外研版（2019）必修 第一册Unit 6 At one with nature Understanding ideas课件(共16张PPT)

(共16张PPT)
Unit 6
At one with nature
Understanding ideas
1. Summarize the main idea by finding key words or topic sentences.
2. Infer the main idea or the author's purpose in writing this passage.
3. Understand the importance of being in harmony with nature and raise awareness of environmental protection.
Learning objectives
the Longji Rice Terraces
What do you know about the Longji Rice Terraces
Pre-reading
Read the passage quickly and match each paragraph with its main idea.
Reading for the main idea
para1
para2
para3
para4
para5
the reason
the color
the history
the working principle
the value today
While-reading
the color
the history
the reason
working principle
工作原理
the value today
expositive(说明文)
the color
1. Imagine mountains wrapped in silver water,shining in the spring sun. Summer sees the mountains turn bright green with growing rice. During autumn, these same mountainsare gold, and in winter they are covered insheets of white frost. These are the colours of the Longji Rice Terraces.
personification
(拟人）
2. These terraces were built by the local Zhuang and Yao people, to whom Guangxi is home. Starting in the Yuan Dynasty, work on the terraces took hundreds of years, until completion in the early Qing Dynasty.Reaching as far as the eye can see, these terraces cover tall mountains, often from the bottom to the very top.
the building/ history
who
range
(范围）
Zhuang and Yao people
From Yuan Dynasty to Qing Dynasty
From the bottom to the very top
when
3. So why did these people go to so much trouble to turn the entire mountains into terraces Firstly, there are few large, flat areas of land in the region. Building the terraces therefore meant that they could increase the areas in which they could grow rice. Secondly, although the region has plenty of rain, the mountains are steep and the soil is shallow. The flat terraces catch the rainwater and prevent the soil from being washed away.
the reason
firstly
secondly
increase the areas to grow rice
catch rainwater and prevent the soil from being washed away.
4. But perhaps what is most significant is the way in which people have worked in harmony with nature to make these terraces and grow rice. The terraces are cleverly designed, with hundreds of waterways that connect with each other. During the rainy season, it is along thesewaterways that rainwater moves down the mountains and into the terraces. The sun heats the water and turns it into vapour. This forms clouds from which rain falls down onto the mountain terraces once again. These terraces also provide a perfect environment for birds and fish, some of which feed on insects that can harm the rice crops.
the working principle
A. The vapour forms clouds.
B. The sun heats the water.
C. The rain falls down onto the mountain terraces again.
D. Rainwater falls down the mountains and into the terraces.
E. The water turns into vapour.
F. The clouds form rain.
Put the steps into correct order
The working principle:
1
4
2
5
6
3
circulation
(循环）
the value today
Why do the local people still keep their traditional way of growing rice but not use modern technology to help produce more crops
Because knowledge is passed down through generations of families, and it suits the natural environment.
5. Although modern technology could help produce more crops, these terraces still mean a lot to the local people for whom traditions hold much value. This knowledge is passed down through families, which means that new generations continue to use ancient methods of agriculture to maintain the terraces. Today, the Longji Rice Terraces attract thousands of visitors who come to admire this great wonder created by people and nature working together.
Read through the passage quickly again and identify the author’s purpose in writing the passage.
1. To praise the wisdom of the ethnic groups living in Guangxi Zhuang Autonomous Region.
2. To explain how people worked in harmony with nature to create the Longji Rice Terraces.
3. To describe the beauty of the Longji Rice Terraces to attract visitors to this scenic spot.
Read for the writing purpose
The Longji Rice Terraces were built by the local Zhuang ethnic group alone. Though there are many large, flat areas in the region, they built terraces on the mountains to have more areas to grow rice. The terraces are cleverly designed, and can wash away the shallow soil. There are hundreds of waterways, along which rainwater moves down the mountains and into the terraces. Today, local people use modern methods to maintain the terraces, and they attract lots of visitors from all over the country.
Since
few
hold
ancient
Read the summary and correct four factual mistakes.
Zhuang and Yao people.
What measures should we take to protect the environment
Group work--Discussion
1.Don't cut down the trees freely.
2.Throw the rubbish into the dustbins.
3.Use clothing bags instead of plastic bags.
5.We can ride a bike instead of driving a car.
6.Don't throw anything into the rivers.
7.Protect the wild animals.
8....
We should/shouldn't...
Example:
A: Do you know about the global warming
B: Yeah, it's a very serious problem.
A: The earth is getting warmer every day.
B: We should take some measures to protect the environment.
A: Like what
B: We shouldn't cut down trees freely.
A: Yes, that's right. Trees are important to the creatures on the earth. What else
B：Let me think about it. We should take public transport instead of driving cars.
A: How about recycling Does that actually help
B: Of course. We should take your glass, paper, plastic and tin cans to the a recycling center.
A: Great idea! We should also....
Be at one with nature
P1. the color of terraces
P2. the building of terraces
P3. the reasons for building
P4. the working principle
P5. the value of terraces today
Longji Rice Terraces
What have you learnt
Summary
Write a short passage to call on people to protect the environment within 80 words.
1. the phenomenon of environmental pollution
2. measures to be taken to protect the environment
Homework