幻灯片 1Unit 4 Global warming
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幻灯片 2 compare...to...把……比作……(抽象比喻，可表示同类
或非同类相比)
注意
compare 的过去分词短语形式作状语时，不管
同类还是异类，compared with 和 compared to 都可以用。
1．compare vt.& vi.比较；对照；比喻
compare with 与……比较
compare to 比喻为……
compare...with...拿……与……相比(常表示同类相比)
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幻灯片 3(2)莎士比亚把人世间比作舞台。
Shakespeare ________ the world ____ a stage.
(3)和西方相比，中国使用物资很节省。
______________ western countries, China uses materials
very economically.
compared
to
Compared with/to
运用 完成句子
(1)拿这双鞋与那双比较后，我认为我更喜欢这双。
After ________ this pair of shoes ________ that pair, I
think I like this better.
comparing
with
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幻灯片 4运用 完成句子
(1)处于压力下的人更容易发挥自己的全部潜能。
People under stress ________ develop their full range of
potential.
(2)当老板不在时请他照看这个商店。
He was required ______ the store in the owner's absence.
tend to
to tend
2．tend vi.趋向；易于；照顾 vt.(＝look after/take care
of) 照顾；护理
tendency n．倾向；趋势
tend to 倾向于；有助于
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幻灯片 5运用 完成句子
(1)热爱和平的人们都反对核武器。
People loving peace ________________________________
muclear weapon.
(2)我们赞成她升为总裁。
We are _________ her promotion to president.
oppose/are opposed to/object to/are against
in favor of
3．oppose vt.反对；反抗；与(某人)较量；使对立
be opposed to 反对……(to 为介词)
同义短语：disagree with/object to/be against sth.
反义短语：agree with/be in favor of/be for sth.
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幻灯片 6运用 完成句子
(1)这是一个带有一系列配件的电钻。
It's an electric drill with ________ different attachments.
(2)我没有射中那只鸟，因为它不在我的枪的射程范围
内。
I didn't fire the bird because it was __________________
my gun.
a range of
out of the range of
4．range n.种类；范围；山脉；行列；射程
a range of 一系列的
in/within the range of 在……范围内
out of the range of 超出……的范围
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幻灯片 75．average adj.平均的；普通的；一般标准的；平常
的 n.平均数
above/below (the) average 在平均水平以上/以下
on (an/the) average 平均而言
运用 完成句子
(1)这里夏天平均温度是 25 度。
__________ temperature in summer is 25 degrees here.
(2)我们每天平均接到 20 个电话。
We received 20 calls a day ____________.
The average
on average
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幻灯片 86．existence n．生存；存在
exist vi.存在；生存
in existence 存在
come into existence 出现；开始存在
exist in 存在于
运用 完成句子
(1)这个国家在 15 世纪早期就开始存在了。
This country _________________ in the early part of the
fifteenth century.
(2)农业也存在着一些问题。
Problems also ________ agriculture.
came into existence
exist in
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幻灯片 9用本单元所学单词及用法完成下列句子
1.毛主席将年轻人比作早上八九点钟的太阳。
Chairman Mao _________ young people _____ the sun
at 8 or 9 in the morning.
2.松鼠在树干里藏了很多坚果。
The squirrel hides a large ________ of nuts inside trees.
3.汤姆在学校的功课在平均水平以上。
Tom's work at school is ________________.
compared
to
quantity
above the average
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幻灯片 104．这个组织已经存在有 25 年了。
The organization has been ____________ for 25 years.
5．大部分参加比赛的学生都在 17 至 20 岁范围内。
Most of the students joining in the competition are _____
________ the age from 17 to 20.
6．老板陈述了他对该问题的见解。
The boss ________ his view on the subject.
7．她扬长而去，都不朝我这儿看一眼。
She walked off without a ________ in my direction.
in existence
in the
range of
stated
glance
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幻灯片 118．母亲病了，他得在家照料她。
Mother being ill, he had to _________________ her at home.
9．他们反对政府的新政策。
They ____________________ the government's new
policies.
tend/look after/take care of
opposed/were opposed to
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幻灯片 121．come about 产生；发生；造成
come in first/second 得第一/二名
come at 向……扑来
come to 到达；谈到；突然想起；苏醒
come out 出来；出版；(花)开
come into being (开始)出现；产生
come across 偶然遇到或发现；被理解
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幻灯片 13come back 回来；重新流行；回想起来
come from 来自
come up 长出；走上来；被提出
come true (梦想、愿望)实现
注意 come about＝happen＝take place，三者均无被动
语态。
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幻灯片 14(2)花刚开始长出地面。
The flowers are just beginning to ____________.
