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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,*,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,Topic 2 All these problems are very serious.,Wu,Qiong,Section B,Unit 2,说课内容,教材分析,学情分析,教学目标,教学重、难点,教法与学法,教学过程,教材分析,本话题承接第一部分的内容，介绍了污染,给人们生活所带来的危害。不定代词和不定副词的用法是这一部分的语法重点。,学情分析,九年级学生经过两年多的英语学习，已具有一定的英语综合能力，也积累了一定的英语词汇量，且这一部分内容切近生活，同学们比较感兴趣。能很快融入学习，因此本课学习起来不会太难。,教学目标,继续学习不定代词，不定副词的用法。,谈论森林和水资源的重要性，培养学生的环保意识。,教学重、难点,重点：,掌握生词和词组：,prevent,preventfrom,和,although,理解,human being.,掌握句子：,1.thats bad,but how can that affect the weather.,2.Trees can stop the wind from blowing the earth away.,3.They can also prevent the water from washing the earth away.,难点：应用所学知识，培养学生综合运用语言的能力，谈论环保问题。,教法、学法,利用教材插图理解有关污染的对话或文章，使学生在学习过程中集中注意力；,利用有关话题，拓展学生的视野，发展学生个性，提高学习兴趣；,利用小组合作学习，使学生集思广益，发散思维，提高学习能力。,学习过程,Step 1:,用多媒体呈现多种环境污染画面，两人一组进行问答，谈论污染的各种问题。,Step 2,：出示画面，引入,1c.,Step 3:,听录音，回答问题，完成,1a.,Step 4:,巩固，练习。,sandstorm,many trees,cut down trees,forest gone,wash the earth away,change into desert,sandstorms come into being,Step 3:,听录音，回答问题，完成,1a.,change sth.into sth.,把,变成,change water into steam.,2.stop/prevent sb./sth.(from)doing sth.,阻止某人,/,某物做某事,keep sb/sth from doing sth.,The heavy snow stopped/prevented the visitors(from)leaving the top of the mountain.,3.although,相当于,though,意为“虽然，尽管”引导让步状语从句，不能同时使用,but,，但后可用,yet,或,still,等。加强语气时，通常说,even though,，而不说,even although.,Although/Though he is very tired,he goes on with his work.,Although the question is difficult,he can still answer it.,Language points,文化背景知识,:,绿色长城,绿色长城即三北防护林工程,是世界上最大的植树造林工程,始建于,1978,年,.,该工程跨东西部、华北北部和西北大部分地区，包括我国北方,13,个省（自治区、直辖市），东西长,4 480,千米，南北宽,560,到,1 460,千米，总面积,4 069 000,平方千米。在国际上被誉为“中国的绿色长城”。,沙尘暴,沙尘暴是风挟带大量尘沙、干土而使空气混浊，天色昏黄的现象。主要由冷空气南下时大风卷扬尘沙所致。过度开发自然资源、过量砍伐森林、过度开垦土地是沙尘暴频发的主要原因之一。,Topic 2 Section B,change into,prevent/stop(from)doing sth.,keep sb.from doing sth.,although/though,human being,用下面的单词补全句子,something,anything,somebody,anybody,nothing,everybody,nobody,everything,1.Look!Can you see_behind the tree?,Yes,I think its a cat.,2.Do you know _in the shop?,No,I dont.,3.There is _in the room.Its empty.,4.Could you give me _to drink?,Sure.Here you are.,5.Jane got _ready for her birthday party.,单项选择,1.Would you like _to read?,Yes,please.A story book.,A.Something B.anything C.nothing,2.Summer is coming.The days are getting_.,A.long and longer B.more and more long,C.longer and longer,3.We must do something to stop the river from _too dirty.,to get B.got C.getting,4.How many students are there in the classroom?,_.I dont know where they have gone.,A.No one B.None C.Nobody,谢谢,!,
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