unit13wearetryingtosavetheearth知识点总结
人教版 九年级unit13 We are trying to save the earth知识点详解
Unit 13 We are trying to save the earth.知识点详解单元目标总览：1.noise pollution噪音污染（1）noise此处作为名词，意为噪音。
make noises或make a noise意为制造噪音。
◆If you make noises at night,my dog will bark.如果你在晚上发出吵闹声，我的狗会叫。
（2）pollution不可数名词，“污染，污染物”，其动词形式是pollute。
◆The river has been polluted by wastewater from the factory.这条河流已经收到工厂废水的污染。
2. The air has become really polluted around here. 这儿的空气已经被污染了。
辨析：turn, get 与become①become多指身份、职位等的变化，它强调变化的过程已经完成，后面可接名词或形容词。
◆He becomes a teacher. 他成了一名老师。
② get多用于口语，表示一种变化过程，强调的是“渐渐变得”，后常接形容词的比较级形式。
◆In winter the days get shorter. 冬季白天变得较短。
③ turn指在颜色和性质等方面与以前的完全不同，强调变化的结果。
◆Leaves turned brown in the mountains. 山里的树叶已变成了棕色。
3. To cut down air pollution, we should take the bus or subway instead of driving. 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。
cut down 意为“减少”；是“动词+副词”结构的短语，所带的宾语为名词时，宾语可位于down的前面或后面；为代词时，只能位于down前面。
最新精编秋人教版英语九年级unit3《wearetryingtosavetheearth》知识点工作总结精品模板
Unit 13 We're trying to save the earth！第1课时(Section A 1a－3b)短语1．play a part in点拨play a part in 意为“在……中起作用；扮演角色；参与……”，其后面如果接动词，要用动名词形式。
链接play with 和……一起玩play against 对抗2．clean up点拨clean up 意为“打扫干净；整理好”，强调对某物进行整理和打扫，使其变得更加干净。
如：I will clean my old books up.我要把我的旧书整理一下。
链接(1)clean-up 是合成词。
如：Today is a Clean-up Day.今天是清洁日。
(2)clean out 意为“扫除；清除；打扫干净”，强调将某物扫除掉，将其扔掉，从而达到干净的效果。
如：I asked the children to clean out their desks.我叫孩子们把他们的课桌清理一下。
3．instead of点拨instead of 意为“代替；而不是”。
辨析instead 与 instead of(1)instead of 是短语介词，后面一般接名词、代词、动名词或介词短语做宾语。
instead of 如果后面跟介词短语，介词不可省略。
如：We will have fish instead of meat this evening.我们今晚吃鱼不吃肉。
They'll have tea in the garden instead of in the house. 他们在花园里，而不在屋子里喝茶。
(此句中的 of 和 in 均不可省略)(2)instead 单独使用时，是做副词，意思是“代替；顶替”。
如：Last summer I went to Qingdao. This summer I'm going toDalian instead.去年夏天我去了青岛。
Unit-13-We're-trying-to-save-the-earth!重难点全解
word格式-可编辑-感谢下载支持Unit 13 We’re trying to save the earth!1. Environment protection 环境保护2. air pollution 空气污染3. noise pollution 噪音污染4. water pollution 水污染5. Public places 公共场所；公共地方6. Mobile phone 手机；可移动电话7. Art pieces 艺术品8. The food chain 食物链9. Scientific studies 科学研究10. The number of ... ...... 的数目11. Take part in 参加12. Take action 采取行动；采取措施13. Turn off关闭 = shut off14. Play a part in 在......中起作用15. Make a difference 起作用；有影响16. Pay for 付费；付出代价17. Put sth to good use 好好利用= make good use of18. Pull down 撤出；摧毁19. Cut down 砍到；削减20. Cut off 把......砍断开；截断21. Add up 把......加起来；加起来22. Clean up 把......打扫干净23. Throw away 把......扔掉；丢掉24. Bring back 拿回；归还；恢复25. Lead to 通向；导致26. Can’t afford to do sth. 不能承担做某事27. Build sth . out of 用......来建造某物28. Be made of 被用......制造成29. Be made from 被用......制造成30. Be famous for ........ 因......而出名31. Be full of 充满......；装满......= be filled with32. Be good for 对......有好处33. Be harmful to 对......有害34. (be) in danger 处于危险状态之中35. In the last twenty to thirty years.在过去的20至30年中36. At the top of sth 在......的顶部37. Instead of 代替；取代38. Upside down 上下颠倒；倒转1. We’re trying to save the earth! 我们正在竭尽全力拯救地球!try to do =try one’s best to do 努力去做某事。
人教版九年级英语下册Unit 13 We’re trying to save the earth!S
2．It's good for hetrlth and it doesn’t cost anything！它有利于信康，并且它不花费任何东
西！（教材第98页） be good for意为“对……有益”，反义词组be bad for意为“对……有害”。 辨析：be good for，be good at与be good with
【中考链接2】
1. (2014山东威海中考模拟) Why don't you＿＿A ＿your
friends to the party? I want to meet them.
