2023学年完整公开课版Book4Unit2Usinglanguage 市赛一等奖

Unit2Unit2WorkingthelandUsingLanguageWhatisthesubstance(物质)weputonthesoilwhichmakescropsgrow?Itisfertilizer.

Howmanykindsoffertilizersdofarmersuse?

Therearetwokinds.Theyarechemicalfertilizersandnaturalones.Whichkinddofarmersusewhentheyaredoingorganicfarming?Doyouknowaboutorganicfarming?

OrganicFarming

ORGANICFARMING

Organicfarmingissimplyfarmingwithoutusinganychemicals.1.Scanthepassageandgetthemainidea.Chemicalfertilizerscancausemanyproblems,soorganicfarmingisbecomingmorepopular.2.Skimthepassageandfindoutthemainideaorthetopicsentenceofeachparagraph.3.Findandwritedownthemethodsandadvantagesinthepassage.MethodsoforganicfarmingAdvantagesofmethodsFarmersusenaturalwastefromanimals.Thismakesthesoilricherinmineralsandsomorefertile.MethodsoforganicfarmingAdvantagesofmethods1Farmersusenaturalwastefromanimals.1Thismakesthesoilricherinmineralsandsomorefertile.2Farmersoftenchangethekindofcropineachfieldeveryfewyears.2Changingthecropsrenewsthemineralsinthesoilandhelpsitbecomerichandhealthy.MethodsoforganicfarmingAdvantagesofmethods3Farmersplantcropswithdifferentlengthsofroots.3Thisusesdifferentlevelsofsoil.4Farmerssometimesplantgrassbetweencropsandleaveitintheground.4Thispreventswindorwaterfromcarryingawaysoilandactsasanaturalfertilizer.1.Whyarechemicalfertilizerssopopularinfarmingtoday?Answerthefollowingquestionsafterreadthepassage.Theyareagreatwaytostopcropdiseaseandincreaseproduction.2.Whatproblemscanbecausedbyusingchemicalfertilizers?Theycandamagethelandbykillinghelpfulbacteriaandpestsandbystayinginthegroundandundergroundwaterforalongtime.Theydamagepeople’shealthbybuildingupintheirbodiesandleadingtocancerorotherillnesses.3.Whatisorganicfarming?Organicfarmingmeansgrowingcropswithoutusinganychemicals.4.Whatisthemainreasonforusingorganicfarmingmethods?Themainreasonforusingorganicfarmingmethodsistogrowgoodfoodandtoavoiddamagingtheenvironmentorpeople’shealth.1.Manyofthesechemicalscanleadtocancer...

很多化学成份能导致癌症……

阅读下列句子,注意leadto的意思和用法。

1)Hiscarelessnessledtotheaccident.2)Thistestisobviouslybadbecauseitleads toincorrectlearning.3)Toomuchworkandtoolittlerestoften leadstoillness.[自我归纳]leadto意为“_________________”,后多跟名词或代词。导致、造成(后果)[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.[即学即练]用leadto的适当形式完成句子。1)Studentsshouldalwaysrememberthathardworkisthemainwaywhich_______success.2)Thebadweather_____aterribleaccidentafewdaysago.ledtoleadsto2.Theyfocusonkeepingtheirsoilrichandfreeofdisease.

农民关心的是保持土壤肥沃并且免受病害。根据语境推断focus在下列句子中的含义,并从a-d中找出与每句话中的focus相符合的英文释义。1.Thefocusofthemeetingchangedfrompopulationgrowthtotheeducationofwomen.2.Bringtheobjectintofocusifyouwantaclearphotograph.3.Shetriedtofocushermindonherwork.4.SheturnedthecameraandfocusedonMartin’sface.cabda.thething,person,situation,etc.thatpeoplepayspecialattentiontob.apointordistanceatwhichtheoutlineofanobjectisclearlyseenbytheeyeorthroughalensc.topointacameraatsomething,andchangethecontrolsslightlysothatyoucanseethatthingclearlyd.togivespecialattentiontooneparticularpersonorthing,ortomakepeopledothisfocusn.焦点、中心点

v.

集中、聚焦focuson集中(注意力、精力等)于[翻译]1)Becauseofhisstrangeclothes,he immediatelybecamethefocusof attentionwhenheenteredtheoffice.由于他的奇装异服,所以一走进办公室他便成了大家注意的焦点。2)Focusyourcameraonthosetrees.3)I’msotiredthatIcan’tfocusonanythingtoday.把照相机的焦点集中在那些树上。今天我太累了,精神集中不起来。3.Thisalsokeepstheair,soil,waterandcropsfreefromchemicals.

同时还可以让空气、土壤、水以及农作物不受化学物质的污染。

keep…freefrom远离，避免keepfreefromemotionalreactions

避免激动的反应

keepfreefromrestrictions

避免受到限制

4.Cropssuchaspeasorsoybeansputimportantmineralsbackintothesoil,makingitreadyforcropssuchaswheatorcornthatneedrichandfertilesoil.

像豌豆或大豆这样的农作物将重要的矿物质带回土壤，从而使之适宜于种植要求土壤肥沃的农作物。[分析]①本句结构比较复杂。其主干结构为:主句(Cropsputimportantmineralsbackintothesoil)+状语(makingitreadyforcrops)。②状语中又包含“make+it+形容词”结构和由that引导的定语从句(thatneedrichandfertilesoil)。

5.Someorganicfarmerspreferplantinggrassbetweencropstopreventwindorwaterfromcarryingawaythesoil,andthenleavingitinthegroundtobecomeanaturalfertilizerforthenextyear’scrop.

还有一些有机耕作者喜欢在农作物之间种草，以防止水土流失，并且把草流在地里，从而成为来年农作物的天然肥料。[分析]①本句的主干结构是一个简单句,其结构是:主语(farmers)+谓语(prefer)+并列宾语

(planting...+leaving...)。②其中betweencrops和intheground作地点状语。③两个宾语后面又分别带有一个不定式作目的状语(topreventwindorwaterfromcarryingawaythesoil和tobecomeanaturalfertilizerforthenextyear’scrop)。Whatisthemaintopicoftheconversation?Thepossiblebadeffectsofchemicalfertilizersonthefruitandvegetablesthatweeattoday.Listening1.PaulthinksthatCarrieisnottellinghimthetruth.2.Usingchemicalfertilizersalwaysmakesvegetablesemptyinside.3.Today’sfruitisnotashealthyforpeopleasfruitfiftyyearsago.Listentothedialogueasecondtime.Decideifthefollowingstatementaretrueorfalse.

TFT4.Eatingmorevegetables