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(共17张PPT)
最新人教版九年级英语
Section A, Unit 13
We're trying to save the earth!
U13, G9 B
Grammar Revision
We're trying to save the earth.
The river used to be so clean.
The air is badly polluted.
No scientific studies have shown that shark fins are good for health.
We should help save the sharks.
U13, G9,B
Protecting the environment
Pollution
Problems
Solution
Talking about the environment
noise pollution, air pollution, water pollution, land pollution
loud music, cars, rubbish, planes, littering, ships, factories, smoking, building houses, mobile phones, putting waste water into the river
close down the factories, help to clean up the river, take the bus or subway, ride a bike, bring a bag to go shopping, throw rubbish in the cans, turn off the lights when you leave a room, use paper or reusable, recycle books and paper, turn off the shower while you are washing your hair, don't use paper napkins, rethink, reuse, recycle
We are trying to save the earth.
The river used to be so clean.
It was considered the nicest river in town.
The air is badly polluted.
We should help save the sharks.
U13, G9 B
loud music
planes
building houses
mobile phones(machines, crowds, vehicles(车辆))
cars
factories
smoking
building houses(burning, power plants, nuclear waste disposal(核废物处理))
rubbish
littering
ships
factories(sewage(污水), industrial waste(工业废料), pesticides(农药))
U13, G9 B
really dirty
rubbish
fish
litter
waste
government
close down
clean up
U13, G9 B
A: The air is so haze(雾霾) these days. I can hardly breathe when I go outside.
B: But it used to be fresh! What happened
A: Factories are constantly emitting pollutants(排放污染物) and there are too many cars on the road.
B: We should take action to reduce air-pollution, like using public transportation more often.
U13, G9 B
land pollution
Land pollution refers to the degradation(损害) of the Earth's land surfaces, often caused by human activities.
1.Sources of land pollution
Industrial waste
Waste disposal(处理)
Agricultural activities
Deforestation(毁林) and urbanization(城市化)
2.Effects of land pollution
Soil degradation
Impact on wildlife
Human health risks
air pollution
Air pollution refers to the contamination(污染) of the air, whether indoors or outdoors. It occurs when harmful substances such as gases, liquids, or particles(粒子) enter the atmosphere, causing a physical, biological, or chemical change to the air. This can have serious impacts on human health, wildlife, plants, and the environment.
U13, G9 B
more cars
pollute
are throwing away
public places
U13, G9 B
...there are too many cars on the road. Their exhaust fumes are a major source of pollution.
Susan: And don't forget about those factories on the ourskirts. They burn a lot of coal and release a huge amount of black smoke.
Jason: Exactly! It's not just the air. I also noticed that there's too mach rubbish on the streets. People throw away plastic bottles everywhere.
Susan: You're right. Even in the park where we used to have picnics, there's always litter left behind. It's such a shame.
Jason: We really need to do something about this. Maybe we can start a community-wide clean-up campaign.
Suson: That's a great idea. And we should also raise awareness among people about the importance of environmental protection.
U13, G9 B
1.solve these problems
解决这些问题
2.cut down砍倒
3.take the bus or subway
instead of driving
乘公共汽车或地铁，而不是开车
4.ride a bike骑自行车
5.other advantages of bike riding骑自行车的其他好处
6.cost anything收费
7.take wooden chopsticks or plastic forks
拿木筷子和塑料叉子
8.buy takeaway food买外卖食品
9.throw rubbish in the bins
把垃圾扔进垃圾箱
10.keep public places clean and beautiful
保持公共场所的清洁和美丽
11.make a difference有所作为
12.lead to a better future
通向更美好的未来
70 million
develop laws to stop the sale of shark fins
WildAid and the WWF
1.save the sharks拯救鲨鱼
2.hear of听到；听说
3.shark fin soup鱼翅汤
4.a whole shark一整条鲨鱼
5.each time每次
6.a bowl of 一碗
7.cut off切断；切掉
8.throw the sharks back into the ocean
把鲨鱼扔回海里
9.be harmful to the environment对环境有害
10.no longer不再
11.at the top of the food chain in the ocean's ecosystem在海洋生态系统食物链顶端
12.the strongest in their food chains
它们食物链中最强的
13.in fact实际上；事实上
14.the number of some kinds of sharks
某些种类鲨鱼的数量
15.have fallen by over 90 percent下降了90%以上
16.in the last 20 to 30 years在过去的二三十年里
17.environmental protection groups环保团体
U13, G9 B
18.ask governments to develop laws to stop the sale of shark fins要求各国政府制定法律来禁止鱼刺的销售
19.so far迄今为止
20.no scientific studies没有科学研究
U13, G9 B
so
when
but
Although
if
so---结果, although----让步, if----条件, but----转折, when----时间
U13, G9 B
现在进行时
过去常常
被动语态
现在完成时
情态动词
现在进行时----am/is/are+动词的-ing I'm/You're/He's doing some reading.
过去常常----used to+动词原形 I used to work in the school.
被动语态----am/is/are/was/were/have(has) been/will be+动词的-ed The room is often cleaned by him
现在完成时----have/has+动词的ed I have/He has done some work.
情态动词----can/may/must/should+动词原形 I/He can speak English.
U13, G9 B
Have
taken
helped
considered
had
had
took
think
came
trying
wait
U13, G9 B
may/might
must/have to
can/should/could
can/could/should
have to
can/could/should
can/could
can/could
would/can/could
can----能，会 would----意愿 could----能力 have to----不得不 should----应该
must----必须，一定 may----可以，也许 might----可能，可以
U13, G9 B
take your own shopping bags when you go shopping
don't use disposal items(处理品) like disposal cutlery(餐具), cameras, etc.
turn off the lights when you leave the room
reduce the use of air conditioners(空调) in summer
grow more plants
U13, G9 B

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