必修四 UNIT 2 Using language

人教课标版高一必修4Unit2 ReadingonP14 Whatisthesubstanceweputonthesoilwhichmakescropsgrow Itisfertilizer Howmanykindsoffertilizersdofarmersuse Therearetwokinds Theyarechemicalfertilizersandnaturalones Whichkinddofarmersusewhentheyaredoingorganicfarming Doyouknowaboutorganicfarming ORGANICFARMINGOrganicfarmingissimplyfarmingwithoutusinganychemicals 1 Whyarechemicalfertilizerssopopularinfarmingtoday I Readthepassageandanswerthefollowingquestions Theyareagreatwaytostopcropdiseaseandincreaseproduction Comprehending 2 Whatproblemscanbecausedbyusingchemicalfertilizers Theycandamagethelandbykillinghelpfulbacteriaandpestsandbystayinginthegroundandundergroundwaterforalongtime Theydamagepeople shealthbybuildingupintheirbodiesandleadingtocancerorotherillnesses 3 Whatisorganicfarming Organicfarmingmeansgrowingcropswithoutusinganychemicals 4 Whatisthemainreasonforusingorganicfarmingmethods Themainreasonforusingorganicfarmingmethodsistogrowgoodfoodandtoavoiddamagingtheenvironmentorpeople shealth II Readthetextandfillintheblanks production bacteriaandpests nutrition Goal grass natural thekindofcrop differentlevels Inwhatconditiondoyouthinkgreenfoodgrow Theadvantagesofgreenfood dirtyairdirtywatersuppliesinindustrialareasmanychemicalfertilizers clean freshaircleanwatersuppliesawayfromindustrialareasfreeofchemicalfertilizers Mainideaofthepassage Chemicalfertilizerscancausemanyproblems soorganicfarmingisbecomingmorepopular Long termuseofchemicalfertilizerscancausedamagetothelandandpeople shealth Farmersandcustomersturntoorganicfarming Othermethodstokeepthesoilfertile Problemscausedbychemicalfertilizers P1 P2 P3 P4 ORGANICFARMING Structureofthetext Iusingchemicalfertilizersforalongtimecanhurtthelandandalsopeople shealthIIProblemcausedbychemicalfertilizers 1 Damagethelandbykillingthehelpfulbacteriaandpestsaswellastheharmfulones 2 Leadtocancerorotherillness 3 Foodgrownwithchemicalfertilizerslookbeautiful butinsidethereisusuallymorewaterthanvitaminsandminerals Organicfarmingisbecomingmorepopularwithsomefarmersandmanycustomersafterthesediscoveriescameout IVOthermethodstokeepthesoilfertile Dothejob Persuadethefarmersinourcountytogrowthecropsbyorganicfarmingwiththeknowledgelearnt Whatisorganicfarming Whatfertilizershouldtheyuse Why Howtoplantthedifferentcrops Languagepoints 1 leadto用法 寓词于境 阅读下列句子 注意leadto的意思和用法 1 Hiscarelessnessledtotheaccident 2 Thistestisobviouslybadbecauseitleadstoincorrectlearning 3 Toomuchworkandtoolittlerestoftenleadstoillness 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 ledto leadsto 2 focus用法 猜一猜 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 a thething person situation etc thatpeoplepayspecialattentiontob apointordistanceatwhichtheoutlineofanobjectisclearlyseenbytheeyeorthroughalensc topointacameraatsomething andchangethecontrolsslightlysothatyoucanseethatthingclearlyd togivespecialattentiontooneparticularpersonorthing ortomakepeopledothis c a b d 归纳总结 focus作名词 意为 焦点 中心点 作动词 意为 集中 聚焦 常构成短语focuson 意为 集中 注意力 精力等 于 即学即练 翻译下列句子 1 Becauseofhisstrangeclothes heimmediatelybecamethefocusofattentionwhenheenteredtheoffice 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 keep freefrom 远离 或 避免 keepfreefromemotionalreactions避免激动的反应keepfreefromrestrictions避免受到限制 4 Cropssuchaspeasorsoybeansputimportantmineralsbackintothesoil makingitreadyforcropssuchaswheatorcornthatneedrichandfertilesoil 分析 本句结构比较复杂 其主干结构为 主句 Cropsputimportantmineralsbackintothesoil 状语 makingitreadyforcrops 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 分析 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 其中betweencrops和intheground作地点状语 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 Exercises I 根据下列各句句意及所给单词的首字母或汉语提示 写出所缺单词的正确形式 1 Thenewmodelwillgointop nextyear 2 Becauseofhispoorn hehasgrownweakerandweaker nutrition production 3 Thosecountriesarerichin 矿物的 resources 4 Newscientificd arebeingmadeeveryday 5 Thegroupproducesamonthly 摘要 oftheirresearch summary mineral discoveries II 用适当的介词填空 1 Costshavebeenreduced 20 overthepastyear 2 Youcanfocusyourtelescope thatdistanttelevisiontower 3 IhopeIhaven tkeptyou yourwork by on from 4 Hemadenocomments whatIsaidatthemeeting 5 Greenfood isgrownaway industrialareasanddirtywatersupplies from on about