课件21张PPT。Unit 4 Topic 1
What can I do for you?
Section BVictoria Unit 2 Saving the Earth
Topic 1 Pollution has caused too many problems .
Section BWhat kind of pollution do you know?Free talk What kind of pollution is it?air pollutionwater pollution What kind of pollution is it?noise pollution What kind of pollution is it?litter What kind of pollution is it?light pollution What kind of pollution is it?soil pollution What kind of pollution is it?Example:
People use chemicals too much in their fields, and soil pollution causes unhealthy food.
1. People pour waste water into rivers and lakes, so ________________ is almost everywhere in China.
2. ______________ makes people sick. It causes breathing problems and even cancer.
3b Complete the sentences with the words and phrases in 3a. （P30）water pollutionAir pollution3. In some cities, there’s too much _________________ caused by many cars.
4. ________________ is harmful to birds. Also, when we use too many lights at night, we waste energy.
5. _________ makes a mess of our environment, so people shouldn’t throw it around.3b Complete the sentences with the words and phrases in 3a. （P30）LitterLight pollutionnoise pollutionWhat pollution can you find in the picture?B. Listen again and match each question above with an answer below.a. Not yet.
b. I’ve been like this since last week.
C. It’s difficult for me to breathe.
d. Oh, yes.Cbad1b A. Listen to 1a and check the questions you hear.（P29）
Question Answer
1. What’s wrong with you? _____
2. How long have you been like this? _____
3. Where have you been? _____
4. Have you seen a doctor? _____
5. Have you noticed the dead fish in the river? _____√√√√1c Read 1a and answer the questions.（P29）1.What’s wrong with Mrs. Zhou?
2. What caused Mrs. Zhou’s problems?
3. What will Kangkang do?
4.Do you have any other ways to solve Mrs. Zhou's problems?
He will write to the newspaper about these problems.The bad air and too much noise.The government should make some laws to protect the environment.She got a pain in her throat. Her chest hurt and she couldn’t sleep well at night.Listen and read Listen to 1a and read after it.2 Choose the correct words to complete the passage.(P30)Dear editor,
I’m writing to say something about the chemical factory near my house. The factory causes _______ (too many/ too much) problems. First, it produces terrible gas, and it is hard for us to ________ (breathe/ breath). What’s worse, the factory makes a lot of noise. We can’t sleep well at night. It also pollutes the river nearby. Now there are many _____ (die/ dead) fish in the river. I think people should care for these problems and I hope the government will solve them soon.
Yours, Kangkangtoo manybreathedeadExercisesPollution has caused too many problems.produce terrible gas pour waste water into the river The bird says it won’t come here the next year. Why？Work in pairs and make up a conversation based on 1a.The following expressions may help you.A: What’s wrong with you?
B: I……
A: How long have you….?
B: I’ve been ……
A: What caused the pollution?
B: The factory produces …….
produce terrible gas pour waste water into the river What should we do?cloth bagDiscussion1. Some words:
soil, pain, chest, breathe, breath
2. Some phrases:
be harmful to, get a pain in, too many, too much
3. Some sentences:
(1)How long have you been like this?
(2)Have you seen a doctor?
summaryWhat have we learned today?It’s our duty to protect the environment.Homework1. Try your best to recite the new words and read the dialogue fruently.
2. Preview Section C.Let's protect our earth!
Thank you!教学反思
N0.20
这节课是九年级上册Unit2 Topic1 Section B Pollution has caused too many problems一节听说课。由于这节课讲述的和污染有关，所以在导入部分运用各种污染的图片引导学生熟悉各种污染，并引入新的单词和句型。整堂课以听说为主，通过两个听力训练，加深学生对教材内容的理解。阅读后回答问题是对课文内容的一个提炼。对教材分析完后我设置了一个新的与本节课污染话题有关的图，为了让学生有更好的“输出”，以设问的方式带着学生描述图片，有了这个“热身”后，让学生根据图片，仿造1a来编一个对话，在这里有给出提示句型。最后讨论是对本节课一个情感上的升华，也是对学生品质的一种培养。谈论如何保护环境。引导学生关注环境问题，树立绿色环保意识，增强忧患意识和社会责任感。保护环境人人有责。
整节课的亮点在于，教学环节紧凑，环环相扣，层层推进。设计的活动，学生都能较好的完成，从老师的“输入”到学生的“输出”都有很好的体现。不足之处在于，对话演练部分应该再多一些组来练习。讨论环节中，由于时间仓促，来不及让学生发表太多的自己观点，只能根据我所提供的图片来回答保护环境的一些措施，给学生自由发挥的空间有点少。通过这样的活动，我也确实学到了许多新的教学方法，对英语教学也有了更深层次的理解。对于本节课的不足，在今后的听说课中我会更加注意。
教学设计
No.20
所用教科书
书名
仁爱版《英语》? ?
