Unit 8 A green world讲义 -2024-2025学年牛津译林版八年级英语下册

8BU8 【重点词汇】 1 学科网（北京）股份有限公司 1. 减少空气污染 _____________ 2. 缩短淋浴时间_____________ 3. 节约能源 _____________ 4. 关灯 _____________ 5. 保护环境 _____________ 6. 过环保生活 _____________ 7. 开车送某人上学 _____________ 8. 造成严重的空气污染 _____________ 9. 被分成…… _____________ 10. 砍伐树木 _____________ 11. 在公共场所乱扔垃圾 _____________ 12. 依靠；取决于 _____________ 13. 使用太阳能 _____________ 14. 新型能源 _____________ 15. 耗尽 _____________ 16. 对……产生影响 _____________ 17. 处理…… _____________ 18. 听起来像 _____________ 19. 最大的问题之一 _____________ 20. 充满污染 _____________ 21. 清理 _____________ 22. 改善环境 _____________ 23. 更多生物 _____________ 24. 有一个……的机会 _____________ 25. 关于……的调查 _____________ 26. 刷牙 _____________ 27. ……的结果 _____________ 28. 成为一个严重的问题_____________ 29. 尽某人最大努力 _____________ 30. 对……有害 _____________ 31. 为……提供……_____________ 32. 保持水土，使土壤稳固 _____________ 33. 扔掉 _____________ 34. 采取适当的行动 _____________ 35. 使用中 _____________ 36. 产生很大的变化；有很大影响________ 37. 养成一种绿色的方式_____________ 【知识点详解】 知识点1：Are you serious?(P106) 你是认真的吗？ serious adj. 严肃的，认真的 例： The government still faces very serious difficulties. He's quite a serious person. ___________ adv. 严肃地，认真地 They spoke to me very seriously but politely. 知识点2：The Class 1, Grade 8 students are busy discussing the Earth’s problems and preparing a presentation.(P106) 八年级一班的学生们正在忙于讨论地球问题和准备演讲。 (1) be busy doing… 忙于做… 例： His mother is busy working these days. (2) prepare v. 准备 准备做某事____________________ Two workers were preparing a videotape recording(录像) of last week's programme. 为…做准备__________________________ He had to go back to his hotel and prepared for the next trip. 知识点3：More and more families own cars and this causes serious air pollution.(P107)越来越多的家庭拥有自己的小汽车，这导致了严重的空气污染。 cause v. 导致；造成 例： The insecticide(杀虫剂) used on some weeds can cause health problems. cause n. __________ 例： Smoking is the biggest preventable cause of death and disease. 知识点4：It’s wise for people to choose public transport or ride bicycles. 选择公共交通或骑自行车对人们来说是明智的。 wise adj. 明智的，充满智慧的 例： She has the air(气质) of a wise woman. _______ adv. 明智地，充满智慧地 例： They've invested(投资) their money wisely. _________ n.智慧，才智；明智 例： He is a man full of wisdom. 知识点5：We can save energy by turning off the lights when we leave a room. (P107) 当我们离开房间的时候可以通过关灯来节约能源。 (1) turn off 关上（开关） 指电器 反义词 turn on 开 turn相关的短语有： turn down __________ turn up __________ turn over __________ turn back __________ turn around __________ (2) turn 做______动词 表__________ turn green 变绿 ; 变得环保 When spring comes, the leaves turn green. 知识点6：In Switzerland, things like glass, plastic and paper are separated into different groups and then recycled. (P108) 在瑞士，像玻璃，塑料和纸做的东西被分成不同的群体，然后被回收。 separate v. 分开，隔开 例： Police moved in to separate the two groups. They want to separate teaching from research. It is difficult to separate legend(传说) from truth. 知识点7：For example, we are not allowed to cut down trees. (P108) 例如，我们不被允许砍伐树木。 (1) allow v. 允许 允许某人做…__________ 允许做…__________ The children are allowed to watch TV after school. We don't allow smoking in our house. (2)cut down 砍伐 拓展：cut 的其他相关短语： cut back __________ cut out __________ cut in __________ cut off __________ 知识点8：Otherwise, we will be punished. (P109) 否则，我们将会被惩罚。 (1) otherwise adv. _________ 这里的otherwise的用法可等同于_______ 原句也可表述为 Or we will be punished. I'm lucky that I'm interested in school work, otherwise I'd go crazy. (2)punish v. 处罚；惩罚 例： I don't believe that George ever had to punish the children. punishment n. 