Unit 1 Nature in the Banlance Reading（ppt课件）-2023新牛津译林版（2020）《高中英语》必修第三册.pptx

1、B3U1 Nature in the balanceReadingThe Amazon rainforest:a natural treasure教学目标教学目标学生在学习完本课后，应该能够：（1）获取、梳理亚马孙雨林的基本信息；（2）分析文章的结构，归纳段落大意；（3）把握说明文写作特点以及常见的说明方法；（4）阐释亚马孙雨林被称之为“天然宝藏”的原因；（5）评估保护亚马孙雨林的重要性，用所学语言理性表达自己的观点和态度。Watch&answer:What is the video about?Watch&answerWhat is the video about?The Amazon Ra

2、inforestthe Amazon riverthe largest rainforesttowering treesa variety of wildlifePre-reading What kind of text is it?Documentary scriptA written version of documentaryFast-reading:skimmingRead the documentary script and write the main idea of each paragraph.Plant biodiversity;levels of the rainfores

3、t Animal biodiversity;food chainThe rainforests value to the human race;threats to the rainforest.Fast-reading:scanningPlease read this script again and fill in the blanks below.2.Whats the function of statistics in documentary scripts?Numbers./Statistics.Statistics can make the facts more convincin

4、g,impressive and persuasive.1.What are they?Careful-reading(Para.1)diverseadj.diversity n.Why is the Amazon rainforest called a natural treasure?Because of its biodiversity.Because it is important to our environmental balance.living thingsRead para.2 carefully and fill in the blanks below.locationsi

5、zeorigin 8 countries and one overseas regionaround 6 million square kilometres of forestthe Amazon River,about 6,400 km in lengthIt has the richest biodiversity on the Earth.Careful-reading(Para.2)Careful-reading(Para.3)Fill in the mindmap about forests different levels.the tops of the tallest trees

6、towering ancient hardwoodsshorter plants with large leavesthe mass of leaf littera system of rootsCareful-reading(Para.4)Complete the following chart about the food chain in the rainforest.Jaguarsinsectsat least 87 species,including frogsmicroorganisms Careful-reading(Para.5)Read para 5 carefully an

7、d fill in the blanks below.What is the forests current danger?Yet there is one major danger to these irreplaceable plants and animals:us.Over the past 50 years,about 17%of the rainforest has disappeared due to human activities,such as agriculture and cattle farming.SummaryAs the largest forest in th

8、e world,the Amazon rainforest has a crucial influence on the Earths eco-balance.The rainforest crosses into eight countries and .Its name originates from the Amazon River,which is about 6,400 kilometers in length.There are more than 40,000 plant species in the Amazon rainforest.and forms its little

9、world in each level.All these species are the elements of this forests food chain.covers an area of Various wildlife exists in the different levels of the forestMore than 1,300 species of birds and over 400 around 6 million square kilometers in Southern America species of mammals can be found hereSu

10、mmaryKnown as the“lungs of the planet”,the Amazon rainforest breathes life into the planet by fixing carbon and producing oxygen.And .However,the forest faces a major danger.there areHuman activities do damage to the rainfore greatly.many species that can be used for food or medicinePost-readingPost

11、-readingThe Amazon Rainforest Fires leaves a destructive influence on the ecosystem in the world.Applying(Group Work)To raise the awareness of protecting the Amazon rainforest,you are invited to make a speech in the United Nations.Please work with your group members and write the speech together.Use

12、ful expressions:1.It is my great honor to have a chance to make a speech here.2.It plays a significant in(doing)sth.3.be of significance to.3.be home to.4.It is time for sb.to do sth.5.make efforts to do sth.Show TimeApplying(Group Work)Possible version Ladies and gentlemen,It is my great honor to h

13、ave a chance to make a speech here.Today,I want to talk about our shared home the Amazon rainforest.Recently,a raging fire broke out in the Amazon rainforest and lasted for 21 days,which leaves results that we cant afford.Actually,the Amazon rainforest has a crucial influence on the Earths eco-balan

14、ce and peoples lives.First of all,it is home to a variety of wildlife.More than 40,000 plant species lived in this fantastic forest.More than 1,300 species of birds and over 400 species of mammals can be found here.Whats more,known as the“lungs of the planet”,it contributes almost 20 percent of the earths oxygen and has a significant effect on the worlds climate.As a citizen in the earth,we couldnt live a better life without the Amazon rainforest.Its time for us to make joint efforts to protect it.Homework1.preview the handout on language points Thanks for your time.