Unit 13 Section A 知识点课件 2024-2025学年人教版九年级英语全册

Unit 13 We are trying to save the earth. 人教版英语九年级全一册 Unit 13 Section A 1 Read the Words and Expressions in Section A 1. litter v. 乱扔 n. 垃圾；废弃物 2. bottom n. 底部；最下部 3. fisherman n. 渔民；钓鱼的人 4. coal n. 煤；煤块 5. ugly adj. 丑陋的；难看的 6. advantage n. 优点；有利条件 7. cost v. 花费 n. 花费；价钱 2 Read the Words and Expressions in Section A 8. wooden adj. 木制的；木头的 9. plastic adj. 塑料的 n. 塑料；塑胶 10. takeaway n. 外卖食物 11. bin n. 垃圾箱 12. shark n. 鲨鱼 13. fin n. (鱼)鳍 14. cruel adj. 残酷的；残忍的 3 Read the Words and Expressions in Section A 15. harmful adj. 有害的 16. be harmful to 对...有害 17. at the top of 在...顶部或顶端 18. chain n. 链子；链条 19. the food chain 食物链 20. ecosystem n. 生态系统 21. industry n. 工业；行业 4 Read the Words and Expressions in Section A 22. law n. 法律；法规 23. scientific adj. 科学上的；科学的 24. take part in 参加 25. afford v. 承担得起(后果)；买得起 26. turn off 关掉 27. reusable adj. 可重复使用的；可再次使用的 28. pay for 付费；付出代价 5 Read the Words and Expressions in Section A 29. take action 采取行动 30. transportation n. 运输业；交通运输 6 Language Points 1. litter v.乱扔 n.垃圾；废弃物 drop /throw /pick up the litter 扔/捡垃圾 eg: People are throwing litter into the river. 辨析：litter, rubbish, garbage, waste litter 指随手丢弃的垃圾 eg: Please do not litter. rubbish 指任何成堆的，破损的，用过的或无用的东西，尤指弃掉的垃圾堆 eg: You’d better not throw the rubbish on the ground. 7 Language Points garbage 指生活中的垃圾，包括厨房里的剩菜剩饭，或不能再用的食物 eg: Don’t forget to take out the garbage after dinner. waste 指任何被丢弃的东西 eg: The river was polluted by the waste from the factory. 8 Language Points 2. bottom n.底部；最下部 the bottom of sth. 某物的底部，尽头 from the bottom of one’s heart 从心眼里，衷心的 eg: (1)Even the bottom of the river was full of rubbish. (2)I waited for him at the bottom of the hill. 9 3. fisherman n.渔民；钓鱼的人 复数： fishermen eg: There were no more fish for fishermen to catch. 4. coal n.煤；煤块 eg: Put some coal on the fire. Language Points 10 Language Points 5. ugly adj.丑陋的；难看的 反义词：beautiful/good-looking/pretty an ugly face 一张丑陋的脸 eg: This is turning beautiful places into ugly ones. 11 Language Points 6. advantage n.优点；有利条件 反义词：disadvantage 不利因素 take advantage of sth./sb. 利用某物或某人 advantages and disadvantages 优势和劣势 eg: (1)The machine has many advantages. (2)She took advantage of the children’s absence to tidy their rooms. 12 Language Points 7. cost v. 花费 n. 花费；价钱 过去式/过去分词：cost/cost eg: It’s good for health and it doesn’t cost anything. 辨析：cost, spend, pay, take cost: 主语是物，常用搭配：sth. cost(s) (sb.)+金钱 eg: The computer cost me $1,000. 13 Language Points spend: 主语是人，常用搭配：sb. spend(s)+时间/金钱+on sth./(in)doing sth. eg: (1)I spent $1,000 on the computer. (2)I spent $1,000 in buying the computer. pay:主语是人，常用搭配：sb. pay(s)+(金钱)+for sth. eg: I paid $1,000 for the computer. take: 主语是it，常用搭配：It takes sb.+时间+ to do sth. eg: It took me an hour to write the letter. 14 Language Points ( )--How much is the ticket to Central Park? --A one-way ticket___________$40, and you can ______another $20 for a round trip. A. cost; pay B. cost；spend C. pay; spend D. spend; pay A 15 Language Points 8. wooden adj.木制的；木头的 名词：wood 木头，木材 in the woods 在森林/林地里 a piece of wood 一块木头 on a hard wooden floor 在一个硬的木制地板上 eg: (1)There is a wooden box under the bed. (2)The desk is made of wood. 16 Language Points 9. plastic adj. 塑料的 n.塑料；塑胶 plastic bag 塑料袋 eg: The toy car is made of plastic. 10. takeaway n.外卖食物 take away 拿走 eg: (1)Let’s have a takeaway tonight. (2)I want to take away the book which you showed me yesterday. 17 Language Points 11. bin n.垃圾箱 eg: Remember to throw rubbish in the bins. 12. shark n.鲨鱼 eg: When people catch sharks, they cut off their fins and throw the sharks back into the ocean. 13. fin n.（鱼）鳍 eg: Many have heard of shark fin soup. 18 Language Points 14. cruel adj.