处罚；惩罚 例： The whole class glared(瞪眼) at the teacher when he told them his punishment. 知识点9：… We will be fined by the police. (P109) 我们将会被警察罚款。 fine v. 罚款 例： She was fined $300 and banned(禁止) from driving for one month. fine n. 罚金 例： He got a fine because of parking in a wrong place. fine adj. 好的；美好的 例： There is a fine view(风景) of the countryside. He is fine after seeing the doctor. 知识点10：We depend on its rich resources to live, so it is important for us to protect it wisely.(P109) 我们依赖于它的丰富的资源来生活，所以对于我们来说明智地保护它是重要的。 depend on /upon 常用于情景交际中，表示“依…而定” (1) __________ 例： My wife and daughter depend on me for their living. (2) __________ 例： All depends on the weather. __________ adj. 依靠的；从属的；取决于…的 The local economy is dependent on oil and gas extraction(提炼). 知识点11：These new types of energy cost very little and will never run out.(P109)这些新的能源形式花费很少而且将不会用尽。 run out 用尽；耗尽 注意 同义词：__________ 例：无被动用法 Conditions are getting worse and supplies(给养) are running out. run out of 用尽；耗尽；想不出 例： They have run out of ideas. We're running out of time. 知识点12：Remember that everyone can do something to make a difference!(P109) (1)__________________(对…)有影响，起作用 例： Whatever you can do can make a difference. (2) difference n. 不同 different adj. 不同的 反义词：same 知识点13：Pollution is one of the biggest problems in the world today.(P114)今天污染是世界上最大的问题之一。 pollution n. 污染 The level of pollution in the river was falling. pollute v. 污染 We love the sea, yet we pollute it. polluted adj. 被污染的 The police have warned the city's inhabitants(居民) not to swim in the polluted river. 知识点14：…more living things will be killed by pollution.(P114)…更多的生物将会被污染杀死。 (1) living adj. __________ The living things can’t live without sun. the living 指“活着的人” (2) lively adj. __________ She had a sweet, lively personality. (3) alive adj. 活着的，一般作表语 She does not know if he is alive or dead. (4) live adj. 直播的 知识点15：Air pollution is harmful to our health.(P116)空气污染对我们的健康有害。 harmful adj. 有害的 对…有害__________ 反义词：__________ 无害的 We ought to reason why it is harmful to health to eat too much. harm v. 伤害 The hijackers(劫机者) seemed anxious not to harm anyone. n. 伤害 对…有害___________________ All dogs are capable of doing harm to human beings. 知识点16：Trees also help keep soil in place during storms.(P116)树木也能在暴风雨期间帮助固定土壤在原处。 (1) in place _____________ This group are discussing the branching strategy currently in place. (2) place v. _____________ Brand folded it in his handkerchief and placed it in the inside pocket of his jacket. n. _____________ 常见短语： 发生；进行_____________ 代替，取代_____________ My wife and I discovered some good places to eat. She wanted Randy's wedding to take place quickly. 知识点17：They will form over thousands or even millons of years.(P117)他们形成将需要超过成千甚至上万年。 form v. 形成 They tried to form a study group on human rights(权利). n. 形式，形状；方式；表格 常见短语：以…样的形式 _____________ You will notice that he frames(架构) his analysis in the form of a debate. 知识点18：Here are some simple steps to take.(P117)这有些简单的步骤可以采取。 simple adj. 简单的 simply adv. 简单地 副词形式将le变为ly 类似的词还有：possible—possibly probable—probably gentle—gently, terrible—terribly, comfortable—comfortably He ate a simple dinner of rice and beans. step n. 步骤；措施 采取措施做某事_____________ She walked on a few steps. We should take steps to prevent war. 【同步例题分析】 例1：_____________ a light when necessary. You will bring light to other people and yourself. 1. Try B. Get on C. Turn on D. Put on 例2：The sports meeting ___________________ next month. 