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1、Chapter Two Pollution Fighters 【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件Look and ThinkWhat good are trees?【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件We get shade from trees. 【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件We get_from trees.better cities【最新】八年级英语下册 Chapter 2 Poll
2、ution Fighters课件 牛津上海版 课件We get _from trees.wooden houses【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件We get _from trees.furniture【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件We get _from trees.paper【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件We get _from trees.pencils【最新】八年级英语下册
3、Chapter 2 Pollution Fighters课件 牛津上海版 课件We get _from trees.coke【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件We get _from trees.coffee beans【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件We get _from trees.fruits【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件What do you know about?How lo
4、ng do they live?Match the items on theleft with the average ages on the right.a mice i 70 yearsb trees ii 150 yearsc tortoises iii 40 yearsd whales iv 4000 yearse people v 3 years【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件What does the word mean?1 1.supposea. knowb. think it is truec.ask3. r
5、eleasea. bring inb. take awayc. let out5. communicating witha. attackingb. sending message/ signals toc. joining2. purea.not mixed with other fortable4. runninga.travelingb.workingc.playing6. hardly anya.quite a lotb.almost nonec.a large number【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件1. si
6、p a. made by nature, not by man2. nature b. unpleasant3. oxygen c. drink in small amounts4. hectares d. a life-giving gas found in air5. warn e. something produced by chemistry6. a chemical f. areas of 10000 square meters7. nasty g. gay that something bad ordangerous or may happensDo you know the me
7、aning?【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件Find the factsTrees:Trees:1. live much longer than people;1. live much longer than people;2. produce rubber, wood, paper, nuts, beans and fruit;2. produce rubber, wood, paper, nuts, beans and fruit;3. take oxygen from the air;3. take oxygen fr
8、om the air;4. heat the air;4. heat the air;5. are like air conditioners;5. are like air conditioners;6. cannot protect themselves against insects;6. cannot protect themselves against insects;7. can share food and water with one another;7. can share food and water with one another;8. are in danger, m
9、ainly from insects;8. are in danger, mainly from insects;TTTTFFFFreleasecoolcanpeople/humans【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件Answer the questions1. We get some useful things from trees, dont we?Yes. Two examples are wood and rubber.2. Is it true that trees do two main things to the
10、 air? Yes. They cool it and clean it. 3. Ive heard that one tree has the power of 15 air conditioners. Is that right? No. One trees has the power of five air conditioners.4. Scientists know a lot about trees, dont they? No. they are only now beginning to understand them.【最新】八年级英语下册 Chapter 2 Polluti
11、on Fighters课件 牛津上海版 课件5. Can trees really communicate with one another?Yes. For example, if insects attack a tree, it can warm its neighbors.6. And can they really protect themselves from insects?Yes. They can produce a chemical that makes their leaves taste nasty.Answer the questions7. Can trees he
12、lp one another?Yes. For example. They can join their roots together under-ground and pass food and water around. 8. Is it true that, every year, there are fewer and fewer trees in the world?Yes. The reason is that people cut down millions of trees, but replace hardly any of them.【最新】八年级英语下册 Chapter
13、2 Pollution Fighters课件 牛津上海版 课件ListeningListen and complete the notice below by putting one word in each space.Eight reasons for helping to plant trees:1 Trees make streets more _.2 Trees make streets less _.3 Trees make our air _.4 Trees make our air _.5 Trees make _ to keep us alive and _.6 Trees
14、provide us with _ things like _ and _.7 Trees help us to fight _.8 Trees are in _.beautifulnoisypurercooleroxygenhealthyusefulfruitpaperpollutiondanger【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件What are they doing now? 【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件They are having a rest
15、 under the trees. 【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件They are planting trees. 【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件They are picking apples from the apple trees.【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件They are cutting trees. 【最新】八年级英语下册 Chapter 2 Pollution Fig
16、hters课件 牛津上海版 课件DiscussionMake a dialogue according to the model:A: What can we do to fight pollution?B: Always put litter in litter bins, and stop using plastic bags for shopping.A: Anything else?B: Stop factories from producing unhealthy gases, plant more trees in the streets, and make classrooms
17、less noisy.A: Which ways are more important and which ways are less important?B: I think that .Model:【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件Write a report on fighting pollution Our group thinks that the most important way to fight pollution is to _. The second is to _. The third is to _.
18、 The fourth is to _. The fifth is to _. Everyone in our group agrees/Most people in our group agree to this arrangement.Writing:【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件Homework: Write a short article about building a new sitting-out area near Write a short article about building a new sit
19、ting-out area near your home for your school newspaper.your home for your school newspaper. Near my home, there is a _. Some workers finished it last week. I watched them from my flat. First, _(workers/arrive/lorry). On the back of the lorry there _(be/trees/brushes). The workers _(dig/holes/ground)
20、. Second, they _(plant/trees/holes). Next, they brought some large containers. They _(put/earth/containers). Then they _ ( plant / brushes / containers ).Next, they _(pick up/all rubbish) and _(sweep/area/neatly). After that, they _(water/plants/hose). Then the area was finished. Now it looks_.【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件Homework:Think over how many kinds of pollutions wehave learned before and what they are. After class, try to find the pollution fighters of themand write a composition about them.【最新】八年级英语下册 Chapter 2 Pollution Fighters课件 牛津上海版 课件
