Unit2 Topic1 Pollution has caused too many problems.SectionA 课件（21张，无素材）

Unit 2 Saving the Earth
Topic 1 Pollution has caused too many problems.
Section A
1. Key points:
Words and phrases: bee, butterfly, mess, shame, several, pollute, waste, villager, destroy, cut down, goodness, pour, see sb./sth. do sth., see sb./sth. doing sth., cut down, my goodness
Sentences: What a shame! / What a mess!
The flowers and grass have gone!
What has happened here?
There be sth./sb. doing sth.
There are several factories pouring waste water into the stream.
Everything has changed.
Grammar: differences between Simple Past and Present Perfect tense.
2. Difficult points：
正确使用there be sth./sb. doing sth.来表达“有某人/物正在做某事” 。
区别使用短语see sb./ sth. do sth.和 see sb. / sth. doing sth.。
能正确地以口头和书面形式区别使用一般过去时和现在完成时。
Learning aims
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!
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 beautiful now?
What has happened there?
P27 1a mp3
waste water
waste paper
Waste water. 浪费水。
Don’t waste paper. 不要浪费纸。
waste
adj.
v.
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.
倒出；倾泻
pour… into… 把……倒入……
e.g. Pour red wine into the glass.
1 The flowers and grass have gone.
花儿和草都消失啦。
go 在此处为不及物动词，意为“不复存在，不见了，丢失，失窃”。e.g. My new bike has gone. I can’t find it. 我的新自行车不见了，我找不到它了。
2 Look , there are several chemical factories pouring waste water into the stream.
看，有几个化学工厂正把废水排入河流中呢。
a. There be + sth. /sb. doing sth.为固定句型，意为“有某人或某物正在做某事”。
e.g. Look! There is a little girl crying in the street．
瞧！有个小女孩正在街上哭。
b. pour ... into把……倒入。
e.g. Please pour the sugar into a cup.请把糖倒入杯里。
c. waste adj. 废弃的，无用的，丢弃的。
n. 浪费，废弃物 e.g. a waste of time 浪费时间。
v. 浪费 e.g. waste one’s words 白费口舌。
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
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
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
( )1.—How long _____ you _____ here?
—Since I came here five years ago.
A.have, studied B.did, live C.do, stay D.were, swimming
( )2. —Don’t eat too much candy, for it’s_____ your teeth.
—Oh,I get it.Thank you.
A.harm to B.good for C.badly to D.harmful to
( )3.There is _____ pollution in the world. We must stop it.
A.much too B.too much C.many too D.too many
A
D
B
Homework
1.Write a passage about pollution in some place you know.
2. Talk about how many kinds of pollution you know and make a list.
Thank you.