Unit1NatureinthebalanceReading知识点课件- 高中英语牛津译林版(2020)必修第三册.pptx

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1、 Language pointsThe world we live in is full of natural wonders.The documentary script below describes the Amazon rainforest,which is home to a wide range of wildlife.be home to.是是.的家园的家园a wide range of.广泛的广泛的Paragraph 1(1)Welcome to the jungle,a huge sea of green alive with the sounds of animals.(p

2、age 2,line 1)欢迎来到丛林,这是一片绿色的海洋,处处都可以听到各种动物的声音。欢迎来到丛林,这是一片绿色的海洋,处处都可以听到各种动物的声音。a huge sea of:大量的,许多大量的,许多be alive with:充满着,充满着,到处都是到处都是We must face a huge sea of troubles and bear them.No wonder people say Austria is always alive with the sound of music.我们必须面对大量的困难并忍受它们。难怪人们说奥地利永远充满音乐之声。(2)As the larg

3、est rainforest in the world,it plays a significant role in maintaining the fine balance of the Earths ecosystem.(page 2,lines 23)The foods you consume every day play a significant role in your health.play a significant role in.在在.方面起着重要的作用方面起着重要的作用 作为世界上最大的雨林,它在维系地球生态系统的良好平衡上扮演着重要的角色。作为世界上最大的雨林,它在维系

4、地球生态系统的良好平衡上扮演着重要的角色。你每天消耗的食物在你的健康方面起着重要的作用。Paragraph 2The Amazon rainforest crosses into eight countries,including Brazil and Peru,and one overseas region of France,all on the South American continent.With an area of around 6 million square kilometers,the Amazon rainforest is more than half the siz

5、e of China.(page 2,lines 47)亚马孙雨林穿过包括巴西、秘鲁在内的八个国家,以及一块法国的海外领地,都位于南亚马孙雨林穿过包括巴西、秘鲁在内的八个国家,以及一块法国的海外领地,都位于南美洲大陆。亚马孙雨林的面积约为美洲大陆。亚马孙雨林的面积约为600600万平方千米,比中国国土面积的一半还要大。万平方千米,比中国国土面积的一半还要大。cross into 穿过,横穿穿过,横穿 1.Prep.+relative pronouns(which/whom)The woman_ _ you spoke is a teacher.The city_ _he lives is fa

6、r away.(2)The Amazon River,from which the rainforest gets its name,is close to 6,400 kilometres in lengthroughly 100 kilometres longer than the Yangtze River.(page 2,lines 79)亚马孙雨林得名于亚马孙河亚马孙雨林得名于亚马孙河,亚马孙河长约亚马孙河长约6,400千米千米,比长江还长大约比长江还长大约100千米。千米。to whomin which2.be close to (时间(时间/空间空间)接近接近,几乎几乎3.in

7、length 在长度上在长度上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 longer than the Yangtze River.Find the comparisons in the

8、documentary script.倍数的表达方式:倍数的表达方式:倍数倍数+the height/weight/length/size of 倍数倍数+as+adj/adv(long/high/large)+as 倍数倍数+adj/adv的的比较级比较级 than A +谓语动词谓语动词 +B地球是月球的地球是月球的4949倍。倍。The earth is 49 times the size of the moon.The earth is 49 times as large as the moon.The earth is 48 times larger than the moon.(3

9、)On its journey from the mountains to the ocean,the river supports many different ecosystems.They give this area the richest biodiversity on the Earth:one in ten known species in the world can be found here.这这条条河河从从高高山山到到海海洋洋的的沿沿途途中中,它它维维系系着着多多种种不不同同的的生生态态系系统统。它它赋赋予予这这片片区区域域地地球球上最丰富的的生物多样性:上最丰富的的生物多

10、样性:全世界十分之一的已知物种,都可以在这里找到。全世界十分之一的已知物种,都可以在这里找到。one in ten/one out of ten十分之一十分之一 Paragraph 3(1)Of the 390,000 plant species known to us,more than 40,000 can be found in the Amazon.This tall and ancient brazil nut tree produces nuts that we can eat;these water lilies are big enough to lie down on.The

11、 forests different levels support an unbelievable variety of wildlife.(page 3,lines 1315)在我们已知的在我们已知的3939万植物种类中,万植物种类中,4 4万多种可以在亚马孙找到。万多种可以在亚马孙找到。这棵高大、古老的巴这棵高大、古老的巴西坚果树结出我们可以食用的坚果;这些睡莲(叶片)大到可以躺在上面。西坚果树结出我们可以食用的坚果;这些睡莲(叶片)大到可以躺在上面。雨林的雨林的不同层次养活的野生动物种类多到难以置信。不同层次养活的野生动物种类多到难以置信。1.be adj./adv.enough to

12、do 足够足够.去做去做.He is old enough to go to school.他足够大去上学了。他足够大去上学了。2.a variety of 各种各样的各种各样的The school provides students with a variety of facilities.这个学校给学生提供各种各样的设施。这个学校给学生提供各种各样的设施。(2)At the bottom,there is a system of roots beneath the ground.Above that is the mass of leaf litter on the dark forest

