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(共18张PPT)
Unit 1 The Changing World
Lesson 2 Section A (2a—2d)
Activity 1: Revision.
Li Rui’s hometown used to be a sandy area with very few plants
Why was it so terrible
Let’s think
Activity 2: Watch a video and learn.
sandstorms
1.What terrible weather can you see in the video
2.What bad things do sandstorms bring
water shortage
farmland shortage
3.Did local people have easy ways to fix these problems
lack of technology
Activity 3: Let’s discuss: which one do you think is the most serious disaster for local people (P3 2a)
Key stentences：
I think ... is the worst because ...
In my opinion, ... is more serious than ... because ...
We rank ... as number 1 because it causes ...
Example：In my opinion, farmland shortage is more serious because without farmland, people cannot grow enough food. This may lead to hunger and high food prices.
Look, George’s father and Li Rui’s grandfather are talking about the changes in Li Rui’s hometown.
Activity 4：Listen to the conversation between George’s father and Li Rui’s grandfather. What problems in 2a did they mention （P3 2b）
Activity 5.1：Listen again and fill in the table. （P3 2c）
n.
n.
n.
adj.
v.
n.
n.
adj.
n.
adj.
adj.
Activity 5.2：View and predict what speech of word is probably missing in the blanks
Activity 5.3：Listen carefully again, and check the answers.
1.What changes have taken place in Li Rui’s hometown
Past There used to be __________ all the time, and the ______ were getting smaller and smaller.
Locals worked by ___________.
Present The corn fields are _________.
They have planted many bushes and _________ since then.
They are __________sandstorms now and the environment is getting _________.
It has improved local lives.
sandstorms
fields
hand
huge
fewer
trees
better
2.What did they do to solve the problems
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.
long
hold
areas
machines
Activity 6.1: Read the listening scripts on page 94-95 and think how the environment has affected local lives
How the environment has affected local lives
Let’s think
Activity 6.2：Free talk.
1.How the environment has affected local lives
Let’s think
Example：The hometown is becoming more and more beautiful.
The local people have become richer and happier.
...
Activity 6.2：Free talk.
2.How these problems were solved in Li Rui’s hometown
Let’s think
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 ...
Example:
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 useful. Local people can grow vegetables and fruits here now, and their life is getting better and better.
1.get意为“变得”，系动词+形容词
2.比较级+and+比较级 “越来越...
【注意】越来越有趣 more and more interesting
【区分】the+比较级..., the+比较级... “越...，就越....
Activity 7: Learn some language points in 2c.
3.by hand用手
2.begin doing sth.=begin to do stn.开始做某事
3.with the government’s support 在政府的支持下
=with the support of the government
with the help of... 在...的帮助下 with the development of society随着社会的发展
定语从句
现在进行时的标志词
现在完成时的标志词
there be句型（就近原则）

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