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(共23张PPT)
Section B (3a-Self check)
We’re trying to save the earth.
Unit 13
Learning objectives
1
2
3
对前面所学的词汇、短语和句式进行梳理，建构起本单元的基本语言框架；能够通过对单元话题核心内容的梳理建构起本单元的写作框架，了解具体的写作要求以及评价标准。（学习理解）
结合写作框架完成对应的写作任务，学会写一封信给市长，说明你所在城市的环境问题和你的建议；能够结合所学知识完成对应的练习。（应用实践）
将所学或者所了解到的一些核心环保理念应用到实践中，在日常生活中做一些力所能及的事情保护地球，保护我们的美丽家园。（迁移创新）
通过本课时学习，我们能够：
Free Talk
What has caused the great changes in our earth
Is our city still a nice city
Why or why not
Think about the environment in your town/city and complete the chart below.
Which parts of the town/city have a nice environment Why are they nice Which parts need to be improved Why
Good environment Why Bad environment Why
parks
the air is clean
streets
so many trees
restaurants
clean and tidy
rivers
a lot of rubbish
so many cars
air
streets
too many factories
3a
Write a letter to the city mayor about the problems and your suggestions.
In your letter, describe the environmental problems in your town/city.
3b
What are the problems
Where are they
What or who is causing these problems
Then, give suggestions or possible ways to solve the problems.
I think that ...
We should/could ...
I suggest ...
本次写作内容是一封书信，信中首先要介绍你所在城市存在有哪些环境问题，是谁造成的这些问题，然后提出解决这些环境问题的方法和措施，可以结合3a中列举的问题和前面学过的解决办法来完成这封信。
【写作任务】
内容：环境问题，产生原因，解决措施
文体：应用文
时态：一般现在时
人称：第一人称
【审清题目】
Environmental problems
water pollution
air pollution
…
noise pollution
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
…
What caused the environmental problems
the environment around us is becoming worse and worse…
we can't see…
The air is so…
Solutions
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
Outline
Beginning
Body
Ending
I’m...
I like this city, but the environment around here is getting worse and worse.
自我介绍及写信目的
展开叙述环境问题，原因以及治理措施
表达希望
With the …, there are too many… Cars have made…
I think that governments should… I suggest everyone… We should call on…
I hope the environment in our city gets better and better.
Dear Mayor,
I am Li Hua, a middle school student.I like this city, but the environment around here is getting worse and worse.
With the development of the society, there are too many cars on the streets in our city. Cars have made the air unhealthy for people to breathe. Black smoke and poisonous gas are given off by factories. Factories also put waste into the river. And wherever we go, we can find rubbish.
Sample 1
注意书信的格式
时态用一般现在时，以第一人称为主
多种句型陈述问题
Now more and more people have realized these problems. I think that governments should close down the factories and develop laws to stop people from driving cars every day. I suggest everyone in this town should help to clean up the river and the streets. We should call on everyone in the town to throw rubbish in the dustbins.
I hope the problem will be solved in the near future and our home will become better and better.
Yours sincerely
Li Hua
从不同主体出发给出建议
提出希望和号召
结尾落款
Dear Mayor,
I am Li Hua, a middle school student.I like this city, but the environment around here is getting worse and worse.
With the development of the society, there are too many cars on the streets in our city. Cars have made the air unhealthy for people to breathe. Black smoke and poisonous gas are given off by factories. Factories also put waste into the river. And wherever we go, we can find rubbish.
开篇点题
说明原因
Sample 2
越来越差
把垃圾倒入河中
无论我们去哪
Now more and more people have realized these problems. I think that governments should close down the factories and develop laws to stop people from driving cars every day. I suggest everyone in this town should help to clean up the river and the streets. We should call on everyone in the town to throw rubbish in the dustbins.
I hope the problem will be solved in the near future and our home will become better and better.
提出建议
表达期望
Yours sincerely
Li Hua
越来越多的人
关闭
禁止人们开车
清理
号召
越来越好
Peer-editing
项目 标准 自我评价 同伴评价 教师评价
结构（2分） 段落合理 （1 分）
衔接自然 (1分)
内容（5分） 要点1:当今的环境问题（1分）
要点2:你的建议（2分）
要点3:呼吁（1分）
拓展合理 (1分)
语言（2分） 词汇丰富 (1分)
句法正确 ，语言优美( 1分)
卷面（1分） 书写工整（ 1分）
Let’s care for our city and make it a better place!
Self-Check
1. Write different forms of the words. Then add more to each group.
v. – n.
pollute —
act —
protect —
inspire —
build —
create —
pollution
action/actor
n. – adj.
fame —
wood —
science —
health —
south —
care —
protection
inspiration
building
creativity
wooden
scientific
healthy
southern
careful
famous
adj. – n.
different —
important —
adj. – adv.
slow —
wide —
sudden —
real —
Self-Check
1. Write different forms of the words. Then add more to each group.
difference
importance
slowly
widely
really
suddenly
Add more words to each group.
educate—education, meet—meeting, paint—painting
wool—woolen, north—northern, wind—windy
silent—silence, patient—patience, absent—absence
actual—actually, quick—quickly, sure—surely
Group work
v.—n.：
n.—adj. :
adj.—adv.:
adj.—n. :
Statement
The river used to be so clean.
We have seen many changes in the environment.
People should take public transportation more.
The river is polluted by factories.
The air pollution is getting worse and worse.
Grammar
Present progressive
Modal verbs
Passive voice
Used to
Present perfect
Self-Check
2. Match each statement to the correct grammar structure.
Kinds of pollution Ways to cut down
water pollution
land pollution
noise pollution
air pollution
ask factories not to throw waste into the rivers; remind people not to litter
ensure that factories throw away industrial waste in a responsible way; try not to use plastic bags when shopping
build airports away from places where people live
encourage people to use public transportation instead of driving; reduce the number of factories that burn coal
3. Write ways to cut down on these kinds of pollution.
Homework
Must do: 1. Polish your passage according to your group members’ advice;
2. Finish the exercises;
3. Preview the new words and expressions in Unit 14.
Try to do: Make a mind map to review Unit 13.
Thank You!

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