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Unit 13 We're trying to save the earth! 乱扔v. 垃圾；废弃物n.
底部；最下部n.
渔民；钓鱼的人n.
煤；煤块n.
公众的；公共的adj.
民众；百姓n.
丑陋的；难看的adj.
优点；有利条件n.
花费v.花费；价钱n.
木制的；木头的adj.
塑料的adj.塑料；塑胶n.
有关系，作用，影响
鲨鱼n.
（鱼）鳍n.
割掉；砍掉
方法；措施n.
残酷的；残忍的adj.
有害的adj.
链子；链条n.
生态系统n.
（数量等）减少的；低的；矮的a. 工业；行业n.
法律；法规n.
可重复使用的;可再次使用的adj. 承担得起（后果）；买得起v.
运输业；交通运输n.
回收利用；再利用v.
餐巾；餐巾纸n.
颠倒；倒转
大门n.
瓶；瓶子n.
负责人；主席；总统n.
灵感；鼓舞人心的人（或事物）n. 金属n.
创造力；独创性n.
野生救援协会（美国）
世界自然基金会。
Unit 13 We’re trying to save the earth教材分析本单元带领学生了解了一些有关地球污染，动物濒危等问题。
并且教给大家如何保护濒危动物，如何通过回收利用等方式来保护地球。
本单元主要复习语法内容为情态动词和动词形式变化。
本课主要带领大家进行语法复习，巩固语法知识。
一、三维目标(一) 知识与技能1. To learn different forms of verb.2. To understand the use of Modal Verbs.(二) 过程和方法3. To know how to use different forms of verb in different situations.4. To know how to use Modal Verbs in different situations.(三) 情感态度和价值观5. After learning this part, every student will be able to describe theirawareness of the serious situation of pullution and solutions to environmental problems using what we have learned in this lesson.教学重点1. To change forms of verb according to specific situation.2. To use Modal Verbs properly.教学难点1. To change forms of verb according to specific situation.2. To use Modal Verbs properly.二、教学策略根据本课教学目标和重点内容，教师可采用读，小组讨论，口头及书面练习等活动来引导学生进行学习。
Unit 13 We’re trying to save the earth!知识导航语言目标谈论污染和环境保护。
Section A 重点单词1. litter v.乱扔n.垃圾2. bottom n.底部3. coal n.煤4.ugly adj.丑陋的 5. cost v.花费n.花费 6. wooden adj.木制的 (wood n.木材) 7. plastic adj.塑料的n.塑料 8. method n.方法 9. cruel adj.残酷的 10. harmful adj.有害的 (harm n.害处) 11. industry n.工业 12. law n.法律 13. afford v.承担得起重点短语1.make a difference 起作用；有影响2. take part in 参加3. turnoff 关掉4. pay for 付费；付出代价5. cut down 减少6. lead to 导致7.hear of 听说 8. cut off 切除重点句型1.We’re trying to save the earth. 我们在努力拯救地球。
2. The rive used to be so clean. 这河流过去是如此的清澈。
3. The air is badly polluted. 空气被严重污染。
4. The method is not only cruel, but also harmful to theenvironment. 这种方法不仅残酷，而且对环境也有害。
Section B +Self Check 重点单词1. recycle v.回收利用2. gate n.大门3. bottle n.瓶子4.president n. 负责人 5. work n.作品 6. metal n.金属重点短语1. throw away 扔掉2. put sth. to good use 好好利用3. put …down 拆下 4. upside down 上下颠倒 5. bring back 恢复重点句型1. And the gate in front of her house is made of rocks and oldglass bottles. 她房子的前门是由岩石和旧玻璃瓶子制成的。
2. Not only can the art bring happiness to others, but it alsoshows that even cold, hard iron can be brought back to life witha little creativity. 不仅艺术品能给人们带来快乐，而且冰冷坚硬的钢铁在艺术创作下也恢复了生命。
核心语法1. 复习现在进行时、used to句型、被动语态、现在完成时和情态动词。
Section A (1a-2d)【基础预习】I. 写出下面单词的意思。
1. littler ______2. bottom ________3. fisherman _____ 3. coal __________5. ugly ________6. advantage ______7. cost ________ 8. wooden ________9. plastic _______II. 把下面的短语与汉语意思搭配。
1. make a difference A. 参与2. cut down B. 充满3. lead to C. 减少4. be full of D. 起作用5. play a part in E. 导致【重点讲练】1. The air has become really polluted around here. 这儿的空气已经被污染了。
