高中英语必修三 Unit 4 Astronomy: the science of the stars 听说课件(共16张PPT)

(共16张PPT)
Unit 4 Astronomy: the science of the stars

listening and speaking
Michael Jackson’s Earth song
Revision: 1.What is it? Why is it blue?
B
It’s the earth, which is called the water planet.
It’s our home planet, so we have the duty to
take good care of it. However,…





Revision: 2.What problems are mankind causing?

They are putting too much CO2 into the atmosphere and polluting water.
They are putting too much CO2 into the atmosphere
What will happen with too much CO2 into the air?

They are putting too much CO2 into the atmosphere and polluting water.
global warming
icebergs and glaciers melt
rise of the sea level
the drowning of cities
No home
Lead-in: What can we do to solve the problem?

Let’s live a low-carbon life and do it now!
Reading and analyzing: Huang Ting from Class1,Senior1designed a questionnaire and did a survey among Dongsheng Senior High Students on low-carbon life.
1.What much do you know about what a low-carbon life is?
Only a little(12.02%)
Not at all (4%)
Some (14.75%)
Very well (69.4%)
Reading and analyzing:Huang Ting’s survey

2. Do you often do useful things consciously to reduce pollution?
Often(32.4%)
Occasionally (61.57%)
Never(6.01%)
Reading and analyzing: Huang Ting’s survey

3. Do you form a habit of saving water an electricity in the dormitory?
Never (4.92%)
Sometimes(36.07%)
Often(59.02%)
Listening and thinking: Huang Ting’s report

According to my survey, I can draw a conclusion that most of the students in our school know about low-carbon lifestyle and its importance, but what they have done and known about are not enough. Many students are willing to do small things around them, but they are not very active and don’t know what they can do clearly. Therefore a discussion about how to take action is necessary.
Discussion (group work): A low-carbon life means?a kind of lifestyle in which people do their best to reduce energy consumption and greenhouse gas emission, but what small things can we do as a senior high school student to lead a low-carbon life?
How to save water at home and at school? (Group1)
How to save electricity at home and at school? (Group2)
How to choose proper means of transportation (Group3)
What other small things can you do to reduce pollution and waste? (Group4)

List as many things that we should or we could do as you can and the group who list the most is the winner today.

Model1: Every drop of water is precious. We can save it in many ways.
1.Wash clothes by hand three times a month.
2. Remember to turn off water taps when we are not using them
3.Take a short-time shower with a low-flow showers.
4.Don’t flush the toilet very often
…





What is a low-carbon life?
What can we do to leave a low-carbon life?
3. Small things can make a big difference. Let’s act now!
Summary
Homework:
Finish a written proposal on low-carbon life
Only by taking good care of our earth today will it be more beautiful tomorrow.

Remember: Every little contribution counts.

Thanks for your attention!