八年级英语下册Chapter2PollutionFighters教学设计牛津上海版

1、Chapter Two Pollution Fightersi.章节分析 （一）综述本单元的Reading部分的文章是关于“树和环境”。通过一名中学生采访科学家来了解“树”对环境保护所起的作用。“污染”问题是一个旧话题，在 6B Module 1The Natural Elements和教材后面的 Project 1 The Environment 都谈论到环境与污染的问题；7A Module3 Natural Elements Unit 4 Forests and land中谈到了森林，实际上就是谈树的作用和用途。其中的大部分内容都是我们的学生很熟悉的，所以老师在引入新课时，可以从学生们熟悉

2、的话题“森林”.谈起，很自然的进入新课内容。本单元的Listening 部分也是围绕主题，通过 Completing a notice 的形式，进一步让 学生了解树的作用，从而积极投入到“植树战役”中去。 Language部分介绍了现在进行时 （the present continuous tense）的用法。Speaking 部分围绕本课的主题讨论 Howto fight pollution? 我们可以把这部分内容放在 Post-reading 环节，让学生进行讨论。 Using English 部分（The index） 老师可以告诉学生 the index 与the contents p

3、age 都可以帮 助我们快速了解一本书的信息，只是 the index的排版大部分在书后，而且是以字母循序排列的，有主题，比较详细而the contents page的排版在书的前面， 按页码排序。Writing 部分是为学校报纸写一篇有关工人们是如何建造一个sitting-out area 的文章。（二）教学目标 1.知识目标1）词汇：掌握本章出现的生词。2）语法：能熟练运用现在进行时的陈述句，一般疑问句，特殊疑问句。3）功能：能和同学，老师表达自己的思想。4）话题：能谈论“抗污染”这一话题。2.能力目标1）听：通过听录音材料来培养学生捕捉特定信息的能力。并强化自己在阅读中所获取 的信息。2

4、）说：通过看图说话，谈论话题，与同学交流，合作中反复运用语言，自己的所学来 表达自己的思想，观点。3）读：通过朗读对话，快速阅读来培养学生快速捕捉信息，解决问题的能力。4）写：根据所给话题，把自己的想法，观点与同伴的交流成果写在纸上。 3.情感目标通过谈论话题，小组合作的形式激发学生学习英语的兴趣以及合作意识。强化学生自主学习的目的。指导协同努力实现自己的教学目标。 （三）教学方法课文的引入和现在进行时态的训练时可使用游戏教学法。在课文教学中可采用任务型教学法，引导学生完成教学设计。 合作学习法完成说和写等部分的练习。（四）重点和难点.现在进行时：I m reading.He is not w

5、orking.Are they planting trees? What s Ted doing? He s p laying volleyball with Carol.Is Ted playing volleyball?Yes, he is. / No, he isn t. He s.快速阅读抓住自己需要的信息。通过听力的形式对所获取的信息进行巩固加深。.小组合作讨论如何防治污染并以对话的方式体现，并能自己阐明观点。.记录自己本节所学。II.教学设计：ReadingStep 1 Pre-reading1）老师可以通过复习旧句型：What can we get from forests?引出

6、本单元的主题。然后让学生根据图片一问一答做pair work ,来了解 What good .are trees? 当然除了老师提供的图片以外，也可以让学生根据自己了解到的知识自由发挥。老师与学生一起得出结论： Trees are very useful and important.老师接着问学生：What else do you know about trees? How long do trees live?然后让学生来做一个与树有关的 quiz。通过这个 quiz让学生知道 Trees are pollution fighters.老师还可以充分利用教参中的Notes来帮助学生进一步了解

