Unit 2 Saving the Earth-Topic 1 Pollution has caused too many problems.-Section A-ppt课件-(含教案)-市级公开课-仁爱科普版九年级上册(编号：d196e).zip

1、U2T1SA 1 Unit 2 Saving the Earth Topic 1 Pollution has caused too many problems. Section A 教学设计 . 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。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

2、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。3 通过听并记录“动物的生存现状”，了解环境污染带给动物的危害，继续提高学 生的听力水平。任务 4 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。 .学生情况分析学生情况分析. 作为初三学生作为初三学生,有了一定的知识基础和词汇储备有了一定的知识基础和词汇储备,大部分学生能顺利接受新知识大部分学生能顺利接受新知识,积极参与教学活动中来积极参与教学活动中来.但也有部分学生基础较差但也有部分学生基础较差,不喜不喜 欢课堂说英语欢课堂说英语.为此为此,课堂教学中应设计较丰富的活动

3、课堂教学中应设计较丰富的活动,吸引这部分学生参与进来吸引这部分学生参与进来.同时同时,组织有效的小组活动组织有效的小组活动,实现生生互动实现生生互动,互相督促互相督促,互相互相 九年级上册教学案例设计 2 帮助帮助,有利于形成和谐的人际关系有利于形成和谐的人际关系,促进学生共同成长促进学生共同成长. .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”。 2.Skil

4、l 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。 . The key points and difficult points 1. Key points: Words and phrases: bee, butterfly, mess, shame, several, pollu

5、te, waste, villager, destroy, cut down, goodness, pour, see sb./sth. do sth., see sb./sth. doing sth., cut down, my goodness U2T1SA 3 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 wast

6、e 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。 . Learning strategies 通过引

7、导学生在听前阅读 1b 和 3，培养学生形成听前熟悉、预测听力材料的习惯。 通过朗读 1a 和 2，引导学生模仿已有对话，编写新的对话。 通过 1c，培养学生整合对话信息，将对话转换为语篇的能力。 . Teaching aids 图片，录音机，幻灯片等。 九年级上册教学案例设计 4 . Teaching procedures Stage (time period) Interaction patterns Teacher activityStudent activityRemarks 1 Getting students ready for learning （1 min) Class act

8、ivity Greet and talk about the weather. Lead the Ss to discuss the changes in their hometown. T: Hi, boys and girls! Can you describe the changes in your hometown? T: Praise the studens. Greet and focus their attention on the teacher. . Ss: (give their own answers) 通过谈论家乡的变化，吸 引学生的注意力，复习上 一话题内容，也引出本

9、课 主题，使学生专注于课堂。 2 Lead-in (3-5 mins) Group work Let the Ss discuss (show two pictures ,ask what has happened?) T:What can you see in the picture? T:Do you like here? Then,show another one and help students discuss. Discuss the two pictures Ss;There are beautiful flowers. Ss:The flowers have gone. 老师先

10、出示没被污染的图 片来吸引学生的注意。当 学生兴趣高涨时，又呈现 被污染后的图片，让学生 满怀兴趣和疑问去了解被 污染前后的状况，更好的 体会一般过去时和现在完 成时在语境中的运用，同 U2T1SA 5 时也突破了单词关。 3 Pre-listening (5-7 mins) Class activity Present two pictures of the West Hill and describe the changes. Teach the new words and some difficult sentences. (Show the old picture of the Wes

11、t 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

12、you see the bees and butterflies dancing there (Point to the bees and butterflies, and then Watch the pictures of the West Hill, guess the meaning and pronunciation of the words according to the introduction about the changes of the West Hill. Ss: Yes, its the West Hill. S1: Some flowers, a clean ri

13、ver and a big tree 在教授新单词时，老师应 当同时呈现单词和音标， 让学生运用所学音标自己 解决单词的读音问题，如 果学生发音不准，老师要 及时更正。再根据图片和 讲解，引导学生大胆的猜 测词义和部分难句的意思， 为 1a 中的听力对话扫障 碍。 九年级上册教学案例设计 6 write down the words and phrases on the Bb) 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

14、 picture. Do you like it? Ss: No. (Teacher presents the new words and difficult sentences through the description of the picture.) Ss: Yes Ss: No. 4 While-listening (10 mins) Individual workStep 1: Let the Ss listen to 1a twice and do 1b alone. T: Listen to the tape carefully and try to mark the wor

15、ds with P or N. T: Now please check answers in your group. S1: “Beautiful” is in the past. Listen and mark the words with P or N according to the tape. . S1: “Beautiful” is in the past. S2:“Butterflies” are in the 本课对话不长，词汇量不 大，可以直接在组内核对 答案。如果对话较长，难 度较大，建议先听两遍后 再读，通过读来检查听的 结果。 U2T1SA 7 Group work S2

