1、chapter 2 pollution fighters 一 learning aims: 1通過閱讀，了解樹木對(duì)于環(huán)境的作用。 2學(xué)會(huì)查閱書籍的目錄。二 main phrases:wordschemical communicate nasty natural oxygen pure release hectare suppose warn hardly sipphrases1average ages 平均年齡2magnolia trees 白玉蘭樹3sweet-smelling flowers 氣味芬芳的花朵4be known as. 被譽(yù)為5collect some facts for.

2、為.收集一些事實(shí)材料6a class project on pollution 一個(gè)有關(guān)污染的班級(jí)實(shí)踐項(xiàng)目7interview sb. about sth. 就有關(guān).采訪某人8be interested in (doing) sth. 對(duì).感興趣9living things 生物10make.less noisy 減少.的噪音11on the end of . 在.頂端12sip a coke 小口地喝些可樂13breathe pure air 呼吸純凈的空氣14thank.for (doing) sth. 為.而感謝某人15natural air conditioners 天然空調(diào)16har

3、mful gas 有害氣體17take from 把.從.中拿走18release into 釋放.進(jìn)入19one and a half hectares of trees 一公頃半的樹林20produce enough oxygen 產(chǎn)生足夠的氧氣21keep alive 使.存活22as well as 也,同樣23for example 例如24warn sb (not) to do sth 告戒某人(不要)做某事 25warn sb. of sth. 預(yù)告/ 預(yù)先通知某人某事26protect oneself by doing sth. 通過.保護(hù)自己27produce a chemi

4、cal 產(chǎn)生一種化學(xué)物質(zhì)28make do sth. 使某人做某事29taste nasty 嘗起來(lái)令人作嘔的30join together 把.連在一起31pass around 傳遞.32communicate with sb. 和.交流/ 交際33one another = each other 互相34in danger 處于危險(xiǎn)中35hardly any = almost no 幾乎沒有36our best fighters against pollution 我們最好的反污染衛(wèi)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 作定語(yǔ) e.g. hes the worlds most famous living artist. 他是世界上最著名的仍然健在的藝術(shù)家。 alive a. living; not dead 活著的 做表語(yǔ)

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. 使某人或某物變得。 e.g. the news made him very happy. 這條消息使他很高興。 make sb. /sth. do sth. 讓某人做某事 e.g. my mother made me wash the dishes after dinner. 媽媽讓我吃飯后洗衣服。 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. 原級(jí) 位于形容詞或副詞前與more + 形容詞或副詞及加 er 構(gòu)成的比較級(jí)意思相反 noisy a. noisily adv. 5. at the end of 在 。的盡頭 at the beginning of 在 。 的 開始 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. 呼吸的空氣 7ke

8、ep sb./sth. + adj. 使 。 保持某種狀態(tài) e.g. an air-conditioner can kept the room clean. keep 可作系動(dòng)詞，后面直接加形容詞四 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 對(duì) 感興趣 2 樹木有什么好處？

12、 3 釋放氧氣到空氣里 4 在危險(xiǎn)中 5 從空氣中除去有還氣體 6 喝口咖啡 7 把 連在一起 8 互相交流 9 對(duì)付污染 10 砍倒iii. translate the following phrases into english; 1. 警方正在用無(wú)線電聯(lián)系。 2 農(nóng)民用一種化學(xué)產(chǎn)品殺滅田里的害蟲。 3 律師要求警方立即釋放他的客戶。 4 這個(gè)新的公園戰(zhàn)地60公頃。 5 我必須警告你不要出去，暴風(fēng)雨要來(lái)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