1、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，廢棄物,Peopl

2、e should throw away litter in the bin.,n. 垃圾箱,noise pollution,There are more cars on the road.,noise pollution _ _ _ _,air pollution _ _ _ _,water pollution _ _ _ _,loud music,planes,mobile phones,factories,cars,smoking,ships,factories,littering,rubbish,building houses,building houses,1b,Listen and

3、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 river. 2. The river was really dirty. 3. The river has always been the nicest river in this town. 4. We should ask the teacher

4、s for help.,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 road these days. 2. Factori

5、es 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 places,What should we do

6、to save the earth?,Turn off the lights when you leave a room.,關(guān)掉,stop riding in cars,stop using paper towels or napkins（餐巾，餐巾紙）,recycle books and paper,回收利用,take, spend, pay & cost take，spend，pay和cost都可以表示“花 費(fèi)”，但它們的用法各有不同。 1) take多表示花費(fèi)時(shí)間，常用于It takes sb. some time to do sth.這一句型中，其中it作形式主語。 e.g. It u

7、sually takes me 40 minutes to cook the dinner.,2) spend多表示花費(fèi)時(shí)間和金錢，主語通常是人，常用于sb. spend(s) some time / money on sth.和sb. spend(s) some time / money (in) doing sth.兩種句型。 e.g. David spent 2,000 yuan on the new machine. My father spends an hour (in) watching the news on TV every day.,3) pay多表示花費(fèi)金錢，主語通常是人

8、，常用于sb. pay(s) some money for sth.句型。 e.g. Tommy paid 20 yuan for his breakfast yesterday. 4) cost多表示花費(fèi)金錢，主語通常是物，常用于sth. cost(s) (sb.) some money.句型。 e.g. The new dress cost Linda 88 yuan.,根據(jù)句意用take, spend, pay或cost的適當(dāng) 形式填空。 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.,cost,spent,takes,4. You should _ some time practising your pronunciation. 5. My brother _6, 000 yuan for the new computer yesterday.,spend,paid,用動(dòng)詞的適當(dāng)形式填空。 1. Were trying _ (save) the earth. 2. There used to _ (be) clean and beaut