Unit 4 Global warming

课件22张PPT。Unit 4 Global Warming Words
consume
renewable
greenhouse
graph
random
phenomenon
subscribe
fossil
fuel
byproduct methane
Celsius
measurement
per
data
trend
catastrophe
flood
drought
famine
mild environmental
consequence
steadily
economical
hectare
existence
outer
individual
advocate
commitment
pollution
growth
electrical appliance
casual
motor
can
microwave
refresh
educator
contribution
imperative
heading
slogan
presentation
nuclear1. 量
2.v. 趋向；照顾
3. 大灾难
4.反对
5. 陈述
6.种类
7.一瞥
8. 平稳的
9.倾向
10.分布广的
11. 平均的
12.存在
13.污染14. n. 生长
15. 环境，情况
16. 使恢复
17. 教育工作者
18.n.贡献
19. 分歧
20. 显示 短语
1. come about
come out
come up
come across
2. subscribe to sth.1） 2） 3）
agree to sth.
agree with sb.
3. 大量的：
后面跟__________ 名词,谓语形式取决于quantity的形式
联系:a great/good deal of, a great /good many
1) Quantities of arms were discovered in the cave
2) A large quantity of quilts was needed in Qinghai.发生；造成出来；出版上来，走近；被提出；发芽偶然遇见同意…订阅…向…捐赠quantities of / a large quantity of可数或不可数 4. 往往会做某事；趋向做某事
5. go up
联系：rise, raise
rise:
raise :
Eg. 1) The price has been _______ recently.
2) The boss promised to ______ your pay.
6.result in
result from
7. 反对：.
object to (doing) sth
be against (doing) sth tend to do sth.上升，增长 vi. 上升 = go upvt. 使上升；饲养；募集 going up raise 结果是； 导致 起因于。。。 be opposed to ( doing) sth.8. 即使： =
联系：as if / as though
though/ although
9. state v. ___________ n.______, _____
statement n._________
10.range n. ________ a range of sth
v. _________
range from... to...
11. 大体上
12. average:
an average of + 数词 ：
平均地，一般地 ：
13. 代表…一方 ： even if even though 似乎；好像虽然/尽管…..(但是….) on the whole平均的，一般的平均有（多少） on (an/the) average on behalf of变化,排序种类，范围陈述；说明状态国家，州陈述，说明一系列...由...到...之间的各类事物14. 忍受：
其它表示“忍受”的几个单词：
与put有关的几个短语：
put forward:
put away
put off
put on
put down
put up
put out
15. 只要：
as far as : put up with tolerate, bear, stand提出 收拾好；储蓄推迟穿上，上演 放下，记下举起；张贴；搭起（帐篷）使熄灭；生产 so/as long as和…一样远； 尽…; 就。。。16. circumstance n. ________ ; _________
（常用复数形式）
in / under no circumstances “绝不”
= =
位于句首，引起部分倒装
Eg. 你绝不应该借钱给玛丽
17. 把…和…相比：
把…比作…
compared to/with “和…比起来”
(固定搭配，在句中单独做状语）
Eg. _________________（跟很多女人比起来）
she is very fortunate.环境 情况under no condition by no meansUnder no circumstances should you lend money to Mary. compare… with… compare … to…Compared to many women18. build up : 1)
2)
3)
19. be casual about逐渐增加积累强身健体 build up one’s body对...马马虎虎/随意ReadingThe earth is becoming warmer-
but does it matter ?
What’s greenhouse gases ? And what’s the most important one of it ？
2.What’s greenhouse effect ? Without it, what will happen to the earth ?
3. What’s the attitude of Dr.Foster towards the rise of the temperature?
4. What’s the attitude of George Hamblery?What’s greenhouse gases ? And what’s the most important one of it ？
2.What’s greenhouse effect ? Without it, what will happen to the earth ?
4. What’s the attitude of Dr.Foster towards the rise of the temperature?
5. What’s the attitude of George Hamblery?The byproducts of the burning of fossil fuels like…are called “greenhouse gases” carbon dioxide It is when small amounts of gases in the atmosphere, like ….trap heat from the sun and warm the earth. Without it, the earth would be about33…cooler … He thinks it would be a catastrophe./ very serious.He thinks we shouldn’t worry about…and that any warming will be mild with…More carbon dioxide is actually a positive thing…Retell
How had global warming _________ and does it matter?There's no doubt that human activity caused it _________ a r______ natural p_____.
All scientists s___________ the view that the increase in temparature is due to the burning of f________. Some b________ of this p_______ are called"greenhouse"
gases. When small amount of gases trap heat from the sun and warm the earth,it is called "___________". So, we need these gases.But when huge q_______ ____ extra carbon dioxide go into the atmosphere, more heat energy t_______ to be trapped causing the global temperature to _________.