A bring
B. brings
C.leaves
D Mr Li. I A my
Unit 13 We’re trying to save the earth!
Section A 课堂精讲
【语法点精讲】
1．（1）We're trying to save the earth!我们正在 竭力拯救地球！
（2）People are throwing litter into the river.人们 正在把垃圾扔进河里。
(2) 表示现阶段正在进行的动作或存在的状态。 如： They are studying hard this term. 他们这个学期学习一直很努力。 (3)come,go，leave，arrive，start等动词用现在 进行时表示将来。 如：The bus is coming soon. 车不久就会来了。 (4)在由while(当……时候)引导的状语从句中，动
English homework at home.
－Don’t forget it to school tomorrow.
Unit 13 We're trying to save the earth! 重难点知识归纳总结
人教版英语九年级Unit 13 We're trying to save the earth! 重难点知识归纳总结【重点单词】litter ['lɪtə] v. 乱扔n. 垃圾；废弃物bottom [ˈbɒtəm] n. 底部；最下部fisherman [ˈfɪʃəmən] n. 渔民；钓鱼的人coal [kəʊl] n. 煤；煤块ugly [ˈʌɡli] adj. 丑陋的；难看的advantage [ədˈvɑːntɪdʒ] n.优点；有利条件cost [kɒst] v. 花费n. 花费；价钱wooden [ˈwʊd(ə)n] adj. 木制的；木头的plastic ['plæstɪk] adj. 塑料的n. 塑料；塑胶shark ['ʃɑːk] n. 鲨鱼fin [fɪn] n.（鱼）鳍cruel [ˈkruːəl] adj. 残酷的；残忍的harmful [ˈhɑːmfʊl] adj. 有害的chain [tʃeɪn] n. 链子；链条ecosystem ['iːkəʊsɪstəm] n. 生态系统industry [ˈɪndəstri] n. 工业；行业law [lɔː] n. 法律；法规scientific [saɪən'tɪfɪk] adj. 科学上的；科学的afford [ə'fɔːd] v. 承担得起（后果）；买得起reusable [ri:'ju:zəbl] adj. 可重复使用的；可再次使用的transportation [ˌtrænspə'teɪʃən] n. 运输业；交通运输recycle [riː'saɪkl] v. 回收利用；再利用napkin ['næpkɪn] n. 餐巾；餐巾纸gate [geɪt] n. 大门bottle [ˈbɒtl] n. 瓶；瓶子president [ˈprezɪdənt] n. 负责人；主席；总统inspiration [ˌɪnspə'reɪʃən] n. 灵感；鼓舞人心的人（或事物）iron ['aɪən] n. 铁work [wɜːk] n. (音乐、艺术)作品metal ['metl] n. 金属creativity [ˌkriːeɪ'tɪvɪtɪ] n. 创造力；独创性【重点短语】1. at the bottom of the river 在河底2. be full of rubbish 充满垃圾3. throw litter into the river 把垃圾扔入河中4. play a part in cleaning it up 尽一份力把它清理干净5. land pollution 土地污染6. fill the air with black smoke 使空气中充满了黑烟7. cut down air pollution 减少空气污染8. make a difference 产生影响9. take action 采取行动10. turn off 关掉11. pay for 付费12. add up 累加13. use public transportation 使用公共交通14. recycle books and paper 回收书和纸15. use paper napkins 使用纸巾16. turn off the shower 关掉淋浴器17. ride in cars 开车出行18. cut off 割掉；砍掉19. upside down 颠倒；倒转【重点句型】1.Even the bottom of the river was full of rubbish.甚至河底都充满了垃圾。
unit13wearetryingtosavetheearth知识点总结
Unit 13 We are trying to save the earth!一．教材知识详解Section A1.The air has become really polluted around here.(1)现在完成时（复习）(2)become2.Well, cut down air pollution, we should take the bus or subway instead of driving.(1)cut down(2)instead of 与instead3.There are other advantages of bike riding. It’s good for health and it doesn’t cost anything!考点：advantage4.And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.(1)remember to do remember doing(2)系动词keep(3)everyone与every one5.Many have heard of shark fin soup.hear of 听说hear短语归纳：6.When people catch sharks, they cut off their fins and throw the shark back into the ocean.cut off 连接名词或代词时，名词或代词应放在_________________________cut短语归纳：off短语归纳：7.This method is not only cruel, but also harmful to the environment.(1)cruel(2)not only...but also(3)be harmful to8.So far, no scientific studies have shown that shark fins are good for health, so why eat them?考点：so far9.Many believe that sharks can never be endangered because they are the strongest in their food chain.(1)the strongest(2)Endanger10.afford /spend/take/cost/paySection B1.Do you often throw away things you don’t need anymore?考点：throw away2.Have you ever thought about how these things can actually be put to good use?(1)think about(2)put ...to good use*put 其他短语：3.She lives in a house in the UK that she built herself out of rubbish.(1)built...out of sth(2)定语从句复习4.The windows and doors come from old buildings around her town that were pulled down.考点：pull down*pull其他短语：5.She opened a small shop where she sells her bags, and she has also set up a website to sell them on line.(1)This is the city where I was born.(2)set up*set相关短语：6.Not only can the art bring happiness to others, but it also shows that even cold, hard iron can be brought back to life with a little creativity.(1)not only...but also...(2)bring...back to life(3)others二．语法复习1.现在进行时ed to3.被动语态4.现在完成时5.情态动词【基础训练】【能力提升】。
