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1、Unit 13 Were trying to save the earth!-Section A （1a-2d）【预习目标】掌握以下词汇，词组和句型基本词汇：litter, advantage, bottom, fisherman, coal, ugly, cost, wooden, plastic, takeaway, bin, shark, fin, method, cruel. Harmful, chain, ecosystem, industry, law, scientific, afford, reusable, transportation, recycle, napkin, u
2、pside, gate, bottle, president, inspiration, iron, work, metal, creativity,基本词组：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：Were trying to save the earth!The river used to be so clean.The air is badly polluted.N
3、o scientific studies have showed that shark fins are good for health.We should help save the sharks.2. 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.有环境危机意识，学会关注环境保护环境。【预习重点】Unit 13 Were trying to save the earth!-Section A （1a-2d）【预习难点】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。【课前自学】1大声朗读下面单词和句子: 基本词汇：litter,
4、 advantage, bottom, fisherman, coal, ugly, cost, wooden, plastic, takeaway, bin, shark, fin, method, cruel. Harmful, chain, ecosystem, industry, law, scientific, afford, reusable, transportation, recycle, napkin, upside, gate, bottle, president, inspiration, iron, work, metal, creativity,基本词组：be har
5、mful 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：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 sa
6、ve the sharks.2.完成书中97页-98页的练习题3.跟录音大声朗读98页2d的对话两遍，并翻译，换出不理解的地方。4.自学下面知识点1. Were trying to save the earth! 我们正在竭尽全力拯救地球!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.为了进入大学学习，每个学生都应该努力学习。2. Here are some words related to different
7、 kinds of pollution.be related to 与有关e.g.I am notrelatedtohim in any way. 我和他无任何关系。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.健康的饮食在帮助人们长寿方面起着非常大的作用。play a part 在中扮演角色e.g. He was invited to play
8、 a part in this TV play.他被邀请参加这个电视剧的演出。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”，用作不可数名词。rubbish 指“没用的东西(被扔或将要丢弃的无用的东西)”不可回收。litter 指“(室内或公共场所)乱扔的废物(纸屑.不要的包装纸.废瓶等)”还可回收e.g. Throw the rubbish out. 把垃圾扔出去。The room is
9、 full of rubbish. 房间里堆满了垃圾。Pick up your litter after a picnic. 野餐后将废弃物收拾好。1. This is turning beautiful places into ugly ones.turn into 把变成e.g. The icy rain seemed like to turn into snow.渐渐地冻雨又变成雪花的模样。2. Its good for health and it doesnt cost anything!cost v. 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.
10、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？take, spend, pay & costtake，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
11、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.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
12、 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 new dress cost Linda 88 yuan.3. 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. Do you think his words would make any difference to the fina
13、l decision?你认为他的话会对最后的决定产生影响吗？The new teacher always encourages little Tom. This has made a big difference to him.新来的老师总是鼓励小汤姆，这对他影响很大。【预习检测】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) Yo
14、u should _some time practising your pronunciation.5) My brother _6, 000 yuan for the new computer yesterday.【我的疑问】在课前自学中，你有什么疑问？请你写下来，待课堂上老师和同学共同探究解决吧！_。【合作与探究】1. 头脑风暴上节课学习的词汇与句型。2.检查97页1a,1b的学生的预习情况核对答案，解决学生预习中遇到的问题。3. Role-play the conversation in 1c.4.检查98页2a,2b的学生的预习情况核对答案，解决学生预习中遇到的问题。5. Discus
15、sionAsk students what we should do to save the earth. Help students answer, turn off thelights when you leave a room; stop riding in cars; stop using paper towels or napkins; recycle books and paper.6.阅读训练Work on 2d.Read 2d and complete the chart.ProblemsSolving problemsair pollutionwaste pollutionwooden (木头的) chopsticks or plastic forksrubbishRole-play the conversation.总结本课自己的收获，小组内交流。_【达标小检测】一、用动词的适当形式填空。1) Were trying _ (save) the earth.2) There used to_ (be) clean and beautiful.3) There are too many _ for _to catch (fish).4) Its bad for environment to use _ (wood) chopsticks.