高中英语 Unit2 第三学时Using LanguageReadinglistening and speaking同步教学课件 新人教版必修4.ppt

第三学时usinglanguagereading listeningandspeaking task1 快速阅读课文chemicalororganicfarming 以约30词写出文章的段落大意 温馨提示 本文是说明文 写摘要时要抓住文章介绍的主要方面 chemicalfertilizersmaystopcropdiseases increaseproductionbutcausedamagetothelandandpeoplewhileorganicfarmingmaykeepthesoilrichandfreefromchemicals task2 仔细阅读chemicalororganicfarming 然后根据课文内容选择最佳答案 1 fromthepassage wecanseeorganicfarmersarethosewho a growcropswithchemicalfertilizersb growcropswithnaturalfertilizersc produceorganicfertilizersd carefortheenvironment b 2 fromthefourthparagraph weknowthat a it snotgoodtoplantgrassbetweencropsb peanutsusethesurfaceofsoilc peasandsoybeansshouldbegrowntogetherwithcornandwheatd vegetablesthatputdowndeeprootsareharmfultothesoil b 3 accordingtothetext whichofthefollowingisnottheproblemcausedbychemicalfertilizer a cropdiseasescanbestopped b chemicalsstayinthegroundandundergroundwaterforalongtime c thehelpfulbacteriaandpestsarekilledaswellastheharmfulone d manyofthesefertilizersaredangeroustopeople shealth 4 howmanywaysdotheorganicfarmershavetokeeptheirsoilfertileandhealthy a 3b 4c 5d 6 a a partaroleplay 情景介绍 alice向george请教有关有机耕作的问题 角色 aliceandgeorge任务 1 请根据中文提示提出问题 2 请你的同学根据课文内容回答你的提问 然后你们互换角色进行口语练习 q1 为什么在耕作中使用化肥变得越来越普遍 q2 使用化肥会导致什么问题 q3 什么是有机耕作 q4 有机耕作有什么好处 partaroleplay q1 whyarechemicalfertilizerssopopularinfarmingtoday a1 becausetheyareagreatwaytostopcropdiseaseandincreaseproduction q2 whatproblemscanbecausedbyusingchemicalfertilizers a2 theycandamagethelandbykillinghelpfulbacteriaandpestsandbystayinginthegroundandundergroundwaterforalongtime theydamagepeople shealthbybuildingupintheirbodiesandleadingtocancerorotherillnesses q3 whatisorganicfarming a3 organicfarmingmeansgrowingcropswithoutusinganychemicals q4 whataretheadvantagesofusingorganicfarmingmethods a4 theadvantagesofusingorganicfarmingmethodsaretogrowgoodfoodandavoiddamagingtheenvironmentorpeople shealth partbretelling 请用自己的话复述课文 你可以参照上述问题及其答案 关键词 chemicalfertilizer 化学肥料 increase 提高 damage 损害 organic 有机的 partbretelling manyfarmersusechemicalfertilizersasagreatwaytostopcropdiseaseandincreaseproduction buttheycandamagethelandanddoharmtopeople shealth evenleadtocancerorotherillnesses asaresult somefarmersandmanycustomersarebeginningtoturntoorganicfarming whichmeansnotusinganychemicals duetothemethodoforganicfarmingwenowcangrowgoodfood what smore wecanavoiddamagingtheenvironmentorpeople shealth usinglanguage 1 thesechemicalsinthefoodsupplybuildupinpeople sbodiesovertime 随着时间的推移 食物中的这些化学成分会在人体中堆积 p14 buildup逐步建立 增强 增进 思维拓展 观察下列划线部分的意思 1 youmustbuildupyourstrengthaftertheillness 患病之后 你必须增强你的体质 2 tolearnalanguagewell youmustbuildupausefulvocabulary 要学好一种语言 你必须逐步积累有用的词汇 3 hehasbuiltupagoodbusinessovertheyearsfromasmallbeginning 他已经从小本经营发展成一个大的企业 4 theusiscontinuouslybuildingupitsarmedforce 美国正继续加强军事力量 词语链接 2 withthesediscoveries somefarmersandmanycustomersarebeginningtoturntoorganicfarming