《Language in use》Save our world PPT课件Teaching aims:知识目标：To master some words and expressions about save our world:factory, pollute, recycle, waste, enemy, crop, kill, oil, less, such as, hopeless… 能力目标：1.To understand passages about pollution .2. to learn to say why we need to save the world and how to be green.... ... ...New wordspollute v. 污染factory n. 制造厂; 工厂waste n. 废料; 废弃物recycle v. 回收利用, 再使用(废品)crop n. 庄稼; 作物enemy n. 敌人; 仇人oil n. 石油kill v. 杀死; 弄死... ... ...What causes pollution ?1.Pollution from factories spreads over cities and villages.If the rivers are polluted, farmers can’t use them to water their crops .2.In some places, pollution from factories spreads over cities and villages3.The cars on the roads use so much oil and cause pollution .What can students do ?1.every class collects waste which can be recycled or used again .Then the school sells the waste to help students.2. Order food that you can finish.3. Use less electricity at home.4. Learn ways to recycle rubbish.5. Divide rubbish into different groups.6. Use paper cups and paper bags.7.Go to school on foot or by bike.8. Do not throw away things made of glass, plastic and paper, but recycle them when possible.9. Turn off lights when you do not need them.10. Take a bag when you go shopping in stead of asking for a plastic bag.11. Use things for as long as possible.... ... ...language points1. We throw tons of rubbish away each year, and we have to make a change.ton n. 吨tons of 许多, 很多e.g 我们为今晚的聚会买了大量饮料。We’ve bought tons of drinks for the party tonight.throw away 扔掉; 丢弃e.g. When are you going to throw away those old magazines?你打算什么时候扔掉那些旧杂志.他已经失去了一个良好的机会。He has thrown away a good chance2. Repeat these three words daily: reduce, reuse and recycle.repeat v. 重说; 重新做前缀“re-”, 意思是“再, 重复”e.g. I repeated after the teacher word by word.我跟着老师一个字一个字地读。3. Although it takes energy to change things into something else, it is better than throwing things away or burning them.change … into …把……变成……e.g. You can’t change iron into gold.你无法把铁变成金子。4. We cannot hope for rapid change, but let’s take these simple steps today …take steps 采取措施e.g.我们需要采取一些措施了减少污染。We need to take some steps to reduce pollution... ... ...构词法1.合成法将两个或两个以上独立且语义不同的单词合在一起构成新词的方法叫做合成法。合成法是一种比较灵活的构词方法，可以合成名词、形容词、副词、代词、动词等。例如：afternoon, sportsman, blackboard, sportsperson, newspaper,2. 派生法通过在词根前面加前缀或在词根后面加后缀构成一个新词的方法叫作派生法。要通过派生法理解和记忆单词, 我们需要掌握常见的前缀和后缀及派生规律。3. 转化法英语构词法中把一种词性转化为另一种词性而词形不变的方法称作转化法。常见的转化有：(1) 动词转化为名词— Let’s talk about it more.咱们再谈谈这件事吧。— I think we’d better finish the talk now.我想我们最好现在结束谈话。(2) 名词转化为动词She gave me a cup of water.她给了我一杯水。You should water the flowers twice a day.你应该每天给这些花浇两次水。... ... ...ExercisesComplete the sentences with the words in the box.hopeful impossible reuse unhealthy wasteful1. Polluted water is _________.2. It is _______ to throw so much food away.3. If you look after things well, you may _______ some of them later.4. It is ________ to clean up the whole river in such a short time.5. If we pay attention to pollution now, the future will be ________.Complete the sentences with the correct form of the words in Activity 3.She was hopeful that her new job would make her more successful.1. The factory _______ the river, and the fish died.2. We often walk in the countryside. It is a(n) _______ activity for us.3. Do not use so much water. It is very _________.4. To keep the flowers growing, you need to _______ them once a day.... ... ...ListeningListen and check (√) the true sentences.1. It is OK to throw used things away. Looking after them takes a lot of time.2. Do not throw away things made of glass, plastic and paper, but recycle them when possible.3. Take a bag when you go shopping.DiscussionDiscuss your subject.Take turns to say what you think about the problem and what can be done.关键词：《Language in use》教学课件，外研版九年级上册英语课件，九年级英语幻灯片课件下载，《Language in use》PPT课件下载，.ppt格式 本作品中主体文字及图片可替换修改，文字修改可直接点击文本框进行编辑，图片更改可选中图片后单击鼠标右键选择更换图片，也可根据自身需求增加和删除作品中的内容，源文件无水印。如认为该内容涉嫌侵权，可通过邮件提出书面通知，我们将及时处理。