1、How to be greenReduceReuse_Recycle1.合成法合成法 将将_独立且语义不同的单词独立且语义不同的单词合在一起构成新词的方法。合在一起构成新词的方法。(1)合成合成名词名词 home+work foot+ball(2)合成合成形容词形容词 hard+working easy+going(3)合成合成动词动词 down+loadhomeworkfootballhardworkingeasygoingdownload两个或两个以上两个或两个以上合成名词afternoon,sportsman,blackboard,newspaper,airplane,classmate
2、合成形容词 kind-hearted,middle-aged,hard-working合成副词 however,maybe合成代词 himself,everyone,nothing合成动词 overlookGrammar忽略Ex.5 Complete the sentences.(P101)A _ is a box that you keep your lunch in.1.A _ is a card that you write on one side of and send to someone by post.2.A _ is a room where you have classes
3、at school.3.A _ is a book that has one or more stories for children.4.A _ is a black board that is used at school for writing on with chalk.postcardclassroomstorybookblackboardlunchbox2.派生法派生法 通过在通过在_前面加前面加_或在或在_后面加后面加_构成一个新词的方法。构成一个新词的方法。要通过派生法理解和记忆单词要通过派生法理解和记忆单词,我们我们需要掌握常见的前缀和后缀及派生规律。需要掌握常见的前缀和后缀
4、及派生规律。词根词根前缀前缀词根词根后缀后缀(1)常见前缀常见前缀I.im-,un-,in-,dis-等，表示否定。等，表示否定。possible-happy-correct-agree-impossibleunhappyincorrectdisagreeun -in -dis-im -non-unable,unhappyinexpensive,indecision disagree,dislike impatient,impossiblenon-smoker 4.anti-表示表示“反对，防止反对，防止”。war-antiwarrebuild2.re-,表示重复表示重复 build-rewr
5、ite,reuse,recyclemis-mislead,misunderstand3.mis-表示“错误地”的前缀：5.表示“在之间，相互”意思的前缀：inter-表示“national-net -internationalinternet前缀含义例词 dis-不 en-im-,in-不 inter-mis-non-re-un-不 disagree,dislikeenable,enrichimpossible,impatient,inexpensiveinternational,interconnectmislead,misunderstandnon-smoker,non-nativerew
6、rite,retellunable,unhappy,unpopular使处在某种状态在之间错误的不，非再，重复后缀含义例词-er,-or构成名词-ian-ing-ist-ment-ness-th-tion-ty 常见后缀常见后缀 teacher,worker,visitormusicianbuilding,painting,shopping artist,scientist agreement,government coldness,happiness,illness truth,warmthcompetition,education,informationactivity,safety后缀含
7、义例词-able,-ible构成形容词-al-ful-ive-less-ly-ous-teen构成数词-th-ty-ly 构成副词comfortable,eatable,enjoyable,believable,respectable environmental,international careful,helpful active,expensivecareless,helpless,homelessfriendly,lovely,monthlydangerous,famouseighteen,fifteen,seventeenfifteenth,fifth,fortieth forty,
8、sixty,twenty badly,carefully,happilyMake a new words.Join the parts of words in Box A with the words in Box B.You need to use some of the parts more than once.A able -ful im-less re-un-B care collect hope possible use usual wanted wasteEx.1 (P100)由由 care 可以派生出：可以派生出：care carefulcareless由由 collect 可以
9、派生出：可以派生出：collect collectable由由 hope 可以派生出：可以派生出：hope hopefulhopeless由由 possible 可以派生出：可以派生出：possible impossible由由 use 可以派生出：可以派生出：use usableuseless由由 usual 可以派生出：可以派生出：usual unusualusefulreuse由由 wanted 可以派生出：可以派生出：wanted unwanted由由 waste 可以派生出：可以派生出：waste wastefulcareful,careless,collectable,hopefu
10、l,hopeless,impossible,usable,useful,useless,reuse,unusual,unwanted,wasteful,Now work in groups.Play the guessing game.1.full of care _2.can be collected _3.full of hope _4.without any hope _5.not possible _6.not usual _7.without any use _8.use again _9.not wanted _10.making a lot of waste _carefulco
11、llectablehopefulhopelessimpossible unusual uselessreuseunwantedwastefulComplete the sentences with the words in the box.hopeful impossible reuse unhealthy wasteful 1.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 cle
12、an up the whole river in such a short time.5.If we pay attention to pollution now,the future will be _.unhealthywastefulreuseimpossiblehopeful3.转化法转化法 把一种把一种_转化为另一种转化为另一种_而而_不变不变的方法称作转化法。常见的转化有：的方法称作转化法。常见的转化有：(1)动词动词名词名词 Lets talk about it more.I think wed better finish the talk now.(2)名词转化为动词名词转化为