九年级英语全册 Unit 13 We’re trying to save the earth重点难点
Unit 13 We are trying to save the earth.重点、难点、考点及疑点注释1. In 1972, it was discovered that they are endangered.(P119)1972年，人们发现它们已经濒于灭绝。
was discovered是一般过去时的被动语态，discover“发现”，近义词为find和invent。
【友情链接】discover, invent与find◎discover指发现过去所不知道的东西，新奇或意外的东西。
Coal was first discovered and used in China.中国首先发现并使用了煤。
Columbus discovered America on the 12th of October, 1492.1492年10月12日，哥伦布发现了美洲。
◎invent意为“发明”，即创造出以前从未存在过的东西。
Edison invented the electric lamp.爱迪生发明了电灯。
Radio had just been invented then.那时无线电刚刚发明出来。
◎find意为“找到”，侧重于找到过去丢失的人或物，但有时也表示凭经验或偶然发现了一种东西。
Today, corn is found all over the world.今天，全世界都有了玉米。
She found him a very good pupil.她发现他是个非常好的学生。
◎有时find和discover可以互相替代，意思相同。
His notebook was found/discovered in the desk.他的笔记本是在课桌里找到的。
2. Some of the swamps have become polluted. (P119)一些沼泽地受到了污染。
have become polluted 中的become是连系动词，polluted是过去分词。
人教版九年级英语下册Unit 13 We’re trying to save the earth!要点详解
Unit 13 We’re trying to save the earth!要点详解1. We’re trying to save the earth!我们正尽力拯救地球！(1) 本句时态为现在进行时，表示现阶段正在做的事情。
现在进行时所表示的动作并不一定在说话人的说话时刻进行，而是在包括说话时刻在内的一段时间当中进行。
例如：George is translating a book now. 乔治现在在翻译一本书。
（说这句话时，乔治不一定正在翻译；但在包括“说话时刻”在内的一段时间当中，乔治是在从事翻译工作。
）(2) try to do 表示“设法或尽力去做某事”，实际上做与不做，视情况而定，而try doing表示“试着做”，即动作真的进行了或正在进行，成败则视结果而定。
例如：He tried to read, but he was too tired to read much.他想设法看书，但太疲倦了，没看多少。
He tried reading, but that could not make him forget his trouble.他试着看书，但这并没使他忘记烦恼。
2. I am like this animal because I am strong and intelligent.我像这种动物，因为我强壮而聪明。
(1) like在本句中做介词，意为“像”，例如：He looks like winning the race.他看来要在比赛中获胜。
She is like her mother.她像她的妈妈。
(2) like做介词时可用very，very much，rather，quite等副词修饰。
例如：You look very much like your father.你与你父亲很相像。
3. Some of the swamps have become polluted。
一些沼泽已被污染了。
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Unit 13 We are trying to save the earth!
一．教材知识详解
Section A
1.The air has become really polluted around here.
(1)现在完成时（复习）
(2)become
2.Well, cut down air pollution, we should take the bus or subway instead of driving.
(1)cut down
(2)instead of 与instead
3.There are other advantages of bike riding. It’s good for health and it doesn’t cost anything!
考点：advantage
4.And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.
(1)remember to do remember doing
(2)系动词keep
(3)everyone与every one
5.Many have heard of shark fin soup.
hear of 听说
hear短语归纳：
6.When people catch sharks, they cut off their fins and throw the shark back into the ocean.
cut off 连接名词或代词时，名词或代词应放在_________________________
cut短语归纳：
off短语归纳：
7.This method is not only cruel, but also harmful to the environment.
(1)cruel
(2)not only...but also
(3)be harmful to
8.So far, no scientific studies have shown that shark fins are good for health, so why eat them
考点：so far
9.Many believe that sharks can never be endangered because they are the strongest in their food chain.
(1)the strongest
(2)Endanger
10.afford /spend/take/cost/pay
Section B
1.Do you often throw away things you don’t need anymore
考点：throw away
2.Have you ever thought about how these things can actually be put to good use (1)think about
(2)put ...to good use
*put 其他短语：
3.She lives in a house in the UK that she built herself out of rubbish.
(1)built...out of sth
(2)定语从句复习
4.The windows and doors come from old buildings around her town that were pulled down.
考点：pull down
*pull其他短语：
5.She opened a small shop where she sells her bags, and she has also set up a website to sell them on line.
(1)This is the city where I was born.
(2)set up
*set相关短语：
6.Not only can the art bring happiness to others, but it also shows that even cold, hard iron can be brought back to life with a little creativity.
(1)not only...but also...
(2)bring...back to life
(3)others
二．语法复习
1.现在进行时
ed to
3.被动语态
4.现在完成时
5.情态动词【基础训练】【能力提升】。