Unit 13 Section A 3a-4c 课件 2024-2025学年人教九年级英语全册

R·九年级全一册 Section A 3a-4c Unit 13 We’re trying to save the earth! 1 New words 残酷的；残忍的(adj.) 有害的(adj.) 工业；行业 (n.) 法律；法规(n.) 科学上的；科学的(adj.) 现在的(adj.)现在；礼物(n.) 承担得起；买得起(v.) cruel scientific afford harmful law industry present 鲨鱼(n.) (鱼)鳍(n.) 链子；链条 (n.) 生态系统(n.) 可重复使用的(adj.) 运输业；交通运输(n.) shark reusable transportation fin ecosystem chain /ʃɑːrk/ /fɪn/ /tʃeɪn/ /'iːkəʊsɪstəm/ /ˌriː'juːzəbl/ /ˌtrænspɔːr'teɪʃn/ 对……有害 在……顶部或顶端 食物链 参加 关掉 付费；付出代价 采取行动 be harmful to at the top of the food chain take part in turn off pay for take action New phrases Lead-in sharks Watch a video about sharks. 点击画面 播放视频 Save the sharks! Skipping reading Talk about shark fin soup. Sharks are endangered now. Appeal to people against eating shark fins. Para. 3 Para. 1 Para. 2 Read the title, the first and the last sentence of each paragraph and match the main ideas. 3a Read the passage about sharks and complete the fact sheet below. Number of sharks caught and traded every year How governments can help Two environmental groups against “finning” Around 70 million To develop laws to stop the sale of shark fins WildAid and the WWF Sharks are endangered, read the passage and judge the sentences. Read the first paragraph 1. Shark fin soup is famous all around the world. 2. We have to kill a whole shark to get a bowl of shark fin soup. √ √ Read the second paragraph. 1. People cut off sharks’ fins and throw the sharks back into the ocean. 2. Sharks are in the bottom of the food chain in the ocean’s ecosystem. √ × n. 生态系统 食物链 Read the third paragraph. 1. WildAid and the WWF are environmental protection groups in China. 2. Shark fins are good for health. × × Many have heard of shark fin soup. But do you realize that you’re killing a whole shark each time you enjoy a bowl of shark fin soup? 听说 Save the sharks! When people catch sharks, they cut off their fins and throw the sharks back into the ocean. This 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 ocean’s ecosystem. If their numbers drop too low, it will bring danger to all ocean life. 不但……而且…… 在……顶部或顶端 切下来；剪下来 不再 be harmful to… 对……有害 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. 濒危的 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 have shown that shark fins are good for health, so why eat them? Help save the sharks! 制定法律 people enjoy ____________________ fishermen ___________, ______________, then _______________________ ________________________________decreased quickly a bowl of shark fin soup catch sharks cut off their fins throw them into the ocean the numbers of some kinds of sharks Read the first two paragraphs and fill in the blanks. Retell the passage. A whole shark has been killed each time you enjoy a bowl of shark fin soup. When people catch sharks, they __________ their fins and throw the sharks back into the ocean. cut off Without a fin, a shark can __________ swim and slowly dies. If sharks’ numbers drop too low, it will _______________ all ocean life. _________________ some kinds of sharks have fallen ____ over 90 percent in the last 20 to 30 years. no longer bring danger to The numbers of by Language points 1.This is not only cruel, but also harmful to the environment. not only…but also…是一个连词词组，意为“不但……而且……”用于肯定句中，常用来连接两个并列的句子成分。 例句：他不仅是我的老师，而且是我的好朋友。 He’s not only my teacher, but (also) my good friend. 2. Sharks are at the top of the food chain in the ocean’s ecosystem. 例句：把你的姓名写在页面的顶端。 Write your name at the top of the page. at the top of 意为“在……顶部或顶端” 反义短语：at the bottom of 在……的底部 Read the passage again and fill in the blanks with the words in the box. 3b so although if but when 1. Many people do not realize they are killing a whole shark _______ they enjoy a bowl of shark fin soup. 2. Sharks are at the top of the food chain, ____ if their numbers drop, the ocean’s ecosystem will be in danger. when so so although if but when 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 may disappear one day ___ we do not do something to stop the sale of shark fins. but Although if Grammar Focus We’re trying to save the earth. Present progressive The river used to be so clean. used to The air is badly polluted. Passive voice No scientific studies have shown that shark fins are good for health. Present perfect We should help save the sharks. Modal verbs 时态 定义 现在进行时 现在完成时 被动语态 表示现在或现阶段正在发生或进行的动作 表示过去发生的动作对现在 产生的影响或结果 主语是谓语动作的承受者 时态 构成 现在进行时 现在完成时 被动语态 am / is/ are+动词-ing形式 have / has +动词过去分词 be + 动词过去分词 时态 常见标志词 现在进行时 现在完成时 now, at the moment(此刻), look, listen already, just或yet Fill in the blanks. 