牛津英语8A_chapter6.ppt
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1、 Chapter 6Oxford 8A Chapter SixReading: Pollution fighters抵御污染的斗士采访访谈抵御污染的斗士采访访谈了解有关树木的知识了解有关树木的知识P79Listening 写通知写通知 P81Language现在进行时现在进行时 P82 不常用在现在进行时中的动词不常用在现在进行时中的动词P83Speaking 元音音标元音音标【i】和】和【i:】 P84讨论战胜污染之法讨论战胜污染之法 P85Using English书的目录书的目录P86Writing 关于建户外休闲区的新闻报道关于建户外休闲区的新闻报道P87More practice 市
2、区树木的好处市区树木的好处P88What are the problems in the following pictures?The environment is polluted!What are the problems in the following pictures? pollution air pollutionwater pollutionnoise pollutionmaking things dirty and unhealthyP78.A-2pollution fightersTrees are pollution fightersWhat do you know abo
3、ut trees?What good are trees?e.g. green ; cool ; some special trees; table ; furniture ; summer ; Tree-planting Day (12 March); forest; oxygen Step 2. DiscussionWhat can we get from trees?eatdrinkuseP78-A.3rubberoilchopstickscottonpencilteatablebooknutsbeansfruitTrees are very useful. Judys school t
4、ook part in a tree-planting campaign. To attract people to join, Judy and Rita wrote a notice. Listen to them talking, and complete the notice. Come and help us to plant some trees!Eight reasons for helping to plant trees:1 Trees make streets more _ .2 Trees make streets less _ .3 Trees make our air
5、 _ .4 Trees make our air _ .5 Trees make _ to keep us alive and _.6 Trees provide us with _ things like _ and _.7 Trees help us to fight _ .8 Trees are in _ .Step 3. ListeningbeautifulnoisypurercooleroxygenhealthyusefulfruitpaperpollutiondangerFrom listening, we know that trees can help us to fight
6、pollution. Air pollution Water pollution Noise pollutionTrees are so important. Do you think trees live shorter than people and animals?P78-A.1How long do trees live?150 years4000 years3 yearsmicepeoplewhalestortoisestrees70 years40 yearsDo you think trees can really live for 400 years?What happens
7、to trees now?If therere no trees,what will our earth be like?What will our earth be like if therere no trees?What should we do to protect our earth?Title:Pollution fightersSubtitle:Judy is collecting some facts for a class project on pollution .she is interviewing Doctor Ray, a scientist, about tree
8、s.Pictures:P78BTrue or False( ) 1. The pollution fighters are probably scientists.( ) 2. A few useful products come from trees.( ) 3. Trees produce harmful gases.( ) 4. Trees can pass information to one another.FFFT Pay attention to the sentences beginning with Wh- or How.Step 3. Scanning 1. Why is
9、Doctor Ray so interested in trees? 2. What good are trees? 3. What else can trees do? 4. A lot of things come from trees. Please give some examples. 5. What are natural air conditioners? Why ? 6. How many students are there in Judys class? 7. How many trees could produce enough oxygen to keep 46 peo
10、ple alive and healthy for a year? 8. What can trees do to the air? 9. How many trees can do the job of 5 air conditioners running almost all day? 10. Why are trees in great danger?Step4: Reading for detailsPay attention to such words: but, when, while, so 1. Look at the questions below the three pic
11、tures and find the answers from the interview 2. Fill in the blanks2. Fill in the blanks Judy: You certainly know a lot about trees, Doctor Ray. Dr Ray: Thank you ,Judy, _I dont ,really. Scientists are only now _ to understand them. For example, did you know that _insects attack a tree, it can _its
12、neighbours? The trees can then protect themselves by_ a_ that makes their leaves taste _.And some trees can join their roots _underground, and pass food and water around. Trees are _with one another, but we dont know_. Judy: Are trees in_? Dr Ray: In great danger. We cut down and burn _every year bu
