1、Unit 13 Were trying to save the earth! SectionA 2a-2d 一、一、教学目标教学目标： 1. 语言知识目标语言知识目标 基本词汇基本词汇： coal, ugly, cost, wooden, plastic, takeaway, bin, shark, fin, 基本词基本词组组： be harmful to, at the top(of sth.), take part in, turn off, take action, throw away, put sth. to good use, pull down, bring back 基本句型基
2、本句型：Were trying to save the earth! The river used to be so clean. The air is badly polluted. No scientific studies have showed that shark fins are good for health. We should help save the sharks. 2. 技能目标技能目标: 能正确运用现在进行时，现在完成时，被动语态，情态动词和 used to 句型。 3. 情感目标情感目标: 有环境危机意识，学会关注环境保护环境。 二、二、教学重教学重难难点点： 1.
3、 教学重点： （1）能正确运用现在进行时，现在完成时，被动语态，情态动词 和 used to 句型。 （2）保护环境的措施方法。 2. 教学难点：能正确运用现在进行时，现在完成时，被动语态，情态动词和 used to 句型。 三、教学过程三、教学过程 I. Listening 1. Work on 2a. Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about. A. land pollutionB. air pollution C. noise pollutionD. wat
4、er pollution 2. Work on 2b. Listen again and complete 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 al
5、so littering in _ like parks. This is turning beautiful places into ugly (丑陋) ones. II. Practice (Work on 2c) Use the information in 2a and 2b to role-play conversations between Jason and Susan. Jason: The air has become really polluted around here. Im getting very worried. Susan: Yes, I used to be
6、able to see stars in the sky. Jason: The problem is that III. Discussion Ask students what we should do to save the earth. Help students answer, turn off the lights when you leave a room; stop riding in cars; stop using paper towels or napkins; recycle books and paper. IV. Reading 1. Read 2d and com
7、plete the chart. ProblemsSolving problems air pollution waste pollution wooden (木头的) chopsticks or plastic forks rubbish 2. Role-play the conversation. Interviewer: Jason and Susan, what are your ideas for solving these problems? Jason: Well, to cut down air pollution, we should take the bus or subw
8、ay instead of driving. Susan: Yeah, or ride a bike. There are other advantages (优点) of bike riding. Its good for health and it doesnt cost (花费) anything! Interviewer: Great ideas! What about waste pollution? Susan: Mmm, I think simple things like bringing a bag to go shopping can help. I started doi
9、ng that a year ago. Jason: Me, too. Also, I never take wooden chopsticks or plastic (塑料) forks when I buy takeaway (外卖食品) food. I use the ones at home. Susan: And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone. Interviewer: So together, our actions can
10、make a difference and lead to a better future! V. Language points 1. Its good for health and it doesnt cost anything! costv. 花费；使付出 指花费金钱，主语通常是物。cost 的过去式和过去分词均为 cost。 e.g. The new shirt cost Mr Wang 200 yuan.王先生花了 200 元买了新衬衫。 How much does the new computer cost?新电脑花了多少钱？ 辨析 take, spend, pay & cost
11、take，spend，pay 和 cost 都可以表示“花费”，但它们的用法各有不同。 1) take 多表示花费时间，常用于 It takes sb. some time to do sth.这一句型中，其 中 it 作形式主语。 e.g. It usually takes me 40 minutes to cook the dinner. 2) spend 多表示花费时间和金钱， 主语通常是人， 常用于 sb. spend(s) some time / money on sth.和 sb. spend(s) some time / money (in) doing sth.两种句型。 e.
12、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 多表示花费金钱，主语通常是人，常用于 sb. pay(s) some money for sth. 句型。 e.g. Tommy paid 20 yuan for his breakfast yesterday. 4) cost 多表示花费金钱， 主语通常是物， 常用于 sth. cost(s) (sb.) some money. 句 型。 e.g. The n
13、ew dress cost Linda 80 yuan. 根据句意用 take, spend, pay 或 cost 的适当形式填空。 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. 4) You should _ some time practising your pronunciation. 5) My brother _ 6, 000 yuan for the new computer y
14、esterday. 2. So together, our actions can make a difference and lead to a better future! make a difference (to)表示(对)产生影响或作用 e.g. Learning English well can make a difference to your future. 学好英语会对你的前途有影响。 VI. Think about The earth is badly polluted. Please make a poster and think of what we can do. VII. Homework 1. Copy the new words and remember them. 2. Read the listening materials of 1b, 2a. 教学反思：教学反思：
