仁爱科普版九年级上册 Unit 2 Topic 2 All these problems are very serious. Section C 课件（共16张PPT）

Unit 2 Saving the Earth
Topic 2 All these problems are very serious.
Section C
Welcome to my class!
________________
__________________
______________
the earth
we must do something
problems and effects
Choose the best title and match the right key words with each part.
Environmental problems
Part1:
Part 2:
Part 3:
①
②--⑥
⑦
We can divide a passage according to the key words.
Part 1
How old is the earth?
4.6 billion
years old
How long have we lived on the earth?
35,000 years
Has our planet changed a lot?
Yes
Read and find the best titles of paragraph 2-6:
Paragraph 2:_____________
Paragraph 4:_____________
Paragraph 6:_____________
Sometimes we can get the key words from the first sentence.
Traffic pollution
Factory pollution
The ozone hole
Fewer trees
More carbon dioxide
Paragraph 3:_____________
Paragraph 5:_____________
二氧化碳
/‘ka: b?n dai’a: ksaid/
臭氧
/’?uz?un/
fewer trees
traffic pollution
factory pollution
become deserts;
disappear
the ozone hole
more carbon dioxide
pollute the air;
have health problems
pollute land and water; be dead
…
…
fewer trees
moreco2
traffic pollution
factory pollution
Group work:
Write a speech to call on(号召） people to protect our environment.
You can begin like this:
Ladies and gentlemen, attention please!
I am from the Green Organization. _________
________________________________________________________________________
So please join us! Thanks for your attention!
All over the world, people have cut down millions of trees. When it rains or when the wind blows, the earth is taken away. Forests have become deserts, so many kinds of animals and plants are disappearing.
_______________________________________________________________
___________________________________________________________________
__________________
________________________________
_______________________________________
effects
problems
We should plant more trees……
what to do
As a student, what do you think you
can do to make our earth beautiful in
our daily life?
Thank you
CO2 carbon dioxide increase a lot, form a “blanket”, the heat from the sun can’t escape
二氧化碳
/‘ka: b?n dai’a: ksaid/
毛毯
/ ‘bl??kit/
All over the world, people have cut down millions of trees. When it rains or when the wind blows, the earth is taken away. Forests have become deserts, so many kinds of animals and plants are disappearing.
_______________________________________________________________
___________________________________________________________________
__________________
________________________________
_______________________________________
effects
problems
Paragraph 2
We can find the effects of other environmental problems in this way.