13、t we replace _any of them. We are _our best _against pollution.butbeginningwarnchemicalnastyhowdangerhardlytogethermillionsproducingcommunicatingfightersdestroyingwhen3. Do exercise D on P80D. Find the facts: Correct Judys mistakesTrees:1. live much longer than people;T2. produce wood, rubber, paper
14、, nuts, beans and fruit.Ttake oxygen fromthe air;F heat the air;F5. are like air conditioners;Tcannot protect themselves against insects;F7. can share food and water with one another;T8. are in danger, mainly frominsects.F3. release oxygen into4. cool6.canpeople/human.1. R: We get some useful things
15、 from trees, dont we ? M: _ . Two examples are _ .2. R: Is it true that trees do two main things to the air? M: _. They _.3. R: Ive heard that one tree has the power of 15 air conditioners. Is that right? M: _. One tree has the power of _.Yes cool it and clean it.five air conditioners.Yes No wood an
16、d rubber4. Do exercise E on P814. R: Scientists know a lot about trees, dont they? M: _. They are _.No only now beginning to understand them5. R: Can trees really communicate with one another ? M: _. For examples, if insects_.6. R: And can they really protect themselves from insects? M: _. They can
17、produce_.7. R: Can trees help one another ? M: _. For example, they can _.8. R: Is it true that , every year, there are fewer and fewer trees in the world? M: _. The reason is that people _.Yes attack a tree, it can warn its neighboursYes a chemical that makes their leaves taste nastyYes join their
18、roots together underground and pass food and water groundYes cut down millions of trees, but replace hardly any of them.Read aloud Pay attention to the pronunciation and intonation of each sentence.一、一、Important words:1.live活生生的人活生生的人/物物只做定语只做定语live animals / teacher alive (-dead) 指人还活着的(状态)指人还活着的(状
19、态)表语形容词表语形容词 Hes alive. living没死或没消失,人没死或没消失,人/物物定语或表语定语或表语 a living plant2. pollute - pollution air/water/food/noise3. else 置于不定代词或疑问代词后置于不定代词或疑问代词后 what else/ who else/ something else other 置于名词前,修饰名词置于名词前,修饰名词 other things.4. warn 警告警告 warn sb. of/about sth. warn sb. not to do sth. warn sb. again
20、st sth. (提防提防) warn sb. that.5. replace 代替代替 with/by sth.二、二、Old phrases:1. come from=be from2. be known as 作为作为而出名而出名 be famous for/ aswell-known best-known3. pass(on) to Trees can pass information to one another.4. one another 3 each other =25. be interested in (surprise/amaze/excite) I am interes
21、ted in the interesting book.6. on earth on the earth7. on the end of8. natural air conditioners 9. join together10. in danger / in trouble三、三、New phrases:1. average ages2. takefrom releasefrom/into 3. as well as 连接两个并列成分,连接两个并列成分,“既,又既,又”Trees cool the air as well as clean it. He knows English as we
22、ll as German. Tom can sing as well as dance.4. protect sb. by doing sth. 通过通过 from the sunshine 免受来自于免受来自于的伤害的伤害 against attacks 免受袭击免受袭击5. communicate with与与相通相通/联系联系/交流交流communicate sth. to 传送传达传送传达6. hardly any of them=almost none of them hardly=almost not 几乎不几乎不 There is hardly any coal left, th
23、ey feel very cold.7. provide sb. with sth. provide sth for sb. 8. make a mistake/ mistakes9. much longer much, a little, a bit, far, even 程度副词常用来程度副词常用来修饰形容词或副词的比较级,表示修饰形容词或副词的比较级,表示“得多得多”四、四、Sentences:1.What good are trees? good=benefits 好处利益好处利益2. Make streets beautiful and less noisy. make 使役动词使役
24、动词adj. / n. /分词(作宾补)分词(作宾补) Dont make him angry. We make him our headmaster. What he said makes us very pleased. Keep 保持保持adj. /分词分词/介短(作宾补)介短(作宾补) Keep your whole class alive and healthy.3. I suppose you also enjoy breathing pure, cool air. suppose猜想假想猜想假想+(that)从句做宾语)从句做宾语enjoy+ n./ pron./doing st
25、h. (finish/mind/practise)Period 4复习复习reading部分,部分,做练习!做练习!Step 1 Guess wordsStep 2 Important phrasesStep 3 Answer questions about the textStep 4 T or F( )1. The pollution fighters are probablyscientists.( ) 2. Few useful products come from trees.( )3.Trees produce harmful gases.( )4. Trees can pass
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