(共22张PPT)
Unit 2 Saving the Earth
Topic 1 Pollution has caused too many problems.
Section A
Studying aims 学习目标
1. Learn some words and phrases:
bee, butterfly, mess, shame, several, pour, waste, destroy, pollute, goodness
see sb. doing sth. pour…into..
2. Know the differences between Simple Past
and Present perfect.
A: Where have you been/traveled
B: I have been/traveled to ...
Have you ever had a picnic
Kangkang, Jane, Maria and Michael are planning a picnic for Sunday.
They will go to the West Hill.
What can you see there
We can see bees and butterflies dancing.
bee
butterfly
Is the West Hill beautiful
a place with
beautiful flowers
many hills
green trees
What a shame/mess!
The flowers and grass have gone!
Oh, my goodness. What a mess!
Is it beautiful now
What has happened there
P27 1a mp3
1a Listen, look and say.
1b Listen to 1a and mark the words with P (Past) or N (Now).
____ beautiful ____ butterflies ____ dirty
____ grass ____ terrible ____ factory
____ bees ____ fresh ____ clean
____waste water
P
P
N
P
N
N
P
P
P
N
There are several chemical
factories pouring waste water
into the stream.有几家化工厂正在往小溪里排放废水。
There be…doing sth…
……有……在做某事
e.g. There are some people waiting for the bus at the bus stop.
waste water
waste paper
Waste water. 浪费水。
Don’t waste paper. 不要浪费纸。
waste
adj.
v.
倒出；倾泻
pour… into… 把……倒入……
e.g. Pour red wine into the glass.
1c Read 1a and complete the sentences in the table. Then retell 1a to your partner.
Two years ago Now
1. It was a _______________.
2. There were _______________________.
3. The air was _______________________ and you could see _______________________. 1. ___________________
have gone.
2. The water is ________and smells ___________.
3. There are several ________________ pouring _______________ into the stream.
4. _____________has changed.
beautiful place
lots of flowers and grass
fresh and the water was clean
bees and butterflies dancing
The flowers and grass
so dirty
terrible
chemical factories
waste water
Everything
2 Work in pairs. Look at the pictures and make up conversations similar to the example with your partner.
Example:
A: There were lots of flowers and grass
when I visited the village last year.
B: But now the flowers and grass have
gone.
A: What has happened here
B: The villagers have destroyed them.
lake/fish
factory/
pollute
hill/ trees
farmers/cut down
village/flowers and grass
villagers/destroy
4 Work in groups and talk about pollution in a place you are familiar with. The following sentences may help you.
…ago, it was… Now, … have/ has gone. What has happened Everything has changed. Oh, my goodness!
3 A. Listen to the sentences and number the pictures.
5
3
2
1
4
6
1. People _____ _____ _____ too many trees, so
I don’t have enough leaves to eat.
2. I live in trees but now many trees _____ _____.
3. I like leaves and grass, but now they _____
____________.
4. I _____ _____ hungry for months because of
less bamboo.
5. Human polluted the sea, so I _____ _____ _____.
6. The water _____ _____ many years ago. But it
_____ _____ _____ for me to live in now.
B. Listen again and complete the sentences.
have cut down
have gone
have
disappeared
have been
don’t live happily
was clean
is too dirty
1. Express exclamation:
What a mess! What a shame! Oh, my goodness!
2. Know the differences between Simple Past
and Present perfect.
It was a beautiful place.
Everything has changed.
1. Some words:
bee, butterfly, mess, shame, several, pour, waste,
destroy, pollute, goodness
2. Some phrases:
see sb. doing sth. pour…into..
3. Some sentences:
There are…doing…
单项选择
( ) 1. Look! There are some boys ________ on the playground.
A. play football B. are playing football
C. playing football D. plays football
( ) 2. — I’m sorry I can’t go shopping with you. I am ill.
— ________
A. What a mess! B. What a shame!
C. What a pity! D. B and C
( ) 3. — Don’t ________ water. We must save every drop of it.
— Sorry, I won’t do it again.
A. waste B. throw
C. play D. leave
C
D
A
用所给动词的适当形式填空。
1. When I entered the room, I saw Maria ________ (read) a
Chinese book.
2. What a shame! The flowers and trees in the park _________
(go).
3. Everything _____________ (change) in the past few years.
4. Pandas don’t have enough bamboos ________ (eat) now
because of the pollution.
5. — Where have they been
— They __________ (be) to the Great Wall. They _______
(have) a good time there the day before yesterday.
reading
have gone
has changed
to eat
have been
had
Thank you.