7、树是如何与空气污染、水污染和噪音污染作斗争的。同时帮助学生解决部分Reading中的生词，如：chemical, produce,release, oxygen, nasty 等等。Step 2 While-reading（这是本课的重点部分）1）第一遍阅读文章，要求学生根据上下文的内容和线索猜测词意。2）第二遍通读全文，理解文章意思，并完成 Ex. D （page 18） 、Ex. E （page 19）。提醒学 生阅读时注意阅读方法的使用。比如，在做 Ex. D时，使用scanning即跳读的方法寻 找具体问题的答案。在做 Ex. E时，使用skimming即略读的方法，注意文章中的主题

8、句和关键句。3)听课文录音。4)重点词汇及句式讲解。collect some facts for a class project on pollutionpollute (v.) / pollution (n.) / polluted (adj.) / pollutant (n.)污染物interview (vt.) Doctor Raybe interested in = be keen on / be fond of / enjoy / like喜欢，感兴趣show (great) interest ininterest (n./v.) / interesting (adj.) / int

9、erested (adj.)the biggest and oldest living things on earthlive (v.) 生活，居住 e.g. Where do you live?(adj.) 活着，有生命 e.g. Have you ever touched a real live snake?现场直播的 e.g. It wasn t a recorded show, it was live.lively (adj.)有生气的，活泼的，充满活力的e.g. They are lively children.alive (adj.) 活的 e.g. The young woman

10、was still alive when the ambulance reached the hospital.He kept the little cat alive by feeding it warm milk.充满生机的 e.g. In the evening the town really comes alive.(名词后用 alive)living (adj.) 活的 e.g. Does he have any living relatives? ( 名词前用 living)(n.) 生活 e.g. She makes a living by selling newspapers.

11、life (n.)( 个人的)生命 C e.g. Three lives were lost in the fire.Doctors fought all night to save her life.生活 U e.g. Life can be hard for a single parent.That s life , you can t change it.Exercises: 1) My family in New York ten years ago.Is your grandfather?What is the oldest things in the world?Policemen

12、 make our safe.The people should always look forward.My pet dogs ar e dying. Can t you make them?I make a by teaching in a middle school.What good are trees? = What is the good of trees?树有什么好处呢?make streets more beautiful and less noisynoise (n.) / noisy (adj.) / noisily (adv.)else (adj.) 其它的(置于疑问代词

13、或不定代词后)e.g. What else can they do? Do you want to buy anything else?other (adj.)其它的(置于名词前)e.g. Westudy Chinese, math, English and other subjects.suppose (v.) = think something to be truee.g. I suppose you felt tired after running the marathon (, didn tyou?).suppose = pretend that something is truee.

14、g. Suppose you had a million dollars, what would you do?enjoy breathing pure, cool air (enjoy doing sth)breath (n.) bre 0 / breathe (v.) bri:Exercises: 1) People slowly when they are sleeping.You can see people s on a cold day.I need a of a fresh air.The doctor told me to in and out again slowly.Tha

15、nk sb for sth. e.g. Thank you for your help. / Thank you for helping me.natural air conditioners自然空调 (nature / natural)take harmful gas from the airrelease oxygen into the airone and a half hectares of tree一公顷半的树木produce enough oxygen to keep your whole class alive and healthy for a year产生足够的氧气供你们全班

16、学生一年时间的存活和健康成长Trees cool the air as well as clean it.as well as =besides / in addition toe.g. On Sundays, his farm pr ovided lunch as well as breakfast.It is important for you as well as for me.Father as well as his childrenhasn t been to Euro Disney.(远离原贝U )William Shakespeare was an actor as well

17、as a play writer.(强调前者 )=William Shakespeare was not only a play writer but (also) an actor.(强调后者)Three trees can do the jobs of 15 air conditioners running (=as they are running ) almost all day.know a lot about treesattack a tree 攻击树 attract one s attention引起某人注意warn its neighborswarn sb of sth./s

18、b warn sb against doing sth匕 g. The policeman warned us against running across the road.警察警告我们不要跑着过马路。They用辽口 people aga.inst destroying trues. 他们警告人们不要破坏树木。protect themselves by producing a chemical通过产生一种化学物质保护他们自己chemistry (n.) / chemical (adj./n.) /chemist (n.)Exercises: 1) 一个化学实验 a experiment2)