1. 听！一些女孩正在教室里唱歌。 Listen. Some girls ___________ in the classroom. 2. 他们已经打扫了教室。 They ______ already _______ the classroom. are singing have cleaned 3. 这儿的人不说英语。 English ______ ________ by people here. 4. 我曾去过那个国家。 I ______ ever ______ to that country. isn’t spoken have been 情态动词具有一定的意义，但不能单独作谓语，其后需接动词原形一起构成句子的谓语。 (除have to以外)没有人称和数的变化 情态动词 常见的情态动词有：can, may, must, need, have to, could, should, ought to 情态动词的常见用法 We can do it by ourselves. It must be Tom’s. Look at his name on the cover. 3. May I see your ID card, sir? 4. Should we finish our homework before noon? 表能力 表推测 表请求、许可 表应该 4a Fill in the blanks with the correct forms of the verbs in brackets. 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? Have taken helped considered had had took Ken: I _____ (think) more than 1,000 people _____ (come) to help out. Joe: That’s fantastic! I guess everyone in this city is _______ (try) to improve the environment. Ken: Yes, we can’t afford to _____ (wait) any longer to take action! think came trying wait Language points take part in意为“参加”。 例句：你参加过任何活动吗？ Did you take part in any activity? 【辨析】take part in , join与 join in take part in join join in 指参加某项活动（比赛）并在活动中起一定的作用。 指参加某党派、团体或参军等，并且成为其中的一员。 指参加某项活动，但多指正在进行的活动。 1. Did you ___________ the sports meeting yesterday? 2. He ________ the army last year. 3. I hope you can ________ the discussion. take part in joined join in Fill in the blanks. 4b can would could have to should must may/might People __________ think that big things ___________ 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. may/might must/have to can/should can/should Fill in the blanks with the appropriate modal verbs from the box. I think it’s 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 it’s far, you _________ take the bus. All these small things ________ add up and become big things that _________________ improve the environment. Let’s take action now! have to can can can can/ should Make a list of things that people can do to help the environment and discuss your list with your partner. 4c I think that everyone should use public transportation. I disagree. It’s difficult for parents with young children to use public transportation… Discussion Ways people can use to help the environment. recycle books and paper bring a bag to go shopping throw rubbish into the bin Stop killing wild animals and protect them. 课堂小结 We’re trying to save the earth. The river used to be so clean. The air is badly polluted. No scientific studies have shown that shark fins are good for health. We should help save the sharks. 1. 如果它们（鲨鱼）的数目降至过低，会给所有 海洋生物带来危险。 If their numbers drop too low, it will bring danger to all ocean life. 2. 但事实上，在这个行业，每年大约有七千万条 鲨鱼被捕捉和交易。 But in fact, around 70 million sharks are caught and traded in this industry every year. 3. 在过去的二三十年里，一些种类的鲨鱼的数量 下降了百分之九十以上。 The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years. Exercise 一、用所给词的适当形式填空。 1. The old man used _____ (be) a teacher. 2. We should _____ (clean) the room every day. 3. Look! Tom _________ (sleep) in his room. 4. Lots of trees __________ (plant) on the hill every year. 5. He _________ (live) here for 20 years. to be clean is sleeping are planted has lived 1. He promised to pick me up at the school gate. However, he _____ yet. A. didn’t arrive B. doesn’t arrive C. isn’t arriving D. hasn’t arrived 2. Ba Jin, one of the greatest writers in China, ___ as “People’s Writer”.   A. is regarded   B. has regarded    C. is regarding   D. regards 二、单项选择。 3. —At present, one of the best ways to study is working in groups. —More chances ______ to students to learn from each other. A. offer B. are offered C. have offered D. are offering Homework 1. Read the article and review key words, sentences and language points. Review the grammar focus we have learned in this period. Do the exercises.（见“”系列丛书 《创优作业》对应课时作业） 107052.43 $$