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，明白树木对于环境的作用；2学会查阅书籍的目录；二 main phrases:wordschemicalcommunicatenastynaturaloxygenpurereleasehectaresupposewarnhardlysipphrases1 average ages平均年龄2 magnolia trees白玉兰树3 sweet-smelling flowers气味芳香的花朵4 be known as.被誉为5 collect some facts for.为.收集一

2、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 .感爱好 9 living things生物10 make.less noisy削减 .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呼吸纯洁的空气 14 thank.for doing sth.为.而感谢某人15 natural air conditioners自然空调16 har

3、mful gas有害气体17 takefrom把.从.中拿走18 releaseinto释放 .进入学习必备欢迎下载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 keepalive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.预报 / 预先通知某人某事26 protect oneself by doing sth.通过 .爱护自己 27 produce

4、 a chemical产生一种化学物质 28 makedo sth.使某人做某事29 taste nasty尝起来令人作呕的30 jointogether把.连在一起31 passaround传递 . 32 communicate with sb.和.沟通 / 交际 33 one another = each other相互34 in danger处于危急中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 patterns1. trees cool the air as w

5、ell 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 livinga.alive now有生命的作定语e.g. he s the world s most famous living artist.他是世界上最闻名的仍旧健在的艺术家；学习必备欢迎下载alivea.living; not dead活

6、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；3make 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.这条消息使他很兴奋；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

7、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noisya.noisilyadv.5. at the end of在 ；的终点at the beginning of在 ； 的 开头6 breathev. to take air into your lungs and send it out again through your nose or mouth breathe in吸入breathe out呼出breathn. 呼吸的空气7 keep sb./sth. + adj.使 ； 保持某种状态

8、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. listenb. to listenc. listeningd. listened 2. after having his meal, jack continued computer games.a. playsb. to playc. playingd. playe

9、d 3. mrs. li goes to her son from school every afternoon.a. meetb. seec. visitd. collect 4. if it tomorrow, we will have a picnic.a. not rainb . won t rainc. doesn t raind. isn t rain 5.i the hobby group three months ago and i the meeting every monday.学习必备欢迎下载a. took part in; joinb. entered for, tak

10、e part inc. joined, attendd. attended, enter 6. may is keen on .a. danceb. dancedc. dancingd. to dance 7. it s too cold outside, please your coat.a. put onb. wearc. putting ond. wearing 8. jenny enjoys .a. go fishingb. going fishingc. to go fishingd. goes fishing 9. yesterday, i went to school a tax

11、i because i got up late.a. byb. onc. withd. in 10. trees can protect themselves producing a chemical.a. fromb. byc. ofd. forii. translate the following phrases into english;1 对感爱好2 树木有什么好处？3 释放氧气到空气里4 在危急中5 从空气中除去有仍气体6 喝口咖啡7 把连在一起8 相互沟通9 应付污染10 砍倒iii. translate the following phrases into english;1.

12、警方正在用无线电联系；2 农夫用一种化学产品杀灭田里的害虫；3 律师要求警方立刻释放他的客户；4 这个新的公园战地60 公顷；5 我必需警告你不要出去，暴风雨要来了；学习必备欢迎下载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） t