1、Unit 1 Nature in the balance Reading(I)Have you ever watched a documentary before?Lead inGuess:where is it?The Amazon rainforest:a natural treasure Pre-readingWhat will be talked about in the text according to the title and the picture?the Amazon rainforest What could be the genre（体裁）of the article?
2、documentary script(原稿）Predict：Para.1:Introduction to the Amazon rainforestPara.2:Basic information about the rainforestPara.3:_Para.4:_Para.5:_Plant biodiversity;levels of the rainforestAnimal biodiversity;food chainThe rainforests value to the human race;threats to the rainforestComplete part A1 on
3、 page 4 with the main idea of each paragraph.Step1Analysing the structure While-reading Analysing the structurePlant biodiversityDifferent levelsAnimal biodiversityFood chainValueThreat Step2 Detailed readingAs the largest rainforest in the world,it plays a significant role in maintaining the fine b
4、alance of the Earths ecosystem.Read Para.1 and answer What is the topic sentence.Read Para.2 and.What is the purpose of using so many figures?Besides just listing the figures,how does the script make the figures,the large figures in particular,understandable?To support the statement and make the sta
5、tement more persuasive and convincing;to vivify the figures and the facts;By making comparisons with figures.Read Para.3 and complete the mind map about different levels of the rainforest.a system of rootsthe mass of leaf littershorter plants with large leavesRead Para.4 again and finish the food ch
6、ain.01020304051._2._3._4._5._Jaguarsfrogs and other speciesinsectsleaves and fruitmicro-organismsCircular循环的Read Para.5 and answer two questions.Q1:How does the Amazon rainforest breathe life into the planet?Q2:Why has 17 per cent of the rainforest disappeared over the past 50 years?Due to human act
7、ivities such as agriculture and cattle farming.By fixing carbon and producing over 20 per cent of all the Earths oxygen.DiscussionsDiscussionsWhat makes the Amazon rainforest a natural treasure according to the script？The Amazon rainforest is unique,beautiful and valuable.It contains almost 10%of al
8、l known species on the Earth.It produces over 20%of the planets oxygen.Its wonderful plant and animal species have enable humans to make amazing discoveries.Post-readingDiscussionsDiscussionsWhat is your answer to the question at the end of the script?No.The Amazon rainforest is far too important fo
9、r us to allow it to be destroyed.It helps maintain the balance of the ecosystem and provides the essential object for us to live.DiscussionsDiscussionsWhats the purpose of this passage?l To introduce the basic information of the rainforest.l To appeal to people to protect the natural treasure the Am
10、azon rainforest.What can we do to help maintain a delicate ecological balance?Deep thinkingReduce,reuse,and recycle.Follow the 3Rs to conserve natural resources and landfill space.Plant a tree.Trees provide food and oxygen.They help save energy,clean the air,and help combat climate change.Adopt gree
11、n transportation,eg.bike more,drive less.Shop wisely.Buy less plastic and bring a reusable shopping bag.Use long-lasting light bulbs.Energy efficient light bulbs reduce greenhouse gas emissions.Also flip the light switch off when you leave the room.The Amazon rainforestAs the largest rainforest in t
12、he world,it plays a _ role in maintaining the fine balance of the Earths ecosystem.Basic information about the rainforestPlantsBirds and mammals It crosses into _ and one overseas region of France.It covers around _ square kilometres.It gets its namefrom the AmazonRiver,which is about_ inlength.It h
13、as the richest _ on the Earth.There are more than _ plant species,including _ and_.There are more than_ species of birds and over _ species of mammals such as the jaguar.The jaguar is only one _ of the food chain.Values:*It fixes carbon and produces over _of all the Earths oxygen.*It is a treasure h
14、ouse of species that can be used for food or medicine.Threats:About _ of the rainforest has lost over the past 50 years due to human activities.Value and threatssignificanteight countries6 million6,400 kilometresbiodiversity40,000ancient brazil nut treewater lilies 1,300400element20%17%1.Exercises B1&B2,Page 5;2.Introduce places in China with rich biodiversity like the Amazon rainforest.
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