【正文】 例如： uneconomic 不經(jīng)濟(jì)的 unfortable 不舒服的 unending 無盡的 unfortunate 不幸的 unusual 不平常的 unkind 不仁慈的 unbind 解開，釋放 uncover 揭開 …… 的蓋子 unearth 由地下掘出 unbutton 解開鈕扣 3. Nothing is a waste if you have a creative mind. ive 是形容詞后綴 一般表示有 ......的 create ﹢ ive = creative 4. Amy recently won a prize from the Help Save Our Pla Society. recent ﹢ ly = recently 形容詞加 ly 變副詞 5. Amy is an inspiration ( ) to us all. 后綴 tion 附在動詞后面構(gòu)成名詞 1)當(dāng)單詞最后是 t, d, te, de 時，變名詞加 tion 或者 ation, ition； 2)當(dāng)單詞最后是元音字母時，變名詞加 sion 等。 creativity inspire – inspiration 1. Rethink, Reuse, Recycle ! re是最常用的前綴之一。例如： Not only did my aunt teach at school, but (also) she wrote articles for newspapers. 我阿姨不僅在學(xué)校教書而且還給報紙寫稿。 be made of 常常表示原材料未發(fā)生化學(xué)變化，從成品中仍可看出原材料；而 be made from常常表示原材料經(jīng)過化學(xué)變化，從成品中看不出原材料。 3) 浪費(fèi) (時間、金錢等 )亂花 (錢等 ) . It will be time and money thrown away. 這將是浪費(fèi)時間和金錢。 Stop riding in cars。 turn off the lights when you leave a room。 結(jié)構(gòu)： be + 過去分詞 . A new school was built last year. Our classroom is cleaned every day. 4. 現(xiàn)在完成時 : Present Perfect 定義：表示動作已經(jīng)完成 , 但對現(xiàn)在造成影響 。 VII. Homework Write 5 measures to protect the environment. Section A 3 (Grammar Focus4c) I. Revision 1. Check if you know these phrases. ① 不同種類的污染 ② 河底 ③ 把垃圾扔到河里 ④ 在 … 中起作用 ⑤ 在中國南部 ⑥ 對 …… 有害 ⑦ 在 …… 頂部 ⑧ 海洋生態(tài)系統(tǒng) 2. Translate these sentences into English. ① 甚至是河底都滿是垃圾。當(dāng)表示數(shù)值的高或低時， number要用high 或 low 修飾。 be harmful to 對 … 有害 . Smoking is harmful to the health. 吸煙有損健康。 not only…but also… 用于連接兩個表示并列關(guān)系的成分，著重強(qiáng)調(diào)后者，其意為 “不僅 … … 而且 ……”。 no longer 意思是 “不再 ” . I’m no longer a student. 我不再是個學(xué)生了。 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 ……) 產(chǎn)生影響或作用 . Do you think his words would make any difference to the final decision? 你認(rèn)為他的話會對最后的決定產(chǎn)生影響嗎？ The new teacher always encourages little Tom. This has made a big difference to him. 新來的老師總是鼓勵小湯姆，這對他影響很大。 . The new shirt cost Mr Wang 200 yuan. 王先生花了 200 元買了新襯衫。 The room is full of rubbish. 房間里堆滿了垃圾。三、 教學(xué)步驟 : Section A 1 (1a2d) I. Presentation Show the picture of the earth and tell students the earth is polluted now. For example: (1) The factories that burn coal pollute the air with a lot of black smoke. (2) Factories put waste into the river. (3) People should throw away litter in the bin. (4)There are more cars on the road. II. Learning Here are some words related to different kinds of pollution. Write them in the box below. Then add more words. ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????noise pollution air pollution water pollution ____________ ___________ _____________ ____________ ___________ _____________ ____________ ___________ _____________ ____________ ___________ _____________ Keys : noise pollution loud music planes mobile phones building houses air pollution factories smoking cars building houses water pollution ships rubbish littering factories III. Listening 1. 1b Listen and plete the sentences. ???????????????????????????????????????????????????????????????????? 底部??????????????????????????????????????????????????????????????????????????????漁民 ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????Keys: really dirty rubbish fish litter waste government close down clean up 2. Listen again and check (√ ) the sentences you hear. 1) We could go fishing in the river. 2) The river was really dirty. 3) The river has always been the nicest river in this town. 4) We should ask the teachers for help. Keys: 2 3 IV. Practice 1. Roleplay the conversation in 1c. Mark: The river was dirty. Even the bottom of the river was full of rubbish. Tony: But it used to be so clean! Mark: Yes, but people are throwing litter into the river. Tony: Everyone in this town should play a part in cleaning it up! 2. Make conversations using the pollution in 1a. A: The river has always been the nicest river in this town. B: Yes, it used to be so 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。 二、 教學(xué)重 難 點(diǎn) ： 1. 教學(xué)重點(diǎn)：（ 1） 能 正確運(yùn)用現(xiàn)在進(jìn)行時，現(xiàn)在完成時，被動語態(tài)，情態(tài)動詞和 used to 句型。 4. Even the bottom of the river was full of rubbish. Yes, but people are throwing litter into the river. litter 和 rubbish 都可指 “垃圾 ”，用作不可數(shù)名詞。 recycle books and paper. IX. Reading 1. Read 2d and plete the chart. Problems Solving problems air pollution waste pollution wooden (木頭的 ) chopsticks or plastic forks rubbish 2. Roleplay the conversation. Interviewer: Jason and Susan, what are your ideas for solving