1. will hold B. is going to hold C. will be held D. are going to held 例3：— How are you today, Mike? — I’m worse now. I don’t think this medicine is _________ me. 1. good for B. bad for C. good at D. good to 例4：The rivers will become dirtier and dirtier if we don’t take action to ________ them. 1. recycle B. connect C. prevent D. protect 例5：It’s _______ of you to bring a map and a mobile phone with you while travelling in a big city like Shanghai, or you will get lost easily. 1. foolish B. serious C. equal D. wise 例6：今天我们将植树吗？ Will trees ________________________ today? 例7：这不仅仅对牙齿有益。 This ________________ more than just the teeth. 例8：我们可以做什么来减少空气污染呢？ What can we do _____________________________? 例9：要记得关掉电视。 Remember _________________ the TV. 例10：你们是如何保护环境的？ How do you _____________________________? 【课堂检测】 一. 根据句意及首字母提示完成单词 1. You’ve grown up. Don’t d____________ on your parents any more. 1. You are not a_______ to take phones here, sir. 1. You’ll be p_________ if you make the same mistake again. 1. Does the water energy p______________ pollution? 1. Supermarkets in China don’t provide p___________ (塑料) bags any more, right? 二. 根据句意，用括号内所给单词的适当形式填空 1. You should learn to spend your pocket money ____________ (wise). 1. How many _______(different) are these between the two pictures? 1. ___________(recycle) is good for the environment. Do you agree? 1. Will these old jeans and T-shirts be _________(send) to the factories? 1. Is Bill Gates still the _________(rich) man in the world at the moment? 三. 单项选择 1. Mr. Green speaks very loud ____________ all the people can hear him clearly. 1. so that B. when C. because D. while 2. As one of the school rules, middle school students are not _______________ to smoke. A. ordered B. refused C. allowed D. forbidden 3. The poor in this city ________ a difficult life now. Something should be done to help them. 1. is having B. are having C. was having D. were having 4. Your success ___________your hard work. 1. puts on B. gets on C. turns on D. depends on 5. A law ____________ in China to stop people from smoking in public places in 2010. A. is passed B. passes C. had passed D. was passed 四. 翻译句子 1. 我们国家有法律来保护环境。 Our country has______________________________. 2. 此处禁止停车。 You ______________________ park your car here. 3. 如果你砍倒了一棵树，你就会受到惩罚。 You ____________________ if you ___________________ a tree. 4. 生物对阳光有依赖性。 Living things _____________________ the sunlight. 5. 你们找到解决这个问题的新方法了吗？ Have you ________________________ this problem. 6. 那笔钱在月底之前将会用完。 That money will _______________ before the end of the month. 7. 风能几乎不产生污染。 The wind energy _________________________________. 8. 如果你从这儿横穿马路，你会被罚款。 If you cross the road from here, you ____________________________. 9. 我将慢跑以便你能赶上我。 I’ll run slowly ____________________ you can catch up with me. 10. 你通常如何处理你的旧衣服？ What do you usually _____________________________? 课后作业 一、单项选择 1. In Switzerland, keeping only one goldfish isn’t ________, because the government believes it is very bad to make such social animals live alone. A. stopped B. doubted C. refused D. allowed 2. The 24th Winter Olympic Games _____ in Beijing and Zhangjiakou in 2022, from Februrary 4th to 20th. A. is going to hold B. hold C. will be held D. was held 3. — How often do I need to feed the dog? — It _____ food every day, or it will be hungry. A. must give B. must be give C. must gave D. must be given 4. — How will you help with the activity? — We will _____ leaflets to ask people to take part. A. put out