Unit 2 Saving the Earth-Topic 1 Pollution has caused too many problems.-Section A-ppt课件-(含教案)-省级公开课-仁爱科普版九年级上册(编号：800a0).zip

Listen to her carefully, answer the questions: 1.What did she do last year? She had a picnic. 2.Where did she go last year? She went to a village. 3.What did she see there? She saw lots of flowers and grass. 2 Work in pairs. Look at the pictures and make up conversations similar to the example with your partner. Example: A: There were lots of flowers and grass when I visited the village last year. B: But now the flowers and grass have gone. A: What has happened here? B: The villagers have destroyed them. lake/fish factory/ pollute hill/ trees farmers/cut down village/flowers and grass villagers/destroy A: There were lots of trees when I visit ed the hill last year. B: But now the trees have gone. A: What has happened here? B: The farmers have cut them down. A: There were lots of fish when I visited the lake last year. B: But now the fish have gone. A: What has happened here? B: The factory has polluted them. Have you ever had a picnic? Kangkang, Jane, Maria and Michael are planning a picnic for Sunday. They will go to the West Hill. What can you see there? We can see bees and butterflies dancing. bee butterfly Is the West Hill beautiful? The flowers and grass have gone! Oh, my goodness. What a mess! Look! There are several chemical factories pouring waste water into the stream. Is it beautiful now? What has happened there? P27 1a mp3 1b Listen to 1a and mark the words with P (Past) or N (Now). _ beautiful _ butterflies _ dirty _ grass _ terrible _ factory _ bees _ fresh _ clean _waste water PPN PN N PPP N 1c Read 1a and complete the sentences in the table. Then retell 1a to your partner. Two years agoNow 1. It was a _. 2. There were _. 3. The air was _ and you could see _. 1. _ have gone. 2. The water is _and smells _. 3. There are several _ pouring _ into the stream. 4. _has changed. beautiful place lots of flowers and grass fresh and the water was clean bees and butterflies dancing The flowers and grass so dirty terrible chemical factories waste water Everything 单项选择单项选择 ( ) 1. Look! There are some boys _ on the playground. A. play football B. are playing football C. playing football D. plays football ( ) 2. Im sorry I cant go shopping with you. I am ill. _ A. What a mess! B. What a shame! C. What a pity! D. B and C ( ) 3. Dont _ water. We must save every drop of it. Sorry, I wont do it again. A. waste B. throw C. play D. leave C D A 用所给动词的适当形式填空或根据汉语意思填空。用所给动词的适当形式填空或根据汉语意思填空。 1. When I entered the room, I saw Maria _ (read) a Chinese book. 2. What a shame! The flowers and trees in the park _ (go). 3. Everything _ (change) in the past few years. 4.Please _the sugar _ the coffee.(倒入倒入) 5.Some villages _(砍倒砍倒) many trees last year. reading have gone has changed pour into cut down What a mess! What a shame! 4.Know the differences between Simple Past and Present perfect. It was a beautiful place. Everything has changed. 1. Some words: bee, butterfly, mess, shame, several, pour, waste, villagers，destroy, pollute, goodness 2. Some phrases: see sb. doing sth. pourinto. 3. Some sentences: There aredoing Homework 1. Recite1a. 2.Finish Section A in your workbook. 3. Preview Section B. Thank you. 1 九年级上册教案设计九年级上册教案设计 Unit 2 Saving the Earth Topic 1 Pollution has caused too many problems Section A .