All scientists agree that the burning of fossil fuels______
_______ _____this increase.come aboutrather thanandomhenomenonubscribe touelsyproductsrocessgreenhouse effectuantities ofendsgo upresulted inhas But the attitudes of scientists towards this is different. On the one hand,some think that any t_____ in which the temperature increase ____ 5 degrees would lead to a c________, such as the r_____ of sea level,severe storms , f_____
... and the d_________ of species. On the other hand, others are o_________ this view. They predict that any warming will be m______ with few bad c__________. Hambley s______," More carbon dioxide is a p______ thing. It can make plants grow _______; crops will produce ______;It will encourage a greate r_____ of animals--all of which will make our life ______.
Greenhouse gases continue to __________. _______ we start reducing the amount,the climate is going to ________warming.rendbyatastropheiseloodsisappearancepposed toildonsequencestatesositivequickermoreangebetterbuild upEven ifkeep on重点句型1.So how has this come about and does it matter?
2. There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon.
3. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide.
4. Together, individuals can make a difference.
5. Remember-your contribution counts.1.So how has this come about and does it matter?
matter vi. ____________
n. ______________
Eg. 1) -----____________.
----- It doesn’t matter.
2) 你怎么了？
2. There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon.
.1）句型：There is no doubt that…
2)思考：3个that 分别起什么作用？
3）It is human activity that has caused this….
(对划线部分提问）
要紧，有关系要紧事I’m sorryWhat’s the matter with you ? 前两个that从句是并列同位语从句；第三个that是强调句型的连接词 What is it that has caused …?
强调句型的特殊疑问句：what/when/ where is it that…
rather than : __________
联系： or rather ___________ “ 而不是 ” 更确切的说3. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide.
which 引导_______ 从句，代替的是_____________
这个定语从句的特殊之处是：引导词which前面带有定语，即：the most important one of, 表示“…….中的…”之意，或者“属于…的”之意。这时，关系词的形式可以是：sth of which, of which sth…, whose sth.(表所属关系）。故上面定语从句也可以改成：
…, of which the most important one is carbon ….
Eg. 1）Look out ! Don’t get too close to the house____ roof is under repair.
A. whose B. which C. of D. that
定语 greenhouse gases●Reading II
I'm doing a project _________(代表)my school about gobal warming.I think people should ________ improvements in using energy.And I would a_______ any suggestions.
Many people have a c_______ like yours.Do remember: Togather, i_______ can make a difference.We do not have to _____________.
A few suggestions:
1.In our houses.It is OK to leave an e______ appliance on __________ (只要)you are using it- if not , turn it off!Don't be c__________ about this.
2. Avoid M________ vehicles
3.R_______ cans ,bottles... if c_______ allow you to.
4.Get your parents to buy things e_______ with energy.
5.Plant trees, which a_______ carbon dioxide and r________ your spirit.on behalf ofadvocateppreciateommitmentndividualsput up with pollutionlectricalas long asasualotorecycleircumstancesconomicalbsorbefresh6. Finnally and most importantly, be an e_____.
Remember---your c_________ counts!ducatorontribution4. Together, individuals can make a difference.
5. Remember-your contribution counts.
count v. 1) 2） 3）

1. When ___ her new bike with Mary’s, she became very disappointed.
A. comparing B. compared C. to compare
D. compare
2. Her shoes ___ her dress– they look very well together. A. suit B. fit C. compare D. match 众人拾柴火焰高 数算有价值Little Quiz●●3. The top leaders of the two countries are holding talks in a friendly ____.
A. atmosphere B. state C. situation D. phenomenon
4.---I’m sure Andrew will win the first prize in the final.
---- I think so. He ___ for it for months.
A. is preparing B. was preparing
C. had been prepared D. has been preparing
5. The man pulled out a gold watch, ___ were made of small diamonds.
A. the hands of whom B. whom the hands of
C. which the hands of D. the hands of which
6.For many cities in the world, there is no room to spread out further, __ New York is an example.
A. for which B. in which C. of which D. from which●●●●7. --- Do you know Anna’s telephone number?
---- ___ . In fact, I don’t know any Anna, either.
A. I think so B. I’m afraid not C. I hope not
D. I’d rather not
8. I remember the whole thing __ it happened yesterday.
A. unless B. as if C. even though D. even when
9. --- How far apart do they live ?
----___ I know, they live in the same neighborhood.
A. As long as B. As far as
C. As well as D. As often as
●●●