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必修四二单元学案
Unit2Workingtheland
Reading—Apioneerforallpeople（period2）
Previewplan（预习案）
Ⅰ.Wordsaboutagricultureandfarming
在田间工作从事研究工作在过去的五十年里
种植杂交水稻成为农业先驱产量高
出生在一个贫苦家庭一生致力于……增加水稻产量
.寻求做某事的途径传播知识摆脱饥饿
对……感到满意很少关心……把钱花在……
过着舒适的生活有时间从事喜欢/宁愿做某事
TypicalSentence
[原句背诵]DrYuanLongpinggrowswhatiscalledsuperhybridrice.
本句是由连接代词引导的从句，在从句充当成分。
[例句背诵]Amoderncityhasbeensetupinwhatwasawastelandtenyearsago.
[仿写背诵]wecan’tgetseemsbetterthanwehave.
Guidingplan（导学案）
Ⅱ.Teachingprocedures
Warmingup（groupwork）
Answerthequestionsingroupsbyusingexpressionsbelow.
1.HowmuchdoyouknowaboutDr.YuanLongping?
Usefulexpressions
Sb.wasbornin…
Sblookslike…
Sb.graduatedfrom…
Sb.befondof/begoodat/beinterestedin
Sb.beabout…metrestall
ababyface/chubbyface/roundface/
big/bright/dark/warm/attractiveeyes
sb.bethin/fat/muscular/short/tall
ListeningListentothetextcarefullyandfillintheblanks.
Appearance:
________faceandarmsandhis________,________body
In1974,hebecamethefirst________________intheworld.
Achievement:
Hegrowswhatiscalledsuper________________.
ReadingTask1Predicting
Readthetitleofthepassageandlookatthepicturebelowthetitleandtrytoanswerthefollowingquestions.
（）1.whatkindofwritingdoesthepassagebelongto?
A.traveljounalB.novelC.essayD.biography
（）2.Whatdoyouthinktheword“poineer”inthetitlerefersto?
Task2Skimming
ChoosethemostsuitableheadingfromA-Dforeachparagraph.Therearetwoextraheadingswhichyoudonotneed.
Headings
Paragraphs
A.Hecareslittleaboutspendingthemoneyonhimselfandwouldratherkeeptimeforhishobbies.
B.Hebecamethefirstagriculturalpioneerintheworldtogrowricethathasahighoutput.
C.Dr.Yuangrowswhatiscalledsuperhybridrice.
D.DrYuan‘sdreams.
E.Hecareslittleaboutspendingthemoneyonhimselfandwouldratherkeeptimeforhishobbies.
F.Bornin1930.Dr.YuangraduatedfromSouthwestAgriculturalCollegein1953.
Suggestedanswers:
Paragraph1
Paragraph2
Paragraph3
Paragraph4
Groupwork:
Canyoudescribeeachparagraphwithonlyoneword?
P1:
P2.P3.P4.
Task3DetailedReading
1.ReadingthepassagecarefullyandfindoutthedetailedinformationaboutDr.YuanandhisSuperhybridrice.
InformationaboutYuanLongping
birth
inBeijingin
education
graduatefromin1953
personality
considerhimselfasa;careaboutspendingmoneyonhimselfandbeingfamous;
hobby
listentotheviolin,playmah-jong,swimmingandreading
dream
1.riceplantsasassorghum;eachearofriceasasanearofcornandeachgrainofriceasasapeanut.
2.hisricetobegrownallovertheworld
informationaboutYuan’ssuperhybridrice
capacity
Producemoreofthecropinthesamefields;morethanofthericeinChinafromthishybridstrain
application
besidesChina,beingcirculatedinIndia,Vietnamandotherlesscountriestoincrease
theirriceharvest
contribution
riceharvestsbeingproducedtwiceaslarge;ofpeoplefedfromjustofthefarmlandinChina;theUNriddingtheworldofhunger
future
thericebeinggrownallovertheworld
Homeworkplan（groupwork）
CompareDr.YuanLongpingandJaneGoodallandfindtheirsimilarities.
