Unit 1 Reading 1 The Amazon rainforest：a natural treasure ppt课件-（2020）新牛津译林版高中英语高一必修第三册.pptx

1、Unit 1 Nature in the balanceReading 1The Amazon rainforest: a natural treasure1. What animals do you know about? What is special about them?Pre-reading2. What plants do you know about? What is special about them?Pre-reading3. Have you ever watched a documentary before? Yes. (1)The documentary is abo

2、ut_. W h a t i m p r e s s e s y o u m o s t a b o u t t h e documentary_. (2)Language employed in a documentary is_.No, I didnt because_. Pre-readingThe Amazon rainforest:a natural treasureJudging from the title and the illustrations, What do you think this script is about?Pre-readingexplore the ti

3、tleWhile readingexplore the main idea by skimmingAmazon rainforstPara. 2Basic information about the rainforestPara. 3Plant biodiversity; levels of the rainforestPara. 1Introduction to the Amazon rainforestPara. 5Animal biodiversity; food chainPara. 4Animal biodiversity; food chainA1A2Read the docume

4、ntary script again carefully and fill in the blanks with the figures. While readingexplore the details by scanningA2Read the documentary script again carefully and fill in the blanks with the figures. While readingexplore the details by scanningSample answers:(1) 8 (3) 6,400 (5) 1,300 (7) 20% (2) 6

5、million (4) 40,000 (6) 400 (8) 17%Read Paragraph 3 and complete the mind map about different levels of the rainforest.While readingexplore for the more details (4)(3)(2)(1)a system of roots beneath the groundThe forests different levelsthe mass of leaf littershorter plants with large leavestowering

6、ancient hardwoodsthe tops of the tallest treesRead Paragraph 4 and complete the following chart about the food chain in the rainforest.While readingnutrients in the earthinsects(4)leaves and fruits(1)(2)(3)frogsjaguarsmicroorganismsThe forests food chainWhile readingexplore for the more details Whil

7、e readingBasic 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 forests (6) _ Plantsmore than 40,000 (3) _different (4) _ of the forest Significancefix carbon and produci

8、ng (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 beingsagricultureWhile readingRetell the storySummarize the script

9、 based on the chart above. While readingA31. What makes the Amazon rainforest a natural treasure according to the script? unique beautiful valuableIt contains 10% of all known species on the Earth.It produces over 20% of the planets oxygen. Its wonderful plant and animal species have enabled humans

10、to make amazing discoveries.While readingA32. What is your answer to the question at the end of the script? Support your opinion with information from the script or other sources. No. too importantmaintain the balance of the ecosystem provides our society with food and medicineWhile readingIn the se

11、ntence “Yet there is one major danger to these irreplaceable plants and animals: us.” (Page 3, Lines 3334) , why “us” is used instead of “human beings” here? emphasize the responsibility dutyHow does the documentary script make clear the size of the Amazon rainforest and the length of the Amazon Riv

12、er?B3Appreciationexplore the writing styleSentences using comparison:With an area of around 6 million square kilometres, the Amazon rainforest is more than half the size of China.The Amazon River, from which the rainforest gets its name, is close to 6,400 kilometres in lengthroughly 100 kilometres l

13、onger than the Yangtze River.” B3Appreciationexplore the writing styleHere are some expressions used to make comparisons: the same size/length as as large/long as more than/larger than/longer than twice/three times as large/long as making comparisons with familiar places or objects： gain a better un

14、derstanding. large numberB3 1. It was reported that in 2011, about 34 million people lived in the Amazon. (population of Canada: 37 million; population of Shanghai: 24 million)ConsolidationIt was reported that in 2011, about 34 million people lived in the Amazonthat is about Canadas total population

15、.It was reported that in 2011, about 34 million people lived in the Amazonthat is 10 million more than the population of Shanghai.B3Consolidation2. From 2001 to 2012, about 177,000 square kilometres of the Amazon rainforest were lost. (size of New Zealand: 268,000 km2; size of Jiangsu: 107,200 km2)F

16、rom 2001 to 2012, about 177,000 square kilometres of the Amazon rainforest were lostthat is more than half the size of New Zealand.From 2001 to 2012, about 177,000 square kilometres of the Amazon rainforest were lostthat is about twice the size of Jiangsu.What other writing techniques are employed i

17、n the script? Find examples from the script. AppreciationExplore for Writing style citing examples, listing numbers and giving definitions. For example：“More than 1,300 species of birds and over 400 species of mammals hide among the jungles plant life. This jaguar is one example” “Moreover, the Amaz

18、on rainforest is a treasure house of species that can be used for food and medicine.”What is the function of those writing techniques? To make the information conveyed more precise and accurate.What is the type of the script? Exposition(explaining or providing readers with information) AppreciationE

19、xplore for Writing stylePost-readingA3Are there any places in China with rich biodiversity like the Amazon rainforest? What are they? Introduce one to the class.The _ is a natural property . The_ is of outstanding value for its diversity of landscapes and rich biodiversity. In _, there are over _ pl

20、ant species, around _ mammal species and more than _ bird species. A large number of rare animals such as _can be found.1. What is the Ant Forest Programme?Post-readingThe Ant Forest Programme is an innovative approach coming from a mobile Internet financial service company of China. It aims to comb

21、ine the Internet, finance and a low-carbon lifestyle to turn virtual trees that users grow on the online platform into real ones. This move contributes to the growth of the number of trees in China, as well as to protecting the environment.2. How does the Ant Forest Programme work?Post-readingLow-ca

22、rbon activities can be counted and converted into virtual “green energy”. Virtual “green energy” generated by such activities are saved in the users “Ant Forest” account. A virtual tree will be converted into a real tree, planted by the staff.3. Do you support the Ant Forest Programme and why?Post-r

23、eadingCritical thinkingYes.Firstly, an environment-friendly lifestyle. Secondly, fun.Thirdly, I think it enables us to have a better understanding of environmental protection and makes our contributions mean something, no matter how small they are.No, because_.B1Language practiceThe Amazon rainfores

24、t is home to a great (1) of plant life; however, its soil is surprisingly poor in nutrients. In fact, the soil in the region cannot support (2) for more than a few years. If a scientist is shown a report listing the nutrients of that soil, he or she will probably think that only desert plants can (3

25、) in it! Then why is the soil so poor in nutrients? For one thing, the rainy season has a(n) (4) on the soil. In the rainy season, the water level can rise to as high as 12 metres. When the water goes away, it takes away the nutrients in the soil. For another thing, varietyagriculturesurviveimpact(5

26、) the Amazons hot climate, it is difficult for the soil to build up enough nutrients. Dead plants and animals (6) more quickly. The nutrients are soon taken in by the roots of the plants deep (7) the ground. As a result, most of the forests nutrients are locked up in the plants themselves, (8) allow

27、ing them to grow at an unbelievable speed.due toare broken downbeneaththusLanguage practiceWords formed with negative prefixesB2PrefixesWordsun-dis-in-/im-/il-/irnon-unbelievable, unlimited, unhappy, unknown, unusual, unreal, unfortunate, unlucky, unkinddisappear, disagree, disadvantage, dissatisfie

28、d, dishonest, disabledirreplaceable, invisible, incorrect, inactive, independent, impolite, imbalance, illegal, irregular, irresponsiblenon-smoking, non-stop, non-existent, non-profit, non-fictionLanguage ruleHomework1. Write a summary of the script based on the chart discussed in class.2. Find more examples of the writing techniques of expositions in the script to better understand the genre.3. Finish the workbook.