19、一个化学工厂a factory3)化学是她在学校时最好的科目 is her favorite subject at school.4)奇怪的化学反应使两个人相爱了. A strange makes two people fallin love.他去药房买药。He went to the to buy some medicine.make their leaves taste nasty使得树叶尝起来味道很糟make + 宾语 + do sthjoin their roots together underground在地下的树根盘环桓交错在一起pass food and water around

20、pass (v.) / past (prep.)Exercises: 1) I can a church on my way to school.I walk the church.3）街道太拥挤了车无法通行。The street was so crowded that cars were unableto.4)他走过那家商店。He walked that municate with each other 互相交流be in dangerdanger (n.) / dangerous (adj.) / dangerously (adv.)destroy our best fighters ag

21、ainst pollutionStep 3 Post-readingRead the text again and every student must prepare at least two questions about trees in the text for other students.用这种方式训练学生发现问题和解决问题的能力。让每个学生都参与进来。不会问问题的学生可以回答别的学生提出的问题。提出问题的学生可以从其他学生那里得到问题的答案，也可以和大家一起回答自己没有想到的问题。这种活动更能体现学生的自主学习。老师只在适当的时候提供帮助。当然也可以利用课本 Speaking中的

22、对话材料让学生进行讨论What can we do to fightpollution?来进一步巩固 课文，提高学生的语言运用能力。最后将讨论的主题笔头记录下来，作为学生回家的笔头作业 (How to fight pollution?) 。ListeningStep 1 Pre-listening在听之前，创设情境，要求学生明确听力任务，如有生词，可以先帮助学生(recognize key words),扫清在听力材料中出现的词汇，提高听的效果。 本单元的听力材料是一段对话，话题还是跟树有关，要求学生在听了对话之后完成一个poster填写。Step 2 While-listening诱发兴趣，

23、增强听的动力。可以让学生先将poster看一看，然后再听。再根据所听内容完成poster的填写。Step 3 Post-listening要求学生根据poster的内容进行pair work的活动。培养学生的听说能力。Language (the present continuous tense)Step 1 Lead inWarming up: Talk about the pictures by asking and answering.e.g. A: What are they doing? B: They are planting trees.A:Are they picking app

24、les? B: Yes, they are picking apples from the appletrees.Present “the present continuous tense ”Tell the students what we use the present continuous tense for. (Talking about what is happening now)What is the structure? am/is/are + doingFirst, do spelling exercises to add ing to the infinitive of th

25、e verb. (e.g.eateating, singsinging, study-studying.)Show the table on the computer.For most verbs ending inChangeExamplesOne e (except be)Drop e , and add ingadvis ingdriv ingusingbeingieChange ie to y , and add ingdying ty ing ly ingConsonant letter + vowel letter+ consonantletterDouble the last l

26、etter (except where the last letter is a y), and add ingcutting sto ppingwi nning puttingsayingStep 2 ExercisesWrite the correct - ing form of these verbs.1.be9. lie2.become10. load3.begin11. pull4.carry12. put5.drop13. rain6.escape14. 8.iron16. yawnCommon errors.What you are d

27、oing? I watching television. Im listen to a cassette. Put the verbs in brackets in the present continuous tense to make sentences. Makethe verbs with question marks into questions. Add any necessary punctuation marks.The first one is done for you.the Grade Eight students (play) volleyballThe Grade E

28、ight students are playing volleyball.Richard and Ping Kang (camp?)Ye Qing (shop)Joyce (sweep?) the floorDo the exercises to learn the differences between the simple present tense and the present continuous tense.他们很熟悉一般现在时，也刚刚学过现在进行时，这道练习可以对这两种时态进行区分，巩固所学，加深理解。I (have) my fourth cup of tea this morning. I often (not drink) so much tea.I m having my fourth cup of tea this mo