Unit 1 Welcome to the unit and Reading ppt课件 --（2020版）新牛津译林版高中英语必修第三册.pptx

1、Unit 1 Nature in the balanceWelcome to the unit&Reading PresentationWhat can you see in these pictures?What can you see in these pictures?Let us not,however,flatter ourselves over much on account of our human victories over nature.For each such victory nature takes its revenge on us.Friedrich Engels

2、“但是我们不要过分陶醉于我们人类对自然界的胜利。对于每一次这样的胜利，自然界都对我们进行报复。”恩格斯Listen to a song!The earth is our only homeDiscussion 1.What is the message of the song?Humans have done much harm to the Earth,and we have to take action to change the situation.2.What can we do to help protect the environment?plant more trees use

3、less paper drive less and walk more use fewer plastic bottles and bags save water and cut down the use of electricity dont waste food dont use one-off things if possible,dont use air conditioners.The Amazon rainforest:a natural treasureThe Amazon rainforest:a natural treasureWhat will be talked abou

4、t in the text according to the title and the picture?What could be the genre（体裁）of the article?the Amazon rainforest documentary script(纪录片脚本）Para.1:Introduction to the Amazon rainforestPara.2:Basic information about the rainforestPara.3:_Para.4:_Para.5:_Analysing the structureRead the documentary s

5、cript and write the main idea of each paragraph(part A1).Plant biodiversity：levels of the rainforest（plants）Animal biodiversity：food chain（birds and animals）The rainforests value to the human race;threats to the rainforestPara.1:IntroductionThe status of The Amazon rainforset:_.the largest rainfores

6、t in the worldPara.2:Basic informationThe Amazon rainforest lies on_.It named after _.The Amazon rainforest and the Amazon River give the _on the earth.the South American continentThe Amazon Riverrichest biodiversitya system of rootsThe forests different levels support an unbelievable variety of wil

7、dlife.the tops of the tallest treesthe mass of leaf littershorter plants with large leavestowering ancient hardwoodsPara.3:PlantsThere are _ levels of plant species.5brazil nutwater lilyjaguarsinsectsat least 87 species,including frogsleaves and fruitmicroorganisms While a significant number of jagu

8、ars survive here,they are only one element of this forests food chain.nutrients Para.4:Food chain with the figures(part A2).Para.5:Significance and danger1.Why does the Amazon rainforest play a significant role in maintaining the balance of the Earths ecosystem?the“lungs of the planet”a treasure hou

9、se of species for food and medicine materials2.Whats the major danger in the Amazon rainforest?Whats the situation of the Amazon rainforest over the past 50 years?major danger:us/human beingsAbout 17%of the rainforest has disappeared due to human activities.2019年年8月月22日，据巴西国家空间日，据巴西国家空间研究所的卫星数据显示，亚马

10、孙研究所的卫星数据显示，亚马孙地区森林大火已持续燃烧了地区森林大火已持续燃烧了16天。天。截至截至8月月18日，日，2019年以来亚马孙年以来亚马孙森林火灾数量超过森林火灾数量超过7.2万起，较万起，较2018年同期增长了年同期增长了83%。由于开发不当和保护不利，巴西的亚马孙雨林正在由于开发不当和保护不利，巴西的亚马孙雨林正在遭到严重的破坏，热带雨林面积正以惊人的速度减遭到严重的破坏，热带雨林面积正以惊人的速度减少，森林覆盖率已从原来的少，森林覆盖率已从原来的80%减少到减少到58%，以致，以致动植物资源遭到破坏，造成水土流失、暴雨、旱灾、动植物资源遭到破坏，造成水土流失、暴雨、旱灾、土地荒

11、漠化等一系列环境问题。土地荒漠化等一系列环境问题。1.Can we afford to damage the“lungs of the planet”?Why?DiscussionNo.The Amazon rainforest is far too important for us to allow it to be destroyed.It helps maintain the balance of the ecosystem and provides our society with food and medicine.To support the statement and make the statement more persuasive and convincing;to make the factsvivid and specific by making comparisons with figures.2.What is the purpose of using so many figures?