Unit 13 Setcion A 3a-4c课件2022-2023学年人教版九年级英语全册

Unit 13 We’re trying to save the earth! Section A 3a-4c To review the use of Present progressive, used to, Passive voice, Present perfect and Modal verbs. Learn and master new words: sharks, fin, cruel, harmful, chain, ecosystem, industry, law; Learn and master the phrases:hear of, cut off, be harmful to, at the top of, the food chain. 不同种类的污染 2. 河底 3. 把垃圾扔到河里 4. 在……中起作用 5. 在中国南部 6. 对……有害 7. 在……顶部 8. 海洋生态系统 different kinds of pollution the bottom of the river throw rubbish into the river play a part in I. Check if you remember these phrases. in southern China be harmful to at the top of… the ocean’s ecosystem shark fin cruel harmful be harmful to at the top of chain the food chain ecosystem industry law scientific n. 鲨鱼 n. (鱼)鳍 adj. 残酷的;残忍的 adj. 有害的 对......有害的 在......顶部或顶端 n. 链子;链条 食物链 n. 生态系统 n. 工业;行业 n. 法律;法规 adj. 科学上的;科学的 New Words and phrases 4 3a 5 Para. 1 Para. 2 Para. 3 Bad things happen when people cut off sharks’ fins. Environmental protection groups have done things to protect sharks. You’re killing a whole shark when you enjoy a bowl of shark fin soup. 速读,找出段落大意。 6 Read the passage quickly and judge the sentences T or F . ①Shark fin(鱼鳍)soup is famous and expensive all around the world. ② Sharks are at the bottom of the food chain in the ocean’s ecosystem. ③ WildAid and the WWF are environmental protection groups in China. ④ Shark fins are good for health Read the passage quickly and judge the sentences T or F 5. People cut off sharks’ fins and throw the sharks back into the ocean. 6. Sharks are in the bottom of the food chain in the ocean’s ecosystem. T F n. 生态系统 食物链 8 Read the passage about sharks and complete the chart below. 3a Many people do not realize they are killing a whole shark _ they enjoy a bowl of shark fin soup. Sharks are at the top of the food chain, _ if their numbers drop, the ocean’s ecosystem will be in danger. Many think that sharks are too strong to be endangered, _ they are wrong. _ there are no scientific studies to support this,