内容正文:
Unit 1 Nature in the balance
Reading 1
The Amazon rainforest: a natural treasure
Let us not, however, flatter ourselves overmuch on account of our human victories over nature. For each such victory nature takes its revenge on us.
———Friedrich Engels
但是我们不要过分陶醉于人类对自然界的胜利。对于每一次这样的胜利,自然都会对我们进行报复。
———弗里德里希·恩格斯
Pre-reading
What plants or animals do you know about? What is special about them?
What plants do you know about?
What is special about them?
Pre-reading
Watch a video
Judging from the title and pictures, What do you think this script is about?
Pre-reading—explore the title &pictures
the Amazon jungle and the plants and animals found there. —— natural treasures because they are valuable to the Amazon.
The plants and animals living in the Amazon rainforest are unusual and beautiful. A wide variety of animals depend on the rainforest for shelter and food.
Skim and grasp the main idea
Amazon rainforst
Para. 2
Basic information about the rainforest
Para. 3
Plant biodiversity; levels of the rainforest
Para. 1
Introduction to the Amazon rainforest
Para. 5
Animal biodiversity; food chain
Para. 4
Animal biodiversity; food chain
A1
Detailed reading
Paragraph 1
Question:What is the topic sentence?
As the largest rainforest in the world, it plays a significant role in maintaining the fine balance of the Earth’s ecosystem.
02
01
03
04
06
05
07
08
____countries and one overseas region
Around ______ km2 of forest
About ______km in length
more than _____ plant species
More than _______ bird species
Over ______species of mammals
Over _____of all the Earth’s oxygen produced
About _____ the rainforest lost over the past 50 years
8
6 million
6,400
40,000
1,300
400
20%
17%
Work out figures
Read Paragraph 3 and complete the mind map about different levels of the rainforest.
Detailed reading
The forest’s different levels
the ma