B. hand out C. find out D. cut out 5. — Shall we go on Friday or Sarturday? — Either day is OK. It makes no ______ to me. A. choice B. change C. difference D. decision 6. — Are you going to have a part-time job during the summer vacation? — Yes. I think I shouldn’t always _____my parents since I’ve grown up. A. fight against B. argue with C. hear from D. depend on 7. Driving after drinking wine _____ in China. A. allows B. doesn’t allow C. is allowed D. isn’t allowed 8. Some people waste too much water. They don’t believe that it can _____ some day. A. keep out B. run out C. be run out D. run out of 9. Both water and wind can be used to _____ electricity(电). A. push B. protect C. prevent D. produce 10. Let’s wait and see whether books _____ by the Internet in the future. A. replace B. replaced C. will be replaced D. were replaced 11. My parents don’t allow me _______ late. A. stay up B. to stay up C. stays up D. staying up 12. Our country is taking action to _______ air pollution. A. cut down B. cut up C. cut out D. cut off 13. The Yellow River ____ flood large areas, but now the waters of it are used to ____ energy. A. was used to; producing B. use to; producing B. was use to; produce D. used to; produce 14. — Tommy, do you know if Frank ____ to the theare with us this Sunday if the weather ____? — Sorry. I have no idea. A. will go; is fine B. goes; is fine B. Will go; will be fine D. goes; will be fine 15. — Let’s buy a new camera. — Oh, no! We have almost _____ the money. A. taken down B. taken care of C. run out of D. run after 16. — In Chinese culture, children born in the Year of the Monkey are said to be smart. — Yes. They are always full of energy, so I think they are also_____. A. honest B. generous C. lively D. modest 17. — What do you think of your English teacher? — I like him very much. He is ___ kind ____ hard-working. A. either; or B. neither; nor C. not; or D. not only; but also 18. — Hobo, can I eat the hamburger? — Sure, if the dishes_______ A. wash B. are washed C. will wash D. will be washed 19. The poor girl ____ by the unfriendly boys when she told her story. A. laughed at B. were laughed at C. laughs at D. is laughed 20. — Could you please turn off the TV? — ______, I ______. I want to watch the sports news. A. No, couldn’t B. Sorry, can’t C. Sure, can D. Sorry, couldn’t 21. — Please print this article on both sides of the paper. — _____. A. Me, too B. well done C. OK, I will D. That’s all right 22. _____ to smile at your life when you are in trouble, and you will soon be happy again. A. Try B. To try C. Trying D. Tried 23. You will be late for school ____ you don’t get up early. A. but B. and C. if D. or 二、填空题 1. The dog ran quickly towards its ______(own). 2. By this way, we hope to _____(减少) the waste at school. 3. He was _______(罚款) $ 100 last week. 4. Please find out some _________(不同) between the two pictures. 5. Can you hear the _______(脚步声) outside the classroom? 6. I can’t ______(分开) my work from life. It has become part of my life. 7. Do you known there is an _______(organize) called “Green Hope” working to protect the environment in the city? 8. The old text books will ____ (collect) and we will give them away to the Hope Middle School. 9. The old man ___________ (tell) to leave his house yesterday. 10. I’m afraid more people ____________(hurt) by pollution in the future. 11. Students __________(show) how to protect the environment in tomorrow’s class. 