資源簡介

(共24張PPT)
Unit 3
Language in use
Module 12
Save our world
01
學習目標
能熟悉并能正確運用本模塊的單詞和短語
能正確分析構詞法的前綴后綴, 并能對其進行歸納和總結
能夠談論環保措施，并提出有關環保的建議
Warming up
Free talk
Can you say something about the environmental protection measures taken in daily life
Warming up
Free talk
Please explain the words “reduce”, “reuse”, “recycle” in English.
Presentation
-able -ful im- -less re- un-
care collect hope possible use usual wanted waste
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.
A
B
02
新課講授
Now work in groups. Play the guessing game English for Fun.
collectable
hopeful
hopeless
impossible
unusual
useless
reuse
unwanted
wasteful
Summarize the rules of prefix and suffix word-formation.
派生法是英語主要的構詞法。這方法是借前綴或后綴產生出派生詞，主要有名詞、形容詞和動詞三種。前綴以否定前綴un-、in-、im-、il-、ir-、non-、dis-、mis-等為主，使單詞延伸出來的派生詞變成其反義詞。例如：injustice(不公平的)、unhappy(不高興的)、impossible(不可能的)等。
(1)名詞派生詞
balance(平衡)→imbalance(不平衡)；pleasure(高興)→displeasure(不高興)；
management(管理)→ mismanagement(管理不善)；
efficiency(功效)→inefficiency(無效率)等。
Summarize the rules of prefix and suffix word-formation.
(2)形容詞派生詞
accurate(精準，正確)→inaccurate(不正確)；
patient(能忍耐的)→impatient(無法忍耐的)；
regular(有規矩的)→ irregular(不規矩的)；
legal(合法的)→illegal(違法的)等。
(3)動詞派生詞
agree(贊同)→disagree(不贊同)；judge(判斷)→misjudge(對……判斷錯誤)；
treat(款待)→mistreat(虐待)等。
Summarize the rules of prefix and suffix word-formation.
除了否定前綴之外，其他常用的前綴還有 anti-、auto-、bi-、co-、counter-、de-、ex-、inter-、post-、pre-、pro-、re-、sub-、trans-、tri-、ultra-等。
但要注意：英語中的前綴in-、un-通常表示“不”或“……的相反”的含義，因此由其構成的派生詞一般具有否定的意義。然而，有些由這兩個前綴構成的派生詞并非有否定的意義，而與詞根同義或近義。著名學者周海中教授在《in-、un-不一定表示“否定”》一文中就舉了若干個例子，如：
coming/incoming(來到)；habit/inhabit(居住于)；loose/unloose(解開，釋放)；rip/unrip(撕開)等。這類派生詞雖然不多，但值得注意，勿望詞生義。
Complete the sentences with the words in the box.
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 clean up the whole river in such a short time.
5. If we pay attention to pollution now, the future will be ________.
unhealthy
hopeful impossible reuse unhealthy wasteful
wasteful
reuse
impossible
Practice & Listening
hopeful
Complete the table.
Noun Verb Adjective Adverb
useful/useless
hope hopefully/hopelessly
pollution —
water — —
waste
— — usually/unusually
use
use
usefully/uselessly
hope
hopeful/hopeless
pollute
polluted/unpolluted
water
waste
wasteful/wasted
wastefully
usual/unusual
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. The 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.
polluted
usual
wasteful
water
Complete the sentences.
A lunchbox is a box that you keep your lunch in.
1. Α _________ 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.
З. А __________ 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.
postcard
classroom
storybook
blackboard
Work in pairs. Look at the pictures and answer the questions.
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 things that can be recycled How
Complete the conversation with the correct form of the expressions in the box.
Mike: I hear you are off to the Caribbean for a holiday! Lucky you! But aren’t you
(1)______________ the pollution that such long plane journeys may cause for
the environment
Ken: I know, but what can I do about it I’ve already tried my best to protect the
environment. I recycle. I don’t (2)____________ things if I don’t want them any
more. I (3)_________ the lights when I leave a room. Don’t tell me I shouldn’t
travel by plane any more!
be good for throw away turn off worry about
worried about
throw away
turn off
Complete the conversation with the correct form of the expressions in the box.
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.
Ken: Good! So I can enjoy my holiday, and when I come back, I’ll plant some trees! Mike: That’s the idea! Maybe we can all join in and start a small forest!
are good for
be good for throw away turn off worry about
Act out the dialogue in pairs
□
Listen and check (√) the true sentences.
1. 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. 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 again and complete the table.
Advice Reasons
1. Don’t throw away 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. Don’t leave lights on and _________________. 5. ____________ and do not often drive your car. Producing electricity and using oil may cause __________.
glass,
plastic and paper
recycle
Reuse
take a bag
are hard to
reduce pollution
waste electricity
Walk or cycle
pollution
Translate the passage Around the world
地球一小時
“地球一小時”活動在每年三月底舉行。在“地球一小時”活動期間，世界各地的人們都會關掉他們不需要的燈。他們這樣做是為了表明他們對氣候變化的認識。
首屆“地球一小時”活動于2007年在悉尼舉行，當時有超過220萬人熄燈。今天，越來越多的城市參加這一活動，如北京、倫敦、羅馬和紐約，帝國大廈和金門大橋等地標性建筑將變暗。
Language points
1. switch off = turn off
Switch off the TV. We’re firing the laser.
2. take part in
Take part in something you believe in.
● 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.
Work in groups. Decide what kind of pollution you want to talk about.
Discussion
● 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”, “That’strue” or “That’s a good point”; if you do not agree with what someone says, say “I’msorry, but I don’t agree. I think that...”
Discuss your subject.
Present your group’s ideas to the whole class.

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