教育专题：九年级英语仁爱版上_Unit2_Topic_2_SectionB_说课课件.ppt

Topic 2 All these problems are very serious.Wu Qiong Section BUnit 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o 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o 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o继续学习不定代词，不定副词的用法。o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o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.o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o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；o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；o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oStep 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。oStep 2：出示画面，引入1c.oStep 3:听录音，回答问题，完成1a.oStep 4:巩固，练习。sandstormmany trees cut down trees forest gone wash the earth away change into desertsandstorms come into beingStep 3:听录音，回答问题，完成1a.1.change sth.into sth.把变成2.change water into steam.3.2.stop/prevent sb./sth.(from)doing sth.阻止某人/某物做某事4.keep sb/sth from doing sth.5.The heavy snow stopped/prevented the visitors(from)leaving the top of the mountain.6.3.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.7.Although/Though he is very tired,he goes on with his work.8.Although the question is difficult,he can still answer it.Language points 文化背景知识文化背景知识: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 B1.change into 2.prevent/stop(from)doing sth.3.keep sb.from doing sth.3.although/though4.human being 用下面的单词补全句子用下面的单词补全句子something,anything,somebody,anybody,nothing,everybody,nobody,everything1.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 longer3.We must do something to stop the river from _too dirty.A.to get B.got C.gettingB.4.How many students are there in the classroom?C._.I dont know where they have gone.D.A.No one B.None C.Nobody谢谢!