12. Remember to turn off the ______(煤气) when you leave home. 13. Open your presents carefully and recycled or ____(再用) the wrapping paper the next year. 14. There’s _____(dusty) in the house everywhere. 15. To protect the earth, we mustn’t throw away the waste _______(care). 16. It is reported that the coal under the ground has been ______(形成) over thousands or even millions of years. 17. You should finish the work with three _____(步骤) 18. If your time is spent _____(wise), you can do more work and have more rest. 三、完成句子 1. 垃圾在回收之前会被分类的。 The rubbish _____________________________ before it is recycled. 2. 我们可以通过缩短淋浴时间来节约用水。 We can save water ____________________________________. 3. 当你离开教室时，记得要关灯。 ___________________ the lights when you leave the classroom. 4. 我们已经做了许多来帮助保护家乡的河流。 We _________________ a lot to help ___________in our hometown. 5. 我认为政府将制定更多法律以保护环境。 I think more _________________________ by the government. 6. 这些新型绿色能源不仅成本低，而且对环境危害小。 These new types of green energy _________________ but also do little harm to the environment. 7. 我觉得你应该让Mary 坐地铁上学而不是开车送她去。 I think you should let Mary go to school by underground _________________________ to school. 8. 他喜欢生活在自然的形式里。 He likes living ___________________________ nature. 参考答案 【重点词汇】 1. 2. 减少空气污染 reduce air pollution 3. 缩短淋浴时间 take shorter showers 4. 节约能源 save energy 5. 关灯 turn off the lights 6. 保护环境 protect the environment 7. 过环保生活 live a green life 8. 开车送某人上学 drive sb. to school 9. 造成严重的空气污染 cause serious air pollution 10. 被分成…… be separated into… 11. 砍伐树木 cut down trees 12. 在公共场所乱扔垃圾 drop litter in a public place 13. 依靠；取决于 depend on 14. 使用太阳能 use energy from the sun 15. 新型能源 new types of energy 16. 耗尽 run out 17. 对……产生影响 make a difference to 18. 处理…… do with … 19. 听起来像 sound like 20. 最大的问题之一 one of the biggest problems 21. 充满污染 be filled with 22. 清理 clean up 23. 改善环境 improve the environment 24. 更多生物 more living things 25. 有一个……的机会 have a chance to 26. 关于……的调查 a survey on 27. 刷牙 brush teeth 28. ……的结果 the result of 29. 成为一个严重的问题 30. become a serious problem 31. 尽某人最大努力 try one’s best 32. 对……有害 be harmful to / be bad for 33. 为……提供…… provide sth for sb. / provide sb with sth 34. 保持水土，使土壤稳固 keep soil in place 35. 扔掉 throw away 36. 采取适当的行动 take proper actions 37. 使用中 in use 38. 产生很大的变化；有很大影响make a big difference 39. 养成一种绿色的方式 develop a green lifestyle 1 学科网（北京）股份有限公司 【知识点详解】 知识点1：Are you serious?(P106) 你是认真的吗？ serious adj. 严肃的，认真的 例： The government still faces very serious difficulties. He's quite a serious person. seriously adv. 严肃地，认真地 They spoke to me very seriously but politely. 知识点2：The Class 1, Grade 8 students are busy discussing the Earth’s problems and preparing a presentation.(P106) 八年级一班的学生们正在忙于讨论地球问题和准备演讲。 (1) be busy doing… 忙于做… 例： His mother is busy working these days. (3) prepare v. 准备 prepare to do sth 准备做某事 Two workers were preparing a videotape recording(录像) of last week's programme. prepare for… 为…做准备 He had to go back to his hotel and prepared for the next trip. 知识点3：More and more families own cars and this causes serious air pollution.(P107)越来越多的家庭拥有自己的小汽车，这导致了严重的空气污染。 cause v. 导致；造成 例： The insecticide(杀虫剂) used on some weeds can cause health problems. cause n. 起因；原因 例： Smoking is the biggest preventable cause of death and disease. 知识点4：It’s wise for people to choose public transport or ride bicycles. 选择公共交通或骑自行车对人们来说是明智的。 wise adj. 明智的，充满智慧的 例： She has the air(气质) of a wise woman. wisely adv. 明智地，充满智慧地 例： They've invested(投资) their money wisely. wisdom n.