Unit+1+Nature+in+the+balance+复习课件 高中英语牛津译林版（2020）必修第三册.pptx

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1、REVIEWBook3 Unit1Nature in the balance02010304Learning objects：Understand and use learned vocabulary extensively Make use of context to predict and comprehendPromote presentation and writing skillsEnhance environmental awareness and social responsibilitySTEP1 Word guessinghabitat:a place where anima

2、ls live.HUMAN ACTIVITYwater/air pollutionwasteforest firescarbon footprintcarbon emissionsgreenhouse gas emissionsENVIRONMENTAL ISSUESgreenhouse effectresource depletionbiodiversity lossecosystem unbalancehabitat destructiondeforestationHuman activityclimate changeglobal warmingEnvironmental issuesW

3、hich word comes to your mind when you see these pictures?STEP2 Phrases reviewing Last Saturday,Our teacher _(give)us a lecture about the Amazon Rainforest.Through it we know that the Amazon rainforest is one of the most biodiverse _(region)on Earth due to its complex ecosystems,huge mix of species a

4、nd genetic variety.regionsgaven.不同种类;变化;多样性;变种,变体vary vi.(根据情况)变化;改变 various adj.各种不同的,各种各样的 vary from.to.在到之间变化从到不等 vary with/by.随而变化(1)In our daily life，we will come across (vary)difficulties，but we should try to break them down.(2)As in China，the climate in Canada varies the area.(3)我有许多爱好，从打篮球到弹

5、钢琴不等。(话题写作之个人生活)I have a number of hobbies，_ .(非谓语动词)I have a number of hobbies，_ .(定语从句)variouswith/byvarying from playing basketball to playing the pianowhich vary from playing basketball toplaying the piano The Amazon rainforest breathes life into the planet by fixing carbon _ producing mass oxyg

6、en.However,as the impact of human activities continues to grow,it is getting _(smaller)and couldt absorb greenhouse gas,_ may consequently cause global warming and make it harder for creatures to survive.vi.&vt.生存;挺过(难关);幸免;幸存;活下来;生还;比活得长(survivor n.幸存者 survival n.幸存;生还)survive sth 幸免于；从中活过来 survive

7、 on靠存活下来andsmallerwhich(1)Baptiste Dubanchet is biking across Europe，surviving entirely _discarded(丢弃的)food.(2)It is necessary that we master some basic skills，which will greatly increase our chances of .Luckily，I the terrible car crash last week and I was the only of the accident.(survive)(3)生活不在于如

8、何从暴风雨中幸存，而在于学会在雨中翩翩起舞。(读后续写之升华句)Life isnt about while its about learning to dance in the rain.on survivalsurvivedsurvivorhow to survive the storm Experts around the world come up _ creative ideas on how to solve these problems.Some call for the _(establish)of natural reserves in defence of the Amazo

9、n rainforest,and others appeal to the application of modern technology.withestablishmentn.辩护；防御；防御物；保护；国防；防守(defend vt.防御；保护，保卫；辩白；辩护 defensive adj.防御性的；自我保护的)in defence of保卫;为做解释或辩护defend sb/sth from/against sb/(doing)sth 保护某人/物免受伤害;保卫某人/物(1)Local government set up some natural reserves_defence of

10、animals close to extinction.(2)Body language can give away a lot about your mood,so standing with your arms folded can send out a signal that you are being_(defend)(3)我和妻子用胡椒喷雾(pepper spray)保护我们自己不受北极熊的攻击。My wife and I used pepper spray _ by the polar bear.in defensiveto defend ourselves from/agains

11、t being attacked Last Saturday,Our teacher gave us a lecture about the Amazon Rainforest.Through it we know that the Amazon rainforest is one of the most biodiverse regions on Earth due to its complex ecosystems,huge mix of species and genetic variety.The Amazon rainforest breathes life into the pla

12、net by fixing carbon and producing mass oxygen.However,as the impact of human activities continues to grow,it is getting smaller and couldt absorb greenhouse gas,which may consequently cause global warming and make it harder for creatures to survive.Experts around the world come up with creative ide

13、as on how to solve these problems.Some call for the establishment of natural reserves in defence of the Amazon rainforest,and others appeal to the application of modern technology.STEP3 Sentences translating1.1.由于温室气体排放量的增加，大气变得越来越暖。由于温室气体排放量的增加，大气变得越来越暖。(consequence)(consequence)_ _The atmosphere i

14、s becoming warmer and warmer as a consequence of the increasing emission of greenhouse gases.2.2.是时候采取各种方法来保护地球免受污染了。是时候采取各种方法来保护地球免受污染了。(various)(various)_It is time that we should take various methods to protect the earth from pollution.3.3.请请牢牢记记重重建建我我们们绿绿色色、清清洁洁的的地地球球需需要要我我们们每每个个人人的的努努力力和和贡贡献献。(

15、call for)(call for)_Keep in mind that rebuilding our green and clean earth calls for everyones efforts and contributions.STEP4 Reading ComprehensionJapan releases Fukushima water to the PacificJapan releases Fukushima water to the Pacific Japan is planning on releasing over 1 million metric tons of

16、radioactive water into the pacific ocean.As you can imagine,this is concerning because while most of dangerous elements of the radioactive water can be removed,there is no technology that removes radioactive tritium and releasing it into the water could have an unpredictable impact on marine life as

17、 it moves its way down the food chain and back into humans.Countries like South Korea have even banned seafood from waters near Fukushima until the water is tested,which is hurting the livelihood of many Japanese fihermen who have vocally opposed the plan.Japan and the International Atomic Energy sa

18、y that the contaminated water will be highly diluted and released slowly over dacades.So the tritium levels would meet environmental safety regulations.But experts cant seem to decide how much of a risk this is.With the Canadian Nuclear Safety Commission stating that tritium itself is too weak to pe

19、netrate the skin,but can increase the risk of cancer if consumed in extremely large quantities.1.Which of the following statements is true？A.The highly diluted water does no harm to humans.B.It is difficult to remove most of dangerous elements of the radioactive water.C.The risks of nuclear wastewat

20、er discharge remain unclear.D.The Japanese people also support the decision of the Japanese government.2.Which of the following best explains“contaminated”underlined in Paragraph 4?A.polluted B.flowing C.clean D.diluted3.What is the authors attitude toward Japanese releasing radioactive water?A.dism

21、issive B.indifferent C.uneasy D.reserved STEP5 Writing应用文写作：假定你是李华，你校学生会准备开展“低碳生活，保护环境”主题活动，请你写一封倡议书号召全体师生积极参与，内容包括：1.保护环境的重要性2.如何低碳生活3.发出倡议可以适当增加细节，不少于80词。Dear teachers and schoolmates，A compaign aimed atwill be launched at/on/in，Im more than delighted to inviteto Environmental protection is closely connected to.For instance,we cant live withoutSo.Concerning how to live a low-carbon life,first of all,are expected to.Moreover,never.Last but not least,remember to It is high time that，Hope.Lets take action from now on!The Student Union Thank you