1、Unit 13 Were trying to save the earth! Section A,Teaching and learning Goals:,一、功能： 能谈论环境污染和环境保护问题(Talk about pollution and environment protection) 二、词汇和常用表达： 1.能正确使用下列词汇 shark fin cruel harmful at the top of chain industry law scientific afford reusable transportation 2.能正确使用下列常用表达 be harmful to ,
2、at top of ,the food chain ,take part in , cant afford to do ,turn off , pay for , take action. 三、文化知识：了解环境污染问题和如何保护环境（Understand the environmental problems and how to protect the environment）,Do you like animals? Do you know the shark? Do you know why the people killed the sharks? Do you hear about
3、the shark fin soup? Now many sharks are killed for this kind of soup. Sharks are fewer and fewer. What should we do? Lets come to 3a.,Lead in,The general idea of the article is about_. A. air pollution B. the sharks C. water pollution,Read for the general idea of 3a.,B,3a.Read the passage about shar
4、ks and complete the fact sheet below.,In Southern China.,Around 70 million.,Over 90 percent.,WildAid and the WWF.,3b. Read the passage again and fill in the blanks with the words in the box.,1. Many people do not realize they are killing a whole shark _they enjoy a bowl of shark fin soup. 2. Sharks
5、are at the top of the food chain, _if their numbers drop, the oceans ecosystem will be in danger. 3. Many think that sharks are too strong to be endangered, _they are wrong. 4. _there are no scientific studies to support this, a lot of people believe that shark fins are good for health. 5. Sharks ma
6、y disappear one day_ we do not do something to stop the sale of shark fins.,when,so,but,Although,if,Retell the passage according to the key wordsin the form below.,Many _ _ of shark fin soup. This famous and expensive dish is especially popular in _China. But do you realize that youre killing a whol
7、e shark each time you enjoy a bowl of shark fin soup? When people catch sharks, they cut off their fins and throw the shark back into the ocean. This is not only cruel,but also harmful to the environment._ a fin, a shark can no longer swim and slowly_. Sharks are at the top of the food chain in the
8、oceans ecosystem. If their _drop too low, it will bring _to all ocean life.Many believe that sharks can never be _because they are the strongest in their food chain. But in fact, around 70 million sharks _ _and traded in this industry every year. The numbers of some kinds of sharks _ _by over 90 per
9、cent in the last 20 to 30 years.Environmental protection groups around the world, such as WildAid and the WWF, are teaching the public about “finning”. They have even asked governments to develop laws to stop the sale of shark fins. So far, no scientific studies _ _that shark fins are good for healt
10、h, so why eat them? Help save the sharks!,Save the Sharks!,Complete the passage without looking at your book.,答案 have heard, southern, Without, dies, numbers, danger, endangered, are caught, have fallen, have shown,Grammar Focus,4a.Fill in the blanks with the correct forms of the verbs in brackets.,
11、Joe: _you ever_ (take) part in an environmental project? Ken: Yes, I have. I_ (help) with a Clean-Up Day last year. It was_ (consider) the biggest clean-up project this city_ ever_ (have). Joe: How many people_ (take) part? Ken: I _(think) more than 1,000 people _(come) to help out. Joe: Thats fanta
12、stic! I guess everyone in this city is_ (try) to improve the environment. Ken: Yes, we cant afford to _(wait) any longer to take action!,Have,taken,think,helped,considered,has,had,took,came,trying,wait,4b. Fill in the blanks with the appropriate modal verbs from the box.,People_ think that big thing
13、s _be done to save the earth. Many forget that saving the earth begins with small things. For example, you _save electricity by turning off the lights when you leave a room. You _also use reusable bags instead of plastic bags. I think its a great idea that you now _pay for plastic bags in some store
14、s. And instead of driving to school or work, you_ ride your bike or walk. If its far, you_ take the bus. All these small things _add up and become big things that_ improve the environment. Lets take action now!,may/might,must/should,can,can/could,have to,could,can,should,would,探究一 used to的用法 【语境领悟】
15、仔细观察例句, 体会句中use的形式变化及用法。 1. The river used to be so clean! 2. You didnt use to eat chips when you were younger. 3. Did you use to play the piano? 4. He used to drink, didnt he? 【知识构建】 used to是固定结构, 是一般过去时的一种形式, 后面跟_。used to do意为“_”, 表示过去的习惯动作或状态, 现在已不发生或不存在, 否定形式为:_, 一般疑问句形式为_ 反意疑问句用didnt. . . ?,动词原
16、形,过去常常做,didnt use to,Did sb. use to do. . .?,【归纳拓展】 和used to do结构相似的表达还有be/get/become used to doing和be used to do。 (1)be/get/become used to doing意为“_”。 My grandfather is used to _(go) for a walk after dinner. 我爷爷习惯晚饭后去散步。 (2)be used to do意为“被用来做”, 是被动语态, 相当于be used for doing。 Wood can be used _(make
17、) paper. 木头能用来造纸。,习惯于做,going,to make,探究二 现在完成时 【语境领悟】 仔细观察例句, 体会句中动词的变化及所用的时态。 1. No scientific studies have shown that shark fins are good for health. 2. Mary has been ill for three days. 【知识构建】现在完成时的用法: 1. 表示过去发生或已经完成的动作对现在造成的影响或结果。2. 表示从过去已经开始, 一直持续到现在的动作或状态。时间状语: already, yet, never, for+时间状语, s
18、ince+表过去的时间点等。I _ already _ my homework. 我已经做完我的家庭作业了。,have finished,Practice,I. 根据句意及首字母或汉语提示完成单词。(5分) 1. Plastic bags are h to the environment. 2. Maybe you fear that they wont be able to find the solutions to the problem of air p_. 3. The government should make some l to protect the environment.
19、4. The car (工业)is important for the development of the old city. 5. He used the （科学的） method to achieve his dream.,答案：1. harmful 2. pollution 3. laws 4. industry 5. scientific,II.完成句子(10分) 1. 旧课本不应该被扔掉, 可能在以后的生活中是有用的。 Old textbooks shouldnt be . Maybe they are useful in your later life. 2. (2014盐城中考
20、)我爸爸过去常常开车上班, 现在坐公交车了。_ _ 3. (2014云南中考) Im trying to sleep. Would you mind_ _(调低)the music? 4.我反对你的计划。(against)_ 5.你们学校学生的数是多少？（number）_,Whats the number of the students in your school?,thrown away,My father used to go to work by car, but now he takes the bus.,turning down,Im against your idea.,Homework1. Read and write the new words and expresses.2. Retell 3a.,Where there is a will ,there is a way.有志者事竟成。,
