必修4第二单元Warmingupppt课件.ppt

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1、Warmingup&ReadingWorkingthelandLearninggoal:LearnsomethingmoreaboutthegrowthofthericeandprepareforthereadingEnjoyaPoemByLiShenFarmersweedingatnoon,Sweatdownthefieldsoon.Whoknowsfoodonatray,Duetotheirtoilingday.toilv.苦干，辛勤劳动Ｌead-inWhatdoyouknowabout“farming”?wheatricecornpotatoesp

2、eanuttomatoessorghumcottonAgricultureinthepastAgricultureinthemoderntimesHaveyoueverbeentothecountryside?Whatdidyouseeordothere?Whatdoyouthinkofwhenyouseethewordagriculture?waterfarmertoolfieldseedmachinecattlevillagericeDoyouknowhowriceisgrown?First,thefarmersplowthefield.Theyha

3、vetomakethesoillooseenoughtoplantcrops.Second,growsomeyoungplants.Third,theyinserttheyoungplantsintotheloosefield.Theyfertilizethefield.Atlast,theywillgettheharvest.Areyoufromafarmer’sfamily?Whatdoyouknowaboutfarming?ploughing(犁田)seeding(播种)fertilizing(施肥)irrigating(灌溉)harvesting

4、(收获)winnowing(扬谷)Haveyouevergrownanyplants?Ifso,whatdidyoudotogrowthem?Ifnot,whatkindofplantwouldyouliketotrygrowing?Howwouldyougrowit?Readthestatisticsbelow.Didyouknowthesefactsbefore?Whatproblemdotheyshow?WhatisthemainfoodinallEastAsianandSoutheastAsiancountries?Rice.Itissaidth

5、atthereare2.4billionpeoplewhoeatriceeverydaythroughouttheworld.Whatdoyouthinkwouldhappeniftomorrowtherewassuddenlynoricetoeat?sufferfromstarvationandstarvetodeath.feelscared/bepanic(惊慌).fightforfood,evenkilleachotherandthewholecountrywouldgetintotrouble.Ifyouhadthechancetodosomet

6、hingtohelpendhungerintheworld,whatwouldyoudo?Howtosolvehunger?makinggooduseofthewastelanddevelopingthetechnologyto…inventinganewkindoffood…improvingthequalityofthesoilpreventingthepestsfromeatingourcropsJustatthattime,aChinesescientistdeclaredtotheworldthatChinacansolvetheproblem

7、byhimselfandhelptosolvethesameproblemintheworld.YuanLongping“FatherofHybridRice”重穗型超高产杂交稻Homework1.SurftheInternettofindmoreinformationaboutfarming.2.Previewthereading.