资源简介

(共43张PPT)
Unit 13 We’re trying to save the earth !
Section B (3a-self check)
目录
CONTENTS
1. Lead in
2. Pre-writing
3. While-writing
4. Post-writing
6. Summary
7. Exercise
8. Homework
5. Self Check
Language goals
语言能力：复习并巩固本单元所学词汇。能够掌握后缀构词法。
思维品质：通过运用正在进行时、现在完成时和被动语态等描述污染、环境保护和循环再利用，来培养学生爱护环境和保护动物的意识。
文化意识：了解环境问题的现状，起因以及解决方法，激发学生强烈的社会责任感和对未来发展的思考。
学习能力： 能结合本单元的环境问题和环保措施，完成写作任务。能够识别句子结构，熟练掌握现在进行时、现在完成时、被动语态、情态动词和used to的用法。
第一部分
PART 01
Lead in
Lead in
What kinds of environmental problems do you know
Lead in
different kinds of pollution
waste pollution
water pollution
noise pollution
light pollution
land pollution
air pollution
Lead in
waste of energy
Forget to turn off the tap,the shower or the light and waste paper.
break the balance of ecosystem
Lead in
cut down trees
kill animals
第二部分
PART 02
Pre-writing
What can we do
to save the earth
Pre-writing
ways to let people know
hand out notices
make videos
post articles on the Internet
make speeches
Pre-writing
ways to cut down pollution
take the bus, ride a bike or walk instead of driving a car
Pre-writing
ways to cut down pollution
stop factories from putting waste into the river and burning coals
Pre-writing
ways to cut down pollution
use reusable bags instead of plastic bags
don’t take wooden chopsticks or plastic forks
sort garbage
Pre-writing
ways to save energy
turn off the tap,the shower or the light and waste paper when not using
Pre-writing
ways to save energy
Don’t use paper napkins .
Recycle things that we don’t use anymore.
Pre-writing
ways to keep the balance of ecosystem
plant more trees
save the animals
stop ocean plastic pollution
第三部分
PART 03
While-writing
While-writing
Write a letter to the city mayor about
the problems and your suggestions.
In your letter, describe the environmental
problems in your town/city.
1. What are the problems
2. Where are they
3. What or who is causing these problems
Then, give suggestions or possible ways to solve the problems.
While-writing
Letter
Problems
Causes
Solution
Beginning
Body
Ending
审体裁 ______________
审人称 ______________
审时态 ______________
应用文
第一人称
一般现在时
While-writing
The structure of the letter
What caused the environmental problems
Problems
pollution
waste of
energy
break the balance
of ecosystem
waste water
waste gas
plastic bags
…
forget to turn off the light
or shower
…
cut down too
many trees
kill the animals
…
the environment around us is becoming
worse and worse…,we can't see…,the air is so…
While-writing
How to save the earth
should/
can …
had
better ...
It’s necessary /
important to …
Save the energy
Cut down the pollution
other
ways
ride bikes or walk instead of…
…
turn off the light /shower
…
keep the balance of ecosystem,
plant more trees, …
the little things in
daily lives
government
and public
While-writing
We should...
We’re supposed to ...
We can...
It’s important/necessary to...
We’d better...
We’re trying to...
While-writing
A sample writing
Dear Mayor,
I’m glad to write this letter to you. I’d like to talk about the environment in our city.
Our city is not as beautiful as before. Environmental problems are becoming more and more serious. The river is dirtier. People are throwing litter into the river or in public places like parks. This is turning beautiful places into ugly ones. Factories are putting waste into the river and they burn coal, which also pollute the air with a lot of black smoke. And most of us ride in cars to school even if they live close to school. I think it is time to play a part in saving the earth.
problems
causes
While-writing
A sample writing
First of all, we should let more people know the importance of environmental protection. We’re supposed to save water and energy in our daily life. Second,to cut down air pollution, we should ride a bike or walk to school instead of riding in cars. If it’s far, we can take the bus or subway. Third, we shouldn’t throw litter here and there. We should put it in the bins. As for waste pollution, we should never take wooden chopsticks or plastic forks when buying takeaway food. We can also use reusable bags instead of plastic bags. What’s more, the government should close down the factories that are putting waste into the river or giving out a lot of black smoke.
The earth is our home and we have the duty to take care of it for ourselves. So I hope that you can take my advice. Thank you.
solutions
While-writing
Work in groups and write about environmental problems.
第四部分
PART 04
Post-writing
Show time
Post-writing
Talk about your passages according
to the assessments on the right.
ASSESSMENT（评价标准） Structure （结构）2分 Is the article divided into several parts
Content （内容）5分 Are all the details stated
If not, add the missing details.
Language （语言）6分 Any mistakes (spelling or grammar)
If yes, correct them.
Any linking words
If yes, circle them.
Any good vocabulary or sentences
If yes, underline them.
Handwriting 2分 Is it clean and tidy
第五部分
PART 05
Self Check
Self Check
1. Write different forms of the words. Then add more to each group.
pollute —act —protect —inspire —build —create —
pollution
action
protection
inspiration
building
creativity
fame —
wood —
science —
health —
south —
care —
famous
wooden
scientific
healthy
southern
careful
v.---n.
n.---adj.
different —important—sunny —noisy —harmful —beautiful —woolen —
difference
importance
sun
noise
harm
beauty
wool
adj. — adv.
slow —
wide —
sudden —
real —
quick —
true —
possible —
slowly
widely
suddenly
really
quickly
truly
possibly
Self Check
adj.---n.
adj.---adv.
Self Check
2 Match each statement with the grammar structure.
Statement Grammar
The river used to be so clean. Present progressive
We have seen many changes in the environment. Modal verbs
People should take public transportation more. Passive voice
The river is polluted by factories. used to
The air pollution is getting worse and worse. Present perfect
Self Check
3 Write ways to cut down on these kinds of pollution.
Kinds of pollution Ways to cut down
water pollution
land pollution
noise pollution
air pollution
take off the shower while washing hair
take your own bags when shopping
take public transport rather than drive / avoid using air conditioners
keep voice down in public places
第六部分
PART 06
Summary
Summary
Environmental problems
第七部分
PART 07
Exercise
Exercise
一、单项选择
1. I like hiking in the forest because the air is pretty ______.
A. free B. dirty C. polluted D. fresh2.
—How much is the dress
—It _____ me 400 yuan.
A. cost B. spent C. took D. paid3.
In the past few years, great changes _________ in Chongqing.
A. take place B. took place
C. have taken place D. have been taken place
4. Not only _____ food and clothes to the poor people, but also they helped them build houses.
A. did they gave B. did they give
C. gave they D. give they
D
A
C
B
Exercise
二、提示词填空
5. There were many people ________ (take) part in the activity yesterday.
6. Jim's health ____________ (improve) greatly since he started on this new diet.
7. The lights should __________ (turn) off when leaving the room.
8. Tigers are the _________ (strong) animals in their food chain.
9. I thought about _______ (go) to Thailand for vacation.
took
has improved
be turned
strongest
going
Let’s care for the earth and make it a better place!
第八部分
PART 08
Homework
Homework
Polish your writing according to
your group members’ advice.
Thank you !

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