[外研版]九年级英语上学期Module12Unit3优质课件.ppt

1、Unit 3 Language in use Module 12 Save our world 外研外研九年级上册九年级上册 Language practice Reuse means use again. Though pollution is heavy now, I dont think its hopeless. Make 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. 1 -able -ful i

2、m- -less re- un- A B care collect hope possible use usual wanted waste Now work in groups. Play the guessing game English for Fun. 1 full of care _ 2 can be collected _ 3 full of hope _ 4 without any hope _ careful English for Fun collectable hopeful hopeless 5 not possible _ 6 not usual _ 7 without

3、 any use _ 8 use again _ 9 not wanted _ 10 making a lot of waste _ useless impossible wasteful unusual reuse unwanted Learning to learn Sometimes if you know the meaning of the parts of a word, you can work out the meaning of the whole word. re+ new+ able: re= again, able=can be renewable=can be new

4、 again 构词法构词法： 合成法合成法 派生法派生法 转化法转化法 Grammar 一、合成法一、合成法 将两个或两个以上独立且语义不同的的单词合在将两个或两个以上独立且语义不同的的单词合在 一起构成新词的方法叫做合成法。如：一起构成新词的方法叫做合成法。如：afternoon、 kind-hearted、maybe 等等。掌握合成法有助于我们等等。掌握合成法有助于我们 理解和记忆更多单词。理解和记忆更多单词。 在一个单词前或后加上一个词缀，就可以构成一在一个单词前或后加上一个词缀，就可以构成一 个新词，这种方法叫做派生法。根据词缀的个新词，这种方法叫做派生法。根据词缀的位置位置， 分为分

5、为前缀前缀和和后缀后缀两种。掌握一些常见的词缀，对单两种。掌握一些常见的词缀，对单 词的记忆和理解有很大的帮助。比如：我们学会词的记忆和理解有很大的帮助。比如：我们学会 care, 就能掌握就能掌握careful, careless, carefully, carelessly。 下面我们来学习几个常见的前、后缀：下面我们来学习几个常见的前、后缀： 二、派生法二、派生法 1. 表示否定意义表示否定意义 “无，不”的前缀：“无，不”的前缀： impatient, impossible un - in - dis - im - non- unable, unhappy inexpensive, i

6、ndecision disagree, dislike non-smoker 前缀：前缀： 2. 表示表示 “再”的前缀：“再”的前缀： re- rewrite, reuse, recycle 3. 表示表示 “错误地”的前缀：“错误地”的前缀： mis - mislead , misunderstand 4. 表示表示 “在“在之间，相互”意思的前缀：之间，相互”意思的前缀： inter- 表示“在表示“在之间，相互”：之间，相互”：Internet 后缀：后缀： 1. able表示“可能，易于，适合于”，表示“可能，易于，适合于”， 构成形容词，构成形容词， 如：如：renewable,

7、eatable(可吃的可吃的)，enjoyable 常见的后缀：常见的后缀： 2. ful表示“充满表示“充满的，具有的，具有性的”，性的”， 构成构成 形容词，如：形容词，如：helpful, hopeful, powerful , useful, careful, beautiful 3. less 与与-ful 相反，表示“少的，不足的”，构成相反，表示“少的，不足的”，构成 形容词，如：形容词，如：helpless, hopeless, powerless, useless, careless 1. 动词变名词：动词变名词： -ation -ment -er -or invitatio

8、n, education, agreement, government teacher, worker visitor, sailor 让我们来看一些不改变词根的基本意义，让我们来看一些不改变词根的基本意义， 而是改变了词性的后缀而是改变了词性的后缀 2. 形容词变名词：形容词变名词： -ness -ty happiness, meanness, carelessness activity, safety 3. 名词、形容词变动词：名词、形容词变动词： -ify -ize -en beautify, simplify realize quicken, widen, sharpen 4. 名词变

9、形容词：名词变形容词： -y -ous -ful windy, rainy, sandy dangerous, humorous helpful, careful, peaceful 英语构词法中把一种词性用作另一种词性而词形英语构词法中把一种词性用作另一种词性而词形 不变的方法叫做转换法。不变的方法叫做转换法。 三、转换法三、转换法 (1)动词转化为名词动词转化为名词 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动词 She gave me a cup of water. Yo

