牛津上海版英语八下Chapter2PollutionFightersword重难点解析

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:wordschemical communicate nasty natural oxygen pure release hectare suppose warn hardly sipphrases1average 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 facts for.

2、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10make.less noisy 减少.的噪音11on the end of . 在.顶端12sip a coke 小口地喝些可乐13breathe pure air 呼吸纯净的空气14thank.for (doing) sth. 为.而感谢某人15natural air conditioners 天然空调16har

3、mful gas 有害气体17take from 把.从.中拿走18release into 释放.进入19one and a half hectares of trees 一公顷半的树林20produce enough oxygen 产生足够的氧气21keep alive 使.存活22as well as 也,同样23for example 例如24warn sb (not) to do sth 告戒某人(不要)做某事 25warn sb. of sth. 预告/ 预先通知某人某事26protect oneself by doing sth. 通过.保护自己27produce a chemi

4、cal 产生一种化学物质28make do sth. 使某人做某事29taste nasty 尝起来令人作呕的30join together 把.连在一起31pass around 传递.32communicate with sb. 和.交流/ 交际33one another = each other 互相34in danger 处于危险中35hardly any = almost no 几乎没有36our best fighters against pollution 我们最好的反污染卫士 sentence patterns1. trees cool the air as well as c

5、lean it2. they make streets more beautiful and less noisy.3. trees are communicating with one another.三 language points : 1on 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. hes the worlds 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

6、 e.g. i didnt 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

7、。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 6breathe 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 7ke

8、ep 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 _ comput

9、er 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. wont rain c. doesnt rain d. isnt rain( ) 5.i _ the hobby group three months ago and i _ the

10、 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. its too cold outside, please _ your coat. a. put on b. wear c. putting on d. wearing( ) 8. jenny enjoys _. a. go fish

11、ing 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. forii. translate the following phrases into english; 1 对 感兴趣 2 树木有什么好处？

12、 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