Unit 2 Saving the Earth-Topic 1 Pollution has caused too many problems.-Section A-ppt课件-(含教案+音频)-市级公开课-仁爱科普版九年级上册(编号：203eb).zip

Unit 2 Saving the Earth Topic 1 Pollution has caused too many problems. Section A Review Bee :n蜜蜂 butterfly: n 蝴蝶 chemical：adj 化学的 Mess：n混乱 factory：n 工厂 Shame：n羞愧 Several：adj几个 若干（few) Pollute :v 污染 pollution Waste：v 浪费 adj 浪费的 Villager：n 村民 Pourinto：v 倒入. Welcome to The West Hill Two years ago There were lots of flowers and grass. We could see bees and butterflies dancing. bee butterfly The West Hill was beautiful The air was fresh and the water was clean. Have you ever had a picnic? Kangkang, Jane, Maria and Michael are planning a picnic for Sunday. They will go to the West Hill. The flowers and grass have gone! Oh,What a mess! Look! There are several chemical factories pouring waste water into the stream. = have disappeared. 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 1a Listen, look and say. 1c Complete the sentences in the table. 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 Lets talk! Look at the pictures. Try to describe them. Two years , it place. There . The air and the water , and you But now everything . The flowers and grass .The water and smells . What here? Look, there are several chemical factories the stream. Oh, ! ago was a beautiful were lots of flowers and grass was fresh was clean could see bees and butterflies dancing has changed have goneis so dirty pouring waste water into What a shame terriblehas happened What a shame Language points What a shame!/what a mess! You can see bees and butterflies dancing. There are several factories pouring waste water into the stream. 感叹句感叹句 see sb doing 看见某人正在做看见某人正在做 Pour .into把把倒入倒入 多可惜啊！多可惜啊！一团糟！一团糟！ see sb do 看见某人做了看见某人做了 There bedoing sth 有有在做某事在做某事 e.g. _ _ some people _ (wait) for the bus at the bus stop. Thereare waiting There are some chemical factories pouring waste water into the stream There bedoing sth 有有在做某事在做某事 There is a boy swimming in the ocean There are some butterflies and bees dancing Present perfect（现在完成时）（现在完成时） 花和草都消失了！ 这儿发生了什么? 一切都变了。 结构：结构： Have/has +done（动词过去分词）常常与always， yet, already, never, ever, just, before 搭配 E.g. I have found my pen already. I havent found my pen yet. I have been to the Great Wall . He has done his homework. Has he done his homework? . The flowers and grass have gone ! What has happened here? Everything has changed. 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。用所给动词的适当形式填空。 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. Pandas dont have enough bamboos _ (eat) now because of the pollution. 5. Where have they been? They _ (be) to the Great Wall. They _ (have) a good time there the day before yesterday. reading have gone has changed to eat have beenhad 1. Express exclamation: What a mess! What a shame! 2. 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, destroy, pollute, goodness 2. Some phrases: see sb. doing sth. pourinto. 3. Some sentences: There aredoing What have we done ? No Clean water to drink Dirty air Green house effect Melting融化融化 ice Homeless animals Save the earth , our only home Thank you U2T1SA 1 Unit 2 Saving the Earth Topic 1 Pollution has caused too many problems. Section A . Material analysis 本课是九年级第二单元第一话题的第一课时。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。2 通过反复听和练习 1a 的对话，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。任务 3 的口语表达，培养学生的说的技能，检测对本课的掌握情况。通过本课的学习，培 养学生关注环境问题的意识。 .Teaching aims 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”。 加深对 present perfect tense 的认识。 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。 . The key points and difficult points 1. Key points: Words and phrases: bee, butterfly, mess, shame, several, pollute, waste, villager, destroy, cut down, 九年级上册教学案例设计 2 goodness, pour, see sb. /sth. doing sth., cut down, my goodness 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. Difficult points： 正确使用 there be sth./sb. doing sth.来表达“有某人/物正在做某事” 。 能正确地使用一般过去时和现在完成时并完成相应的练习。 . Learning strategies 通过导学案，培养学生形成课前预习新单词和句型的习惯。 通过听 1a，引导学生模仿 1a 的语音/语调和练习已有对话。 通过能力提高，培养学生整合对话信息，将对话转换为语篇的能力。 . Teaching aids 视频（Micheal Jackson Earth Song） 图片（关于环境变化和环境保护的图片资料） ，幻灯片等。 . Teaching procedures Step1：Getting students ready for leaning Show an MV(Earth song ) to students ( students are very easily attracted by songs /pictures and vedios .By this way, I can make them forcus on my calss and lead in todays topic :Pollution has caused too many problems.) Teaching activities:T: hi boys and girls ! Do you like this song? S:yes. T: Would you tell me who the singer is? S: Micheal Jackson. T: well done! Whats this song about? S:.pollution earth protection T:Good ! so today we are going to learn topic1 :Pollution has caused too many problems.(ask students to read the title alound ) U2T1SA 3 Step2:pre-listening Use ppt to review the words learned before .ask students to read aloud. T: First of all. Lets review the words we have learned before.please read after me and three times each one. S:. Step3:while-listening 1. (Show the old picture of the West Hill to the Ss) T: Look at this beautiful picture. Kangkang and his friends had a picnic there two years ago. Can you guess where it is? Ss: Yes, its the West Hill. T: What can you see in the picture? S1: Some flowers, a clean river and a big tree T: Right. The West Hill is a beautiful place. Can you see the bees and butterflies dancing there? (Point to the bees and butterflies, ask students to pay attention to see.doing) T: So do you want to go there for a picnic? Ss: Yes T: Id like to. But now it has changed a lot. Look at this picture. Do you like it? Ss: No T: Now. Lets listen to IA to know more about the changes. T: Read 1a with your group members and act it out. 2: Let the Ss listen to 1a once and do 1b alone. T: Listen to the tape carefully and try to mark the words with P or N. T: Now please check answers S1: “Beautiful” is in the past. S2:“Butterflies” are in the past. S3: “Dirty” is now. 3: Let the Ss listen to 1a again and pay attention to the pronunciation, intonation and follow the vedio. Then practice 1a in groups and role play it. 九年级上册教学案例设计 4 Step4:post-listening 4: Ask students to underline the language points and explain them. 5: let students to do some exercise after explaination. Step5: uplifting Step6: summary and emotional altitude T:let s do a summary today T: the environment around us is becoming worse and worse. We have done many bad things to the earth. (show students the pictures of earth-distroying .) we have cut down so many trees , we have polluted a lot of rivers and streams . we make the air dirty. So in the future we may have less clean water to drink and we cannt breath fresh air, whats more the green house effect So we must save the earth-our only home. T:Look at the picture. Try to describe it. You may begin like this. Two years , it place. There . The air and the water , and you But now everything . The flowers and grass . The water and smells . What here? Look, there are several chemical factories the stream. Oh, ! U2T1SA 5 Blackboard design Teaching reflection(课后反思课后反思) - - - - - - - - - - Topic1 Pollution has caused too many problems. Section A Language points: What a shame! / What a mess! You could see bees and butterflies dancing. There are several factories pouring waste water into the stream. The flowers and grass have gone! What has happened here? Everything has changed. 九年级上册教学案例设计 6 - - - -