九年级英语上册 unit 2 topic 2 all these problems are very serious section b导学案（新版）仁爱版

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1、Unit2Topic2Alltheseproblemsareveryserious【学习目标】谈论森林和水资源的重要性，培养学生的环保意识。【预习案】一、读1a，回答1b.二、在文中找到并划出下面的短语1.刮大风____2.伴有很多沙尘_________3.走在路上______________________________4.刚才_______________________________________5.砍伐太多的树木_______________________________6.造成沙尘暴___________________________________7.结

2、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____________________________________14.需要努力工作_______________

3、_________________15.形成_______________________________________16.颁布法律___________________17.记得去关水龙头________________18.循环利用废水_________________【探究案】在文中划出下面的句子并分析1.Whatbadweather!译：____________________________________总结：What引导的感叹句---a.What+形容词+不可数名词/可数名词复数！b.What+a/an+形容词+可数名词单数！练习：1）多么繁忙的一天呀！2）

4、多么大的雪呀！_______3）多么艰苦的工作呀！_4）多么轻松地工作啊！5)多么美丽的花呀！____________________2.Asaresult,alotofrichlandhaschangedintodesert.译：________________________________________点拨：change…into…（把…变成…）=turn…into…练习：1)加热能使水变成蒸汽。Heat______________water________steam.2)他们正在使沙漠变成农田。They________________desert________fa

5、rmland.3)CouldyouchangethisarticleintoEnglish?译：__________________________________________________3.Treescanalsostopthewindfromblowingtheearthaway.译：___________________________________________Theycanalsopreventthewaterfromwashingtheearthaway.译：_______________________________________Stopfact

6、oriespouringwastewaterintorivers.译：____________________________________________________点拨：stopsb./sth.(from)doingsth.=preventsb./sth.(from)doingsth.---阻止…做某事(from可以省略)链接：同义词组keepsb./sth.fromdoingsth.---阻止…做某事（from不能省略）练习：1)大雨使我们无法外出。a.____________________________b.______________________c.__

7、_______________2)昨天我因病没法去游泳。a.____________________________b.______________________c._________________4.Cuttingdowntreesisharmfultohumanbeings,animalsandplants.译：________________________________思考：cuttingdowntrees是________词短语在句子中作______语，谓语用______数。练习：1)散