2019-2020年高中英语unit2usinglanguage学案新人教版必修4.doc

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1、2019-2020年高中英语unit2usinglanguage学案新人教版必修4Writedownthemainidea(主要大意)foreachparagragh.P1.P2.P3.P4.1.Whatproblemsarecausedbyusingchemicalfertilizers?2.Whyarenaturalfertilizersbetter?Readthetextcarefullyandfillintheblanks.ChemicalFarmingAdvantagesStoppingcropdiseaseandincrease________________Chemic

2、alFarmingDisadvantagesDamagingtheland:killingthehelpful________________Damagingpeople’shealth:◆Manychemicalsinthefoodsupplycanleadtocancerorotherillnesses.◆Foodgrowstoofasttobefullofmuch________.3.Whatspecialwaysoffarmingdoorganicfarmersuse?WhatspecialwaysorganicfarmersdoWhydoso?Usenaturalferti

3、lizers.Changecropseveryfewyears.Growcropsthatneeddifferentlevelsofthesoil.True(T)orFalse(F)．1．Organicfarmerspreferusingnaturalwastefromanimalsandchemicalfertilizers.(　　)2．Usingnaturalwastemakesthesoilricherinmineralsandsomorefertile.(　　)3．Usingorganicfarmingmethodsistogrowgoodfoodandtoavoiddama

4、gingtheenvironmentorpeople’shealth.(　　)4．Usingchemicalfertilizershasbeeverymoninfarmingoverthepasthalfcentury.(　　)5．Chemicalfertilizersonlykillharmfulbacteriaandpests.(　　)Discussion:AdvantagesofgreenfoodTakenotes:*tastedelicious*grownin_________air*freeofp___________*_________nutrition*do______

5、_topeople’shealthandthee___________SummaryWhatdowelearntoday?___________________________________________________________