Suggestedanswers
1.
2.
3.
4.
5.
【教师寄语】Timetriesall.路遥知马力，日久见人心。
Unit2Workingtheland（period3）
1.扎实掌握1个单词,2个短语,2个句式；
2.自主学习,合作探究;学会分析与总结的方法,并能学以致用；
【使用说明及学法指导】
1.老师引领学生积极动脑思考，结合所学知识自主构建知识体系。
2.探究总结疑难点并学以致用。
3.部分词语用法参照练习册。
【课内探究】
1.In1974,hebecamethefirstculturalpioneerintheworldtogrowricethathasahighoutput.
【考点】当名词被序数词，最高级修饰时，需用不定式做后置定语。
【句式仿写】他总是第一个到教室最后一个离开。
________________________________________________________________________
2.Usinghishybridrice,farmersareproducingharveststwiceaslargeasbefore.
【观察思考】
（1）Thisbuildingistwicehigherthanthatone.
（2）Thisbuildingistwiceashighasthatone.
（3）Thisbuildingistwicetheheightofthatone.
（4）In2010,thenumberofthestudentswhohadmobilephoneswas10timesthatof2004.
（5）In2010,thenumberofthestudentswhohadmobilephoneswas10timeswhatitwasin2004.
【归纳】倍数表达法：
（1）A+谓语动词+倍数+_____________+_________+B
（2）A+谓语动词+倍数+_______+__________________+________+B
（3）A+谓语动词+倍数+_________+_____________+______+B
（4）A+谓语动词+倍数+____________+______+B
（5）A+谓语动词+倍数+___________引导的名词性从句
用至少三种方法翻译句子:
这个房间是那个房间的三倍大。
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
【知识运用】
1.Nowadayssomeparentsregretnot____moretimewiththeirkidswhentheywereyoung.
A.tospend B.spendingC.spendD.beingspent
2.IfIruledtheworld,Iwould____theworld ______ wars.
A.getridof,by B.beridof,by C.rid,of D.getfid,of
3.ThenewstadiumbeingbuiltforthenextAsianGameswillbe _____thepresentone.
A.asthreetimesbigas B.threetimesasbigas
C.asbigasthreetimes D.asbigthreetimesas
4.—Thelastone__________paysthebill.—Agreed!
A.arrivedB.arrivesC.toarriveD.arriving
【能力提升】
Translate：
在过去的五十年里，袁隆平一直努力寻找不用扩张土地面积来增加水稻产量的方法。
后来他成了世界上第一个种植杂交水稻的人。
多亏了他的努力，农民们种出的粮食是以前的两倍,使得很多人摆脱了饥饿。
他宁愿把精力集中在自己的爱好上，因此，他对自己的生活感到很满意。
_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Unit2Workingtheland--ChemicalorOrganicFarming?
Section3Usinglanguage（period4）
学习目标
1.通过对文章的认真阅读，理解chemicalfarming和organicfarming的区别。
2.通过自主学习、合作探究，掌握课文中重点短语、理解长难句型。
从课文中找出以下单词和短语。
1细菌2.adj.化学的3n.生产
4.n.总结，摘要5.n.评论，议论
）对…造成损害7）.导致;造成（后果）;通往
8.集中（注意力、精力）于9.每隔几年
10.避免做…11幸亏，由于12.对……感到满意13对……感到困惑14.减少到……
15.（vt./n.遗憾、惋惜）（adj.后悔的；遗憾的）（adv.后悔地；遗憾地）16.（n.发现、发觉）-（vt.发现）
17.（adj.化学的n.化学药品）（n.化学家、药剂师）（n.化学）
18.（n.生产、制造）（v.生产、制造）-（n.产品、产物）
19.n.营养adj.有营养的
【探究案】
Step1:
Warmingup
1.Haveyoueverbeentothecountryside?
2.Doyouknowhowtoworkonafarm?
