【正文】 clean. A: But I was there last weekend and the river was really dirty. B: What caused the problem? A: People are throwing litter into the river. B: What should we do? A: Factories are also putting waste into the river. B: Yes, everyone in this town should play a part. A: We should write to the government and ask them to close down the factories. B: What else can we do? A: Everyone should help to clean up the river. V. Language points 1. We’re trying to save the earth! 我們正在竭盡全力拯救地球 ! try to do =try one’s best to do 努力去做某事。 2. Here are some words related to different kinds of pollution. be related to 與 … 有關(guān) . I am not related to him in any way. 我和他無(wú)任何關(guān)系。 play a part 在 …… 中扮演 角色 . He was invited to play a part in this TV play. 他被邀請(qǐng)參加這個(gè)電視劇的演出。 rubbish 指 “沒(méi)用的東西 (被扔或?qū)⒁獊G棄的無(wú)用的東西 )”不 可回收。 The room is full of rubbish. 房間里堆滿(mǎn)了垃圾。 VI. Listening 1. 2a Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about. A. land pollution B. air pollution C. noise pollution D. water pollution Keys: B A 2. 2b Listen again and plete the sentences. 1) The air is badly polluted because there are ___________ on the road these days. 2) Factories that burn coal also ________ the air with a lot of black smoke. 3) There is also too much rubbish and waste. People _________________ things every day. 4) People are also littering in ______________ like parks. This is turning beautiful places into ugly (丑陋 ) ones. Keys: more cars pollute are throwing away public places 3. Listen and answer the questions. 1) Who is the interviewer talking to? 2) What are they talking? 3) What other problems do they see? Keys: Susan and Jason. The environmental problems. There’s too much rubbish and waste in the streets. VII. Practice (2c) Use the information in 2a and 2b to roleplay conversations between Jason and Susan. Jason: The air has bee really polluted around here. I’m getting very worried. Susan: Yes, I used to be able to see stars in the sky. Jason: The problem is that… VIII. Discussion Ask students what we should do to save the earth. Help students answer, turn off the lights when you leave a room。 stop using paper towels or napkins。 2. It’s good for health and it doesn’t cost anything! cost v. 花費(fèi)；使付出 指花費(fèi)金錢(qián)，主語(yǔ)通常是物。 . The new shirt cost Mr Wang 200 yuan. 王先生花了 200 元買(mǎi)了新襯衫。 cost take， spend， pay 和 cost 都可以表示 “花費(fèi) ”，但它們的用法各有不同。 . It usually takes me 40 minutes to cook the dinner. 2) spend 多表示花費(fèi)時(shí)間和金錢(qián)，主語(yǔ)通常是人，常用于 sb. spend(s) some time / money on sb. spend(s) some time / money (in) doing 。 . Tommy paid 20 yuan for his breakfast yesterday. 4) cost 多表示花費(fèi)金錢(qián)，主語(yǔ)通常是物，常用于 sth. cost(s) (sb.) some money. 句型 。 1) That new car ________ them lots of money. 2) Mona __________ 50 yuan on the books just now. 3) It usually _______ me an hour to do my homework. 4) You should __________ some time practising your pronunciation. 5) My brother _______ 6, 000 yuan for the new puter yesterday. Keys cost spent takes spend paid 3. So together, our actions can make a difference and lead to a better future! make a difference (to…) 表示 (對(duì) ……) 產(chǎn)生影響或作用 . Do you think his words would make any difference to the final decision? 你認(rèn)為他的話會(huì)對(duì)最后的決定產(chǎn)生影響嗎？ The new teacher always encourages little Tom. This has made a big difference to him. 新來(lái)的老師總是鼓勵(lì)小湯姆，這對(duì)他影響很大。 1) We’re trying _______ (save) the earth. 2) There used to_____ (be) clean and beautiful. 3) There are too many ______ for ________to catch (fish). 4) It’s bad for environment to use _________ (wood) chopsticks. Keys: to save be fish fishermen wooden XII. Think about The earth is badly polluted. Please make a poster and think of what we can do. XIII. Homework 1. Copy the new words and remember them. 2. Read the listening materials of 1b, 2a. Section A 2 (3a3c) I. Revision (1) Roleplay 2d. (2) Translate these sentences into English. ① 甚至是河底都滿(mǎn)是垃圾。 ③ 騎自行車(chē)有其它的優(yōu)點(diǎn)。 II. Lead in (1) Teacher tells students the earth is badly polluted. What should we do to save the earth? Let’s take action. For example: ① Turn off the lights when you leave a room。 no longer 意思是 “不再 ” . I’m no longer a student. 我不再是個(gè)學(xué)生了。 no longer 和 not…any longer 側(cè)重時(shí)間。 (一個(gè)時(shí)間以前他住在這兒，過(guò)了這個(gè)時(shí)間，他就離開(kāi) 了。 (喝酒的量到了一定程度，不能再繼續(xù)下去了。 not only…but also… 用于連接兩個(gè)表示并列關(guān)系的成分，著重強(qiáng)調(diào)后者，其意為 “不僅 … … 而且 ……”。 . 1) She not only plays well, but also writes music. 她不僅很會(huì)演奏，而且還會(huì)作曲。 若連接兩個(gè)成分作主語(yǔ)，其謂語(yǔ)通常與靠近的主語(yǔ)保持一致。 not only 放在句首，后接句子時(shí)要用倒裝結(jié)構(gòu)。 be harmful to 對(duì) … 有害 . Smoking is harmful to the health. 吸煙有損健康。 3. Sharks are at the top of the food chain in the ocean’s ecosystem. 鯊魚(yú)位于海洋生物系統(tǒng)食物鏈的頂部。 用最高 [最大 ]的 (速度 , 聲音等 ) . I looked at the top of his head, his hair shiny and parted smoothly. 我看他的頭頂 , 頭發(fā)光亮 , 分得平滑。 4. If their numbers drop too low, it will bring danger to all ocean life. 如果它們的數(shù)目降至過(guò)低，會(huì)給所有海洋生物帶來(lái)危險(xiǎn)。當(dāng)表示數(shù)值的高或低時(shí)， number要用high 或 low 修飾。 常與 number 搭配的動(dòng)詞有 grow, fall等。 5. Environment protection groups around the world, such as WildAid and the WWF, are teaching the public about “finning”. 世界各地的環(huán)境保護(hù)組織，如野生救援協(xié)會(huì)和世界自然基金會(huì)，都在教育公眾有關(guān) “獵翅 ”的行為。此句中的 finning 由動(dòng)詞化的 fin（割鯊魚(yú)鰭以獲取魚(yú)翅）的 ing形式轉(zhuǎn)化而成，指課文中所陳述的 “獵翅 ”這一行為 。 VII. Homework Write 5 measures to protect the environment. Section A 3 (Grammar Focus4c) I. Revision 1. Check if you know these phrases. ① 不同種類(lèi)的污染 ② 河底 ③ 把垃圾扔到河里 ④ 在 … 中起作用 ⑤ 在中國(guó)南部 ⑥ 對(duì) …… 有害 ⑦ 在 …… 頂部 ⑧ 海洋生態(tài)系統(tǒng) 2. Translate these sentences into English. ① 甚至是河底都滿(mǎn)是垃圾。 ③ 鯊魚(yú)處于海 洋食物鏈的頂部。 II. Grammar Focus Pay attention to the sentences. 1) We’re trying to save the earth. 2) The river used to be so clean. 3) The air is badly polluted. 4) No scientific studies have shown that