Unit19Modernagriculture第二课时教案.docx

Unit 19 dern agriulture 第二时教案Unit19dernagriulture第二时教案ITeahingais:TalabutdernagriultureanditseffetsnpepleslifelearnhtgivesebdadvieandaedeisinsSiilardialguepresentatinithnerdsandexpressinsusedithinIITeahingaids:tapererder,pitures,slidesStep1Pre-reading1letSslatthefllingpitureandfindutthedifferenebeteenthedernfaringandtraditinalfaring-letSsfinduttheadvantagesanddisadvantagesfeahasandfillinthetableRaisinghiensSallsaleLargesaleHrseperAnialsahinesliatentrlpenairGreenhuse2Grupr:GetSsrinpairanddisussthequestin-hattherhangeshavehappenednfarsinthelast100ears?3Tsuupinaferds:“iththedevelpentfthenetehnique,theagriulturalprdutinhasinreasedThefarersanuseheialfertilizatintaerpstrngerandbetterandtheanuseadvanedahinestirrigaterultivatethefarland”StepIIReading1SiingT:“hatsthetitlefthereadingpassage?”Ss:“dernagriulture”T:“hatdesiteaninhinese?”Ss:“现代农业”T:“Htsa传统农业inEnglish?”Ss:“traditinalagriulture”T:“anuiaginehattraditinalagriultureislie?”Ss:letSsreadthetextfirstlandanserthefllingquestins:Huhlandanbeusedfrfainginhina?hatistheadvantageanddisadvantagefheialfertilizatin?hatisthebiggestprblefhinesefarers?2SippingletSsreadthepassagefrthesendtieandansertquestins:hatdes“G”standfr?hatistheadvantageftateshihereusingtehniquennas“G”?3IntensivereadingletSsreadthepassageandfillinthetable:90s-1980s980s-presentTheusefahinesegtratrsTheusefeletripupsfrirrigatinTheusefheialfertilizersTheusefinsetillersTheusefspeialseedbedsTheusefgreenhusesTaevegetablesbiggerrbetterThangevegetablesstheangrnprsilnledgefrabradInnvatinsPrblesAdvantagesheialfertilisersShrtagefarablelandBiggerandbetterrpsPupsfrirrigatineathernditinsBiggerandbetterrpsSpeialseedbedsShrtagefarablelandrerpsinneearahinesegtratrsHtaeprdutinheaperBiggerrpsnrelandbfeerhandsInternatinalexhangeLafnledgeLearnfrtherpepleGreenhuseseathernditinBiggerandbetterrpsGreenhusesShrtagefarablelandrerpsinneearGtehniqueShrtagefarablelandangrinprsil;bigger≈healthier;lesstietripe4ListeningLetSslistentthetapeandfllitDisussinletSsringrupsandiaginehattherhangeshavehappenednfarsinthelast100earsletSsdisussinthefllingquestinsAtthebeginningfthepassage,hdestheritersa“Itisnthearablelandthatthefarersprduefdfrthehleppulatinfhina”?hatdestheriterantttellusbsaing,“Ntnlfdprdutinisiprtantbutalstaingareftheenvirnent”?hataneinferfrthesentene“InhinaabutnehundredresearhstatinsarendingGresearhtaebettertates,ttn?”hatanuiagineabutthefutureffdprdutin?StepIVPst-reading1finishtheexerisesinStudentsB,page46,Exerise1-22Ifpssible,teaherangetSsreadanetextinrb,page111,andfinishalltheexerisesStepVLanguagepintsandusefulexpressins1LetSsbtheselvesfindutsephrasesrusefulexpressins,hihareiprtantinthetext2teaherexplainlanguagepints:paret/ithFrthusandsfearsaeusefBeharfultDependnAsellasNtnlbutalsPrtetfrNatterhBedifferentfrStandfrIntherrdsTheatatesgrfranaturalseedishangedAvarietfvertheearsHaveaneffetnaegdneaeusefInthe1980sGagainstHerFinishfftheexerisentherb教案点评：根据新教材中的以阅读为主的教学环节所设计的一时/两时教案。本阅读的目的是让学生通过阅读英语材料，掌握实验步骤，领悟严谨的科学精神财富，体验英语语言、问题，学习灵活使用语言结构。这个教学过程主要分四个教学步骤：pre-reading,reading,pst-reading,languagepints。pre-reading：在阅读文之前，教师可适当的讲解与本单元有关的背景知识,运用图片向学生介绍传统农业与现代农业的差异，通过提问的方式引入文主题。教师可根据文的内容和篇章结构，从不同的角度，引导学生对文内容进行预测和讨论。reading：文分三个步骤：掠读（siing），即带着某个问题进行搜索式阅读，这样能培养学生捕捉关键句的能力；略读，即教师指导学生通读全文，理解文大意，培养学生发现或段落的主题句及