13、动词 She gave me a cup of water.You should water the flowers twice a day.(3)形容词转化为名词形容词转化为名词 She was wearing a black dress.The girl in black looks very beautiful.v.谈论谈论n.谈话谈话n.水水v.浇水浇水adj.黑色的黑色的n.黑色黑色词性词性词性词性词形词形Ex.3 Complete the table.(P101)NounVerbAdjectiveAdverb useful/uselesshopehopefully/hopeless
14、lypollutionwaterwasteusually/unusuallyuseuseusefully/uselesslyhopehopeful/hopelesspollutepolluted/unpollutedwaterwastewasteful/wastedwastefullyusual/unusualEx.4 Complete the sentences with the correct form of the words in Activity 3.She was hopeful that her new job would make her more successful.1.T
15、he factory _ the river,and the fish died.2.We often walk in the countryside.It is a(n)_ activity for us.3.Do not use so much water.It is very_.4.To keep the flowers growing,you need to _ them once a day.pollutedusualwastefulwaterWork in pairs.Look at the pictures and answer the questions.1.What kind
16、 of things can be recycled?2.How can these things be used?3.How does this help the environment?4.Have you ever recycled or used things that can be recycled?How?possible answers:Cloth,paper,cans,plastic,glass,etc.Recycled paper can be used for notebooks,tickets or writing paper.It helps save a lot of
17、 resources and reduce greenhouse gas emissions.Yes.I recycled aluminum cans and paper by selling them to the recycled factory.6Mike:I hear you are off to the Caribbean for a holiday!Lucky you!But arent you(1)_ the pollution that such long plane journeys may cause for the environment?Ken:I know,but w
18、hat can I do about it?I already try 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 leave a room.Dont tell me I shouldnt travel by plane any more!be good for throw away turn off worry about worried about throw away turn offComplete
19、the conversation with the correct form of the expressions in the box.7Mike: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.Ken:Good!So I can enjoy my
20、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!are good for1.It is OK to throw used things away.Looking after them takes a lot of time.2.Do not throw away things made of glass,plastic and paper,but recycle them when possible.3.
21、Take a bag when you go shopping.4.Producing electricity and using oil will not cause pollution.5.Turn off lights when you do not need them.6.Ride a bike or walk,and do not often drive your car.Listen and check()the true sentences.89Listen again and complete the table.Advice Reasons1.dont throw away
22、things made of _,but _them.throwing things away is wasteful.2._ your plastic bags when you can and _ with you when you go shopping.Plastic bags _ recycle.3.Use less electricity and oil to _.4.Dont leave the lights on and _.5._and do not often drive your car.Producing electricity and using oil may ca
23、use _.glass,plastic and paper recycle Reuse take a bag are hard to reduce pollution waste electricityWalk or cycle pollution v.n.adj.n.1.When is Earth Hour?2.What do people do during Earth Hour?3.When and where was the first Earth Hour held?It was held in 2007 in Sydney.It is held toward the end of
24、March each year.During Earth Hour,people all across the world switch off the lights they do not need.Earth Hour is held toward the end of March each year.During Earth Hour,people all across the world switch off the lights they do not need.They do this to show their awareness of climate change.The fi
25、rst Earth Hour was held in 2007 in Sydney,where more than 2.2 million people switched off their lights.Today,more and more cities are taking part in the event,such as Beijing,London,Rome and New York,and landmarks like the Empire State Building and the Golden Gate Bridge will go dark.Around the world be held switch off awareness of climate change more and more take part in英汉互译：英汉互译：举行关掉；关上气候改变的意识越来越多参加（活动）联想：turn off 关上联想：join 指加入某个组织或团体
