八年级下册Unit 8 A green worldWelcome to the unit课文内容课件ppt

《英语》（八年级下册）

Unit 8 A green world

Comic strip and Welcome to the unit

I. Teaching aims and learning objectives

By the end of the lesson, students should be able to:

1. know the importance of protecting the environment;

2. talk about how to protect the Earth.

II. Teaching contents

1. New words and phrases: dig, serious, breadfruit, reduce, recycle, turn off

2. New structures: Will more trees be planted this year?

               We can protect the environment by recycling waste.

               It’s wise for people to choose public transport or ride bicycles.

III. Focus of the lesson and predicted area of difficulty

Talk about how to protect the earth.

IV. Teaching procedures

Comic strip

Step 1 Lead-in

Let’s talk

T: What do you think of when you see the color green?

T: You give this color so many nice words. And I agree with you. In order to make the Earth more beautiful, I’m going to plant some trees this year. Listen, Eddie and Hobe are talking about planting trees too.

【设计意图：通过谈论绿色带给人们的感觉，引出植树话题，使学生很快进入漫画的学习中。】

Step 2 Presentation

1. Let’s watch

  T: Watch the comic strip and tell me what kind of trees Eddie is going to plant.

2. Watch and answer

T: Watch again and answer some more questions.

    (1) Why does Hobo want to plant more trees?

(2) Is Eddie serious? What does he really want to do?

3. Listen, read and act

【设计意图：通过看听漫画回答问题以及朗读和角色表演，帮助学生掌握漫画内容。】

Step 3 Exercise

1. Group discussion

T: What can trees do to us?

2. Let’s practice

T: Fill in the blanks according the discussion.

【设计意图：先口头讨论树木的作用，然后通过缺词填空来巩固学生的认识。】

Welcome to the unit

Step 1 Lead-in

1. Free talk

T: What pictures may go through your mind when you see these Chinese words 沐浴阳光?

T: Maybe these. Look at the screen. How beautiful! The sky is blue and the trees are green.

There is also clear water and lovely fishes swimming around.

【设计意图：让学生通过文字进行想象，为下文谈污染做铺垫。】

Step 2 Presentation

1. Talk about pollution

T: Why hasn’t the little girl seen white clouds before?

T: Yes. Because of all kinds of pollution. Look, these are what you think the world is like, but actually our earth is getting sick.

2. Let’s match

T: Here’re different kinds of pollution. Let’s match pictures with right names.

【设计意图：通过图文配对，使学生进一步了环境污染的具体名称及现象。】

3. Let’s discuss 

T: What problems does pollution bring us? 

T: In a word, pollution does harm to the environment and makes people get ill easily. Do you want our world to become one big dustbin? Do you want to live in a polluted neighborhood?

T: In 1972, the United Nations established World Environment Day in order to encourage people to protect the Earth.

T: What shall we do to protect our earth?

【设计意图：通过讨论各种污染的危害，引导学生认识到环保的重要性。】

Step 3 Practice

1. Part A

T: How can we live a green life? Match the pictures with the correct sentences.

T: Let’s have a clear look at the signs in the first picture. 

  If we say something is recyclable, that means we can do something to it so that it can be used again. Paper and glass can be recycled.

【设计意图：通过看图说话使学生初步了解环保的方法，并使他们知道一些标志的含义。】

2. Part B

  T: Listen and answer the following questions.

    (1) What are they talking about?

(2) How many ways are mentioned?

(3) What are they?

T: Listen to the conversation again and repeat after the tape. 

T: Find some useful expressions from Part B.

【设计意图：通过听后的问答，进一步巩固A部分中所学到的语言点，并将短语融入到平时的表达中。】

Step 4 Production

Let’s discuss

T: What other ways do you think you can do to go green? Think about food, clothing, shelter and transportation. They are our basic needs. You can use Part B as a model.

【设计意图：引导学生从衣食住行四个方面考虑切实可行的环保手段与方法，并运用B部分的有用句式进行对话。】

Step 5 Summary

T: Planet Earth is our shared island. Let’s join forces to protect it. Taking action means every year, everywhere and everyone. Every action counts.  

V. Homework 

1. Remember the new words and phrases.

2. Read and recite Part B.

3. Make a similar dialogue using Part B as a model and write it down.

4. Take some actions around your neighborhood to protect the environment.