Chapter 2 Pollution Fighters（精选2篇）八年级英语教案
Chapter 2 Pollution Fighters（精选2篇）
Chapter 2 Pollution Fighters 篇1
chapter 2 pollution fighters
一 learning aims:
1.通过阅读，了解树木对于环境的作用。
2.学会查阅书籍的目录。
二 main phrases:
words
chemical communicate nasty natural oxygen pure release hectare suppose warn hardly sip
phrases
1.average ages 平均年龄
2.magnolia trees 白玉兰树
3.sweet-smelling flowers 气味芬芳的花朵
4.be known as... 被誉为
5.collect some facts for... 为......收集一些事实材料
6.a class project on pollution 一个有关污染的班级实践项目
7.interview sb. about sth. 就有关......采访某人
8.be interested in (doing) sth. 对......感兴趣
9.living things 生物
10.make...less noisy 减少......的噪音
11.on the end of ... 在......顶端
12.sip a coke 小口地喝些可乐
13.breathe pure air 呼吸纯净的空气
14.thank...for (doing) sth. 为......而感谢某人
15.natural air conditioners 天然空调
16.harmful gas 有害气体
17.take… from… 把......从......中拿走
18.release … into… 释放......进入
19.one and a half hectares of trees 一公顷半的树林
20.produce enough oxygen 产生足够的氧气
21.keep… alive 使......存活
22.as well as 也,同样
23.for example 例如
24.warn sb (not) to do sth 告戒某人(不要)做某事
25.warn sb. of sth. 预告/ 预先通知某人某事
26.protect oneself by doing sth. 通过......保护自己
27.produce a chemical 产生一种化学物质
28.make… do sth. 使某人做某事
29.taste nasty 尝起来令人作呕的
30.join… together 把......连在一起
31.pass … around 传递......
32.communicate with sb. 和......交流/ 交际
33.one another = each other 互相
34.in danger 处于危险中
35.hardly any = almost no 几乎没有
36.our best fighters against pollution 我们最好的反污染卫士
sentence patterns
1. trees cool the air as well as clean it.
2. they make streets more beautiful and less noisy.
3. trees are communicating with one another.
三 language points :
1.on earth = in the world 在世界上
on the earth 在地球上
2. living a. alive now 有生命的 作定语
e.g. he’s the world’s most famous living artist. 他是世界上最著名的仍然健在的艺术家。
alive a. living; not dead 活着的 做表语
e.g. i didn’t know if he was alive or dead. 我不知道他是死是活。
3 make sb./ sth. to be or become sth.
make + n. + adj. 使某人或某物变得。。。
e.g. the news made him very happy. 这条消息使他很高兴。
make sb. /sth. do sth. 让某人做某事
e.g. my mother made me wash the dishes after dinner. 妈妈让我吃饭后洗衣服。
be made of 由。。。制成 （ 看得出原材料）
be made from由。。。制成 （ 看不出原材料）
be made in 在。。。制成
4. less + adi. 原级 位于形容词或副词前与more + 形容词或副词及加 er 构成的比较级意思相反
noisy a. noisily adv.
5. at the end of 在 。。的尽头 at the beginning of 在 。。。 的 开始
6.breathe v. to take air into your lungs and send it out again through your nose or mouth
breathe in 吸入 breathe out 呼出 breath n. 呼吸的空气
7.keep sb./sth. + adj. 使 。。。 保持某种状态
e.g. an air-conditioner can kept the room clean.
keep 可作系动词，后面直接加形容词
四 exercises: i. choose the best answer:
( ) 1. the teacher often asks us _______ carefully during the class.
a. listen b. to listen c. listening d. listened
( ) 2. after having his meal, jack continued ________ computer games.
a. plays b. to play c. playing d. played
( ) 3. mrs. li goes to _______ her son from school every afternoon.
a. meet b. see c. visit d. collect
( ) 4. if it ________ tomorrow, we will have a picnic.
a. not rain b. won’t rain c. doesn’t rain d. isn’t rain
( ) 5.i ________ the hobby group three months ago and i _______ the meeting every monday.
a. took part in; join b. entered for, take part in
c. joined, attend d. attended, enter
( ) 6. may is keen on _______.
a. dance b. danced c. dancing d. to dance
( ) 7. it’s too cold outside, please _________ your coat.
a. put on b. wear c. putting on d. wearing
( ) 8. jenny enjoys _________.
a. go fishing b. going fishing c. to go fishing d. goes fishing
( ) 9. yesterday, i went to school ______ a taxi because i got up late.
a. by b. on c. with d. in
( ) 10. trees can protect themselves ________ producing a chemical.
a. from b. by c. of d. for
ii. translate the following phrases into english;
1 对 …… 感兴趣 2 树木有什么好处？
3 释放氧气到空气里 4 在危险中
5 从空气中除去有还气体 6 喝口咖啡
7 把 …… 连在一起 8 互相交流
9 对付污染 10 砍倒
iii. translate the following phrases into english;
1. 警方正在用无线电联系。
2. 农民用一种化学产品杀灭田里的害虫。
3. 律师要求警方立即释放他的客户。
4. 这个新的公园战地60公顷。
5. 我必须警告你不要出去，暴风雨要来了。
iv. rewrite the sentences as required:
1. they are old but they are still work in the field. （ 保持原句意思）
________ they are old, they still work in the field.
2. trees produce enough oxygen to clean the air. （ 保持原句意思）
trees clean the air by _________ enough oxygen.
3. tom spent half a month painting his house. （ 保持原句意思）
_______ _______ tom half a month ________ _______ his house.
4. my brother is so young that he can’t go to school. （ 保持原句意思）
my brother is so _______ _______ to go to school.
5. judy is interviewing dr. ray. （反意疑问句 ）
judy is interviewing dr. ray. , _______ _______.
Chapter 2 Pollution Fighters 篇2
一 重点词汇average n. 平均的magnolia n. 木兰花best-known adj. 最著名的produce v. 提供sweet-smelling adj. 散发香味的project n.. 计划；实验；工程 sip v. 啜饮 suppose v. 假设 breathe v. 呼吸 pure a. 纯净的 hardly adv. 几乎不natural adj. 自然的gas n. 气体release v. 释放oxygen n. 氧气attack v. 攻击warn v. 警告chemical n. 化学物质underground adv. 地下地communicate v. 交流replace v. 代替destroy v. 破坏nasty adj. 肮脏的belong toone anotheras well as二 重点句式 they made streets more beautiful and less noisy. tress cool the air as well as clean it.重点语法 一般现在时三 教学建议 reading: 1. 从植树节谈起，使学生认识到树木是人类的好朋友。要求学生列出我们日常生活中所用的物品，有哪些是从树上得来的。 2. 课文学习以 “what can tree do ?” 为主线，① make streets more beautiful and less noisy② produce wood, fruits, nuts, oxygen, and so on③ make air cool and clean④ communicate with one anotherlistening: 在做听力之前让学生先列出我们植树的原因。language: 复习现在进行时的同时加入新的内容，即有些动词在一般情况下是不用现在进行时。speaking: 提供有关的英语绕口令来进行训练。using english: 利用英语课本的 index进行实际的操练。writing: 先对图片进行讨论，通过师生问答来熟悉图片内容。more practice: 将文章作为泛读材料，训练学生寻找有效信息的能力。四 人文教育使学生认识到树木对人类的重要性。面对日益严重的环境污染问题，保护树木，植树造林无疑是一个行之有效的好方法。培养学生建立爱护树木保护环境的意识。
