资源简介

(共15张PPT)
Unit 8 A green world
Welcome to the unit
Activity 1: Watch, answer and learn
Let’s watch a video and think about what you will learn today.
Let’s watch a video.
Key word: pollution
Activity 1: Watch, answer and learn
Do you know what types of pollution are shown in the pictures
Dear class, I will show you some pictures on the screen. Do you know what types of pollution are shown in the pictures You can say it in Chinese if it’s difficult.
Soil pollution
Noise pollution
Air pollution
Water pollution
Activity 2: Guess, listen and write
Do you know what types of pollution are shown in the pictures
Look at the pictures in Part A and guess the causes of each type of pollution.
Activity 2: Guess, listen and write
The Class 1, Grade 8 students are learning about pollution. Listen to an introduction to four types of pollution and write the causes next to each type.
Cutting down
cars
Smoke from factories
Waste water
Activity 3: Listen, think and answer
Listen to the conversation between Millie and Daniel in Part B. Think about the questions.
What are they talking about
Do you have any ideas to reduce pollution
Activity 3: Listen, think and answer
Read after the tape and learn some difficult expressions.
share a ride to school with others 和他人拼车上学
Lily often shares a ride to school with her neighbor to save money and cut down on car emissions.
eco-friendly cleaning products 环保型清洁用品
To protect the environment, our school now uses eco-friendly cleaning products to clean the classrooms.
use less air conditioning 少用空调
We should use less air conditioning in summer and use electric fans instead to save energy.
reduce water pollution 减少水污
Factories must treat their waste water before releasing it to reduce water pollution.
Activity 4: Read and act
Read the conversation in Part B in pairs.
Millie: What can we do to reduce air pollution
Daniel: It’s a good idea to share a ride to school with others or take the bus.
Millie: Yes. We can also ride a bike if we live close.
Daniel: Good idea. We can plant more trees.
Millie: I agree. And what about water pollution Some rivers don’t look clean and clear!
Daniel: We should use more eco-friendly cleaning products.
Millie: Yes. That will reduce water pollution.
Activity 4: Read and act
Work in pairs and act out the conversation in Part B.
Activity 5: Talk and show
Work in groups of four. Choose a type of pollution in the following table and present your ideas.
Activity 5: Talk and show
Make a report to share your ideas. Then assess each other’s performances according to the criteria.
: Today our group will talk about air pollution. First, let’s look at the main causes.
: The main causes include burning unclean fuels like coal, exhaust fumes from cars
and factories, and smoke from forest fires. These produce harmful gases that make
the air dirty.
: To reduce air pollution, we can plant more trees to absorb harmful gases. We can
also use public transport, ride bikes or walk instead of driving cars. Using clean
energy like solar power is also a good idea.
: If we all take these actions, we can make the air fresher and protect our health.
Activity 6: Think and share
Think about the question and share your ideas.
Which type of pollution is the biggest problem in your hometown
In my hometown, air pollution is the biggest problem. The main reasons are the large number of cars on the road, which produce a lot of exhaust fumes, and some factories that burn unclean fuels like coal. In winter, the use of coal for heating also makes the air quality worse, often leading to smog. To improve this, we can take the bus or ride bikes more often instead of driving, and the government should encourage factories to use cleaner energy like solar power.
Activity 7: Watch and understand
Watch the video again and think about the question.
Why is caring for the earth also caring for ourselves
1. Search the internet for more information about pollution. (Required )
2. Write an article about which type of pollution is the biggest problem in our hometown and state the reasons. (Optional)
Homework

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