p14 由于这些发现 一些农民和消费者开始转向有机耕作 discoveryn 发现 发觉 被发现的事物 discoverv 发现 acknowledgeanewdiscovery承认新发现 announceanewdiscovery宣布新发现 makeadiscovery做出新发现 即学即练 完成下列句子 1 美洲的发现 formsthebeginningofanewperiod 2 考虑到最近的发现 itmaybenecessarytorevise 修改 ourprevioustheory 3 althoughhiswifeisyoung she 有惊人的发现 1 thediscoveryofamerica 2 inthelightofrecentdiscoveries 3 hasmadewonderfuldiscoveries 3 theyfocusonkeepingtheirsoilrichandfreeofdiseases p14 他们注重的是保持土壤肥沃并且免受病害 词语链接 focusvi n 聚焦 注视 焦点 focuson聚焦于 集中 focusone sattention thoughts effortsonsth 集中注意力 思想 努力在某问题上 newsfocus新闻要点 infocus焦点对准 清晰 outoffocus焦点没有对准 模糊 即学即练a 完成下列句子 1 healwayswantstobethe 人们关注的焦点 2 bringtheobjectinto 焦点 ifyouwantasharpphotograph 1 focusofpeople sattention 2 thefocus 3 becamethefocusofeveryone sattention 4 werefocusedon 5 focusyourminds 3 he 成了大家关注的焦点 afterwinningtheolympicgoldmedal 4 alleyes 集中在 上 thespeaker 5 please 集中精力 onyourresearchratherthanyoursalary 词语链接 befreeof fromsth 使摆脱 无 的 freedomn 自由 set free释放 给 自由 keep freeof from使 免受 影响 伤害 protect from使 免受 影响 伤害 freesb sth of fromsb sth 清除 解除 即学即练b 完成下列句子 1 ourgovernmentofficialsseem 很清廉 2 probablynoone 没有不犯错误 onlysomemakemoreandsomeless 3 youare 一点错也没有 becauseofyourcarefulness 4 theseexerciseshelpthebody 消除紧张 1 freeofcorruption 2 isfreefrommistakes 3 freefromanyfault 4 freeoftension 5 thepolicearedetermined 使社区消除暴力犯罪 6 they 放出鸟儿 fromthecages 7 weenjoy 言论自由 8 thenationwasreunitedandslaves 被释放 5 tofreethecommunityfromviolentcrime 6 freedthebirds 7 freedomofspeech 8 weresetfree 词语链接 4 swapsummarieswithyourpartnerandgiveeachothercomments p15 和你的同伴交换摘要 并给出各自的评论 commentn 评论 议论 可数或不可数皆可 commentvi vt 表达意见 作出评论 makenocomment没有作出评论 没有发表意见 commenton uponsth 评论某事 即学即练 完成下列句子 1 he 没有作评论 ourproposal 2 he 评论说 itwasanexcellentfilm 3 he 评论了一番天气 4 myteacher 做了一番评论 aboutmymistake 5 heagreedwithout 太多评论 1 madenocommentson 2 commentedthat 3 commentedontheweather 4 madeacomment 5 toomuchcomment 5 hewrotedownhisadviceinabookcalledqiminyaoshu whichwasconsideredanimportantsummaryoftheknowledgeoffarming p52 他把这些建议写在一本叫 齐民要术 的书中 这本书被认为是农业知识的重要总结 词语链接 summaryn 总结 归纳 摘要 概要 adj 简短的 简明扼要的 insummary总的说来 归纳起来 readingtask 即学即练 完成下列句子 1 hereis 新闻摘要 2 wehadto 写个提要 ofthechapter 3 总的来说 humanshavealotgoingforthem 1 asummaryofthenews anewssummary 2 writeasummary 3 insummary 一 单词拼写1 thegovernmenthasbannedtheuseof 化学的 weapons 2 shealwayswantstobethe 焦点 中心 ofattention 3 doyouhaveany 评论 tomakeaboutthecauseofthedisaster ment 4 in 总结 thiswasadisappointingperfor mance 5 thenewmodelwillbein 生产 bytheendoftheyear 6 thehousingpricehasbeen 减缩 forthesakeoflowincomeinhabitants 4 summary 5 production6 reduced 二 词语活用用与discover相关的词语完成下列小段落 madamcuriewasagreat 1 she 2 radiumandthankstohergreat 3 wehavebetterandfasterwaystoknowsomehiddendiseasesandhavebetterchancetobecured 1 discoverer 2 discovered 3 discovery 三 综合填空在下列各句空格处填入恰当的单词 1 mr jacksonismyboss for i veworkedformorethantenyears 2 thespecialstrainofricemakes possibletopr