残酷的；残忍的 名词：cruelty 残忍 eg: I can’t stand people who are cruel to animals. 15. harmful adj.有害的 名词：harm 伤害，损伤 be harmful to =do harm to 对…有害 eg: Smoking can be harmful to your health. 19 Language Points 16. at the top of 在…顶部或顶端 反义短语：at the bottom of 在...底部 eg: He is at the top of the class in study. 17. chain n. 链子，链条 the food chain食物链 eg: (1)She wore a gold chain round her neck. (2)My bicycle chain is broken. 20 Language Points 18. ecosystem n.生态系统 eg: Sharks are at the top of the food chain in the ocean’s ecosystem. 拓展：eco- 生态的，生态学的 eco-city 生态城市 eco-community 生态社区 eco-driving 环保驾驶 eco-education 生态教育 21 Language Points 19. industry n.工业；行业 in industry 在工业 eg: Is there much industry in your country? 20. law n.法律；法规 名词：lawyer 律师 against/break the law 违法 obey the law 遵守法律 eg: There is a law against stealing. 22 Language Points 21. scientific adj.科学上的；科学的 名词：science 科学； scientist 科学家 eg: They made the school a place for scientific experiments. 22. take part in 参加 eg: How many countries will take part in the World Cup? 辨析：take part in; join in; join take part in: 参加某项工作，活动, 并在其中起一定的作用 eg: I didn't take part in the meeting. 23 Language Points join: 参加一个组织，党派或社会团体，从而成为其中一员；与…一起做… eg: He joined the army. join in: 多指参加正在进行的活动，如竞赛，娱乐，谈话等，其后只能接表活动的名词 eg: Can I join in the game? 24 Language Points 23. afford v.承担得起（后果）；买得起 常与can, could, be able to 连用，多用于否定句，后接名词，代词或动词不定式 eg: The house is too expensive. I cannot afford it. 24. turn off 关掉 同义短语：shut off turn on 打开 turn up 调高，出现 turn down 调低，拒绝 eg: Please turn off the lights when you leave a room. 25 Language Points 25. reusable adj.可重复使用的；可再次使用的 reusable plastic bottles 可再次使用的塑料瓶 动词：reuse 重复使用 eg: (1)You can also use reusable bags instead of plastic bags. (2)She often reuses old envelopes. 26 Language Points 26. pay for 付费；付出代价 eg: It’s a great idea that you now have to pay for plastic bags in some stores. 27. take action采取行动 take action to do sth. 采取行动做某事 eg: Let’s take action now! 27 Language Points 28. transportation n.运输业；交通运输 means of transportation 交通工具 动词：transport 运输 public transportation 公共交通 eg: (1)I think that everyone should use public transportation. (2)The river has played a very important role in transportation. 28 Key Sentences 1. Even the bottom of the river was full of rubbish. 甚至河底也满是垃圾。(P97 1c) bottom为名词，意为“底部；最下部”, at the bottom of 在...底部, 反义词：top n. 顶端；顶部 eg: (1)They live at the bottom of the hill. (2)His name is at the bottom of the page. Key Sentences 2. But it used to be so clean! 但是过去它是那么干净！(P97 1c) used to表示“过去常常；以前经常”，后跟动词原形，用来描述过去经常发生的动作或存在的状态 eg: He used to be quiet. 【辨析】used to do sth. ， be used to doing sth. used to do sth. 表示“过去经常做某事；以前经常做某事”，后跟动词原形 eg: My sister used to play baseball. Key Sentences be used to doing sth. 表示“习惯于做某事”，后跟名词、代词或动名词 eg: They are used to living in the countryside. ( )We used to_______in the evening, but now we are used to_____early in the moming. A.exercise; exercise B.exercise; exercising C.exercised; exercise D.exercising; exercise B Key Sentences 3. Everyone in this town should play a part in cleaning it up! 这个 城镇里的每一个人都应该参与清理它！(P97 1c) play a part in 意为“在...方面起作用，参与”，part前可用形容词修饰，后接名词、代词或动词－ing形式 eg: They are going to play a part in cleaning up the city park. Key Sentences 4. This is turning beautiful places into ugly ones. 这将把美丽的地方变成丑陋的地方。(P98 2b) ugly为形容词，意为“丑陋的；难看的” eg: The dog has an ugly face. 【拓展】反义词：beautiful/good-looking/pretty adj. 美丽的；漂亮的 Key Sentences 5. Well, to cut down air pollution, we should take the bus or subway instead of driving. 嗯，为了减少空气污染，我们应该乘坐公共汽车或者地铁，而不是开车。(P98 2d) (1)cut down是固定搭配，意为“减少；削减” eg: We must cut down on the amount of material we use. 