Module 12 Save our world Unit 3 Language in use 课件

课件21张PPT。Module 12 Save our worldUnit 3 Language in use Language practice
Reuse means “use again”.
Though pollution is heavy now, I don’t think
it’s 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.
A
B care　collect　hope　possible　use
usual　wanted　waste-able　-ful　im-　-less re- un- 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 again
构词法
1. 合成法
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叫做合成法。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。
例如：afternoon, sportsman, blackboard, sportsperson, newspaper,
airplane, classmate, grandfather 等就是通过合成构词法构成的名词；kind-hearted, middle-aged, hard-working 等为合成形容词；however, maybe, himself, everyone, nothing, overlook 等也都是通过合成法构成的单词。
2. 派生法 通过在词根前面加前缀或在词根后面加后缀构成一个新词的方法叫作派生法。要通过派生法理解和记忆单词, 我们需要掌握常见的前缀和后缀及派生规律。 常见前缀work out解决；计算；产生结果；设计出
这里的go为系动词。英语系动词的功能主要是把表语和主语联系在一起，说明主语的属性、特征或状态。系动词不能在句中独立作谓语，
必须和后面的表语一起构成句子的谓语。 某些含有变化意义的动态系动词如get, become, grow, turn等的进行时态可与形容词的比较级连用，表示渐进过程，其意思是“越来越……”。
eg：He is growing taller and taller.
他长得越来越高了。
Our life is getting better and better.
我们的生活越来越好了。
易混系动词的区别
get, become, go, turn, grow “变得”
care for与care about的意义、用法
区别 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 __________.Complete the table.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.
be good for throw away turn off worry about
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 journey 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 have a leave a
room. Don’t tell me I shouldn’t travel by plane
any more!
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 ! 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! Module task
Discussing what you can do about pollution
Work in groups. Decide what kind of
pollution you want to talk about.
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.Homework
Finish the exercises in Learning English.
Review the new words and language points in Module 12.