高中英语牛津译林版 (2020)必修 第三册Unit 1 Nature in the balanceReading背景图课件ppt

这是一份高中英语牛津译林版 (2020)必修 第三册Unit 1 Nature in the balanceReading背景图课件ppt
Unit 1 Reading The Amazon rainforest: a natural treasureWhat do you think the script will talk about according to the title and pictures?Predicting Pre-readingPara 1Para2Para3Para4Para5 Listen to the documentary script and write the main idea of each paragraph. Introduction to the Amazon rainforestBasic information about the rainforestPlant biodiversity：levels of the rainforest（plants）Animal biodiversity：food chain （birds and animals）The rainforest’s value to the human race; threats to the rainforestPassage Structure IntroductionBasic informationPlant biodiversityDifferent levelsAnimal biodiversityFood chainImportanceDangerA.B.C.D.√Step 2 Structure Fill in the blanks with the figures (part A2). 86 million6,40040,0001,30040020%17%010203What is the purpose of using so many figures?To provide specific and accurate information To support the statement and make the statement more persuasive and convincing;To make people realize the importance of the rainforest in a direct wayPara. 1 Read carefully and try to find the theme of this script. While readingIntroduction1. What’s the function of Paragraph 1?A. To emphasize the importance of the Amazon rainforest.B. To explain why the Amazon rainforest is a natural treasure.C. To state the status of the Amazon rainforest: the largest rainforest.D. To lead into the following paragraphs.Para. 1 Introduction√2.Which word can be used to replace the word “significant” in Para.1? A. Light. B. Small. C. Important. D. Middle.√The author writes about the ________ , the ______,the ____ and the ____________ of the Amazon rainforest.locationsizenamebiodiversityPara. 2 Basic information1. Fill in the blanks.Read Para. 3 Plant specieswater lilybrazil nut tree1. How does the author develop this paragraph?A. By listing numbers.B. By giving examples.C. By making comparisons.D. Both A & B.√Para. 3 Plant biodiversity; different levels Level 1: a system of roots(根系) beneath the ground Level 5: (4)Level 2:(1)Level 3:(2)Level 4:(3)2. Complete the mind map about different levels of the rainforest.Vertical纵向的the mass of leaf litter(落叶层)shorter plants with large leaves(低矮阔叶植物)towering ancient hardwoodsthe tops(树冠) of the tallest trees1. How does the author develop this paragraph?By giving examples.Para. 4 Animal biodiversity; Food chain 2. Complete the following chart about the food chain in the rainforest.JaguarsAt least 87 species, including frogsLeaves and fruitMicroorganismsfeed on break downfeed on feed on get nutrientsInsectsThe forest’s food chain①②③⑤④Circular循环的lungs of the planet1. What is the value of the rainforest to us?fix carbonproduce oxygena treasure house of speciesPara.5 Value；Threats2. What rhetorical device is used in this paragraph?A. Metaphor(隐喻)．B. Personification(拟人)．C. Parallelism(排比)．D. Simile(明喻).√3．What is the function of the question at the end of the passage?A. To introduce the topic.B. To introduce ways to protect the Amazon rainforest.C. To seek for answers to protect the Amazon rainforest.D. To arouse people’s concern about the Amazon rainforest.√Basic informationlocation and sizeName: getting its name from (1) ________________richest (2) ____________ Amazon rainforestAnimalsmore than 1,300 species of birds and over 400 species of (5) __________ elements of this forest’s (6) ___________ Plantsmore than 40,000 (3) ______________different (4) _____ of the forest Significancefix carbon and producing (7) ________ having species used for (8) __________________ Dangerthe major danger: (9) _________________ disappearing due to human activities such as (10) ____________ and cattle farmingthe Amazon riverbiodiversityplant specieslevelsmammalsfood chainoxygenfood or medicineus/human beingsagricultureStep 4 Mind map1. What type of writing is the passage?A. Narrative writing.（记叙）B. Exposition. （说明）C. Argumentation. （议论）说明文特征Use of literary resourcesOrganization of informationAccuracy of language√2. What is the purpose of this documentary script?A. To advertise the Amazon rainforest.B. To popularize(科普) the Amazon rainforest.C. To persuade readers to protect wildlife.D. To call for our joint efforts to protect the Amazon rainforest.√3. What is the author’s attitude towards the Amazon rainforest? A．Positive. B. Negative. C．Objective. D. Indifferent.√4. What skills does this documentary script use to make it clear and understandable?By presenting facts.By listing numbers.By making comparisons.By giving examples.By using metaphors.主题升华Let’s protect the rainforest, the ecosystem, and the earth!Live in harmony with the nature!Thank you!