3.Ifyouarealandowner,youwanttogrowsomekindsofcrops,whatwillyoudo?
StepIIReading
Task1Scanning
1.Whatisorganicfarming?
2.Whatischemicalfarming?
3.Whatisthegoalofusingorganicfarmingmethods?
Task2Skimming
Findoutthemainideaofthesefourparagraphs.Matchthelines.
P.1Othermethodstokeepthesoilfertile
P.2Farmersandcustomersturntoorganicfarming.
P.3Problemscausedbychemicalfertilizers
P.4Long-termuseofchemicalfertilizerscancausedamagetothelandandpeople’shealth.
Mainideaofthepassage.
_________________cancausemanyproblems,so________________isbecomingmorepopular.
Task3Carefulreading
1.Readthesecondparagraphandanswerthefollowingquestions
Whatproblemscanbecausedbyusingchemicalfertilizers?
Inotherwords,what’sthedisadvantagesofchemicalfertilizers?
2.Readthethirdparagraphandwritedowntheadvantagesoforganicfarming.
StepIIILanguagepointsinthepassage
1.Thesechemicalsinthefoodsupplybuildupinpeople’sbodiesovertime.
buildup 增强;建立；开发
Hardworkingconditionsbuildupcharacter.艰苦的工作条件能磨练人的性格。
Hebuiltuphisstrengthagainafteranillness.他病后逐步恢复体力。
2.Manyofthesechemicalscanleadtocancerorotherillnesses.
leadto:
导致；造成（后果）
Toomuchworkandtoolittlerestoftenleadtoillness. 过量的工作和过少的休息会引起疾病。
AllroadsleadtoRome. 条条大道通罗马。
用leadto的适当形式完成句子。
（1）.Studentsshouldalwaysrememberthathardworkisthemainwaywhich________success.
（2）.Thebadweather________aterribleaccidentafewdaysago.
[联想]resultin引起（某种结果）、使获得（某种成果）、结果……。
如：
Theaccidentresultedintwodeaths.
resultfrom由……造成、因……而产生。
如：
Sicknesssometimesresultsfromeatingtoomuch.汉语意思________________________________
含介词to的东侧短语：
cometo来到，苏醒referto参考，涉及lookforwardto盼望payattentionto注意stickto坚持devoteto致力于turnto求助于getcloseto靠近
3.Theyfocusonkeepingtheirsoilrichandfreeofdisease.译________________________________
focuson:
集中（注意力，精力等）于
.focusone’sattentionon集中注意力于
focusone’smindon把心思集中到……上
Youshould_______yourattention______yourwork.你应该把注意力集中在你的工作上。
Heneedsto_______more________hiscareer.他需要更集中于他的事业。
4.reducevt.减少，减缩
Theyhavetoreduceexpensesthisyear.他们今年必须削减开支。
搭配reduceto减到，降到reduceby减了，降了
Pleasereduce______2%offtheinvoiceprice.
Thewaterwillfreezewhenthethermographreduces_____zerocentigrade.
5.Thisalsokeepstheair,soil,waterandcropsfreefromchemicals.
这样还可以让空气、土壤、水以及农作物不受化学物质的污染。
keep…freefrom/of…使……免受（影响/伤害等）
Exercisecankeepusfreefromdisease.锻炼能使我们摆脱疾病。
TheUnitedNationistryingto_______theworld____________thethreatofwar.
联合国正试图使世界免受战争的威胁。
6.Cropssuchaspeasorsoybeansputimportantmineralsbackintothesoil,makingitreadyforcropssuchaswheatorcornthatneedrichandfertilesoil.
[分析]①本句结构比较复杂。
其主干结构为:
主句________________________
+结果状语_______________________________________
②状语中‘make’的宾语是________,指代________,‘readyforcropssuchaswheatorcorn’作_______________成分，‘thatneedrichandfertilesoil’作___________成分。
7.Someorganicfarmerspreferplantinggrassbetweencropstopreventwindorwaterfromcarryingawaythesoil,andthenleavingitintheg
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