上海版牛津初中英语课件8A Chapter 6.ppt

oxford english,8a chapter 6,oxford 8a chapter six,课时安排 (8-9课时),reading& listening: 4课时 language: 2课时 writing: 1课时 speaking, using english & more practice:1-2课时,period 1,teaching targets: 1.to develop students abilities of predicting, speaking and listening. 2.to let students realize the importance of trees in their life. problems to solve: 1. pre-reading. a (p78) 2. listening (p81),what are the problems in the following pictures?,the environment is polluted!,what are the problems in the following pictures?,pollution,air pollution,water pollution,noise pollution,making things dirty and unhealthy,p78.a-2,pollution fighters,trees are pollution fighters,how to solve the problems?,what do you know about trees? what good are trees?,e.g. green ; cool ; some special trees; table ; furniture ; summer ; tree-planting day (12 march); forest; oxygen,step 2. discussion,what can we get from trees?,eat,drink,use,p78-a.3,rubber,oil,chopsticks,cotton,pencil,tea,table,book,nuts,beans,fruit,trees are very useful. judys school took 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 _ . 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. listening,beautiful,noisy,purer,cooler,oxygen,healthy,useful,fruit,paper,pollution,danger,from listening, we know that trees can help us to fight pollution.,air pollution water pollution noise pollution,trees are so important.,do you think trees live shorter than people and animals?,p78-a.1,how long do trees live?,150 years,4000 years,3 years,mice,people,whales,tortoises,trees,70 years,40 years,do you think trees can really live for 400 years?,what happens 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?,period 2,3,teaching targets: to train the class reading skills and good habits on reading. problems to solve: exercises b,d and e,air pollution,water pollution,noise pollution,teaching procedure,step 1:,pollution fighters,read the title , subtitle, pictures, the first paragraph and the last paragraph, the first sentence and the last sentence of each paragraph.,step 2: skimming (p78, b. look and think),title: pollution fighters subtitle: judy is collecting some facts for a class project on pollution .she is interviewing doctor ray, a scientist, about trees. pictures:,true 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.,f,f,f,t,pay attention to the sentences beginning with wh- or how.,step 3. scanning,1. why is 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 people 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 details,pay attention to such words: but, when, while, so ,1. look at the questions below the three pictures and find the answers from the interview,2:whats the relationship between trees and air conditioners?,3:what do the two trees do?,1: who are they?,the girl is judy, the woman is dr ray.,three trees can do the job of 15 air co- nditioners running almost all day.,they join their roots together.,2. 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 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 but we replace _any of them. we are _our best _against pollution.,but,beginning,warn,chemical,nasty,how,danger,hardly,together,millions,producing,communicating,fighters,destroying,when,3. do exercise d on p80,d. find the facts: correct judys mistakes,trees:,1. live much longer than people;,t,2. produce wood, rubber, paper, nuts, beans and fruit.,t,take oxygen from,the air;,f,heat,the air;,f,5. are like air conditioners;,t,cannot,protect themselves against insects;,f,7. can share food and water with one another;,t,8. are in danger, mainly from,insects.,f,3.,release oxygen into,4.,cool,6.,can,people/human.,r: we get some useful things 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 and rubber,4. do exercise e on p81,4. r: scientists know a lot about trees, dont they? m: _. they are _.,no,only now beginning to understand them,5. 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 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 neighbours,yes,a chemical that makes their leaves taste nasty,yes,join their roots together underground and pass food and water ground,yes,cut down millions of trees, but replace hardly any of them.,read aloud,pay attention to the pronunciation and intonation of each sentence.,一、important words:,live 活生生的 人/物 只做定语 live animals / teacher alive dead 指人还活着的（状态）表语形容词 hes alive. living 没死或没消失，人/物 定语或表语 a living plant 2. pollute pollution air/water/food/noise 3. else 置于不定代词或疑问代词后，修饰前边词语 what else/ who else/ something else other 置于名词前，修饰名词 （what）other things. 