（2020）新牛津译林版高中英语高一必修第三册unit1Welcome to the unit&Reading ppt课件.rar

Unit 1 Nature in the balanceWelcome to the unit & Reading (I)Free talkLook and think Thinking:How can we protect our planet?Lead-inDo you know where is it? 亚亚马马孙孙热热带带雨雨林林（A Am ma az zo on n R Ra ai in n F Fo or re es st t）位位于于南南美美洲洲的的亚亚马马孙孙平平原原，占占地地5 55 50 0万万平平方方公公里里。雨雨林林横横越越了了8 8个个国国家家：巴巴西西（占占森森林林6 60 0%面面积积）、哥哥伦伦比比亚亚、秘秘鲁鲁、委委内内瑞瑞拉拉、厄厄瓜瓜多多尔尔、玻玻利利维维亚亚、圭圭亚亚那那、苏苏里里南南以以及及法法国国（法法属属圭圭亚亚那那），占占据据了了世世界界雨雨林林面面积积的的一一半半，占占全全球球森森林林面面积积的的2 20 0%，是是全全球球最最大大及及物物种种最最多多的的热热带带雨雨林林。亚亚马马孙孙雨雨林林被被人人们们称称为为“地地球球之之肺肺”和和“绿绿色色心心脏脏”，“世世界界动动植植物物王王国国”等。等。The Amazon rainforest: a natural treasure What will be talked about in the text according to the title and the picture? What could be the genre of the article? Prediction Read the para. 1. What aspects will be mentioned in the following paragraphs?1. Whats the main idea of the lassage?A. The Amazon rainforest is the largest rainforest in the world.B. The Amazon rainforest gives the richest biodiversity on the earth.C. The Amazon rainforest is a natural treasure house on the earth.D. The Amazon rainforest is known as the “lungs of te planet.” Reading2. Which of the following statement about Amazon rainforest is TRUE according to the passage?A. The Amazon rainforest plays an important part in keeping the balance of human and nature.B. The Amazon rainforest crosses into seven countries, including Brazil and Peru.C. The area of the Amazon rainforest is about 6 million squre meters, more than half size of Chian.D. The Amazon rainforest is named after the Amazon river, which is close to 6400 kilometers in length.3. Which can be infered from the third paragraph from the passage?A. There are only 390,000 species of plants on the earthB. Different species of plants in Amazon rainforest grow in different levelsC. At the bottom of the Amazon rainforest grow some bushesD. The ancient brazil nut trees and the water lilies are growing in the same level4. The author uses the example of “jaguars” in paragraph 4 .A. to prove that some rare animals are still found in the rainforestB. to show that they are only one element of the rainforest food chainC. to explain how the food chain is formedD. to warn readers to protect the animals from being damaged in the rainforest5. Whats the style of the passage?A. AdvertisementB. Travel journalC. Experiment reportD. Documentary scripComplete part A1 on page 4 with the main idea of each paragraph.Para. 1: Introduction to the Amazon rainforestPara. 2: Basic information about the rainforestPara. 3: _Para. 4: _Para. 5: _Analysing the structurePlant biodiversity; levels of the rainforestAnimal biodiversity; food chainThe rainforests value to the human race; threats to the rainforest Reading for specific information86 million6,40040,0001,30040020%17%Read para. 3 carefully and try to understand the rainforests different levels. Of the 390,000 plant species known to us, more than 40,000 can be found in the Amazon. This tall and ancient brazil nut tree produces nuts that we can eat; these water lilies are big enough to lie down on. The forests different levels support an unbelievable variety of wildlife. At the bottom, there is a system of roots beneath the ground. Above that is the mass of leaf litter on the dark forest floor. The next level is made up of shorter plants with large leaves. Then there are the towering ancient hardwoods, and finally the tops of the tallest trees many metres above the ground. Each level of the forest forms its own little world, home to different kinds of living things.a system of rootsThe forests different levels support an unbelievable variety of wildlife.the tops of the tallest treesthe mass of leaf littershorter plants with large leavestowering ancient hardwoodsRead para. 4 carefully and try to understand the food chain. More than 1,300 species of birds and over 400 species of mammals hide among the jungles plant life. This jaguar is one example. It has a yellowish-brown coat with black spots. While a significant number of jaguars survive here, they are only one element of this forests food chain. They feed on at least 87 species, including frogs. These frogs, in turn, feed on insects which eat leaves and fruit. When a jaguar dies, a tiny army of microorganisms helps break down its body and return the nutrients to the earth.JaguarsInsectsAt least 87 species, including frogsLeaves and fruitMicroorganismsfeed on break downfeed on feed on While a significant number of jaguars survive here, they are only one element of this forests food chain. What makes the Amazon rainforest a natural treasure according to the script? What is your answer to the question at the end of the script? Can we afford to damage the “lungs of the plant”? Discuss it with your partner.Discussion1. Read the documentary script again and underline the difficult points that you cannot understand.2. Are there any places in China with rich biodiversity like the Amazon rainforest? What are they? Go to the library or surf the Internet to collect some relevant information.Homework