第二课时sectionA3a4c第二课时sectionA3a4c

Unit 13 were trying to save the earth!,Section A (3a 4c),shark fin cruel harmful be harmful to,n. 鲨鱼 n.（鱼）鳍 adj. 残酷的；残忍的 adj. 有害的 对有害,at the top of chain ecosystem industry law,在顶部或顶端 n. 链子；链条 n. 生态系统 n. 工业；行业 n. 法律；法规,scientific take part in afford turn off,adj. 科学上的；科学的 参加 v. 承担得起（后果）; 买得起 关掉,NEXT,reusable pay for take action transportation,adj.可重复使用的； 可再次使用的 付费；付出代价 采取行动 n. 运输业；交通运 输,1. cruel adj.残酷的；残忍的 be cruel to sb.sth.对某人某物残忍 How could you be so cruel to a child？你怎么能对一个孩子如此残忍呢？,BACK,2. industry n. 工业；行业 表示“在某个行业中”，介词用in。 Lots of energy is consumed every year in the steel industry.每年钢铁业都要消耗很多能源。,BACK,3. afford v.承担得起（后果）；买得起 afford意为“花得起(时间、金钱、精力等)；买得起，”或“负担得起费用、损失、后果等”，常和情态动词can或be able to连用，且常用于否定句和一般疑问句中，是及物动词，后面可接名词、动词不定式作宾语。,He cant afford (to buy) a car.他买不起一辆车。 He cant afford to be out of work.他承受不了失业的后果。,BACK,4. reusable adj. 可重复使用的； 可再次使用的 【构成】前缀re-(再；又）+ us(e) + 后缀able；类似构成 的词还有recyclable。 It became the first reusable vehicle in space.它成为第一个 能重复使用的宇宙交通工具。,BACK,5. be harmful to . 对有害 be bad for . do harm to (harm为名词，意为“害 处；损害”),BACK,6. take part in参加 Will you take part in the party?你会参加晚会吗？ 【拓展】join多指参加某组 织，成为其中的一个成员。 而take part in指参加活动。,BACK,7. pay for 付费；为付出 代价或受惩罚 Hell pay for his carelessness one day.他总有一天会为自己的粗心而付出代价的。,BACK,8. turn off 关掉(机器、电灯、 水、煤气等) 【拓展】turn on 打开，与 turn off相对；turn up 开大 (灯火、煤气等)；调高(音量等)，与之相对的是turn down。,BACK,Read the passage about sharks and complete the fact sheet below.,3a,Many have heard of sharks fin soup. This famous and expensive dish is especially popular in southern China. But do you realize that youre killing a whole shark each time you enjoy a bowl of sharks fin soup?,Save the Sharks!,When people catch sharks, they cut off their fins and throw the shark back into the ocean.This method is not only cruel, but also harmful to the environment. Without a fin, a shark can no longer swim and slowly dies. Sharks are at the top of the food chain in the oceans ecosystem.,If their numbers drop too low, it will bring danger to all ocean life. Many believe that sharks can never be endangered because they are the strongest in their food chain.,But in fact, around 70 million sharks are caught and traded in this industry every year. The numbers of some kinds of sharks have fallen by over 90 percent 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 sharks fins. So far, no scientific studies have shown that sharks fins are good for health, so why eat them? Help save the sharks!,NEXT,so far 到目前为止；迄今为 止 常用于现在完成时态。 So far， the strategy has worked.到目前为止，这个 策略行之有效。,BACK,complete the fact sheet below.,70 million,southern China,over 90 percent,WildAid and the WWF,Read the passage again and fill in the blanks with the words in the box.,3b,1. Many people do not realize they are killing a whole shark _they enjoy a bowl of sharks fin soup. 2. Sharks are at the top of the food chain, _if their numbersdrop, the oceans ecosystem will be in danger.,so,when,NEXT,be in danger 处于危险之中 be in a dangerous situation She didnt realize that she had already been in danger then.她那时并未意识到已身 处险境。,BACK,Many think that sharks are too strong to be endangered, _ they are wrong. _there are no scientific studies to support this, a lot of people believe that shark fins are good for health. 5. Sharks may disappear one day _ we do not do something to stop the sale of shark fins.,but,Although,If,Grammar Focus,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).,Fill in the blanks with the correct forms of the verbs in brackets.,4a,Have taken,helped,considered,has,had,Joe: How many people _ (take) part? Ken: I _ (think) more than 1,000 people _(come) to help out. Joe: Thats fantastic! I guess everyone in this city is _ (try) to improve the environment. Ken: Yes, we can't affort to _ (wait) any longer to take action!,took,think,came,trying,wait,Fill in the blanks with the appropriate modal verbs from the box.,4b,People _ think that big things _ be done. However, 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 paper or reusable bags instead of plastic bags.,may,could,would,should,I think its a great idea that you now _ pay for plastic bags in some stores. 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!,have to,can/should,can/could,could,would/can,NEXT,add