16、:“Butterflies” are in the past. S3: “Dirty” is now. Step 2: Let the Ss listen to 1a again and pay attention to the pronunciation and the intonation. Then practice 1a in groups and role play it. T: Read 1a with your group members and act it out. past. S3:“Dirty” is now. Listen to 1a again and pay att

17、ention to the pronunciation and the intonation. Then practice 1a in groups and role play it. 分角色朗读是培养语感， 增强自信，提高兴趣的基 本方法之一。让学生通过 读的方式感知一般过去时 和现在完成时的差别后， 在 2 中马上运用，编写新 的对话，可以让学生完整 的体会两种时态的区别， 也突破了本课的语法关。 5 Post-listening (20 mins) Group work Step 1: Let the Ss read 1a aloud and fill the blanks in 1c

18、in groups. T: Read 1a aloud and fill in the blanks in 1c as quickly as possible, and then discuss the answer with your group members. Read and fill the blanks in 1c as quickly as possible. 做完听力练习后，再让学 生通过读的方式在具体情 况中感知两种时态的差别， 并通过相应的任务去掌握 它们的用法。 九年级上册教学案例设计 8 Pair work T: Now check the answer togethe

19、r. S1: a beautiful place S2: lost of flowers and grass S3: Step2: Let the Ss observe the pictures and study the example in 2 and try to make new dialogs according to the pictures and the given words. Then act out the dialogs. T: Now study the example in 2 and try to make new dialogs with their partn

20、ers according to the pictures and the given words. Then act out the dialogs. T: OK, who can try? S1: There were many trees when I visited the hill last year. S2: But now the trees have gone. S1: a beautiful place S2: lost of flowers and grass S3 Observe the pictures and study the example in 2 and tr

21、y to make new dialogs with their partners according to the pictures and the given words. Then act out the dialogs. S1: There were many trees when I visited the hill last year. S2: But now the trees have gone. 该环节是让学生通过听的 方式，继续学习一般过去 时和现在完成时的区别， 并引导学生关注动物的生 存问题和环境污染的严峻 形势。教师要注意在情感 态度教学方面的引导。 U2T1SA 9

22、 Individual work S1: What has happened here? S2: The farmers have cut them down. Step 3: Lead the Ss to look at the pictures and listen to the sentences once to number them. Then listen to them twice to complete the sentences. T: Look at these pictures in 3, listen and number them. . T: OK, now chec

23、k the answers together. The right order is T: Well done. Now listen again and fill in the blanks in 3. When listening, you can only write the first two letters of each word or the first word of each phrase. After finishing listening, you have some time to S1: What has happened here? S2: The farmers

24、have cut them down. Look at the pictures and listen to the sentences once to number them. Then listen to them twice and complete the sentences. 九年级上册教学案例设计 10 complete your answers. Ready? T: OK. Now you have one minute to complete the sentence. Pay attention to the form of verbs. T: OK, time is up.

25、 Lets check the answers. S1: People have cut down too many trees. S2: many trees. S3: but now they S4 S1: People have cut down too many trees. S2: many trees. S3: but now they S4 6 Summarizing and assigning homework (3 mins) Group workStep 1 :Sum up the main content of this class and the key points

26、T: Lets go through what we have learned today. Group 1 and 2, please sum up the new words. Group 3 and 4, please sum up the key Speak out the key words, phrases, sentences and grammar points in groups. 总结的方法分很多种，教 师可以根据需要和学生的 实际情况安排。该环节处 理时，要重点区别两种时 态的用法，学生总结后， U2T1SA 11 Group work phrases and the d

27、ifficult sentences. Group 5 and 6, please sum up the grammar in this class. Step 2: HMK : 1. Write a passage about pollution in some place you know. 2. Talk about how many kinds of pollution you know and make a list. 1.Write a passage about pollution in some place you know. 2. Talk about how many ki

28、nds of pollution you know and make a list. 教师可以适当点拨或者出 示相应的习题加以巩固训 练。 . Blackboard design Pollution has caused too many problems. Section A Words and phrase: bee, butterfly, mess, shame, several, pollute/ pollution waste, villager, destroy, cut down, goodness, see sb./sth. do sth., Sentences: What a shame! / What a mess! The flowers and grass have gone! What has happened here? There are several factories pouring waste water into the stream. Everything has changed. 九年级上册教学案例设计 12 see sb./sth. doing sth., pour sth. into