最新人教版高中英语必修四UNIT2-WORKING-THE-LAND精品ppt课件.ppt

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1、Unit2WorkingthelandEnjoyapoemByLiShenFarmersweedingatnoon,Sweatdownthefieldsoon.Whoknowsfoodonatray,Duetotheirtoilingday.DoyouknowtheChinesepoem?WarmingUp1Haveyoueverbeentothecountryside?Whatdidyouseeordothere?Doyouknowthesegrains(谷物)?wheatricesorghum高粱corncottonpeanutsoybean大豆2Are

2、youfromafarmer’sfamily?Whatdoyouknowaboutfarming?Farmingsowingploughingirrigating(灌溉)cropsweather&climatericetransplanting(插秧)Whenwespeakoffarming,whatwordscanwethinkof?3Haveyouevergrownanyplants?Ifso,whatdidyoudotogrowthem?Ifnot,whatkindofplantwouldyouliketogrow?Howwillyougrowit?p

3、loughthefieldgrowsomeyoungplantsinserttheyoungplantsintothefieldfertilizing(施肥)irrigating(灌溉)SpraytheagriculturalchemicalsharvestriceAccordingtotheWorldHealthOrganization(WHO):●Theworldproducesenoughfoodforeveryone.●Morethan800millionpeoplegotobedhungryeveryday.1Readthestatisticsbe

4、low.Didyouknowthesefactsbefore?Whatproblemdotheyshow?Pre-reading2RiceisthemainfoodinallEastAsianandSoutheastAsiancountries.Itissaidthatthereare2.4billionpeopletoeatriceeverydaythroughouttheworld.Ifthathappened,●peoplemightdieofhunger/sufferfromstarvationandstarvetodeath●feelscared/

5、bepanic(惊慌)●fightforfood,evenkilleachother●thewholeworldwouldgetintotrouble.Whatdoyouthinkwouldhappeniftomorrowtherewassuddenlynoricetoeat?Howtosolvehunger?makinggooduseofthewastelanddevelopingthetechnologyto…inventinganewkindoffood…improvingthequalityofthesoilpreventingthepestsfro

6、meatingourcropsIfyouhadthechancetodosomethingtohelpendhungerintheworld,whatwouldyoudo?Theonlywaytosolvethefoodshortageproblemistoincreasetheyieldofthegraincropperlandareathroughtheadvancementofscienceandtechnology.APioneerForAllPeopleFatherofHybridRiceYuanLongpingHeisfatherofhybrid

7、rice(杂交水稻),whowaslatelyawarded“theNobelPrizeofAsia”.Hereceivedthehonorforhisgreatcontributions(贡献)tohybridriceresearchandworkhedidtoimprovericeproductionindevelopingcountries.NowheisheadoftheNationalHybridRiceResearchandDevelopmentCenterinHunanProvince,China(中国湖南省国家杂交水稻研究与发展中心).Hei

8、scalledapioneerforallpeopl