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(共21张PPT)
Unit1
The Changing World
What changes have taken place around you
Section A(2a-2d)
Thinking Quality
Learning Ability
Emotional Attitude
Language Ability
Learning Objectives
Master key words about sandstorms and use target sentences to discuss environmental changes coherently.
Realize the value of environmental protection and build positive attitudes towards ecological development.
Sort listening information via group cooperation to improve information analysis and learning skills.
Compare past and present environment to analyze problems and conclude practical improvement methods logically.
Li Rui is showing the changes of his hometown.
changes in shopping
changes in medical care
changes in transpotation
changes in environment
What changes have taken place in Li Rui’s hometown
What are these signs stand for
sandstoms
difficult environment
farmland shortage
lack of technology
Rank the following problems from 1 to 4, with 1 being the worst. Give your reasons.
2a
I think... is the worst because...
I think sandstorms are worst, because they ruin crops and pollute our living air.
sandstoms
Poor water and dry soil stop crops from growing well and cut down harvests.
difficult environment
I think farmland shortage is the worst because Less farmland leads to less food.
farmland shortage
I think lack of technology is the worst because old farming wastes energy and makes it hard to get high crop yields.
lack of technology
What problems in 2a did they mention
sandstoms
difficult environment
farmland shortage
lack of technology
Listen to the conversation between George’s father and Li Rui’s grandfather.
What problems in 2a did they mention
2b
George’s father
Li Rui’s grandfather
sandstoms
difficult environment
farmland shortage
What action should be taken to solve these problems
Think and share
2c
Listen again and fill in the table.
How has the environment affected local lives
Past There used to be ______________ all the time, and the __________were getting smaller and smaller.
Locals worked by _______________.
Action Locals found a bush. It had _______________ roots that could _____________ the soil together.
They began planting it in sandy ___________, with the government’s support.
They had _____________________ to help.
Present The corn fields are ________________.
They have planted many bushes and ________________ since then.
There are ___________ sandstorms now and the environment is getting _________.
It has improved local lives.
sandstorms
fields
hand
long
hold
areas
machines
bigger
trees
fewer
better
Bob: I’m amazed by how green your hometown has become!
Grandpa: Have you seen the corn fields outside of the town yet
Bob: Yeah! They’re huge!
Grandpa: There used to be sandstorms all the time, and the fields were getting smaller
and smaller. Then, after one big sandstorm, we decided to do something.
Bob: What did you do
Grandpa: We found a small bush. It had long roots that could hold the soil together. We
began planting it in sandy areas. The government provided support too.
Bob: Wasn’t it difficult to plant so many bushes
Grandpa: Yes, it was. At the beginning, we worked by hand. Later, we had machines to
help. We have planted many bushes and trees since then. There are fewer
sandstorms now and the environment is getting better. It has also improved
our lives. Everyone has become richer and happier.
Past
Action
present
past
present
sandstorms
fields were getting smaller
worked by hand
plant with machines
corn fields
action
a small bush
with long roots
hold the soil together
fewer sandstorms
The environment is getting better
It has also improved our lives.
Everyone has become richer and happier.
A: The area used to be covered with sand.
B: What did they do to solve this problem
A: They planted bushes and trees. The land has become ...
Discuss how the problems in 2b were solved.
2a
everyone’s efforts
+
=
government’s support
A great project to solve the problem of desertification in China
What else can we do to help solve this problem
Save paper to cut down tree cutting.
节约用纸，减少树木砍伐。
Plant small trees or saplings every spring.
每年春天栽种小树苗。
Tell friends the harm of desertification.
向身边朋友宣传荒漠化危害。
Collect used paper for recycling.
回收废旧纸张，践行资源再利用。
一、单词默写。
1. _______ /r f/ adj.崎岖的 2. ________ / s ndst m/ n. 沙尘暴
3. __________ / fɑ ml nd/ n. 耕地 4. ________ / t d / n. 短缺
5. ________ /l k/ n. 缺乏 6. _______ /b / n. 灌木
7. ________ /ru t/ n. 根 8. ________ /s l/n. 土壤
9. ________ / s ndi/adj. 铺满沙子的；含沙的
10. ________ / ɡ v nm nt/n. 政府
11. ________ /s p t/n. & v. 支持 12. ________ /k n/n. 玉米；谷物
rough
sandstorm
farmland
shortage
lack
bush
root
soil
sandy
government
support
corn
Exercise
二、词组默写。
1. 带来;引起 _______________________ 2. 被……覆盖_______________________
3. 过去常常做某事_______________________ 4. 不仅如此_______________________
5. 到目前为止 _______________________ 6. 从那以后_______________________
7. 固土，保持水土 _______________________ 8. 改善某人的生活_______________________
9. 对…… 感到惊叹 _______________________ 10.决定做某事_______________________
11. 手工，用人力 _______________________ 12.很久，很长时间_______________________
bring about
be covered with
used to do sth
not only...but akso...
so far
since then
hold the soil
improve sb’s life
be amazed at
decide to do sth
by hand
for a long time
三、用括号内所给词的适当形式填空。
1.Great changes __________________ (take place) in Li Rui's hometown over the years.
2.Li Rui's father ___________________ (not visit) his hometown since 20 years ago.
3.In the past, it __________ (take) half a day to reach the town, but now it only takes an hour.
4.They used to __________ (travel) far to see a doctor, but now there is a new hospital in the town.
5.We began planting it in sandy areas. The government __________(provide) support too.
have taken place
hasn’t visited
took
travel
provided
Unit1
The Changing World
What changes have taken place around you
Section A(2a-2d)

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