(共26张PPT)
Module 12 Save our world
Unit 3 Language in use.
Revision
1. 为......担忧
2. 对......的危害
3. 节约能源
4. 引起污染
5. 消耗能源
6. 尽可能长久地
7. 把某物变成......
8. 对......造成伤害
9. 采取措施
1. be worried about
2. be a danger to
3. save energy
4. cause pollution
5. take energy
6. as long as possible
7. change sth. into
8. be harmful to......
9. take steps
Grammar--构词法--合成法
1.合成词构词法
英语中构成新词最基本的方法有三种：合成法，缩略法和词缀法。合成词构词法就是将两个独立的单词和在一起构成一个新的单词。常见的方法有：
(1). 合成名词
homework(家庭作业)
home
work
—
+
space + ship—spaceship(宇宙飞船)
after + noon—afternoon(下午)
Grammar--构词法--合成法
(2). 合成动词
ill + treat—ill-treat(虐待)
sight + see—sight-see(观光)
(3). 合成形容词
hard + working—hard-working(勤奋的)
well + known—well-known(著名的)
world + famous—world-famous(世界闻名的)
Grammar--构词法--合成法
(4). 合成副词
down + stair—downstairs(在楼下)
up + stairs—upstairs(在楼上)
(5). 合成代词
some +body—somebody(某人)
any +one—anyone(任何人)
(6). 合成介词
with +in—within(在…之内)
in +to—into(到…)
Grammar--构词法--派生法
在一个单词前或后加上一个词缀，就可以构成一个新词。 根据词缀的位置，分为前缀和后缀两种。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care, 就能掌握careful, careless, carefully, carelessly。xi'yan'zh
下面我们来学习几个常见的前、后缀：
2. 前缀，后缀构词法
Grammar--构词法--派生法
前缀：
前缀 含义 示例
dis- 不；非 agree同意-- ( );
like 喜欢-- ( )
un- happy开心-- ( ); able能-- ( );
popular受欢迎的-- ( );
im-, in- possible可能的-- ( );
expensive昂贵的 ( );
non-, native本地的--non-native( );
smoker吸烟者--non-smoker( );
Grammar--构词法--派生法
前缀 含义 示例
mis- 错误地 lead引导-- ( );
understand理解-- ( );
en- 使...处于某种状态 able能-- ( );
rich富有的-- ( );
re- 再；重复 write写-- ( );
tell告诉-- ( );
inter- 在...之间 national-- ( );
connect连接-- ( );
前缀：
Grammar--构词法--派生法
后缀：
后缀 功能 示例
-er 构成名词，表示“人” work工作-- ( );
teach 教-- ( );
-or visit 拜访-- ( );
act 演出-- ( );
-ian music -- ( );
-ist art 艺术-- ( );
science 科学-- ( );
Grammar--构词法--派生法
后缀：
后缀 功能 示例
-ment 抽象名词 govern 统治-- ( );
agree -- ( );
-ness ill 生病的-- ( );
cold 寒冷的-- ( );
happy 开心的-- ( );
-tion invite 邀请-- ( );
compete 竞争-- ( );
-ty safe 安全的-- ( ); compet
Grammar--构词法--派生法
后缀：
后缀 功能 示例
-able 构成形容词 enjoy 享受-- ( );comfort 安慰-- ( );
-al nation 国家-- ( ); tradition 传统-- ( );
-ful use 用-- ( ); help 帮助-- ( );
care 在意-- ( );
-ive act 行动-- ( ); expense 消费-- ( );
-less care 在意-- ( ); home 家-- ( );
-ly friend 朋友-- ( ); love 爱-- ( );
-ous humor 幽默-- ( ); danger 危险-- ( );
Grammar--构词法--派生法
后缀：
后缀 功能 示例
-teen 构成数词 十几 fifteen...
-ty 几十 fify ...
-th 第...... fifth...
-ly 构成副词 quick 快速的---- ( ); careful 小心的-- ( ); happy 开心的-- ( ); bad 坏的-- ( );
Grammar--构词法--派生法
3. 前缀，后缀构词法
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。
(1)名词转化为动词
(2)形容词转化为副词
(3)动词转化为名词
Activity 1
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 -able -ful im- -less re- un-
B care- collect- hope- -possible -use
-usual -wanted waste-
careful
careless
collectable
hopeful
hopeless
impossible
unused
reused
unusual
unwanted
wasteful
Activity 1
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 ________
5. not possible _____________
careful
collectable
hopeful
hopeless
6. not usual ________________
7. without any use __________
8. use again _______________
9. not wanted ______________
10. making a lot of waste ______
impossible
unusual
unused
reuse
wasteful
unwanted
Activity 2
2. Complete 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 clean up the whole river in such
a short time.
5. If we pay attention to pollution now, the future will be
__________.
unhealthy
wasteful
reuse
impossible
hopeful
Activity 3
Noun Verb Adjective Adverb
useful/useless
hope hopefully/hopelessly
pollution --
water -- --
waste
-- -- usually/unusually
hope
hopeful/
hopeless
pollute
polluted
water
waste
wasteful
wastefully
usual
Activity 4
She was_________ that her new job would make her more successful.
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.
hopefully
polluted
usual
wasteful
water
Activity 5
A _________is a box that you keep your lunch in.
lunchbox
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.
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.
classroom
postcard
storybook
blackboard
Activity 6
What kinds of things can be recycled
How can these things be reused
paper, plastic
Many paper and plastic things can be used
more than one time. Or we can change these things into decorations made by us.
Activity 6
3. How does this help the environment
We don’t need to cut down more trees
to make paper if we reuse papers.
4. Have you ever recycled or used things
that can be recycled How
I ever recycled to use paper cup,
I just use them to make some small decorations
such as pen container.
Activity 7
(1) worried about
(2) throw away
(3) turn off
(4) are good for
Activity 8
8. Listen and check (√)the true sentences.
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 the light when you do not need them.
6. Ride a bike or walk, and do not often drive your car.
Activity 9
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
take a bag
are hard to
Reuse
reduce pollution
waste electricity
Walk or cycling
pollution to earth,
water and else in
many different ways
Around the world
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 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 Building and
the Golden Gate Bridge will go dark.
THANK YOU