13、 floor.The next level is made up of shorter plants with large leaves.Then there are the towering ancient hardwoods,and finally the tops of the tallest trees many meters above the ground.Each level of the forest forms its own little world,home to different kinds of living things.在底层是地下根系,往上是阴暗森林地表厚实的

14、落叶层。再往上一层由较矮的阔叶在底层是地下根系,往上是阴暗森林地表厚实的落叶层。再往上一层由较矮的阔叶植物组成。然后是高耸、古老的阔叶树,最后是那些离地数米之高的大树的树冠。植物组成。然后是高耸、古老的阔叶树,最后是那些离地数米之高的大树的树冠。雨林的每一层都形成自己的小世界,成为各种生物的家。雨林的每一层都形成自己的小世界,成为各种生物的家。3.which is home to different kinds of living things.1.Above that位于句首,句子要完全倒装位于句首,句子要完全倒装(谓语应与其后面的主语保持一致谓语应与其后面的主语保持一致)2.be made

15、 up of 由由.组成组成他的朋友杰克就在这些人中。他的朋友杰克就在这些人中。Among these people was his friend Jack.Paragraph 41.More than 1,300 speices of birds and over 400 species of mammals hide among the jungles plant life.This jaguar is one example.It has a yellowish-brown coat with black spots.While a significant number of jagua

16、rs survive here,there are only one element of this forests food chain.1,3001,300多种鸟和多种鸟和400400多种哺乳动物藏身于这片丛林的植被中。多种哺乳动物藏身于这片丛林的植被中。美洲豹就是个例子。它美洲豹就是个例子。它黄棕色的皮毛上遍布着黑点。黄棕色的皮毛上遍布着黑点。尽管相当多的美洲豹生存在这里,但它们仅仅是雨林食尽管相当多的美洲豹生存在这里,但它们仅仅是雨林食物链上的一环。物链上的一环。2.a significant number of.大量的大量的 the number of.的数量的数量1.while 引

17、导时间状语从句,引导时间状语从句,“尽管尽管.”3.food chain 食物链食物链They feed on at least 87 species,including frogs.These frogs,in turn,feed on insects which eat leaves and fruit.When a jaguar dies,a tiny army of microorganisms helps break down its body and return the nutrients to the earth.它们捕食的物种至少有它们捕食的物种至少有8787种,其中包括青蛙

18、。相应地,这些青蛙以昆虫为食,这些昆虫种,其中包括青蛙。相应地,这些青蛙以昆虫为食,这些昆虫吃树叶和水果。当一只美洲豹死后,一小群微生物会帮助分解尸体,让营养素重回土壤吃树叶和水果。当一只美洲豹死后,一小群微生物会帮助分解尸体,让营养素重回土壤中。中。3.an tiny army of 一小群一小群An army of ants matched across the path.一大群蚂蚁浩浩荡荡地穿过小路。一大群蚂蚁浩浩荡荡地穿过小路。1.feed on.以以.为食为食2.in turn 相应地相应地4.break down 分解分解Paragraph 5The Amazon rainfore

19、st breathes life into the planet by fixing carbon and producing over 20 percent of all the Earths oxygen.Thus,it is often known as the“lung of the planet”.Moreover,the Amazon rainforest is a treasure house of species that can be used for food or medicine.Yet there is one major danger to these irrepl

20、aceable plants and animals:us.亚亚马马孙孙雨雨林林通通过过固固定定碳碳,以以及及生生成成占占全全球球总总量量20%20%以以上上的的氧氧气气来来为为地地球球注注入入活活力力。因因此此,它它也也常常常常被被称称作作为为“地地球球之之肺肺”。此此外外,亚亚马马孙孙雨雨林林还还是是可可以以用用作作食食物物和和药药物物材材料料的的物物种种宝库宝库。然而,这些无可取代的动植物面临的一个主要威胁就是:我们。然而,这些无可取代的动植物面临的一个主要威胁就是:我们。1.breathe life into 给给.带来起色,注入活力带来起色,注入活力2.be known as.被称为

21、被称为.,被认为是,被认为是.be known for.因因.而闻名而闻名3.be used for 被用来做某事被用来做某事 be used as 被用作被用作.Over the past 50 years,about 17%of the rainforest has disappeared due to human activities such as agriculture and cattle farming.As the impact of human activities continues to grow and the list of species in danger of

22、extinction becomes longer,we are left with a question:can we afford to damage the“lungs of the planet”?在过去的在过去的5050年里,由于农耕和养牛等人类活动,年里,由于农耕和养牛等人类活动,17%17%的雨林已经消失。的雨林已经消失。随着人类活随着人类活动影响的不断增加,濒危物种的名单越来越长,这留给我们一个问题:我们能承担动影响的不断增加,濒危物种的名单越来越长,这留给我们一个问题:我们能承担得起损害得起损害“地球之肺地球之肺”的后果吗?的后果吗?1.due to 由于,因为由于,因为2.

23、in danger of extinction 处在灭绝的危险中处在灭绝的危险中3.afford to do sth 负担得起做某事负担得起做某事Build your languageThe Amazon rainforest 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

24、report listing the nutrients of that soil,he or she will probably think that only desert plants can(3)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

25、 takes away the nutrients in the soil.For another thing,B1 varietyagriculturesurviveimpact(5)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)_ allowing them to grow at an unbelievable speed.due toare broken downbeneaththus

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