必修四unit2 reading 和練習講解

Unit2Workingtheland

2021/5/91pre-readingWhatproblemdotheyshow?hungerHowdoyoufeelwhenyouseethepictures?Dosomethingtoridtheworldofhunger!2021/5/92Howmuchlandcanbeusedforfarming?3/4ofourearthiscoveredwithwater!2.1/2ofthispieceistoohot,cold,orwetforfarming!3.3/4ofthispartisusedforroads,buildingslikehouses,schools!4.Only1/32oftheearthisusedforfarming!①②③④⑤2021/5/93APioneerForAllPeopleSuperhybridrice2021/5/94Task1Scanning

Para1A.DrYuan’sdreams.Para2B.DrYuan’spersonality.Para3C.DrYuan’sbiography.Para4D.DrYuan’sappearanceandhisachievement.2021/5/95Para1AppearanceandAchievement.Appearanceface:arm:body:sunburntsunburntslimbutstronglookslikea______farmerAlthoughheisoneofChina’smostfamousscientists,YuanLongpingconsidershimselfafarmer,forheworksthelandtodohisresearch.2021/5/96Indeed,hissunburntfaceandarmsandhisslim,strongbodyarejustlikethoseofmillionsofChinesefarmers,forwhomhestruggledforthepastfivedecades.DrYuanislikemoreafarmerthan

ascientist.2021/5/97Para1appearanceandachievement.Appearanceface:arm:body:sunburntsunburntslimbutstronglookslikea______farmer2.achievementsHegrowswhatiscalled_____________,whichmakesitpossibleto

produce_________moreofthecropinthesamefields.superhybridriceone-fifth2021/5/98Para.2HisbiographyTimeinformation19301953AsayoungmanInarecentharvestnowBorninBeijingGraduatedfromcollege

Hungerwasadisturbingproblem.searchforawaytoincreasethericeharvest.

200milliontonswasproduced

Circulatinghisknowledge22%7%Means?UNridtheworldofhunger2021/5/99Thankstohisresearch,theUNhasmoretoolsinthebattletoridtheworldof

hunger.由于他的研究，聯(lián)合國在消除世界饑餓的戰(zhàn)斗中有了更多的方法．Usinghishybridrice,farmersareproducingharveststwiceaslargeasbefore.using作狀語，修飾后面整個句子2021/5/910Paragraph3Topicsentence?DrYuanisquitesatisfiedwithhislife.Hedoesn’tcareabout______and_______.Helikesfreedomforhissearchandhobbies.famemoneyPersonality2021/5/9112021/5/912Para4:hisdreamsHisfirstdreamHisseconddream▲Astallassorghum▲

Asbigasanearofcorn▲AshugeasapeanutToexporthisricesothatitcanbegrownaroundtheglobe.2021/5/9131.

himself(as)afarmer認為他自己是個農(nóng)民2.

theland

耕種土地，在田間耕作3.

doone’s

進行研究

4.

faceandarms

被太陽曬黑的臉龐和手臂5.

thepastfive

在過去的50年里6.

thefirstagriculturalpioneer

rice第一個種高產(chǎn)水稻的農(nóng)業(yè)先鋒7.

ahigh

高產(chǎn)量8.graduate

SouthwestAgriculturalCollege

從西南農(nóng)學(xué)院畢業(yè)9.life

人生目標10.thegreatneed

對……巨大的需求2021/5/91411.a

problem

一個令人煩惱的問題12.search

尋找13.without_

__theareaoffields不擴大農(nóng)田面積14.

one’sknowledge

傳播知識15.

developedcountries

欠發(fā)達國家16.

幸虧，由于17.

theworld

hunger

消除（解決）世界饑餓18.harveststwice

before

產(chǎn)量是從前的兩倍19.bequite

對…….非常滿意20.care

喜歡；照顧；關(guān)心；___littleabout對…很少關(guān)心

2021/5/91521.wouldrather

sth.

寧愿做……22.spend…

在...上花費...23.

acomfortablelife

過舒適的生活24.rather

而不是25._______sb.for使…做好準備，為…裝備26.givehimless

_todosth給他更少的自由…

27._

_from從…中醒來

28.

thehopeof

懷著……希望29.__rice出口大米30.

