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1、Module 12 Save our worldUnit 3 Language in use1 Language practice Reuse means “use again”. Though pollution is heavy now, I dont think its hopeless. 2Make new words. Join the parts of words in Box A with the words in Box BYou need to use some of the parts more than once.A B carecollecthopepossibleus
2、e usualwantedwaste-able-able-ful-fulim-im-less re- un-less re- un-3 Learning to learnSometimes if you know the meaning of the parts of a word, you can work out the meaning of the whole word. renewable：re=again, able=can be，renewable=can be new again4 构词法构词法1. 合成法合成法将两个或两个以上独立且将两个或两个以上独立且语义不同的单语义不同的单
3、词合在一起构成新词合在一起构成新词的方法叫做合成法。合成法是一种比较灵活的构词方法，词的方法叫做合成法。合成法是一种比较灵活的构词方法，可以合成名词、形容词、副词、代词、动词等。可以合成名词、形容词、副词、代词、动词等。例如：例如：afternoon, sportsman, blackboard, sportsperson, newspaper, airplane, classmate, grandfather 等就是通过合成构词法构等就是通过合成构词法构成的名词；成的名词；kind-hearted, middle-aged, hard-working 等为等为合成形容词；合成形容词；howe
4、ver, maybe, himself, everyone, nothing, overlook 等也都是通过合成法构成的单词。等也都是通过合成法构成的单词。52. 派生法派生法 通过在词根前面加前缀或在词根后通过在词根前面加前缀或在词根后面加后缀构成一个新词的方法叫作派生面加后缀构成一个新词的方法叫作派生法。要通过派生法理解和记忆单词法。要通过派生法理解和记忆单词, 我我们需要掌握常见的前缀和后缀及派生规们需要掌握常见的前缀和后缀及派生规律。律。6前缀前缀含义含义例词例词dis-不不disagree, dislikeen-使使处于某种状态处于某种状态enable, enrichim-, in
5、-不不Impossible , impatient, inexpensiveinter-在在之间；相互之间；相互international, interconnectmis-错误地错误地mislead, misunderstandnon-不不, 非非non-smoker, non-nativere-再再, 重复重复rewrite, retellun-不不unable, unhappy, unpopular 常见前缀常见前缀7work out解决；计算；产生结果；设计出解决；计算；产生结果；设计出这里的这里的go为系动词。英语系动词的功能主要是为系动词。英语系动词的功能主要是把表语和主语联系在一
6、起，说明主语的属性、把表语和主语联系在一起，说明主语的属性、特征或状态。系动词不能在句中独立作谓语，特征或状态。系动词不能在句中独立作谓语，必须和后面的表语一起构成句子的谓语。必须和后面的表语一起构成句子的谓语。8 某些含有变化意义的动态系动词如某些含有变化意义的动态系动词如get, become, grow, turn等的进行时态可与形容词的比较级连等的进行时态可与形容词的比较级连用，表示渐进过程，其意思是用，表示渐进过程，其意思是“越来越越来越”。eg：He is growing taller and taller. 他长得越来越高了。他长得越来越高了。 Our life is getti
7、ng better and better. 我们的生活越来越好了。我们的生活越来越好了。9get“变得变得”，在口语中用得很多。，在口语中用得很多。become“变成，成为变成，成为(好坏情况均可好坏情况均可)”。后接形容。后接形容词、名词、过去分词作表语。词、名词、过去分词作表语。go“变得变得(某种由好到坏的情况某种由好到坏的情况)”，可表示颜，可表示颜色的变化或语态的变化。色的变化或语态的变化。turn“变成变成”，强调与原来不同的、新的变化，强调与原来不同的、新的变化，如变质、变色等。如变质、变色等。grow“逐渐变得逐渐变得”，强调其变化过程。，强调其变化过程。 易混系动词的区别易混
8、系动词的区别get, become, go, turn, grow “变得变得”10care for与与care about的意义、用法的意义、用法区别区别careabout在乎，在乎，关心关心I dont care about your opinion.我不在乎你的意见。我不在乎你的意见。Dont you care about anybody?你难道谁也不关心吗？你难道谁也不关心吗？11carefor 喜欢，喜欢，照顾照顾She doesnt care for that colour.她不喜欢那种颜色。她不喜欢那种颜色。He cared for his sick mother day and
9、 night.他日夜照顾生病的母亲。他日夜照顾生病的母亲。12 Complete the sentences with the words in the box. hopeful impossible reuse unhealthy wasteful1. Polluted water is _.2. It is _ to throw so much food away.3. If you look after things well, you may _ some of them later.4. It is _ to clean up the whole river in such a sh
10、ort time.5. If we pay attention to pollution now, the future will be _.13NounVerbAdjectiveAdverbuseful/uselesshopehopefully / hopelesslypollutionwaterwasteusually/unusuallyComplete the table.14Work in pairsLook at the pictures and answer the questions.1.What kinds of things can be recycled?2. How ca
11、n these things be reused?3. How does this help the environment?4. Have you ever recycled or used things that can be recycled? How?15Complete the conversation with the correct form of the expressions in the box. be good for throw away turn off worry about Mike: I hear you are off to the Caribbean for
12、 a holiday! Lucky you! But arent you （1）_ the pollution that such long plane journey may cause for the environment?16Ken: I know, but what can I do about it? Ive already tried my best to protect the environment. I recycle. I dont (2）_ _ things if I dont want them any more. I （3）_ the lights when I h
13、ave a leave a room. Dont tell me I shouldnt travel by plane any more! 17Mike: No, of course not. But we can do more to protect the environment. For example, we can help keep the air clean by planting trees. Trees(4)_ the environment. In this way, we can reduce the harm of pollution.18Ken: Good ! I c
14、an enjoy my holiday, and when I come back, Ill plant some trees!Mike: Thats the idea! Maybe we can all join in and start a small forest!19 Module taskDiscussing what you can do about pollutionWork in groups. Decide what kind of pollution you want to talk about.Choose a subject that you care about the most. It could be water pollution, air pollution, etc.Find out more information about your subject. Look it up on a website or in a book.20Homework Finish the exercises in Learning English. Review the new words and language points in Module 12.21
