(共23张PPT)
Unit 2 Saving the Earth
Topic 1
Pollution causes too many problems.
Section A
（录音）
A: Where have you been/traveled
B: I have been/traveled to ...
Kangkang and his friends are planning a picnic.
Can you guess where they will go
They will go to …
They will go to a beautiful place with ...
Would you like to have a picnic in such places
Do you know this place
It’s Lop Nur (罗布泊).
Do you know this place
It’s Lop Nur (罗布泊).
It used to be a beautiful place with…
过去是
Pollution really causes too many problems.
too many + 可数名词复数
too much + 不可数名词
much too + adj./adv.
We must protect our earth now.
What can you see in the picture
Can you see bees and butterflies dancing
Is the West Hill a beautiful place now
What has happened here
The flowers and grass
have gone!
There are several chemical factories
pouring waste water into the stream.
Is the West Hill a beautiful place now
There are several chemical factories pouring waste water into the stream.
several = a few
There be + sth./ sb. + doing sth.
There are many students reading books in the classroom.
Listen to Part 1a, answer the questions.
What did Kangkang say about
the West Hill in the past
Kangkang said that it was a beautiful
place with flowers and grass.
What did Kangkang say about
the West Hill at present
Kangkang said that the flowers
and grass had gone.
Kangkang: It’s a beautiful place with lots of flowers and grass.
Kangkang: The flowers and grass have gone!
影片
直接引语变成间接引语，句子结构的变化
He said, “I have been to the Great Wall. ”
He said to us that he had been to the Great Wall.
He said, “I'll give you an examination next Monday. ”
He told us that he would give us an examination the next Monday.
陈述句
用连词that引导，that在口语中常省略。主句的谓语动词可直接用引语中的said, 也可用told来代替，注意:可以说said that, said to sb. that, told sb. that.不可直接说told that。
解题步骤:
陈述句:
“I don’t like computers,” Sarah said to her friends..
Sarah said to her friends
that
I don’t like
computers.
said
didn’t
she
Sarah said to her friends that she didn’t like computers.
Sarah
1b
Work alone
In the past At present Reason
Kangkang said that
it was a beautiful
place with lots of
flowers and grass.
... Kangkang said
that the flowers
and grass had
gone.
... Maria said ...
In the past At present Reason
Kangkang said that
it was a beautiful
place with lots of
flowers and grass.
Kangkang said that the air was fresh and the water was clean, and that they would see bees and butterflies dancing. Kangkang said
that the flowers
and grass had
gone.
Kangkang said that the water was so dirty.
Kang said that it smelled terrible. Maria said that there were several chemical factories pouring waste water into the stream.
2. Work alone
It is generally believed that pollution does great harm to animals. Listen and number the pictures.
6
4
3
2
1
5
（录音）
a. air pollution
b. soil pollution
c. water pollution
d. light pollution
e. noise pollution
f. litter
3a
Work alone
1
2
3
4
5
6
3b Complete the following sentences with the word and phrases in 3a.
1. People use chemicals too much in their fields, so_________ causes unhealthy food.
2. People pour waste water into rivers and lakes, so__________ is almost everywhere in China.
3. __________makes people sick. It causes breathing problems and even cancer.
4. In some cities there’s too much __________ caused by many cars. The government has done something useful to stop it.
5. __________is harmful to eyes.
6. ___________influences our environment, so people shouldn’t throw it around.
3b Complete the following sentences with the word and phrases in 3a.
1. People use chemicals too much in their fields, so___________ causes unhealthy food.
2. People pour waste water into rivers and lakes, so____________ is almost everywhere in China.
3. __________makes people sick. It causes breathing problems and even cancer.
4. In some cities there’s too much ____________ caused by many cars. The government has done something useful to stop it.
5. ____________is harmful to eyes.
6. ___________influences our environment, so people shouldn’t throw it around.
soil pollution
water pollution
Air pollution
noise pollution
Light pollution
Litter
根据句意及首字母完成下列各句。
1. I have b_______ to the West Hill before.
2. All the flowers, grass and fish have g_______.
3. There are s________ chemical factories pouring waste water into the river.
4. We call a small narrow river a s_______.
5. Using chemicals too much in the fields may cause s________ pollution.
een
one
everal
tream
oil
What kind of pollution can you find around us
What problems does the pollution cause
Please talk about the following questions.
Smoking isn’t cool, it is harmful.
It is harmful to our health.
Air pollution may cause breathing
problems.
Talk about the following pictures with your partner.
We shouldn’t litter about.
It influences the look of our city.
Useful expressions
Oh, my goodness!
The flowers and grass have gone!
There are several chemical factories
pouring waste water into the stream.
Light pollution is harmful to eyes.
Now, it’s time for me to relax!
Thank you and Goodbye!