4. warn 警告 warn sb. of/about sth. warn sb. not to do sth. warn sb. against sth. (提防) warn sb. that-clause 5. replace 代替 with/by sth.,二、old phrases:,1. come from=be from 2. be known as 作为而出名 be famous for/ as well-known best-known 3. pass(on) to trees can pass information to one another. 4. one another 3 each other =2 5. be interested in (surprise/amaze/excite) i am interested in the interesting book. 6. on earth on the earth 7. on the end of 8. natural air conditioners 9. join together 10. in danger / in trouble,三、new phrases:,1. average ages 2. takefrom releasefrom/into 3. as well as 连接两个并列成分，“既，又” trees cool the air as well as clean it. he knows english as well as german. tom can sing as well as dance. 4. protect sb. by doing sth. 通过 from the sunshine 免受来自于的伤害 against attacks 免受袭击,5. communicate with 与相通/联系/交流 communicate sth. to 传送传达 6. hardly any of them=almost none of them hardly=almost not 几乎不 there is hardly any coal left, they feel very cold. 7. provide sb. with sth. provide sth for sb. 8. make a mistake/ mistakes 9. much longer much, a little, a bit, far, even 程度副词 常用 来修饰形容词或副词的比较级，表示“得多”,四、sentences:,what good are trees? good=benefits 好处利益 2. make streets beautiful and less noisy. make 使役动词 adj. / n. /分词 （作宾补） dont make him angry. we make him our headmaster. what he said makes us very pleased. keep 保持 adj. /分词/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+（that）从句做宾语 enjoy+ n./ pron./doing sth. (finish/mind/practise),period 4,复习reading部分，做练习！,step 1 guess words,step 2 important phrases,step 3 answer questions about the text,step 4 t or f,( )1. the pollution fighters are probably scientists. ( ) 2. few useful products come from trees. ( )3.trees produce harmful gases. ( )4. trees can pass information to one another. ( ) 5. one tree has the power of 15 air conditioners. ( ) 6.scientists know a lot about trees.,true or false,f,f,f,t,f,f,what can trees do?,make streets more beautiful and less noisy cool and clean the air take harmful gas from the air release oxygen into the air three trees can do the job of 15 air conditioners,trees are in danger,discuss,how can we protect trees in danger?,we should we shouldnt,exercises:,用所给单词的正确形式填空,pollution means _ (make) things dirty and unhealthy. 2. which of the _ (follow) come from trees? 3. the large sweet-smelling flowers _ (know) as the flowers of shanghai city. 4. the pollution fighters are probably _ (science). 5. they are the biggest and oldest _ (live) things on earth.,making,following,are known,scientist,living,choose the best answers. 1.hes the only soldier_ in that war. see, soldiers lives are always full of _. a living ;dangerous b. alive ; danger c. live; dangerously d. life; danger 2.-theres some pepper in the soup. - i know. i _ it. a. feel b. believe c. smell d. taste 3. thank you for _ me to your birthday party. a. invitation b. invite c. inviting d. being invite,fill in the blanks with proper forms trees are the earths _ and oldest living things. they make streets _ beautiful and _ noisy. they also _ wood, rubber, paper , fruit , nuts and beans. they clean and _ the air. they are _ air conditioners. they _ oxygen into the air. 1.5 _ of trees provide _ oxygen for 46 students for 1 year. three trees do the _ job as 15 air conditioners.,much, provide, nature, enough, hectare,big, little, cool, release, same,biggest,more,less,provide,cool,natural,release,hectares,enough,same,trees for life,more practice,the benefits of urban trees are that they reduce sound pollution, add beauty to cities and help increase the value of property.,the benefits of forest trees are that they provide shelter, food, things for humans and animals, material for houses, furniture, paper products, etc. ingredients for medicines.,the job of trees for life is to plant trees and help protect the environment.,1. what are the benefits of urban trees? 2. what are the benefits of forest trees? 3. what are the jobs of trees for life?,discuss,whats the importance of protecting trees? do you go and look after the trees after you have planted them? give your reasons.,在more practice中一名为“treesfor life“的组织张贴了他们的海报，宣传护树、植树、环保的理念。 作为仿写，要求学生们自成小组，运用所掌握的词汇及句式，制作自己的海报宣传环保。以下精选有代表性的习作共享。