Unit+2+Topic+2+Section+A++导学案 仁爱版英语九年级上册

秋季学期九年级上册导学案（仁爱版）Unit2Topic2SectionA【学习目标】学习砍伐树木带来的危害。学习怎样阻止沙尘暴和节约用水。【自学新词汇】写出下列单词的英文及词性。沙暴（）____2.沙，（）____转换成（）____4.沙漠，遗弃（）____人（）____6.虽然，尽管（）____7.减少，减轻（）____8.彻底地，完整地（）____二、在文中找到并画出下面的短语：1.好大的风啊！______________2.过去的几年，________________3.砍到许多树，________________4.结果，________________5.陆地变成沙漠，________________6.阻止风把土地吹走________________7.对...有危害，________________8.吹走，________________9.洗掉，________________【重点句型】1.结果，很多肥沃的土地都变成沙漠了。Asaresult,alotofrichlandhaschangedintodesert.2.树木可以防止土壤被风刮走。Treescanstopthewindfromblowingtheearthaway.3.砍伐树木对人类、动物和植物是有害的。Cuttingdowntreesisharmfultohumanbeings,animalsandplants.【知识讲解】1.Peoplehavecutdowntoomanytrees.人们砍伐了太多的树。cutdown砍倒,砍伐;降低,减少cutup切碎cutinto切成2.Asaresult,alotofrichlandhaschangedintodesert.结果,大量的肥沃土地变成了沙漠。change…into…=turn…into…把……变成……Eg:Thecoldweatherchangedwaterintoice.寒冷的天气把水变成了冰。3.Treescanstopthewindfromblowingtheearthaway.树木能防风固土。Theycanalsostopthewaterfromwashingtheearthaway.它们也可以防止水土流失。★stop/preventsb./sth.(from)doingsth.阻止某人/某物做某事，避免某人/某物做某事(from可以省略)★keepsb./sth.fromdoingsth.阻止某人/某物做某事(from不能省略)4.Andalotofwatercanbesavedbyforests.森林可以贮存大量的水分。canbesaved为含情态动词can的被动语态结构。save此处为“贮存,保留,保存”的意思。save作动词时，还有“挽救”和“节约”的意思。Eg:It'sadoctor'sdutytosavepatients'lives.挽救病人的生命是医生的职责。Wemustsaveeverydropofwater.我们必须节约每一滴水。5.Althoughwehavebuilt“TheGreenGreatWall”,westillneedtodosomethingtoprotecttheenvironment.虽然我们修建了“绿色长城”,但我们仍然需要采取措施来保护环境。although与though引导让步状语从句,不能和but、however等连用。6.Peoplehavecutdownsuchalargenumberoftrees…人们砍伐了大量的树……anumberof意为“许多,大量”,修饰可数名词复数。修饰主语时，谓语用复数形式。alotof(=lotsof)与plentyof也有“许多,大量”的意思，它们既可修饰可数名词复数，也可修饰不可数名词。thenumberof意为“……的数量”,修饰可数名词复数。作主语时，谓语用单数形式。Eg:AnumberofvisitorsarevisitingthePalaceMuseum.Thenumberofthevisitorsisabout3,000.大量的游客正在参观故宫，数量大约是3，000人。【巩固练习】I.根据句意，用括号内所给单词的适当形式填空。1.Thewindblew_______(strong)lastnight.2.Treescanstopthewindfrom_______(blow)theearthaway.3.Smokingcanbe_______(harm)toyourhealth.4.Alotofforests__________(go).5.______(cut)downtreesisbadforhumanbeings,animalsandplants.II.单项选择。1.(2022济南中考)——Didyoudo____specialforyourmotheronherbirthday?——Yes.Icookedlongnoodlesforher.A.nothingB.somethingC.everythingD.anything2.Weather____hishealth,andhefallssickfromthe_____ofthefreezingweather.A.affects;affectB.effects;effectC.affects;effectD.effects;affect3.——Oh!What'swrongwithyourleg?——IhurtitwhileI______mountains.A.climbB.wasclimbingC.amclimbingD.haveclimbed4.Thefarmer____alotoftreesandbuiltanewhouse.A.CutdownB.cutoffC.turneddownD.turnedoff5.Therewasnothing____her____dangeroussports.Wedidn’tknowwhattodo.A.Prevent;fromdoingB.toprevent;todoingC.toprevent;fromdoingD.preventing;fromdoing参考答案：一、写出下列单词的英文及词性。（参看单词表）二、在文中找到并画出下面的短语：1.好大的风啊！Whatastrongwind2.过去的几年，thelastfewyears3.砍到许多树，cutdownmanytrees4.结果，asaresult5.陆地变成沙漠，thelandchangedintodesert6.阻止风把土地吹走，stopthewindfromblowingtheearthaway7.对.