英語必修四人教版Unit 2 Working the land using language教案

.@:Period4Chemicalororganicfarming?Teachinggoals1.Languagegoals語言目的A重點詞語mineral,reduce,supply,organic,level,whatever,bacteria,referto,yearafteryearB重點句型:Thereare8sentenceswith–ingassubj.orobj.2.Abilitygoals才能目的EnableSstomasterthemainideaofthetextandknowthewaysoforganizingarticles.3.Learningabilitygoals學能目的Helpstudentslearnhowtoenlargethewordsandknowthewaysofthesametopic.A.Teachingimportantanddifficultpoints1.Howtograspthemainideaofthepassage.2.Howtograspthewordsandphrasesandbeabletousethemofthesametopic.B.TeachingmethodsShowquestions,readfast,findthemainideacarefullyandfinishallthetasks.C.Teachingaids:Arecorderandaprojector.D.Teachingprocedures&waysLearningnewrelatedwordsandexpressions.Chemicaladj.化學的；關(guān)于化學的Productionn.消費；制造Bacterian.細菌Pestn.害蟲；害獸；害鳥Nutritionn.營養(yǎng)；滋養(yǎng)；食物Mineraln.礦物；礦石discoveryn.發(fā)現(xiàn)；覺察Focusn.焦點；中心點vt.集中；聚焦Soiln.土壤Reducevt.減少；減縮Rootn.根；根源skimvt.閱讀；略讀Underlinevt.畫底線標出；強調(diào)Summaryn.總結(jié)；摘要；概要Commentn.評論；議論vi.&vt.表達意見;做出評論buildup逐漸增強;建立;開發(fā)leadto導致;造成〔后果〕focuson集中〔注意力，精力等〕于keep…free使…免受〔影響，傷害等〕；from/of使…不含〔有害物〕2.Readingandanswering:〕Whatisthemainideaofthispassage?Thispassagetellsussomethingaboutorganicfarming.Itmeansgrowingcropswithoutchemicalfertilizerswhichdamagethesoil.Theorganicfarmerskeepthesoilrichandhealthyinseveralways.2.〕Whyarechemicalfertilizerssopopularinfarmingtoday?Theyareagreatwaytostopcropdiseaseandincreaseproduction.3.〕Whatproblemscanbecausedbyusingchemicalfertilizers?Theycandamagethelandbykillinghelpfulbacteriaandpetsandbystayinginthegroundandundergroundwaterforalongtime,Theydamagepeople'shealthbybuildingupintheirbodiesandleadingtocancerorotherillnesses.4.〕Whatisorganicfarming?Organicfarmingmeansgrowingcropswithoutusinganychemicals.5.〕Whatisthemainreasonforusingorganicfarmingmethods?Themainreasonforusingorganicfarmingmethodsistogrowgoodfoodandtoavoiddamagingtheenvironmentorpeople’shealth.3.Findandwritedownthemethodsandadvantagesinthepassage.4.Languagepoints:1〕Thesechemicalsinthefoodsupplybuildupinpeople’sbodiesovertime.buildup

增強;建立；開發(fā)Hardworkingconditionsbuildupcharacter.艱辛的工作條件能磨練人的性格。2〕Manyofthesechemicalscanleadtocancerorotherillnesses.leadto:導致；造成Toomuchworkandtoolittlerestoftenleadtoillness.

過量的工作和過少的休息會引起疾病。AllroadsleadtoRome.

條條大道通羅馬。3〕Theyfocusonkeepingtheirsoilrichandfreeofdisease.focuson:集中〔注意力，精力等〕于Youshouldfocusyourattentiononyourwork.

把注意力集中在你的工作上。Olympus:Focusonlife.

奧林巴斯：瞄準生活。4〕Thisalsokeepstheair,soil,waterand