智慧，才智；明智 例： He is a man full of wisdom. 知识点5：We can save energy by turning off the lights when we leave a room. (P107) 当我们离开房间的时候可以通过关灯来节约能源。 (1) turn off 关上（开关） 指电器 反义词 turn on 开 turn相关的短语有： turn down 调小;拒绝 turn up 调高 turn over 翻过来; 翻身 turn back 折回; 往回走 turn around 转身 (2) turn 做系动词 表变化 turn green 变绿 ; 变得环保 When spring comes, the leaves turn green. 知识点6：In Switzerland, things like glass, plastic and paper are separated into different groups and then recycled. (P108) 在瑞士，像玻璃，塑料和纸做的东西被分成不同的群体，然后被回收。 separate v. 分开，隔开 例： Police moved in to separate the two groups. They want to separate teaching from research. It is difficult to separate legend(传说) from truth. 知识点7：For example, we are not allowed to cut down trees. (P108) 例如，我们不被允许砍伐树木。 (1) allow v. 允许 allow sb. to do 允许某人做… allow doing sth. 允许做… The children are allowed to watch TV after school. We don't allow smoking in our house. (2)cut down 砍伐 拓展：cut 的其他相关短语： cut back 削减;缩减 cut out 删除;删掉 cut in 插嘴 cut off 切断;中断 知识点8：Otherwise, we will be punished. (P109) 否则，我们将会被惩罚。 (2) otherwise adv. 否则 这里的otherwise的用法可等同于or 原句也可表述为 Or we will be punished. I'm lucky that I'm interested in school work, otherwise I'd go crazy. (2)punish v. 处罚；惩罚 例： I don't believe that George ever had to punish the children. Punishment n. 处罚；惩罚 例： The whole class glared(瞪眼) at the teacher when he told them his punishment. 知识点9：… We will be fined by the police. (P109) 我们将会被警察罚款。 fine v. 罚款 例： She was fined $300 and banned(禁止) from driving for one month. fine n. 罚金 例： He got a fine because of parking in a wrong place. fine adj. 好的；美好的 例： There is a fine view(风景) of the countryside. He is fine after seeing the doctor. 知识点10：We depend on its rich resources to live, so it is important for us to protect it wisely.(P109) 我们依赖于它的丰富的资源来生活，所以对于我们来说明智地保护它是重要的。 depend on /upon 常用于情景交际中，表示“依…而定” (1) 依靠，依赖，指望 例： My wife and daughter depend on me for their living. (2) 取决于 例： All depends on the weather. dependent adj. 依靠的；从属的；取决于…的 The local economy is dependent on oil and gas extraction(提炼). 知识点11：These new types of energy cost very little and will never run out.(P109)这些新的能源形式花费很少而且将不会用尽。 run out 用尽；耗尽 注意无被动用法 同义词：use up 例： Conditions are getting worse and supplies(给养) are running out. run out of 用尽；耗尽；想不出 例： They have run out of ideas. We're running out of time. 知识点12：Remember that everyone can do something to make a difference!(P109) (1) make a difference (to sb/sth) (对…)有影响，起作用 例： Whatever you can do can make a difference. (3) difference n. 不同 different adj. 不同的 反义词：same 知识点13：Pollution is one of the biggest problems in the world today.(P114)今天污染是世界上最大的问题之一。 pollution n. 污染 The level of pollution in the river was falling. pollute v. 污染 We love the sea, yet we pollute it. polluted adj. 被污染的 The police have warned the city's inhabitants(居民) not to swim in the polluted river. 知识点14：…more living things will be killed by pollution.(P114)…更多的生物将会被污染杀死。 (1) living adj. 活着的，活的 The living things can’t live without sun. the living 指“活着的人” (2) lively adj. 生动活泼的，生机勃勃的 She had a sweet, lively personality. (3) alive adj. 活着的，一般作表语 She does not know if he is alive or dead. 批注：living 和alive的区别： Living 不仅可以作表语，也可作定语位于名词前；而alive 只能作表语。 (5) live adj. 活的 一般用于动物 A protest against the company's tests on live animals. 知识点15：Air pollution is harmful to our health.(P116)空气污染对我们的健康有害。 harmful adj. 有害的 be harmful to 对…有害 反义词：harmless 无害的 We ought to reason why it is harmful to health to eat too much. harm v. 