1、Unit 13,Unit 13 Were trying to save the earth!,Section A 1 1a-2d,The earth is polluted.,Lead-in,air pollution,The factories that burn coal pollute the air with a lot of black smoke.,n. 煤炭,Factories put waste into the river.,water pollution,mobile phone pollution,litter v. 亂扔 n. 垃圾 rubbish waste 垃圾，廢

2、棄物,People should throw away litter in the bin.,n. 垃圾箱,noise pollution,There are more cars on the road.,1a,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 _ _ _ _,loud music,pl

3、anes,mobile phones,factories,cars,smoking,ships,factories,littering,rubbish,building houses,building houses,1b,Listen and complete the sentences.,really dirty,rubbish,fish,litter,waste,government,close down,clean up,Listen again and check () the sentences you hear.,1. We could go fishing in the rive

4、r. 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.,1c,Role-play the conversation,The river was dirty. Even the bottom of the river was full of rubbish.,But it used to be so clean!,Yes, but people are throwing litter i

5、nto the river.,Everyone in this town should play a part in cleaning it up!,Practice,Make conversations using the pollution in 1a.,The river has always been the nicest river in this town.,Yes, it used to be so clean.,What caused the problem?,But I was there last weekend and the river was really dirty

6、.,Factories are also putting waste into the river.,People are throwing litter into the river.,What should we do?,Yes, everyone in this town should play a part.,We should write to the government and ask them to close down the factories.,What else can we do?,Everyone should help to clean up the river.

7、,1. Were trying to save the earth! 我們正在竭盡全力拯救地球! try to do =try ones best to do 努力去做某事。 e.g. Every student should try to study hard in order to study in a university. 為了進入大學學習，每個學生都應該 努力學習。,Language points,2. Here are some words related to different kinds of pollution. be related to 與有關 e.g.I am not

8、relatedtohim in any way. 我和他無任何關系。,3. Everyone in this town should play a part in cleaning it up! play a part in 在方面起作用 e.g. A good diet plays a large part in helping people live longer. 健康的飲食在幫助人們長壽方面起著 非常大的作用。,play a part 在中扮演角色 e.g. He was invited to play a part in this TV play. 他被邀請參加這個電視劇的演出。,4

9、. 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。 rubbish指“沒用的東西(被扔或將要丟棄的無用的東西)”不可回收。,litter指“(室內(nèi)或公共場所)亂扔的廢物(紙屑、不要的包裝紙、廢瓶等)”還可回收。 e.g. Throw the rubbish out. 把垃圾扔出去。The room is full of rubbish. 房間里堆滿了垃圾。Pick up your

10、 litter after a picnic. 野餐后將廢棄物收拾好。,2a,Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.,land pollution B. air pollution C. noise pollution D. water pollution,2b,Listen again and complete the sentences.,1. The air is badly polluted because there are _ on the roa

11、d these days. 2. Factories that burn coal also _ the air with a lot of black smoke.,more cars,pollute,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.,are throwing away,public p

12、laces,Listen and answer the questions.,1. Who is the interviewer talking to? 2. What are they talking about? 3. What other problems do they see?,Susan and Jason.,The environmental problems.,Theres too much rubbish and waste in the streets.,Role-play conversations between Jason and Susan.,2c,The air

13、has become really polluted around here. Im getting very worried.,Yes, I used to be able to see stars in the sky.,The problem is that,What should we do to save the earth?,Turn off the lights when you leave a room.,關掉,stop riding in cars,stop using paper towels or napkins（餐巾，餐巾紙）,recycle books and pap

14、er,回收利用,2d,Read 2d and complete the chart.,take the bus, subway or ride a bike instead of driving.,bring a bag to go shopping.,use chopsticks or forks at home.,throw rubbish in the bins.,Role- play the conversation,Jason and Susan, what are your ideas for solving these problems?,Yeah, or ride a bike

15、. There are other advantages (優(yōu)點) of bike riding. Its good for health and it doesnt cost (花費) anything!,Well, to cut down air pollution, we should take the bus or subway instead of driving.,Great ideas! What about waste pollution?,Me, too. Also, I never take wooden chopsticks or plastic (塑料) forks w

16、hen I buy takeaway (外賣食品) food. I use the ones at home.,Mmm, I think simple things like bringing a bag to go shopping can help. I started doing that a year ago.,And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.,So together, our actions can make a diff

17、erence and lead to a better future!,This is turning beautiful places into ugly ones. turn into 把變成,e.g. The icy rain seemed like to turn into snow. 漸漸地凍雨又變成雪花的模樣。,Language points,2. Its good for health and it doesnt cost anything! cost v. 花費；使付出 指花費金錢，主語通常是物。cost的過去式和過去分詞均為cost。,e.g. The new shirt c

18、ost Mr Wang 200 yuan. 王先生花了200元買了新襯衫。 How much does the new computer cost? 新電腦花了多少錢？,take, spend, pay 其中的also有時可以省略。,e.g. She not only plays well, but also writes music. 她不但很會演奏，而且還會作曲。 Not only men but also women were chosen. 不僅僅是男的，女的也有被選中的。,若連接兩個成分作主語，其謂語通常與靠近的主語保持一致。 e.g. Not only you but also h

19、e has to leave. 不只是你，他也得離開。,not only放在句首，后接句子時要用倒裝結構。 e.g. Not only had the poor man been fined, but also he had been sent to prison. 這個可憐的人不僅被罰款，而且還被 送進了監(jiān)獄。,be harmful to 對有害 e.g. Smoking is harmful to the health. 吸煙有害健康。 Playing computer games much is harmful to students. 電腦游戲玩太多對學生有害。,3. Sharks a

20、re at the top of the food chain in the oceans ecosystem. 鯊魚位于海洋生物系統(tǒng)食物鏈的頂部。,at the top of 在最高地位; 用最高最大的(速度, 聲音等) e.g. I looked at the top of his head, his hair shiny and parted smoothly. 我看他的頭頂, 頭發(fā)閃亮且平滑的分 開。,He shouted at the top of his voice in order that he might be heard. 他盡力大聲叫喊, 以便別人能聽見。,4. If their numbers drop too low, it will bring danger to all ocean life. 如果它們的數(shù)目降至過低，會給所有 海洋生物帶來危險。 此句復數(shù)形式的numbers表達全海洋中鯊 魚的總量。當表示數(shù)值的高或低時，number要用high或low修飾。,e.g. In that country, the number of childr