(3)今天早上我在牛津大街偶然碰见一位老校友。
I ____________ an old schoolmate in Oxford Street this
morning.
come up
came across
运用 完成句子
(1)他是怎么知道我们在什么地方的呢？
How did it ____________ that he knew where we were?
come about
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幻灯片 15运用 完成句子
(1)饱食常常会带来疾病。
Sickness often ____________ eating too much.
(2)事故导致三人死亡。
The accident ______________ three people being killed.
results from
resulted in/led to
2．result in (＝lead to) 导致；造成
辨析 result in/result from
(1)result in 后接结果。
(2)result from 意为“由……产生”，后接起因。
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幻灯片 163．keep on doing sth.继续做某事(强调动作的反复性)
keep off 远离；不接近
keep away from 避开；离开
keep back 不前进
keep out (of) 置身于(……之)外；不入
keep up 保持；继续；不低落
keep up with 赶上；跟上
注意 keep doing sth.意为“继续做某事”，表示不间
断地持续干某事，强调动作的连续性。keep 后不能接不定
式或表示静止状态的动词，而必须接延续性动词。
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幻灯片 17运用 完成句子
(1)请你关上门不让噪音进来好吗？
Would you please close the door to ____ the noise ____?
(2)如果继续下雨，所有庄稼都会被毁掉的。
If it ________________, all the crops will be ruined.
(3)他走得如此快，以致我不能跟上他。
He walked so fast that I couldn't _______________ him.
(4)你最好远离我，我患重感冒了。
You'd better ________________ me.I have a bad cold.
keep
out
keeps on raining
keep up with
keep away from
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幻灯片 184 ． so/as long as 只要；(＝on the condition that)
以……为条件；(＝since) 由于，既然
运用 完成句子
只要不下雨我们就能在操场上玩。
_______________________________it doesn't rain,
we can play on the playground.
As long as/On the condition that
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幻灯片 19用本单元所学短语及用法完成下列句子
1．我很难忍受他的粗鲁。
It is hard for me to ____________ his rudeness.
2．你能告诉我你的父母不允许我们待在一起是怎么回
事吗？
Can you tell me how it _____________ that your parents
don't allow us to stay together?
put up with
comes about
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幻灯片 203．这大体上是一个非常好的会议。
It was a pretty good conference ________________.
4．只要我们有着公平的机会，我们就很可能赢得这场
比赛。
__________________ we have fair opportunity, we are
likely to win the match.
5．她虽然疲劳但仍继续工作。
She ____________________ although she was tired.
6．供给不足导致了价格飞涨。
Inadequate supply ________________ the soaring price.
on the whole
As/So long as
kept on working
resulted in
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幻灯片 21原句
Some byproducts of this process are called “green
house” gas, the most important one of which is carbon dioxide.
这个升温过程的一些副产品就叫作“温室”气体，其中最
重要的一种是二氧化碳。
“...the most＋adj. ＋one of＋which/who...” 意为“其中
最……的之一……”。
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幻灯片 22精练 根据中文提示，完成下列句子
(1)这里有很多的动画片，其中最受欢迎的一部是《喜
羊羊与灰太狼》。
Here are many cartoons, ________________________ is
Happy Sheep And Gray Wolf.
(2)应采取有效措施防止生存环境进一步恶化，其中最
重要的措施之一就是限制过多的私家车的使用。
Some effective measures should be taken to keep our
living environment from getting worse, __________________
___________is to limit the use of private cars.
the most popular one of which
the most important
one of which
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幻灯片 23运用所学语言基础知识，补充完整下面短文，并背诵之
(1)_______________ (与……相比) the last century, the
Earth's surface temperature has (2)_______ (上升了) about 1
degree centigrade today.(3)_________________ (其实；事实
上), we may feel that we can hardly (4)_____________ (忍受)
much too hot summers and we can't (5)___________ (习惯于)
warm winters. The rise of the Earth's surface temperature has
(6)__________________ (有很大影响) to human health, the
Compared to/with
risen by
As a matter of fact
put up with
get used to
made much difference
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幻灯片 24(7)______________ (生存) of creatures and the balance of the
environment.(8)____________________ (条件允许的话), all
countries in the world should spare no effort to improve our
environment.Without all people's (9)_______________ (共同
努力), what would our future be like?
existence
Conditions permitting
joint efforts
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幻灯片 25利弊对比
【实用套语】
1．Evidently, ...have both negative and positive aspects.
