外研版九年级上册Module 12 Save our world Unit 1 课件(共39张PPT)

(共39张PPT)
Module 12
Save our world
Unit 1
If everyone starts to do something,
the world will be saved.
Warming up
Pollution
Pollution is our great enemy, and we have to fight it. Let’s watch a video about pollution.
air pollution
water pollution
noise pollution
vocabulary
Work in pairs. Look at the pictures and talk about them. Use the words in the box to help you.
factory pollute recycle waste
Everyday English
It’s no use …
Such as …
Nice idea!
Read the dialogue and complete the notes.
Pollution problems
If the rivers are polluted, ___________
_______________________________.
2. In some places, pollution from factories ____________________________.
farmers can’t use them to water their crops
spreads over cities and villages
3. The cars on the roads _______________
__________________________.
use so much oil and cause pollution
What the students can do
4. Support a green school: every class
_____________ which can be ________
_____________. Then the school
_________________ to help students
________________.
collects waste recycled or used again
sells the waste
in poor areas
5. Students learn ________________
__________________. That means
___________.
ways to save energy and recycle at home
less waste
Language points
We can recycle waste products, such
as glass and paper in a recycling
centre.
waste n. 浪费；废弃物 不可数名词
e.g. There’s a lot of waste in front of the
door.
门前有很多垃圾。
waste v. 浪费
e.g. It’s not right to waste water and
electricity. 浪费水电是不对的。
根据汉语意思完成英语句子。
1)每天大量的纸被浪费了。
Every day a lot of paper ____________.
2)这些废弃物是哪儿来的？
Where ____ the ________ from
is wasted
is waste
2. If the rivers are polluted, farmers can’t use the water for their crops.
pollute v. 污染 pollution n. 污染
e.g. The factory ________ the air and the
water nearby.
工厂污染了附近的空气的水源。
The government asked to reduce the
___________.
政府要求减少空气的污染。
polluted
air pollution
3. It’s no use talking about things we
can’t do.
It’s no use doing sth. 做某事没有用处
e.g. It’s no use complaining.
抱怨没有用处。
Listen, George, it’s no use living in
the past.
听着, 乔治, 活在过去是没有用的。
4. Such as ...
such as 这个短语常用来表示举例说 明。
e.g. — There are lots of things you could
do. 有很多你们能做的事。
— Such as … 比如说……？
5. That means less waste.
less adj. 较小的; 较少的
n. 较少数; 较少量
less是little 的比较级, 用来修饰不可数 名词。指物体的体积或分量相对于别的物体少。
e.g. The firm has less money and fewer staff than last year.
公司的资金和人员都比去年少了。
6. Though pollution is heavy now, I don’t think it’s hopeless.
hopeless adj. 无望的
hope(希望) + -less → hopeless
e.g. The doctor said the old man’s
condition was hopeless.
医生说这位老人的病是没有希
望的了。
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,
构词法
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。
(1) 常见前缀
前缀 含义 例词
dis- 不 disagree, dislike
en- 使……处于某种状态 enable, enrich
im-, in- 不 impossible, impatient, inexpensive
inter- 在……之间, 相互 international, interconnect
前缀 含义 例词
mis- 错误地 mislead, misunderstand
non- 不, 非 non-smoker, non-native
re- 再, 重复 rewrite, retell
un- 不 unable, unhappy, unpopular
(2) 常见后缀
后缀 功能 例词
-er, -or 构成名词 teacher, worker, visitor
-ian musician
-ing building, painting, shopping, meaning
-ist artist, scientist
后缀 功能 例词
-ment 构成名词 agreement, government
-ness coldness, happiness, illness
-th truth, warmth
-tion competition, education, information, invitation
-ty activity, safety
后缀 功能 例词
-able, -ible 构成 形容词 comfortable, eatable, enjoyable, possible,
-al environmental, international, national, traditional
-ful careful, helpful, useful
-ive active, expensive
-less careless, helpless, homeless, useless
后缀 功能 例词
-ly 构成 形容词 friendly, lovely, monthly, weekly
-ous dangerous, famous
-teen 构成数词 eighteen, fifteen, seventeen
-th fifteenth, fifth, fortieth, seventh
-ty forty, sixty, twenty
-ly 构成副词 badly, carefully, carelessly, happily, quickly
(3) 派生规律
由一个词根加上相应的词缀可以派生出名词、形容词、副词等，掌握派生规律对扩充词汇有很大帮助。例如：
由 interest 可以派生出：
uninteresting
interest — interesting — interestingly
interested — uninterested
由 help 可以派生出：
helpless — helplessly
help — helpful — helpfully
由 able 可以派生出：
enable
able unable
ability
disable
3. 转化法
英语构词法中把一种词性转化为另一种词性而词形不变的方法称作转化法。常见的转化有：
(1) 动词转化为名词
— Let’s talk about it more.
咱们再谈谈这件事吧。
— I think we’d better finish the talk
now. 我想我们最好现在结束谈话。
(2) 名词转化为动词
She gave me a cup of water.
她给了我一杯水。
You should water the flowers twice a
day.
你应该每天给这些花浇两次水。
(3) 形容词转化为名词
She was wearing a black dress.
她穿着一条黑色的裙子。
The girl in black looks very beautiful.
那个穿黑衣服的女孩看上去很漂亮。
4.Complete the passage with the correct form of the words in the box.
cause enemy factory
kill oil pollute spread
Exercises
Pollution is our great ________. Pollution from ________ is a danger to our health, and may even _____ people.
enemy
factories
kill
Factories sometimes ________ the rivers, and farmers cannot use the water for their crops. Pollution _________ over cities and villages, and that _________ even more danger. Cars use a lot of _____ and cause pollution too.
pollute
spreads
causes
oil
List the pollution problems in your place. Choose one problem and say what should be done about it.
5.Work in pairs.
— The air pollution in our city is
getting worse. What can we do to
stop it
— I think we can ride our bicycles to
school more.
For example
Homework
Write a passage about how to control pollution and how save our earth.
Thank you!