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1、仁爱英语九年级上册Unit2Topic2导学案SectionA学习目标：1.谈论森林和水资源的重要性，培养学生的环保意识。2.继续学习不定代词的用法。学习重点：不定代词的用法。学习过程：一、自主学习A.听说准备1.同学们要学会拼读和识记SectionA单词。2.听1a录音，勾画出难读的单词或句子。注意模仿语音语调B自学内容1在文中找到并划出下面的短语1.刮大风2.许多、大量_____3.走在街上_______________________4.刚才____________________________
2、______5.砍伐太多的树木______________6.造成沙尘暴_________________________7.结果_________________________8.大量富饶的土地___________________________9.变成沙漠_______________________10.阻止大风刮走泥土__________________11.阻止流水冲走泥土_____________12.对人类有害_______________________13.绿色长城________
3、_____________14.灭绝、消失_________________________15.形成________________________二、要点讲评1.Asaresult,alotofrichlandhaschangedintodesert.译：_______________________________________点拨：change…into…（把…变成…）=turn…into…练习：1)水变成蒸汽。Waterhaschangedintosteam.2)Couldyouchange
4、thisarticleintoEnglish.译___________________2.Treescanalsostopthewindfromblowingtheearthaway.Theycanalsopreventthewaterfromwashingtheearthaway.译：_______________________________________40点拨：stopsb./sth.(from)doingsth.=preventsb./sth.(from)doingsth.---阻止…做某
5、事(from可以省略)同义词组keepsb./sth.fromdoingsth.---阻止…做某事（from不能省略）练习：Weshouldstop/preventhumansfrom____(destroy)theenvironment.3.Cuttingdowntreesisharmfultohumanbeings,animalsandplants.译：________________________________注意：cuttingdowntrees是动名词词短语在句子中作主语，谓语用单数。Eg
6、.Smokingisbadforourhealth.5.Althoughwehavebuilt“TheGreatGreenWall”,westillneedtodosomethingtoprotecttheenvironment.译_____________________________________________点拨：although是连词，有“虽然，尽管”和“不过，然而”两层意思，引导让步状语从句，可以和though互换，although较正式，though更为口语化，使用更普遍些。注意：al
7、though引导的从句不能与but,however同时连用，但常与yet,still连用。练习：虽然他老了，但是他仍然继续努力工作。Althoughhewasold,hestillworkedhard.常见的不定代词用法：somebody,someone,something,somewhere一般情况下用于肯定句anybody,anyone,anything,anywhere一般情况下用于否定句和疑问句none,nobody,nothing,nowhere表否定含义everybody,everyone,
8、everything,everywhere可用于各种句式三、达标测评（A）用someone,something,anything,somewhere,anywhere填空。1.Lily,wouldyoulike___________todrink?2.Cindyisverybusynow.Sheneeds_______tohelpher.3.Isthere_________wrongwithyourcomputer?4.Jimlookedf