On one hand, ...On the other hand, ...
显然，……都有正反两面。一方面，……另一方面，……
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幻灯片 262．Its advantage can be listed as follows.For one thing, ...
For another, ...However, just as a popular saying goes, “every
coin has two sides”， ...is no exception, and in other words, it
still has its negative aspects.To begin with, ...In addition, ...
它的优点可以列举如下：一方面，……另一方面，……
然而，正如一句流行语所说的：每个硬币都有两面，……
也不例外，换句话说，它仍有它不好的方面。首先，……
另外，……
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幻灯片 273．Just as the old saying goes, there is no garden without
weeds, and so does ... On the one hand , ...On the other
hand, ...Through the above analysis, I believe that the positive
aspects overweigh the negative ones.Therefore, I would like
to...
正如古语说的，没有一个花园没有杂草，……也是这
样。一方面，……另一方面，……通过上面的分析，我相
信积极的方面超过消极的方面，因此，我愿意……
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幻灯片 284．Generally, its advantages can be seen as follows.
First...Second...But every coin has two sides.Obviously, it
has some disadvantages, one of which is that...To make
things worse, ...For the comparison between these positive
and negative effects of...we know that its advantages far
outweigh its disadvantages.Therefore, we should...
大体来说，它的优点如下：首先，……第二，……但
是任何事物都有两面。明显地，它有一些缺点，其中一个
就是……更糟糕的是，……从这些……正反两面的比较，
我们知道它的优点远远超过它的缺点。因此，我们应该……
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幻灯片 29阅读下面短文，然后按照要求写一篇 150 词左右的英
语短文。
Human life can not continue without science and
technology.For many years, human society has developed
with the advance of science and technology while the
development of science and technology has in turn brought
the progress to mankind.So the life we are living now is more
civilized than that of our forefathers.
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幻灯片 30Science is important to most people living in the mo-dern
world.Science
is
important
to
world
peace,
to
the
understanding of technology, and to our understanding of the
natural world.Some areas of science are especially interesting
because they deal with questions all men and women ask
themselves.Science tries to provide some explanations for
what happens to people.
Science is hard to study.One of the reasons is that there
are so many questions without answers.Much science involves
asking questions, and then studying and doing research to try
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幻灯片 31to find the answers.Some questions have been studied by
research scientists for many years, and the answers are still
not known.However, scientists are slowly but surely able to
answer more and more questions about life, and these answers
change our lives and also explain them.
All of the many different kinds of science are important
and interesting.Scientists are asking and answering many
interesting and important questions about people and their
lives.A basic knowledge of science can help you to understand
both the questions and the answers.In the modern world, this
ability is essential to everyone.
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幻灯片 32[写作内容]
1．以约 30 词概括上文的主要内容；
2．以约 120 词就“科技给人们生活带来了什么”的主
题发表看法，内容包括：
(1)科技给人们带来许多好处；
(2)科技也给人们带来诸多麻烦；
(3)你的看法。
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幻灯片 33[写作要求]
1．作文中可以使用实例或其他论述方法支持你的论
点，也可以参照阅读材料的内容，但不得直接引用原文中
的句子。
2．作文中不得出现真实姓名和学校名称。
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幻灯片 34范文诵读：
The author puts stress on the importance of science and
technology in this passage.Though they are difficult to study,
many scientists devote themselves to the research of science
and technology.
On one hand, the development of science and
techno-logy has brought about many changes in people's
life.For example, we now live comfortably and conveniently
in houses furnished with air conditioners, washing machines
and televisions etc.And we can travel long distances within
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幻灯片 35hours by plane, train or car.Owing to the invention of
spaceship and rocket, the dream of man's landing on the moon
has now come true.
On the other hand, science and technology have also
brought us much trouble.For example, because of the
development of industry, lots of the wastes from factories
pour into the air and rivers, causing pollution of all kinds.
In my opinion, its advantages far outweigh its
disadvantages.As long as we use science and technology in a
proper way and avoid some problems, they may bring us even
more benefits.
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