+Unit+2+Topic+3+Section+C 仁爱版九年级英语上册.pptx

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1、Unit 2 Saving the EarthTopic 3 What can we do at home to protect the environment?Section C 1.Some words:technology,wheel,steel,require,German,guide,deep 2.Some phrases:run out 3.Some sentences:(1)In many countries,people produce power from coal,but it is very dirty and causes acid rain.(2)They will

2、never run out so they are called renewable sources.4.Talk about the advantages and disadvantages of some kinds of energy.Learning aims1.做一个环保使者2.应该做某事3.不应该做某事4.代替5.节省能量6.带一个布包7.关掉 停止工作8.毕竟9.说起来容易做起来难10.行动胜于言语11.喊着求助1.be a greener person2.ought to do sth.=should do sth.3.ought not to do sth.=shouldnt

3、 do sth.4.instead of(doing sth.)5.save energy6.take a cloth bag7.shut off=turn off8.after allRevision9.Easier said than done.10.Actions speak louder than done.11.cry for helpReading Practice1.According to the passage,which of the following is TRUE?_A.The maglev train was built in Shanghai.B.We can t

4、ake maglev train everywhere.C.Maglev trains cause no noise.D.Maglev trains only have advantages.2.From the passage,the writer wants to tell us _.A.the disadvantages of using coal B.we should use renewable energy to solve energy problemsC.every coin has two sides D.China is good at producing power3.T

5、he underlined phrase“run out”in paragraph 2 means _ in Chinese.A.用光 B.跑出去 C.生产 D.制作4.The renewable energy refers to_in the passage.A.Nuclear power B.Maglev train C.Electric vehicle D.Biogas5.If we put the passage into two parts,which of the following structure is the best?_A.Para.1 Para.2 B.Para.3 P

6、ara.4Para.1Para.2Para.3 Para.4C.Para.1 Para.2 Para.3 Para.4 CBADAparagraph 2 paragraph 3 Paragraph 4 1a.Look at the pictures.Do you know what they are?Choose the right picture for each paragraph.Learning1b.Read 1a and match the words with the pictures on Page 48.A.acid rain B.nuclear energy C.biogas

7、 ACB1c.Read 1a again and complete the table.ItemAdvantageDisadvantagebiogas electric vehicle maglev train renewablelong process and high costsave energy,no pollutiontoo small to hold many people quiet,quick,energy-efficient,no pollution much more expensiveKey points1.be the first/second/-+n.+to do s

8、th.是第一个做某事的.be the last +n.+to do sth.是最后一个做某事的.eg.China is the first country to realize 5G technology.2.use sth.to do sth.=use sth.for(doing)sth.使用某物做某事3.in+the+年份s/s 在几世纪几十年代eg.in the 1980s in the 2010s4.require v.需要，需求1)sth.+require+(doing)sth.“某事需要被做”主语是物，用动词ing形式表被动。e.g.The floor requires clean

9、ing.2)requre/need+sth./to do sth.“需要(做)某物”eg.I requre/need some water.3)require sb.to do sth.=ask sb.to do sth.要求某人做某事eg.My mother asks/requires me to buy some salt for her.Key points5.cost v.花费 (cost-cost-cost)sth.cost too much/too little.译为“花费多/少”。sth.cost sb.+钱 （做谓v.时，主语必须是物）eg.The gold watch cos

10、t Mrs.Zhou 30 thousand yuan.cost n.成本 用 high/low 来修饰。eg.The cost of the gold watch is too high.=The gold watch costs too much.6.up to 达到-7.not only.but also./neither.nor./either.or.在连接两个主语时，采用“就近原则”。eg.Neither I nor he is at school.Either he or you are in the dinning hall.Not only she but also I am

11、on the playground.both.and.连接主语时，用作复数。eg.Both I and he are at home.Key points8.hold v.容纳，抓住，举行 hold on,please.别挂断，请稍等。eg.1.Tiananmen Square can hold about one million people.2.Hold the baby a minute,please.3.They will hold a meeting to discuss the problem tomorrow.9.too+adj.+to do sth.太.而不能.（常与以下句型作

12、同义替换）not+adj.(用原句的反义词）+enough+to do sth.so+adj./adv.+that 从句 such+(a/an)+.+n.+that 从句eg.The dinning hall is so small that it cant hold fifty people.=This is such a small dinninng hall that it cant hold fifty people.=The dinning hall is too small to hold fifity people.=The dinning hall isnt big enoug

