Unit 2 Saving the Earth Unit 2 Saving the Earth

Topic 1Topic 1Pollution causes too many problems. Pollution causes too many problems.

Section ASection 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 ).

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…

It used to be a beautiful place with…

过去是过去是

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.

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 factoriespouring 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 flowersand grass had gone.

Kangkang: It’s a beautiful place with lots of flowers and grass.

Kangkang: The flowers and grass have gone!

（录音）

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’tshe

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.

66 44 33

22 11 55

（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 birds.6. ___________influences our environment.

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 birds.6. ___________influences our environment.

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.1. I have b_______ to the West Hill before.2. All the flowers, grass and fish have 2. All the flowers, grass and fish have g_______.g_______.3. There are s________ chemical factories 3. There are s________ chemical factories pouring waste water into the river.pouring waste water into the river.4. We call a small narrow river a s_______.4. We call a small narrow river a s_______.5. Using chemicals too much in the fields may 5. Using chemicals too much in the fields may cause s________ pollution.cause s________ pollution.

1. I have b_______ to the West Hill before.1. I have b_______ to the West Hill before.2. All the flowers, grass and fish have 2. All the flowers, grass and fish have g_______.g_______.3. There are s________ chemical factories 3. There are s________ chemical factories pouring waste water into the river.pouring waste water into the river.4. We call a small narrow river a s_______.4. We call a small narrow river a s_______.5. Using chemicals too much in the fields may 5. Using chemicals too much in the fields may cause s________ pollution.cause s________ pollution.

een

oneeveral

tream

oil

What kind of pollution can you find What kind of pollution can you find around us?around us?

What problems does the pollution What problems does the pollution cause?cause?

What kind of pollution can you find What kind of pollution can you find around us?around us?

What problems does the pollution What problems does the pollution cause?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!Oh, my goodness!

•The flowers and grass have gone!The flowers and grass have gone!

•There are several chemical factories There are several chemical factories pouring waste water into the stream.pouring waste water into the stream.

•Light pollution is harmful to birds.Light pollution is harmful to birds.

Now, it’s time for me to relax!Thank you and Goodbye!