伤害 The hijackers(劫机者) seemed anxious not to harm anyone. n. 伤害 do harm to 对…有害 All dogs are capable of doing harm to human beings. 知识点16：Trees also help keep soil in place during storms.(P116)树木也能在暴风雨期间帮助固定土壤在原处。 (1) in place 在正确位置 This group are discussing the branching strategy currently in place. (3) place v. 放置 Brand folded it in his handkerchief and placed it in the inside pocket of his jacket. n. 地方，地点 常见短语：take place 发生；进行 take the place of 代替，取代 My wife and I discovered some good places to eat. She wanted Randy's wedding to take place quickly. 知识点17：They will form over thousands or even millons of years.(P117)他们形成将需要超过成千甚至上万年。 form v. 形成 They tried to form a study group on human rights(权利). n. 形式，形状；方式；表格 常见短语： in the form of 以…样的形式 You will notice that he frames(架构) his analysis in the form of a debate. 知识点18：Here are some simple steps to take.(P117)这有些简单的步骤可以采取。 simple adj. 简单的 simply adv. 简单地 副词形式将le变为ly 类似的词还有：possible—possibly probable—probably gentle—gently, terrible—terribly, comfortable—comfortably He ate a simple dinner of rice and beans. step n. 步骤；措施 take steps to do sth采取措施做某事 She walked on a few steps. We should take steps to prevent war. 【同步例题分析】 例1：_____________ a light when necessary. You will bring light to other people and yourself. 1. Try B. Get on C. Turn on D. Put on 解析：句意为“开灯”。 答案：C 例2：The sports meeting ___________________ next month. 1. will hold B. is going to hold C. will be held D. are going to held 解析：注意被动语态的使用，next week可知用被动语态的一般将来时。 答案：C 例3：— How are you today, Mike? — I’m worse now. I don’t think this medicine is _________ me. 1. good for B. bad for C. good at D. good to 解析：注意审题题前有否定，因而这里用be good for,“对…有益”。 答案：A 例4：The rivers will become dirtier and dirtier if we don’t take action to ________ them. 1. recycle B. connect C. prevent D. protect 解析：A.为回收，B.为连接 C.为预防 D.为保护 答案：D 例5：It’s _______ of you to bring a map and a mobile phone with you while travelling in a big city like Shanghai, or you will get lost easily. 1. foolish B. serious C. equal D. wise 解析：注意审题，“在上海这样的大城市旅游，带上…很明智” 答案：D 例6：今天我们将植树吗？ Will trees ________________________ today? 解析：注意使用被动语态，基本结构为“be+过去分词” 答案：be planted by us 例7：这不仅仅对牙齿有益。 This ________________ more than just the teeth. 解析：“对…有益”为“be good for” 答案：is good for 例8：我们可以做什么来减少空气污染呢？ What can we do _____________________________? 解析：注意使用动词不定式，表目的减少空气污染，用“reduce air pollution”。 答案：to reduce air pollution 例9：要记得关掉电视。 Remember _________________ the TV. 解析：remember to do 表示事情没有做，remember doing 表示事情做过了。 答案：to turn off 例10：你们是如何保护环境的？ How do you _____________________________? 解析：保护环境“protect the environment”。 答案：protect the environment 【课堂检测】 一. 根据句意及首字母提示完成单词 depend , allowed, punished, produce, plastic 二. 根据句意，用括号内所给单词的适当形式填空 wisely, differences, Recycling, sent, richest 三. 单项选择 ACBDD 四. 翻译句子 1. laws to protect the environment 2. are not allowed to 3. will be punished; cut down 4. depend on 5.found the new ways to solve 6. run out 7. hardly causes pollution 8. will be fined 9. so that 10.do with your old clothes 课后作业 一、单项选择 DCDBC;DDBDC; BADAC; CDBBB; CAC 二、填空题 owner; reduce; fined; differences; steps; separate; organization; be collected; was told; will be hurt; will be shown; gas; reuse; dust; carelessly; formed; steps; wisely 三、完成句子 will be separated into different groups by taking shorter shower Remember to turn off have already done; protect the rivers laws will be made to protect the environment not only cost little instead of driving her in the form of 1 学科网（北京）股份有限公司 $$