牛津版（深圳 广州）英语九下 Unit 3 The environment 第2课时（Reading阅读）导学案（无答案）

1、第2课时 Reading阅读课堂精讲 重点语句解析一、课本原文The world is in dangerOur world is in danger. We must do something to protect the environment. But, what are the main problems we face?The greenhouse effectThe atmosphere around the Earth is necessary for all living things. It is like the glass of a greenhouse, letting

2、 sunlight in and keeping heat from getting out. Without it, the Earth would be the same as the Mooncold and lifeless.When we burn fuels such as petrol and coal, we produce a gas called carbon dioxide (CO2). Too much of this gas pollutes the atmosphere, and causes it to keep in too much heat. As a re

3、sult of the greenhouse effect, the Earths temperature is increasing. This causes sea level to rise, and in the future may cause cities to disappear.Cutting down forests Every year, we destroy nature by cutting down huge areas of forests. This makes the greenhouse effect worse because trees take in C

4、O2 and produce oxygen. Cutting down trees also destroys the homes of the animals that live in our forests, and causes the surface of the soil to be easily destroyed by rain. This can result in floods and even more damage to the environment.Bad habitsMany of our habits cause pollution. People often u

5、se things once and then throw them away, or leave them on the ground as litter. This creates mountains of rubbish and pollutes our land and seas.In order to protect the environment, we need to take proper action. We should be different from many consumers and become “green consumers”. This means tha

6、t we should only buy and use products friendly to the environment. We should also recycle as many things as we can. We can reuse things for the same purpose as before, or we can use them for new purposes. If we just learn to live in new and different ways, we can make a difference.试试你的翻译能力_二、重点语句解析1

7、. Without it, the Earth would be the same as the Moon-cold and lifeless. (P35，L8)没有大气层，地球会变得跟月球一样阴冷而没有生气。解析(1)本句是虚拟语气，句中的without 相于if there werent 。使用虚拟语气时，若表示与现在事实相反，则从句要用一般过去时(be用were不用was)，主句用would/should/could/might+动词原形。(2)(be)the same as表示“类似，相同”，通常指某个事物跟另一个事物很像。举例Without the Sun, nothing woul

8、d grow.没有太阳，什么东西都不会生长。His last name is the same as mine.我们同姓。运用(1)We couldnt finish our work so early _ your help. Thank you!(2)这条连衣裙跟我的一样。(汉译英)_2. When we burn fuels such as petrol and coal, we produce a gas called carbon dioxide (CO2).(P35，L11)当我们燃烧如汽油和煤这些燃料时，我们产生一种叫二氧化碳的气体。解析when在句中引导时间状语从句。而call

9、ed carbon dioxide则充当后置定语，修饰gas。举例It happened when I was living in the country.这事发生在我住在农村的时候。Have you seen the movie called Monster Hunt?你看过捉妖记这部电影吗？运用(1) _ the dinner was all over, everyone helped wash the dishes.A. How B. When C. Before(2)Once there lived a farmer _ (call) Henry. 3. Cutting down tr

10、ees also destroys the homes of the animals that live in our forests, and causes the surface of the soil to be easily destroyed by rain. (P35，L29) 乱砍滥伐也会破坏生活在森林里的动物的家园，使得土壤表面很容易被雨水破坏。解析 cutting down trees为名词短语作主语，表示一般的行为，通常后面接动词的第三人称单数形式。to be easily destroyed by rain为不定式的被动结构作后置定语修饰soil。举例Seeing is

11、believing.眼见为实I wanted the letter to be typed at once.我想马上把信打好。运用(1)Getting up early is good for your health.(英译汉)_(2)Someone took away my umbrella. Id never expect it _ (return).4. In order to protect the environment, we need to take proper action. (P35，L46)为了保护环境，我们需要采取合理的措施。解析in order to意为“为了”，常位

12、于句首作状语，相当于to ；位于句中时相当于so as to。举例He got up early in order to catch the first bus.他早起是为了赶头班公交车。运用We should work hard so as to pass the exam.(同义句转换)We should work hard _ _ _ pass the exam.5. If we just learn to live in new and different ways, we can make a difference. (P35，L59)如果我们学会用新的不同的生活方式生活，我们能(对

13、保护环境)产生不可或缺的影响。解析 if在句中引导条件状语从句，表示一种虚拟的条件或假设。通常需遵循“主将从现”的原则。举例 If you run, youll get there in time.如果你跑的话，你就会及时赶到那儿。运用如果不下雨，我们就去。(汉译英)_课堂精练.翻译下列短语 1.温室效应_2.在危险中_3.由于_4.造成；导致_5.许多；大量_6.采取行动_7.有作用；有影响_8.在将来_9.吸收_10.为了_.用所给单词的正确形式填空 1.Im _ (concern) that they may lose their way. 2. The Earth will becom

14、e cold and _ (life) without sunshine. 3. Im learning German, but I still cant speak it _ (proper). 4. We had better buy and use products which are _ (friend) to the environment. 5. The house was _ (destroy) by the earthquake. 6. We should try our best to fight against _ (nature) disasters.课文语法填空 根据所

15、学课文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。Our world is facing many 1._ (problem). One of them is the greenhouse effect. That is, the atmosphere around the Earth can let sunlight in and prevent heat from 2._ (get) out. But now its polluted by too much CO2 so that it keeps in too much heat.

16、As a result, the temperature is getting higher and sea level rises. Another problem is cutting down forests. It not only makes the greenhouse effect 3._ (bad) but also destroys the homes of the animals that live in the forests. In addition, it makes the soil easy to 4._ (wash) away by rain, which ca

17、n result 5._ floods and other disasters. The third problem is 6._ (we) bad habits, such as using things 7._ (one) and throwing rubbish everywhere. Such habits create lots of rubbish and cause pollution. 8._ we want to protect the environment, we should take action now. We should buy and use environm

18、ent-friendly products and meanwhile try our best 9._ (recycle) and reuse things. Only in this way can we play 10._ active role in protecting the environment.信息匹配下面的材料AF分别对不同垃圾的处理提出了相应的建议。请为五位学生选择一个合适的建议。A. Hazardous (有害的) Waste Dustbin. It contains waste involving risk or danger, especially dangerou

19、s to peoples health or safety but not including medical waste.B. Residual (残余的) Waste Dustbin. It collects china, used pottery and polluted things like dirty tissue, dirty diapers (尿布), one-off meal boxes and so on.C. Household Food Waste Dustbin. It is used to collect kitchen waste like skins of fr

20、uits, egg shells, leaves of plants, etc.D. Recyclable Waste Dustbin. It is used for collecting all kinds of environmental-friendly and recyclable materials including paper, metal and so on.E. Medical Chemical Waste Dustbin. Used chemical reagents (化学试剂), used chemical disinfectant (化学消毒剂) are collected here.F. Medical Infection Waste Dustbin. It collects anything used for preventing virus infection like mask