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(共26张PPT)
Unit 2 Saving the Earth
Topic 1 Pollution has caused too many problems.
Section A
Have you ever had a picnic
Kangkang, Jane, Maria and Michael are planning a picnic for Sunday.
Kangkang advised to go to the West Hill.
a place with
beautiful flowers
many hills
green trees
What else could you see there
We could see bees and butterflies dancing.
bee
butterfly
The flowers and grass have gone!
Oh, my goodness. What a mess!
Look! There are several chemical factories pouring waste water into the stream.
= have disappeared.
Is it still beautiful now
真是一团糟！
The West Hill isn’t as beautiful as before. .
What a shame!
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
(Kangkang, Jane, Maria and Michael are planning a picnic.)
J&Ma: Kangkang, where shall we go
K: What about the West Hill I went there two years ago. It was a beautiful place. There were lots of flowers and grass. The air was fresh and the water was clean, and you could see bees and butterflies dancing.
Mi: Sounds great! Let’s go there.
1a
plan (to do )sth
(On Sunday, they come to West Hill.)
K: Oh, what a mess! The flowers and grass have gone!
The water is so dirty. It smells terrible. What has
happened here
Ma: What a shame! Look, there are several chemical
factories pouring waste water into the stream.
K: Everything has changed.
Mi: Do you still want to have a picnic here
J: Of course not.
1a
pour…into…
waste: adj. 废弃的，无用的
真是一团糟！
=What has happened to the West Hill
There are several chemical
factories pouring waste water
into the stream.
1. There be sb. / sth. doing sth…
……有……在做某事
There are some people waiting for the bus at the bus stop.
2. mess n.
凌乱
客厅凌乱不堪。
The living room is in a terrible mess.
3. pour
Please pour the wine into the glass.
外面正下着倾盆大雨。
It is pouring outside.
pour away
倒出；倾泻
pour cold water on sb.
倒掉
泼某人冷水，使某人扫兴
4. waste:
污水
waste water
他的等待只是浪费时间。
别浪费水资源，我们应当节约每一滴水!
His waiting is just a waste of time.
Don’t waste water! We should save every drop of it.
再次利用化工废弃物是一个好主意。
It’s a good idea to reuse the chemical waste.
1) n. 浪费a waste of…，废弃物，废料 [u]n.
2) adj. 废弃的，丢弃的，无用的
3) v. 浪费
反义词 save
1a Look, listen and say
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.
1c Read 1a and complete the sentences in the table. Then retell 1a to your partner.
1c Read 1a and complete the sentences in the table. Then retell 1a to your partner.
Two years ago
1. It was a _______________.
2. There were
_______________________.
3. The air was ___________________
__________ and you could see __________________________.
beautiful place
lots of flowers and grass
fresh and the water
bees and butterflies dancing
was clean
Now
1. ___________________
have gone.
2. The water is _________and smells
________.
3. There are several ________________ pouring _____________ into the stream.
4. ____________has changed.
The flowers and grass
so dirty
terrible
chemical factories
waste water
Everything
1c Read 1a and complete the sentences in the table. Then retell 1a to your partner.
2 Work in pairs.
village/flowers and grass
villagers/destroy
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.
2 Work in pairs.
hill / trees
farmers / cut down
A: There were lots of trees
when I visited the hill last year.
B: But now the trees have gone.
A: What has happened here
B: The farmers have cut them down.
2 Work in pairs.
lake / fish
factory / pollute
A: There were lots of fish
when I visited the lake last year.
B: But now the fish have gone.
A: What has happened here
B: The factory has polluted the lake.
The environment is becoming worse and worse.
So more and more animals are dying.
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
Exercises
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
Exercises
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

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