,writing,teaching targets enable students to know how to plant trees. enable students to write sentences with the simple past tense.,step1. lead-in what are they doing ? do you know how to plant a tree? dig a hole put the tree into the hole push the earth back step the earth water the tree,step 2. last march, i planted trees with some students. do you know how we planted the trees ?,dug a hole put the tree into the hole pushed the earth back stepped the earth watered the tree,step 3. write a short article on p87 1.put the pictures in right order,1,2,3,4,5,2. use simple past tense to talk about each picture note: bush; container; hose; sweep-swept,（对每幅图片提问，让学生回答！）,3. complete the article,(remind students to use the past forms of the verbs and some proper articles and prepositions in necessary places),near my home ,there is a _. some workers finished it last week. i watched them on my flat. first, _ (workers/arrive/lorry). on the back of the lorry there _ (be/trees/bushes). the workers _ _(dig/holes/ground). second, they _ (plant/trees/holes).,new sitting-out area,the workers arrived in a lorry,were some trees and bushes,dug holes,in the ground,planted the trees in the holes,next,they brought some large containers. they _ (put / earth/ containers).then they _ (plant/bushes/ container). next,they _ (pick up/all rubbish) and _ _(sweep/area/neatly).after that,they _(water/plant/hose).then the area was finished.now it looks_ .,put earth in the containers,planted bushes,picked up all the rubbish,swept the area,neatly,watered the plants with a hose,very beautiful,is there any change in your community? write it down.,what is it? what is it like? what good is it to people in the community?,language ( 2 periods) the present continuous tense,teaching targets enable students to master the present continuous tense remember the words that cannot be used in the present continuous tense,step 1.lead-in,from the interview, we have learnt that it is our duty to protect trees and environment. look at the pictures below, what are they doing?,what is the woman doing ?,she is putting rubbish into the rubbish bin.,what is the girl doing?,she is watering trees.,what are they doing ?,they are sweeping the streets.,they are collecting rubbish.,they are planting trees.,step 2. presentation,what tense did we use to talk about the pictures? present continuous tense form: be + v-ing am i what is he/she/it doing ? are we/they/you i am writing he/she/it is drawing we/they/you are listening,play a guessing game washing hair; fishing; brushing teeth; knocking at the door; putting on clothes; diving practice asking these questions in pairs: what is he/she doing? is he/ she fishing/standing/?,2. from the practice we do, sum up how to add ing to verbs: we usually add ing to most verbs. some verbs causes changes in their spelling.,is fishing,is practising theguitar,is sunbathing,sunbathe,is windsurfing,dive,is diving,hang-glide,is hang-gliding, do exercise a on p82,a1.example: s1: whats ted doing? s2: hes playing volleyball with carol.,a2. example: s1: is ted playing volleying? s2: yes, he is./ no, he isnt. hes _,dive fish play sunbathe eat hang-glide practise windsurf,4. 下列动词不用于现在进行时,常用于一般现在时 非延续性动词: 如 i accept your advice. 表情感状态的词,如love,like,hate,dislike, fear,care等 表内心状态的词,如know,suppose,understand, believe, think 表示感官的词,如see, hear,smell,feel,look, sound,taste 表示所属的词,如have,own, belong等 表示状态的词,如cost, exist,include,contain,seem,appear, remain, stand(保持) ,mean等 5. do exercises on p83,p162,p165,6(1)现在进行时的用法: 现在进行时表示说话者说话时正在发生或者进行的动作.可与now,at present, at this moment等时间状语连用 例如: -what are you doing now? -im looking for my key. 现在进行时表示目前一段时间内正在进行的动作(但说话时这个动作不一定在进行) ,可与these days/years等状语连用,例如: the students are preparing for the exam. 表示将来的动作:特别在口语中,句中常有一个表示未来的时间状语,多指已计划,安排好的事情 例如: im meeting peter tonight. hes taking me to the theater. 某些动词的进行时可以表示即将发生的动作. 这些动词有 arrive, come, leave, start,go等. 例如: they are going to hong kong tomorrow. be going to结构:准备或打算做某事,例如:hes going to work here. 即将发生或要发生的事 its going to be warm.,一、用所给动词的正确时态填空： 1. how _ you _ (get) on with your work? 2. look, the children _ (enjoy) themselves in the park. 3. mum _ (cook) supper when all of us came back. 4. what _ you _ (do) at that time? i _ (give) a class. 5. her grandma _ always _ (tell) her the same story.,are getting,are enjoying,was cooking,were doing,was giving,is,telling,二、选择填空： 1. i _ a meal when you _ me. a. cooked, were ringing b. was cooking, rang c. was cooking, were ringing d. cooked, rang 2. what book _ you _ when i _ you at four yesterday afternoon? a. did, read, was seeing b. did, read, saw c. were, reading, saw d. were, reading, was seeing 3. he said he _ to draw a plane on the blackboard at that time. a. tries b. tried c. was trying d. will t