教材分析教材分析 本课是九年级上册第二单元第一话题 SectionA 的第一课时。教学活动包括 1a-2。主活动是 1a。1a 通过对比“West Hill”今昔的环境变化，引出本话题的 污染问题，巩固现在完成时与一般过去时的用法及区别。1b 要求学生能够听懂 一般过去时态和现在完成时态，也就是要分清 1b 所提及的词语所伴随的时间。 1c 则是在阅读之后再找出“西山”所发生的变化。2 通过观察图片内容，结对编 对话，描述污染前后的情况，进一步训练学生口头表达能力和对一般过去时和 现在完成时的运用能力。通过本课的学习，培养学生关注环境问题的意识。 . 教学目标教学目标 1.Knowledge aims： 掌握本课的重点词汇和短语，巩固一般过去时和现在完成时的用法和区别。 能够用一般过去时和现在完成时描述过去和现在的变化。 正确使用 there be sth./ sb. doing sth.来表达“有某人/物正在做某事”。 2.Skill aims: 能听懂描述环境变化的对话，区别一般过去时和现在完成时的用法。 能理解和运用一般过去时和现在完成时来进行听、说、读、写活动。 3.Emotional aims: (optional) 让学生了解环境污染的严重性，并树立环保意识。 4. Culture awareness: (optional) 通过课文的学习，让学生了解环境的变化，关注全球的环境问题。 .重难点重难点 1. Key points: Words and phrases: bee, butterfly, mess, shame, several, pollute, waste, villager, cut down, goodness, pour, see sb./sth. do sth ., see sb./sth. doing sth., cut down, my goodness 2 Sentences: What a shame! / What a mess! The flowers and grass have gone! What has happened here? There be sth./sb. doing sth. There are several factories pouring waste water into the stream. Everything has changed. Grammar: differences between Simple Past and Present Perfect tense. 2. Difficult points： 正确使用 there be sth./sb. doing sth.来表达“有某人/物正在做某事” 。 区别使用短语 see sb./ sth. do sth.和 see sb. / sth. doing sth.。 能正确地以口头和书面形式区别使用一般过去时和现在完成时。 IV. 教具教具 Computer multimedia projector, word cards, blackboard. V. 教学过程教学过程 （设计目的：复习和巩固以前学过的现在完成时和一般过去时） Step 1.复习 1.通过值日报告复习和巩固一般过去时和现在完成时 2.展现多媒体图片，通过回答问题复习一般过去时。 问句：What did she do last year? 答语：She had a picnic. 2.Where did she go last year? 答语：She went to a village. 3.What did she see there? 答语：She saw lots of flowers and grass Step 2. 新课呈现 （设计目的：引入本课主要新单词、词汇同时学习谈论环境改变的句型） 1）教师可通过展示图片学习语法和词汇，教师明确指出左下角图片是去年 的景象，右上角图片是现在的景象，然后通过师生问答引导学生理解图片内容， 学习一般过去时和现在完成时。 T:What can you see in the left picture? Ss: Flowers and grass. T:Yes.There were .(PPT 上呈现 2 中的 Example 部分，教师引导学生用该 部分句型进行回答） Ss: There were lots of flowers and grass when I visited the village last year. T:Can you see flowers and grass in the right picture? 3 Ss: No, we cant. . 2)练习。学生为两人一组，根据 2 中 1,2 小题各两幅图的内容，结合范例进 行替换练习。最后教师随机选取两组学生表演对话。 本环节教授单词时，在句子中边讲解边让学生们猜一猜意思。看谁猜得又快 又准确，给于表扬。其他单词和短语也是一样。 Step 3.继续新课 （设计目的：让学生巩固学习一般过去时和现在完成时的用法以及本堂课所学 生词，提高学生听的能力，为语言输出做准备，进一步发展了学生读和说的能 力） 1）第一次播放 1a 录音，学生对听前预测进行检测。 2）第二次播放 1a 录音，学生完成 1b 部分，教师和全体学生一起核对答案。 3）第三次播放 1a 录音，学生边听边齐声跟读，然后分小组讨论 1c，等同 小组同学们都完成 1c 后，学生自愿举手朗读句子，教师核对答案正误。 4）分小组让学生练习对话，学生根据 1c 图片内容向同伴复述 1a 的主要内 容。最后学生自愿举手向全班同学复述。在此过程中，教师要关注学生们出现 的错误并及时给予纠正，表现好的给予积极评价，以示鼓励。 Step 4.巩固练习 （设计目的：通过 1a 和 2 的学习，让学生巩固复习所学重要词汇和句型， 发展学生的听说能力。 ） 1.教师在大屏幕上展示练习题（见 PPT10,11） ，并让学生回答问题。 Step 5.总结 （设计目的：帮助学生进一步复习本课所学重点知识。 ） 教师带领学生归纳总结本课知识点。 Step 6.布置作业 1.Recite1a. 2.Finish Section A in your workbook. 3. Preview Section B. 4 VI. 板书板书 VII.教学反思教学反思 首先，能够做到思路清晰，重难点突出，以学生为主体，以实际运用为目的， 课堂气氛轻松愉悦，符合新课标的要求。 其次，本节课的主要特点：通过让学生进行互动巩固所学知识，并在使学生在 参与互动的过程中激发起对新知识的学习兴趣。 第三，本节课针对不同程度学生设计作业，力争做到因材施教。 反思本节课的课程设计，依然有许多不足，比如很难做到对学生整体和个体平 衡教学，游戏和学生参与环节形式应更加多样化等问题，我们争取在今后的工 作中尽力完善。 Pollution has caused too many problems. Section A Words and phrases: bee, butterfly, mess, shame, several, pollute/ pollution waste, villager, destroy, cut down, goodness, see sb./sth. doing sth., pour sth. into Sentences: Grammars: What a shame! / What a mess! 一般过去时 The flowers and grass have gone! 现在完成时 What has happened here? There are several factories pouring waste water into the stream. Everything has changed.