13、h to hold fifty people.10.It+takes+(sb.)+time +to do sth.人+spend+time +on sth./(in)doing sth.Key points.人+spend+money +on sth./(in)doing sth.人+pay +money +for sth.物+cost+(sb.)+money11.one of+可数名词复数 之一12.look for 寻找，强调动作 find 找到，强调结果 find out 发现，查明真相；着重表示通过理解、分析、思考、询问等“弄清 楚”“查明”一件事情，某个情况、事实 eg.we loo

14、ked for him everywhere，but didnt find him.Please find out when the train leaves13.a little,a bit,a lot,much,even,still,rather等修饰形容词时，形容词可用比较级.14.one(单数)/ones(复数)表同类异物。it/they 表同类同物。that(单数/不可数)/those(复数)那个/那些，表前面提到的事物，避免重复。Key pointseg.1.He has a nice coat and I have a nice one,too.2.My MP3 is old,b

15、ut I still like it very much.3.The food in Chongqing is quite different from that in Guangdong.15.no=not.any+不可数/复数名词 no=not.a+单数名词16.run out /run out of 用完，耗尽 run out 主语为物，且无被动。run out of 主语为人 eg.Our food has already run out.=We have already run out of the food.17.reach a speed of+具体速度，达到某个速度 at a

16、speed of+具体速度，以某个速度18.German n.德国人，德语 (pl.Germans)Germany n.德国 The sun,wind,waves and heat from deep in the earth are energy sources.They will never run out so they are called renewable sources.In 2011,about 16%of energy used worldwide came from renewable sources.The use of it is increasing rapidly

17、each year.2a.Read the passage below and match the pictures with the sentences.Then discuss in detail the use of one energy source.1.Wind can produce electricity in many places.2.People use sunlight to produce electricity.3.Sea waves are used for producing electricity.4.People use hot water or steam

18、from deep in the earth to produce electricity and heat for factories,schools and homes.（2）（4）（1）（3）2b.Take notes on your discussion and write a passage with them.You may begin like this:Sunlight can produce a lot of energy.People began to use the energy from the sunlight in different ways many years

19、 ago Sunlight can produce a lot of energy.People began to use the energy from the sunlight in different ways many years ago.We can use it to warm the house in the winter,to heat the water for baths,and to produce electricity.Whats more,we can even use it to run vehicles directly in the near future.A

20、s is known to us,the energy from the sunlight has a lot of advantages.For example,it is clean,renewable and non-polluting.Besides,it does no harm to our nature.So wed better use it as much as possible.You can write it like this:Exercises in class 1.使用某物做某事 2.全世界 3.寻找 4.不但.而且 5.太.而不能做某事 6.花费某人多长时间做某事

21、 7.是第一个做某事的.8.某事需要被做 9.要求某人做某事 10.达到多少数量 11.用完，耗尽 12.之一 13.达到某个速度 14.以某个速度1.use sth.to do sth.=use sth.for(doing)sth.2.all over the world 3.look for4.not only.but also.5.too+adj.+to do sth.6.It+takes+(sb.)+time +to do sth.7.be the first/second/-+n.+to do sth.8.sth.+require+(doing)sth.9.require sb.to

22、 do sth.=ask sb.to do sth.10.up to-11.run out /run out of12.one of-13.reach a speed of+具体速度14.at a speed of+具体速度Exercises in class1.We all know that learning a language_time and effort.A.requires B.reduces C.removes D.reuses2.We think human beings may live on the moon in the future._,no one is sure

23、about it.A.While B.Whatever C.Since D.However3.-What do you think of your new classmate?-She_has good grades_ is glad to help others.A.too.to B.not only.but also C.both.and D.so.that4.-Do you take exercise every day?-Yes.It usually_me about half an hour to do that.A.spends B.costs C.takes D.pays5.-D

24、o you think fresh water can_ on earth one day?-Im afraid so,if people dont save it.A.take out B.go out C.run out D.put out6.A farmer in England used animal waste_his car.A.ran B.running C.to run D.runs7.Electric cars work well,_ they are slow_ cant run for long.A.and;but B.though;but C.but;and D.bec

25、ause;but8.Its necessary _ you to hand in your homework on time.A.of B.for C.to D.withADBCCCCB18Talk about the advantages and disadvantages of some kinds of energy.1.Some words:acid,nuclear,biogas,straw,renewable,disadvantage,process,electric,best-known,maglev train,per,efficient,path,steel,wave,sour

26、ce,worldwide,sunlight,steam,technology,require,German,wheel,guide,deep2.Some phrases:run out3.Some sentences:(1)In many countries,people produce power from coal,but it is very dirty and causes acid rain.(2)They will never run out so they are called renewable sources.SummaryWe learn:We can:1.Read 1a.2.Memorize the useful expressions and key sentences which we learn today.3.Finish Section C in your workbook.4.Write a passage about one of the energy sources in 2a.Homework