeforehecamein.8.Itriedto______________(meet)himbecausehealwaysboresme.9.ThestormonMay3___________great__________peopleinBurmasofar.cause/dodamageto,washoff,leadto,buildup,inaddition(to),keep…freefrom/of,focuson,avoiddoingInadditioninadditiontowashingoffavoidmeetinghascauseddamageto1.Writeasummaryoftheadvantagesoforganicfarmingandthedisadvantagesofchemicalfarming.2.Collectsomeinformationaboutthesafetyandimportanceofgreenfood.