10、u 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. （黑衣服）（黑衣服） Complete the sentences with the words in the box. 2 hopeful impossible reuse unhealthy wasteful 1 Polluted water is _. 2 It is _ to throw so much food away. u

11、nhealthy wasteful 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 short time. 5 If we pay attention to pollution now, the future will be _. reuse impossible hopeful Complete the table. 3 Noun Verb Adjective Adverb useful/useless hope hop

12、efully/hopelessly pollution use use usefully/uselessly hope hopeful/hopeless pollute polluted/unpolluted Noun Verb Adjective Adverb water waste usually/unusually water waste wasteful/ wasted wastefully usual/ unusual Complete the sentences with the correct form of the words in Activity 3. 4 She was

13、_ that her new job would make her more successful. hopeful 1. The factory _ the river, and the fish died. polluted 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. water waste

14、ful usual/useful Complete the sentences. 5 A _ is a box that you keep your lunch in. lunchbox 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 at school. classroom postcard 3 A _ is a book that has one or more stories for children. 4 A

15、 _ is a black board that is used at school for writing on with chalk. blackboard storybook Work in pairs. Look at the pictures and answer the questions. 6 1 What kinds of things can be recycled ? 2 How can these things be reused? 3 How does this help the environment? 4 Have you ever recycled or used

16、 things that can be recycled? How? Complete the conversation with the correct form of the expressions in the box. 7 be good for throw away turn off worry about 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

17、the environment? worried about Mike: 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 leave a room. Dont tell me I shouldnt travel by plane any more! throw away turn off Ken:

18、 Mike: 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. are good for Good! So I can enjoy my holiday, and when I come back, Ill plant some tree

19、s! Thats the idea! Maybe we can all join in and start a small forest! Ken: Mike: Listen and check () the true sentences. 8 1. Its 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. Tak

20、e 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 again and complete the table. 9 Advice Reasons 1 Dont throw away things made of _ , but _ them.

21、 Throwing things away is wasteful. 2 _ your plastic bags when you can and _ with you when you go shopping. Plastic bags _ recycle. glass, plastic and paper recycle Reuse take a bag are hard to Advice Reasons 3 Use less electricity and oil to _. 4 Dont leave lights on and _. 5 _ and do not often driv

22、e your car. Producing electricity and using oil may cause _. reduce polltion waste electricity Walk or cycle pollution Reuse and recycle Its a waste to throw used things away. Dont throw away things made of glass, plastic and paper, but recycle them if possible. Plastic bags are hard to recycle, so

23、reuse the old ones when you can. Take a bag with you when you go shopping. Tapescript Reduce pollution Producing electricity and using oil may cause pollution of the air, water and earth in many different ways. If we use less electricity and oil, we can reduce pollution. Here is some advice: dont le

24、ave lights on and waste electricity; walk or cycle, and dont drive a car unless you have to. Walking and cycling are good for your health too! Earth Hour 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

25、do this to show their awareness of climate change. The first 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

26、Building and the Golden Gate Bridge will go dark. Module task: Discussing what you can do about pollution Work in groups. Decide what kind of pollution you want to talk about. 10 Choose a subject that you care about the most. It could be water pollution, air pollution, etc. Find out more information

27、 about your subject. Look it up on a website or in a books. Discuss your subject. Take turns to say what you think about the problem and what can be done. Listen to what others say. If you agree with what they have said, say I agree, Thats true or Thats a good point; if you do not agree with what so

28、meone says , say Im sorry, but I dont agree. I think that . 11 Present your groups ideas to the whole class. 13 一、根据句意，用括号内单词的正确形式填空。一、根据句意，用括号内单词的正确形式填空。 1. There is a place in my heart where all nations will live _ (peace) some day. 2. There are many _ (different) between the twins. One is shy, bu

29、t the other is outgoing. peacefully differences Exercise 二、单项选择。二、单项选择。 1. There are _ sharing bikes in many cities. So there will be _ pollution. A. less and less; more and more B. less and less; fewer and fewer C. more and more; less and less D. fewer and fewer; less and less 2. What a mess! The s

30、haring bikes are thrown everywhere. Lets collect and put them in the right place _ they can be used conveniently. A. unless B. so that C. because D. so long as 3. The apple pies here taste _ than those from anywhere else. Yes. But it will be better if they are _. A. more delicious; more expensive B. less delicious; more expensive C. more delicious; less expensive D. less delicious; less expensive