Module 12 Save our world Unit 3 Language in use课件(共28张PPT)

(共28张PPT)
Unit 3
Language in use.
Module 12
学习目标
1.能熟悉并能正确运用本模块的单词和短语
2.能正确分析构词法的前缀后缀, 并能对其进行归纳和总结
3.能够谈论环保措施，并提出有关环保的建议
Look and say:
a green life
reduce
reuse
recycle
Reuse means “use again”.
Though pollution is heavy now, I don’t think it’s hopeless.
Read the sentences:
Task 1: Pre-reading
新课讲授
Make 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 waste
collectable, usable
impossible
reuse
careful, hopeful, useful, wasteful
careless, hopeless, useless
unusual, unwanted
Now work in groups. Play the guessing game English for Fun.
full of care ____________
2. can be collected ____________
3. full of hope ____________
4. without any hope ____________
careful
collectable
hopeful
hopeless
English for Fun
5. not possible ____________
6. not usual ____________
7. without any use ____________
8. use again ____________
9. not wanted ____________
10. making a lot of waste ____________
unusual
useless
reuse
unwanted
wasteful
impossible
合成词构词法
Grammar
合成词构词法就是将两个或两个以上独立且语义不同的单词合在一起构成新词的方法。
Task 2: Presentation
1.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。
（1）合成名词：
sun + light = sunlight(阳光)
black + board = blackboard(黑板)
（2）合成形容词：
well + known = well-known(著名的)
hard + working = hard-working(勤奋的)
（3）合成副词：
up + stair = upstairs(在楼上)
down + stair = downstairs(在楼下)
（4）合成代词：
some + thing = something(某事)
any + body = anybody(任何人)
（5）合成动词：
under + stand = understand(理解)
type + write = typewrite(打字)
2. 前缀、后缀构词法
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。
前缀 含义 例词
dis- 不 disagree, dislike
en- 使……处于某种状态 enable, enrich
im-, in- 不 impossible , inexpensive
inter- 在……之间；相互 international, interconnect
mis- 错误地 mislead, misunderstand
non- 不, 非 non-smoker, non-native
re- 再, 重复 rewrite, retell
un- 不 unable, unhappy
（1）常见前缀：
（2）常见后缀：
后缀 功能 例词
-er, -or 构成名词 teacher, worker
-ian musician
-ing building, painting
-ist artist, scientist
-ment 构成名词 agreement, government
-ness happiness, illness
-th truth, warmth
-tion competition, education
-ty activity, safety
（2）常见后缀：
后缀 功能 例词
-er, -or 构成名词 teacher, worker
-ian musician
-ing building, painting
-ist artist, scientist
-ment 构成名词 agreement, government
-ness happiness, illness
-th truth, warmth
-tion competition, education
-ty activity, safety
（2）常见后缀：
后缀 功能 例词
-er, -or 构成名词 teacher, worker
-ian musician
-ing building, painting
-ist artist, scientist
-ment 构成名词 agreement, government
-ness happiness, illness
-th truth, warmth
-tion competition, education
-ty activity, safety
将A、B两部分词配对，组成一个合成词：
A what, book, class, no, down, south, black, good
B bye, stairs, shop, west, thing, board, ever, mate
whatever
bookshop
classmate
nothing
downstairs
southwest
blackboard
goodbye
1. Our country has a problem with its air pollution.________must be done!
A．Everything B．Something
C．Anything D．Nothing
2. These walls _______ stones. Please give up smoking. It’s___________to your health.
A. harm B. harms C. harmful D. harmless
3.We should use china cups because we can ______ them.
A．reduce B．reuse C．recycle D．break
选择合适的选项：
Task 3: Practice
● 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’s true” or “That’s a
good point”; if you do not agree with what someone
says, say “I’m sorry, but I don’t agree. I think that…”
Task 3: Work in pairs.
Yes, I agree with you that air pollution is one of the most serious problems. Much energy is needed to run the factories. Nearly all of this energy is produced by burning fuels. The burning causes air pollution.
Scientists are finding ways to stop air pollution. They are studying new ways of generating electricity to have less pollution. Also, engineers try to design and locate new power plants(发电厂) to protect the environment.
However, it is a long way to go before we have a "clean" world. I think we should repeat these three words daily: reduce, reuse and recycle.
Present your group’s ideas to the whole class.
Task4: Group-work
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 ________.
hopeful impossible reuse unhealthy wasteful
unhealthy
wasteful
reuse
impossible
hopeful
Task 5: Exercise
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.
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.
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.
postcard
classroom
storybook
blackboard
用所给词的适当形式填空：
1. The doctors didn't know that ________(ill) at that time.
2. Paul always gets up late. It is ____________ (possible) to see him here before nine o'clock in the morning.
3. The ______ (five) talent show gave us a big surprise.
4. More action must be taken to stop _________ (pollute).
5.Alan is the _____ (win) of the photo competition this year.
illness
impossible
fifth
pollution
winner
合成词构词法
1.含义：将两个或两个以上独立且语义不同的单词合在一起构成新词的方法。
2.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。
3.前缀、后缀构词法
Task 6: Summary