辨析：turn, get 与become⑴ become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 teach er. 他成了一名老师。
⑵ 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。
⑶ 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。
【小试牛刀】用turn, get 和become填空。
① Her mother ____ angry when she heard the news.②It’s _____ darker and darker outside.③ The milk has _____ bad.2. 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。
You’d better cut the article down to about 2,000 words. 你最好能把这篇文章压到两千字左右。
【拓展】cut down 还可表示“砍倒”的意思。
They cut down the big tree. 他们砍倒了这棵大树。
cut off 切断；切除cut into 把……切成……cut up 切碎cut in 插队【小试牛刀】单项选择—Did you tell it to Jack?—Yes, but we were ____ in the middle of our telephone conversation.A. cut downB. cut offC. cut upD. cut into3. It’s good for health and it doesn’t cost anything! 它对身体有好处并且不会花费任何东西。
花费主语表示的内容spend 人宾语可以是钱、精力、时间等。
cost 物或事后接life, money, health,time等，侧重于“花费”的代价。
take 事或人它说明事情完成“花费了……”。
pay 人意思是“支付”，作为及物动词，宾语可以是“人”、“钱”pay for 人宾语为“物”、“事”，for表示支付的原因【小试牛刀】单项选择1. —Do you take exercise every day?—Yes. I always ___thirty minutes after supper.A. spendB. costC. takeD. pay2. I _________ $300 for the bike.A. tookB. spentC. costD. paid【达标训练】Ⅰ. 用方框中所给词的适当形式填空。
cost, wood, coal, bottom,litter1. Don’t throw _____ (垃圾) everywhere.2. In winter, many people burn ____ (煤) to keep warm.3. The police found a body at the ____ (底部) of the lake.4. The _____ (费用) of living in big cities is very high.5. He keeps a rabbit in a big ____ (木制的) box.II. 单项选择。
1. He ____ go out with his parents, but now he ____ staying at home alone.A. used to; is used toB. is used to; used toC. use to; is used toD. is used to; is used to2. The interesting book _____ me 10 yuan.A. spentB. tookC. paidD. cost3. We must do something useful to ____ pollution.A. cut offB. cut upC. cut downD. cut in4. Smoking can _____ lung cancer. You’d better give it up.A. work onB. l ead toC. take awayD. put out5. —What are the _____ of bike riding?—It can help cut down air pollution.A. advantagesB. reasonsC. resultsD. ideasIII. 根据汉语提示完成下面的句子。
1. 多一个人少一个人无所谓。
One person wouldn’t ____ ____ ____.2. 这个木箱时装满了书。
The ____ box ____ ____ ____ books.3. 不健康的饮食对这种疾病的传播起一定的作用。
Unhealthy foods ___ ___ ___ ___ the spread of the disease.4. 这条小路通向公园。
The path ____ ____ the park.5. 我错拿了你的包。
I took your bag ____ ____ mine by mistake.Section A (3a-4c)【基础预习】I. 根据汉语提示写出下面句中所缺的单词。
1. I have a simple and easy ____ (方法) to solve the problem.2. We shouldn’t be ____ (残忍的) to animals.3. It’s ____ (有害的) to your health to drink to much.4. The city is the _____ (工业) center of the country.5. The car is too expensive, I can’t ___ (买得起) it.II. 写出下面短语的意思。
1. take part in __________2. turn off ____________3. pay for ____________4. hear of _____________5. be harmful to ___________【重点讲练】1. The method is not only cruel, but also harmful to the environment. 这种方法不仅残酷，而且对环境也有害。
