Unit 13 We're trying to save the earth!Section A1(1a-2d) 课件(共22张PPT，含内嵌音频) 人教版英语九年级全册

(共22张PPT)
Section A1(1a-2d)
Unit 13
We're trying to save the earth!
The earth is polluted.
Lead-in
air pollution
The factories that
burn coal pollute
the air with a lot of
black smoke.
coal n. 煤炭
We should throw away litter in the bin.
bin n. 垃圾箱
land pollution
扔掉
People are throwing away
things every day.
There is too much rubbish and waste.
noise pollution
The cars make much noise.
People build houses.
Cars also pour dangerous gases into the air.
Some people smoke in public places.
Factories put waste into the river.
water pollution
waste
n. 废水
1a
Here are some words related to different kinds of pollution. Write them in the box below. Then add more words.
Listen and complete the sentences.
really dirty
rubbish
fish
litter
waste
government
close down
clean up
含情态动词的被动语态：情态动词+be+v.过去分词
1b
河底
1c
Role-play the conversation.
Mark: The river was dirty. Even the bottom of
the river was full of rubbish.
Tony: But it used to be so clean!
Mark: Yes, but people are littering in the
river.
Tony: Everyone in this town should play a
part in cleaning it up!
used to do sth.过去常常...
play a part in +v.ing
参与...，在...方面起作用
2a
A. land pollution
B. air pollution
C. noise pollution
D. water pollution
Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.
2b
Listen again and complete the sentences.
1. The air is badly polluted because there are __________on the road these days.
2. Factories that burn coal also ______ the air with a lot of black smoke.
3. There is also too much rubbish and waste. People ___________________things every day.
4. People are also littering in____________ like parks. This turns beautiful parks into ugly ones.
more cars
pollute
are throwing away
public places
adj.丑陋的
So together,our actions can make a difference and lead to a better future!
2d
Read 2d and complete the mind map.
Role-play the conversation.
2d
advantage n.优点；有利条件
（反）disadvantage 缺点
减少，砍倒
n.塑料，adj.塑料的
make a difference to对...有作用或影响
外卖食物
Summary
Key words
Summary
Key phrases
We only have one earth!
Let's play a part in loving and saving it!
1.He ___ go out with his parents, but now he ____
staying at home alone.
A. used to; is used to B. is used to; used to
C. used to; used to D. is used to; is used to
2. The interesting book ___ me 10 yuan.
A. took B. paid
C. spend D. cost
Exercises
3. We must do something useful to ___ pollution.
A. cut off B. cut up
C. cut down D. cut in
4. Smoking can ___ lung cancer. You’d bettter give it up.
A．work on B．lead to
C．take away D．put out