资源简介

(共23张PPT)
Unit 3
A Green Earth, a Better Home
Thinking Skills & Reading Strategies
能通过阅读文本，识别并完成因果关系链，理解噪声污染的原因与影响。
能结合文本线索和个人经验，做出合理的概括性陈述。
学习目标
能就垃圾分类等环保话题进行讨论，运用因果关系和概括策略表达观点。
新课讲授
Thinking Skills
Understanding cause and effect
Think about and discuss the question.
How can we distinguish
cause and effect
Activity 1
Look at the pictures and complete the cause-and-effect chain.
Cause:
Factories have stopped
pouring waste water
into the river.
Effect/Cause:
____________ has turned clean again.
Effect:
There are more and
more ____________
in the river.
The river
fish
A cause tells about why something happens, and an effect is what happens.
概念 说明 常用信号词
Cause 为什么某事会发生 because, since, as, due to, because of
Effect 发生了什么事 because, since, as, due to, because of
Activity 2
Read the text and complete the cause-and-effect chain.
Noises are unpleasant sounds.Cars, machines, loudspeakers and many other things can produce noises. Long-lasting or sudden loud noises can do great harm to people's hearing and cause hearing problems Serious hearing problems can have further negative effects on people's health and cause other health problems, like high blood pressure, heart disease and so on.
Then complete the cause-and-effect chain.
Cause:
Many things can
produce
_____________.
Effect/Cause:
Loud noises cause
serious ________ problems.
Effect:
Hearing problems cause other _______ problems.
noises
hearing
health
Activity 3
Pair work. Discuss more causes and effects of noise pollution with your partner.
noise pollution
causes: ...
effects: ...
noise pollution
Causes of noise pollution:
Cars and traffic on the streets
Construction work / building sites
Loud music from parties or clubs
Airplanes flying over cities
Factories and machines
Effects of noise pollution:
Hearing loss or damage
Difficulty sleeping / insomnia
Stress and anxiety
High blood pressure
Heart disease
Difficulty concentrating at work or school
A: What are the causes of noise pollution in our city
B: I think traffic is a big cause. There are so many cars on the
road every day.
A: Yes, and construction work also produces a lot of noise.
B: What are the effects of noise pollution
A: It can cause hearing problems and make people feel stressed.
B: I agree. It also makes it hard to sleep at night.
Reading Strategies
Making generalizations
Making generalizations
When you make a statement about all or most of the people or things, you are making a generalization. Your generalization is often based on the text and your experience.
Activity 1
Look at the picture and read the text. Learn how to make a generalization.
Shanghai started waste
sorting in 2019, and soon other cities followed.
I read: People in Shanghai and other
cities need to sort waste now.
I know: There are waste bins of different
colors in almost every community.
I generalize: Now, we all need to
_____________________________.
sort waste
Step 1：Read — 阅读文本，获取事实信息。
Step 2：Know — 结合自己的生活经验或常识。
Step 3：Generalize — 做出合理的概括性陈述。
Making generalizations
Activity 2
Read the text and complete the statements about the steps of making a generalization.
Waste sorting is very important for environmental protection. To sort the wastes, we put them into bins of different colors. The blue bin is used for recycling paper and plastics the green one is for kitchen waste, the red one is for the harmful or dangerous waste and the gray one is for others. Sorting the waste is not easy. So, besides colors, there are also signs and texts on each bin to help people sort waste correctly. Communities often hold different activities to teach people how to sort the waste, and sometimes you can see volunteers help people put the waste into the right bin.
I read: There are different ways to help people sort the waste.
I know: Many people don't know how _________________.
I generalize: With different kinds of help, most people
_________________________________.
to sort the waste
can sort waste correctly
Activity 3
Pair work. Talk about how you sort the waste and make a generalization about waste sorting in your neighborhood.
A: How do you sort the waste in your home
B: We have different bins for different kinds of waste. We put paper
and plastics in the blue bin, kitchen waste in the green bin, and
harmful waste in the red bin.
A: That's good. What about your neighborhood
B: In my neighborhood, there are also waste bins of different colors.
Volunteers sometimes help people put waste into the right bins.
A: So can you make a generalization about waste sorting in your
neighborhood
B: I think most people in my neighborhood are learning to sort waste
correctly. With the help of volunteers and clear signs, waste sorting
is becoming easier for everyone.
generalization
In my neighborhood, most people are trying their best to sort waste correctly.
With more bins and clearer signs, waste sorting has become much easier.
Although waste sorting is not always easy, most people are willing to learn and do it right.
I can
通过阅读文本，识别并完成因果关系链，理解噪声污染的原因与影响。
结合文本线索和个人经验，做出合理的概括性陈述。
就垃圾分类等环保话题进行讨论，运用因果关系和概括策略表达观点。
Reflecting
Homework
用英语写3个因果关系句，描述生活中
一种环境问题(如空气污染、水污染)的
原因和影响。
观察你所在社区或学校的垃圾分类情况，
用英语写2-3句话做一个概括性陈述。

展开更多......

收起↑