theglobe

全球，全世界31.makeitpossible_________…使…成為可能2021/5/916Asayoungman,hesawthegreatneedforincreasingthericeoutput.Atthattime,hungerwasadisturbingprobleminmanypartsofthecountryside.Whenhewasyoung,heknowhowimportantitwastoproducebiggerricecrops.=itisimportantto…=doingsth.isimportant/ofgreatimportanceDuringhisearlyyears,muchofthecountrysidewastroubledbyhunger.=bebadlyinfluenced/affectedbyhaveabadeffecton…2021/5/917Usinghishybridrice,farmersareproducingharveststwiceaslargeasbefore.Spendingmoneyonhimselforleadingacomfortablelifealsomeansverylittletohim.Astheyusehishybridrice,farmersareproducingtwiceasmuchriceasbefore.Heisnotinterestedin/careslittleaboutbuyingthingsforhimselforhavinga…2021/5/918Justdreamingforthings,however,costsnothing.Itdoesn’tcostanythingtodreamforsomething.2021/5/919A3B篇WhatisCA?WhatarethethreeprinciplesofCA?HowdoesCAhelpreducesoildamage?Whatarethefunctionsofcovercrops?Whatistherotationofcrops?2021/5/920Itismeanttokeepsoilhealthy,developsustainablefarming,andpreventthedamagingoveruseofland.Gainingpopularity…,CAaimstohelpfamerskeeplandhealthyandproductiveby…becomepopular2021/5/921ControltillageWhatistillage?turnovernutrientcurrentunusableByavoidingtilling,organicsoilmattermayactuallybenefitascroppiecesformaprotectivesurfaceoverthesoil.2021/5/922covercropsThesecropspreventwaterandsoillossby…Covercropsalso…2021/5/923Bycyclingcropsthatneeddifferentnutrientsthroughthesamefield,thesoil…2021/5/924Ⅰ.statisticssunburntoutputcirculatednationalitystruggleddecaderegretThereforenutritionⅡ.A)1.根據(jù)2.buildup

3.幸虧，由于4.leadto5.對…感到滿意6.focuson7.寧愿，寧可8.keep…freefrom/of9.擺脫，除去10.withthehopeof1.withthehopeof2.leadto3.buildup4.wouldrather5.keepfreefrom6.befocusedon7.wassatisfiedwith8.Accordingto9.Thanksto10.ridof2021/5/9252021/5/926Ⅰ.

underlinesummaryexportsbacteriachemical

expands

Ⅱ.productionhungrydisturbingfreedomequipmentoccupationconfusingdiscoverycommentsreducedⅢ.morethancaredforasasputbackdoneresearchon2021/5/927_____thepasthalfcentury在過去的半個世紀期間______fertilizers化學(xué)肥料

______useof…的長期使用cause______to對…造成傷害______off洗掉food_____食品供應(yīng)______cancer導(dǎo)致癌癥In______另外，此外turnto_____farming轉(zhuǎn)向有機農(nóng)業(yè)

____on集中…于____soil________disease使土壤免受疾病的影響

every_________每隔幾年12.make______readyfor使…為做好準備13.

putdown_____扎根14.avoid______避免做某事2021/5/928Whataresomeoftheproblemscausedbychemicalfertilizers?Inaddition,fruit,vegetablesandotherfoodgrownwithchemicalfertilizersusuallygrowtoofasttobefullofmuchnutrition.化肥帶來的問題有哪些呢？另外，施過化肥的水果、蔬菜和其他食物通常生長得過快而營養(yǎng)不足。過去分詞作定語2021/5/9293.Cropssuchaspeasorsoybeansputimportantmineralsbackintothesoil,makingitreadingforcropssuchaswheatorcornthatneedrichandfertilesoil.像豌豆或者大豆這樣的農(nóng)作物將重要的礦物質(zhì)帶回土壤，從而使之適宜于種植要求土壤肥沃的農(nóng)作物比如玉米或者小麥。現(xiàn)在分詞做定語2021/5/9304.Organicfarmersalsoplantcropstousedifferentlevelsofsoil,forexample,plantingpeanutsthatusethegroundsurfacefollowedbyvegetablesthatputdowndeeproots.有機耕作的農(nóng)民還種植多種農(nóng)作物來利用不同層次的土壤。比如，他們先種植生長于淺層土壤的花生，然后再種植生根于深層土壤的蔬菜。過去分詞作定語2021/5/931takeplaceturnupset

offgetawaywithcutdownbringupaccountforbreakoutratherthansettledownmoveoffcomeacrosscarryonbuildup發(fā)生出現(xiàn)，到場，調(diào)大出發(fā)，動身，使爆炸不因…受懲罰砍倒，削減，刪節(jié)撫養(yǎng)，培養(yǎng)，教育，提出是…的原因，解釋爆發(fā)，突發(fā)與其，不愿定居，平靜下來，專心于離開，啟程，出發(fā)偶然遇見繼續(xù)，堅持逐漸增強，建立，開發(fā)2021/5/932DearMr.Smith,I’mwritingtoinviteyoutojoinusintheEnglishpoetryrecitalcompetitiononJuly4.thecompetitionisgoingtotakeplaceonthesecondflooroftheteachingbuildingfrom7p.m.to9p.m.,duringwhichtimeparticipantswillrecitetheirfavoriteEnglishpoems.ThosewhowintheprizeswillsharetheirexperienceinlearningEnglish.Itwouldbeagreatpleasureifyoucouldcomeandbeoneofthejudges.I’msurewewillhaveawonderfultimetogether.Lookingforwardtoyourreply.Yourssincerely,LiHua2021/5/933ButMomrefusedtogiveup.“I’msuresheisstillins