2022年八年级英语pollutionfighters教案

1、学习必备欢迎下载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 1average ages 平均年龄2magnolia trees 白玉兰树3sweet-smelling flowers 气味芬芳的花朵4be known as. 被誉为5collect some

2、facts for. 为.收集一些事实材料6a class project on pollution 一个有关污染的班级实践项目7interview sb. about sth. 就有关 .采访某人8be interested in (doing) sth. 对 .感兴趣9living 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 co

3、nditioners 天然空调16 harmful gas 有害气体17 take from把.从.中拿走18 release into释放 .进入精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 1 页，共 5 页 - - - - - - - - -学习必备欢迎下载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)

4、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 h

5、ardly 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

6、2 living a. alive now 有生命的作定语e.g. hes the world s most famous living artist. 他是世界上最著名的仍然健在的艺术家。精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 2 页，共 5 页 - - - - - - - - -学习必备欢迎下载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.

7、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

8、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. kee

9、p 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

10、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. 精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 3 页，共

11、5 页 - - - - - - - - -学习必备欢迎下载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

12、. 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

13、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。精品学习资料 可选择p d f - - - - - - - - - - - - - - 第 4 页，共 5 页 - - - - - - - - -学习必备欢迎下载iv. rewrite

14、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 th