所教年级
九年级
所教册次、
单元
九年级上册Unit 2? Topic1
Section B
设计主题
Pollution has caused too many problems
1.整体设计思路、指导依据说明
本课是九年级第二单元第一话题的第二课时，主活动是1a和3a。1a通过Mrs. Zhou 讲述自己的身体状况和生活环境，引出污染对人们的健康和生态环境所产生的危害，同时也道出了污染产生的原因。1b通过“听—回答问题—再听—核对答案”的模式来训练学生的听力技能。2与1a形成很好的呼应，通过康康向报社反映西山污染情况的信件，呼吁政府和大众关注环境问题，要求学生掌握词性的转换，强化1a中的语言知识。3a 和3b通过图片和简介来描述不同种类的污染以及带来的危害。本课的最后一环节是延伸部分，通过对话和讨论复习各种污染，谈论什么导致污染以及我们怎么样做可以保护环境。
2.教学背景分析
学生喜欢谈论本单元的各种污染话题。尤其是通过Section B 1a和3a的学习，学生能够说出各种污染并运用相关的句型谈论产生污染问题的原因和怎样保护环境。通过学习本课，引导学生关注环境问题，了解各种污染类别以及带来的危害，树立正确的环保意识。
3.教学目标（含知识目标、技能目标、情感目标）
1.Knowledge aims：
掌握本课的重点词汇和短语，正确运用现在完成时进行问答。
2.Skill aims:
能通过观察课文插图来预测课文内容。
能听懂用现在完成时表达的对话。
能朗读和表演有关环保的对话。
3.Emotional aims: (optional)
引导学生关注环境问题，树立绿色环保意识，增强忧患意识和社会责任感。
4.Culture awareness: (optional)
通过谈论环境问题，让学生了解不同种类的污染及其危害。
4.教学重点、难点
教学重点：
Words and phrases: soil，pain, chest, breathe, breath, produce
be harmful to, get a pain in, too many, too much
Sentences: A: How long have you been like this? A: Have you seen a doctor?
B: I’ve been like this since last week. B: Not yet.
Grammar: Present Perfect的问答。
教学难点：能在不同语境中，正确判断单词的不同词性。
5.教学方法
audio-lingual?method
audio--visual?approach
6.教学过程设计
Step1.Getting students ready for learning
Guide the Ss to discuss different kinds of pollution in groups and share the answer together.
T: What kind of pollution do you know?
设计意图：该环节是让学生通过查找资料，倾听同伴的讲解等方式，提高获取信息的能力和意识，引导学生从不同渠道关注社会问题。
Step2. Lead-in
Let the Ss look at the pictures in 3a on page 30 and guess the meaning and pronunciation of the new words according to the pictures and the teacher’s descriptions.
设计意图：先让学生根据图片猜测各种污染，此处只呈现前五幅图片，在下一环节再用“soil pollution”引入听前活动，并以此教授部分新的单词和短语。
Step3. Pre-listening
1. Show the picture of soil pollution, teach the new words and check the answers of 3b.
2. Ask Ss to fill in the blanks in 3b with the words and phrases in 3a.
设计意图：应利用介绍土壤污染的契机，教授新单词、短语，为学生接下来进入新课打好基础。
Step4.While-listening
1. Show a picture of the polluted West Hill, let the Ss listen to 1a once and tick the questions they hear in part A of 1b. Then check the answers together.
2. Get the Ss to listen again and match the questions with the right answers in part B of 1b. Then check the answers together.
设计意图：通过“听—回答问题—再听—核对答案”的模式来训练学生的听力技能。
Step5.Post-listening
1.Get the Ss to read 1a and answer the questions in 1c.
2. Let the Ss read 1a after the video. After that, read 1a again in different roles.
3. Let the Ss read 1a carefully and underline the difficult points including words, phrases and sentences. Then lead the Ss to ask their classmates and teacher for help. Write down the points they can’t understand on the book.
4. Lead the Ss to scan the material and choose the correct words to complete the letter in 2.
设计意图：通过完成1c的读后任务，进一步理解对话内容。在完成该任务时，如果答案不能直接从课文中找出，要引导学生学会用自己的语言总结和归纳答案，允许有不同的表达方式。教师需要引导学生，一步一步朝着正确答案去思考，可以运用课文中的文本语言，也可以拓展例句提供新的语境，还可以根据已学知识理解新知识。
Step6. Practice
1. Show a picture to the students and ask them what is wrong with the two birds.
2. Work in pairs and make up a conversation based on 1a.
A: What’s wrong with you?
B: I.....
A: How long have you.....?
B: I’ve been……
A: What caused the pollution?
B: The factory produces……
3. Discuss in groups.
Pollution has caused too many problems. It makes the environment worse than before. What should we do?
设计意图：通过漫画中两只小鸟的对话，让学生仿照1a编一个对话，对话完成后，通过对污染的学习，引导学生要树立环保意识，讨论如何保护环境，让学生运用本节课所学到的词汇、句型来组织自己的语言。这一环节主要是培养学生的语言组织能力和语言表达能力。
Step7.Summarizing and assigning homework
1. Let the Ss go over what they have learned this period. Sum up the key points.
T：It’s our duty to protect the environment.
Homework
Try your best to recite the new words and read the dialogue fluently.
Preview Section C.
设计意图：小结本节课的单词、词汇和句型。教师最后引导学生总结保护环境，人人有责，增强学生的绿色环保意识和社会责任感。
7.板书设计
Blackboard design
Pollution has caused too many problems.
Section B
Words :
soil
pain
chest
breathe
breath
produce
Phrases:
be harmful to,
get a pain in…,
too much
too many
Pollution:
air pollution
water pollution
noise pollution
soil pollution
light pollution
litter
