仁爱英语九年级上Unit2Topic2SectionA

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1、SectionAAlltheseproblemsareveryserious.Unit2Topic2学习目标：1、熟记新单词，学会运用新短语；2、学习不定代词和不定副词。情感目标：了解沙尘暴的形成及其危害，认识树木的重要性，提高环保意识。Review:Readthenewwordsandreviewthepollutionaroundus.waterpollutionnoisepollutionairpollutionsoilpollutionlightpollutionlitterwhitepollutionforestLead

2、inWhathappenedtotheforest?Peoplehavecutdowntoomanytrees.Theforesthasgone.What’sworse,theforesthaschangedintodesert.n.沙漠v.舍弃、遗弃Thewindisblowingstronglywithlotsofsand,wecallitsandstorm.n.沙n.沙尘暴Washtheearthawaymanytreeschangeintodesertforestgonesandstormscomeintobeingcu

3、tdowntrees(4)(1)(5)(3)(6)(2)思考：Howdoesthesandstormcomeintobeing?形成、产生Self–study：（小组讨论，完成自主学习）1、Enjoytheflash35-1a.swfandchoosethebestanswer.2、Changethewordintocorrectforms.3、Readthedialog,underlinethephrasesandtranslatethem.1、Theboyandgirlsaretalkingabout_____B2、【词形变换

4、】变为名词：pollute_________变反义词：outside_________变同义词：prevent_________；though__________；rubbish_________pollutioninsidestopalthoughlitter展示：Showmeyouranswers.3、短语翻译1.刚才_________2.不能看见任何东西____________3.砍伐太多的树木_______________4.结果______5.大量富饶的土地_______________6.变成_____________

5、_____7.阻止大风刮走泥土____________________________8.阻止流水冲走泥土____________________________9.对……有害__________________________10.人类_____________________justnowcan’tseeanythingcutdowntoomanytreesbeharmfultostopthewindfromblowingtheearthawaychange…into…asaresultjustnowstopthewaterf

6、romwashingtheearthawayhumanbeingTreescanstopthewindfromblowingtheearthaway.Treescanalsostopthewaterfromwashingtheearthaway.Read1aandcompletetrees’functionsB、AlotofwatercanbesavedbyforestsA、Treescanstopthewindfromblowingtheearthaway.C、Treescanalsostopthewaterfromwashin

7、gtheearthaway.Group–work：（小组讨论，分析以下句子，并总结短语的用法）展示学生成果：（叫同学讲解并用投影仪展示讨论结果）2、Asaresult,alotofrichlandhaschangedintodesert.结果，许多肥沃的土地已经变成了沙漠。点拨：a)change…into…（把…变成…）=turn…into…把…..(转)变成…..e.g：PleasechangeEnglishintoChinese.请把英语变成汉语。练习：我们可以把冰变成水。Wecan_______ice_____water.1

8、、Whatbadweather!点拨：What引导的感叹句---a.What+形容词+不可数名词/可数名词复数！（不可数名词如:news;advice;weather;water）b.What+a/an+形容词+可数名词单数！练习：1）多么繁忙的一