【拓展】cut down还意为“砍倒；砍伐”，宾语为代词时要放在两个词中间 eg: They said they would cut it down soon. Key Sentences 【固定搭配】常见的“动词＋down”的短语搭配： cut down 减少；砍伐 sit down 坐下 put down 放下 look down 向下看；看不起 write down 写下 take down 放下：写下 go down 下去：下沉 break down 发生故障 calm down 冷静；镇静 turn down 开小；调低；拒绝 Key Sentences (2)instead of 意为“代替，而不是”，是复合介词，其后可接名词、代词、动名词、形容词或介词短语等 eg: What about eating fish instead of meat today? Key Sentences 6. There are other advantages of bike riding. 骑自行车还有别的好处。(P98 3a) advantage为可数名词，意为“优点；有利条件” eg: When you're travelling in South America, it's a great advantage if you speak Spanish. 【拓展】反义词：disadvantage n. 缺点；不利条件 eg: (1)To be honest, the new machine has a few disadvantages. (2)Every way has its advantages and disadvantages. Key Sentences 7. Also, I never take wooden chopsticks or plastic forks when I buy takeaway food. 还有，我买外卖食品的时候，从来不拿一次性木筷子或者塑料叉子。(P98 2d) wooden为形容词，意为“木制的；木头的” eg: The floor was made of wooden blocks. 【拓展】同根词：wood n. 木头；木材 eg: (1)There are many kinds of wood growing in this forest. (2)The table and the chair are made of wood. They are wooden. Key Sentences 8. So together, our actions can make a difference and lead to a better future! 所以，我们一起行动，就能影响他人，创造一个更美好的未来！(P98 2d) (1)make a difference意为“对...有作用／影响” eg: It made a big difference to my grades. (2)lead to意为“通向：导致”，该短语是动词短语，to是介词，表示方向或结果，后接名词, 该短语不能用于被动语态 eg: All roads lead to Rome. Key Sentences 9. When people catch sharks, they cut off their fins and throw the shark back into the ocean. 当人们捕捉到鲨鱼的时候，他们切掉鲨鱼的鱼鳍，然后把它们扔回大海。(P99 3a) cut off意为“切下，剪下，砍下”，该短语由“动词＋副词”构成 eg: Be careful not to cut your fingers off! 【拓展】常见的cut短语还有： cut up 切碎 cut in line 插队 cut down 减少，砍伐 Key Sentences 10. This is not only cruel, but also harmful to the environment. 这种做法不仅残忍，而且对环境有害。(P99 3a) (1)not only...but(also)... 意为“不但...而且..., 不仅...而且...”，为并列连词词组，连接两个相同的句子成分 eg: She not only plays well but also writes music. 【拓展】not only. . .but(also). . . . 如连接两个主语，谓语动词须与后边的主语保持一致，即就近原则；not only用于句首时，前一个句子要用倒装形式 eg: Not only you but also I am planning to go. Key Sentences (2)cruel为形容词，意为“残酷的；残忍的” eg: I think it's cruel to keep animals in cages. (3)harmful为形容词，意为“有害的；不利的”，常构成短语 be harmful to sb. /sth. , 意为“对某人／某物有害” eg: Strong sunlight can be harmful to young babies. Key Sentences 11. Without a fin, a shark can no longer swim and slowly dies. 失去 鱼鳍的鲨鱼再也不能在水里游泳，会慢慢死去。(P99 3a) no longer意为“不再”，为副词性短语，常置于系动词be、情态动词之后，实义动词之前，强调时间和动作不再持续，no longer 相当于not. . .any longer, any longer位于否定句的最后 eg: She is no longer a child. Key Sentences 12. Yes, we can't afford to wait any longer to take action! 是的，我 们迫不及待地想采取行动了！(P100 4a) afford为及物动词，意为“承担得起（后果）；买得起”，后面可跟名词、代词或动词不定式做宾语，常与can, could, be able to等连用，多用于否定句中 eg: I don't know how he can afford a new car on his salary. Key Sentences 13. For example, you can save electricity by turning off the lights when you leave a room. 例如，当你离开屋子的时候，你可以关灯来节约用电。(P100 4b) turn off 用来表示“关闭”收音机、电灯、煤气、水龙头等 eg: Make sure the gas is turned off before you go to bed. 【拓展】反义短语：turn on 打开 Key Sentences 14. I think it's a great idea that you now have to pay for plastic bags in some stores. 我认为你现在不得不在一些商场里买塑料袋是一个很棒的主意。(P100 4b) pay for是固定搭配，意为“付费；付出代价” eg: How much did you pay for the book? Key Sentences 【拓展】“动词＋for”的短语小结： search for 搜寻；寻找 look for 寻找 prepare for为...做准备 wait for 等待 call for 需要；要求 ask for 要求；恳求 Key Sentences 15. Let's take action now! 让我们现在就行动吧！(P100 4b) take action意为“采取行动” eg: We must take action in destroying the vermin. Key Sentences 【拓展】take的常见短语有： take care of 照顾 take pride in 因······而自豪 take action 采取行动 take a break 短暂休息一下 take a rest 休息一下 take a message 捎口信 take a deep breath 深呼吸 take away 带走；拿走 take out 取出；拿出 take off 脱掉；起飞 谢谢观看 50 $$