幻灯片 1语篇理解
课时跟踪检测
Unit 4
Section Ⅲ
语言点一
语言点二
语言点三
识记掌握
理解拓展
应用落实
识记掌握
理解拓展
应用落实
识记掌握
理解拓展
应用落实
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幻灯片 2----
幻灯片 3----
幻灯片 4----
幻灯片 5Ⅰ.Read the text and answer the following questions.
1．Why does Ouyang Guang write this letter to Earth Care?
答案：
2．What causes the growth of the greenhouse gas, carbon
dioxide in the air?
答案：
3．What uses a lot of energy every day?
答案：
To ask for suggestions on where to start with his
project.
Many things we do every day.
We use a lot of energy in our houses and motor
vehicles use a lot of energy too.
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幻灯片 6Ⅱ.Read the text and fill in the blanks.
environmental
improvements
make a difference
greenhouse gas
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幻灯片 7Turn off
Walk
recycled
energy
trees
global warming
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幻灯片 8----
幻灯片 9----
幻灯片 10A．词义配对
1．widespread A．a promise to do something
2．average B．happening without being planned or thought about
3．advocate C．the facts or conditions that
affect a situation
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幻灯片 114．circumstance D．publicly support a particular policy or ways of doing things
5．casual E．around a usual or an ordinary level or standard
6.commitment F．existing or happening in many places or situations, or among many people
答案：1－F；2－E；3－D；4－C；5－B；6－A
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幻灯片 12B．根据构词法(ency, ence, tion, or, ation, ment)写出单词
7．tend (vi.)→ (n.)
8．exist (vi.)→ (n.)
9．pollute (vt.)→ (n.)
10．present (vt.)→ (n.)
11．disagree (vi.)→ (n.)
12．educate (vt.)→ (n.)→ (n.)
tendency
existence
pollution
presentation
disagreement
educator
education
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幻灯片 13----
幻灯片 141．average
[教材P29原句] The greenhouse effect gives the
earth’s surface the average temperature of 15℃.
温室效应使地球表面的平均温度保持在15℃。
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幻灯片 15(1)adj.平均的；普通的
①The average price of houses in this city has increased
by nearly 30%.
这个城市的平均房价增长了近百分之三十。
②There was nothing special about the film — it was
only average.
这部影片没有什么特别之处——不过是一般的片子。
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幻灯片 16(2)n.平均；平均数
③The Houston Rockets lost their first five games by an
average of six points.
休斯敦火箭队遭遇开局五连败，平均每场输6分。
④On (the) average, a powerful earthquake occurs less
than once every two years.
通常，强烈的地震每两年发生不到一次。
⑤Mary’s school work is well above (the) average.
玛丽的学习成绩远远高于平均水平。
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幻灯片 17⑥ 平均有(后跟数词)
⑦ 平均起来
⑧above/below (the) average
an average of
on (the) average
在平均水平以上/以下
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幻灯片 18[点津] “the average of ...”作主语，谓语动词用单数，意为“……的平均数”。“an average of ＋复数名词”作主语，谓语动词用复数，意为“平均有……”。
⑨The average of 3, 8 and 10 is 7.
3,8,10的平均数为7。
⑩An average of ten students haven’t passed the exam in each class.
每个班平均有10名学生未通过考试。
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幻灯片 192．advocate
[教材P30原句] However, I still think people should
advocate improvements in the way we use energy today.
然而我仍认为人们应该支持改善日常能源的消耗方式。
(1)vt.拥护；提倡；主张；支持
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幻灯片 20①Our government advocates the use of energysaving lights.
我国政府提倡使用节能灯。
②Some people some present educational systems.
一些人主张改革一些现行的教育制度。
③People advocate that something to protect the environment.
人们提倡采取措施以保护环境。
advocate reforming
(should) be done
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幻灯片 21(2)n.[C]拥护者；提倡者
④To their disappointment, there is no advocate for/of the new policy.
令他们失望的是，没有人同意这一新政策。
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幻灯片 223．circumstance n．环境；情况(通常用复数形式)
[教材P30原句] Recycle cans, bottles, plastic bags
and newspapers if circumstances allow you to.
如果情况允许的话，把罐头盒，瓶子，塑料袋和报
纸回收利用起来。
①He was forced by the circumstances to do this.
他做此事是为环境所迫。
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幻灯片 23②In/Under the circumstances, we must rely on ourselves.
在这样的情况下我们必须依赖自己。
③At no time and under/in no
circumstances will China use
nuclear weapons.
在任何时间和任何情况下，中国都不会使用核武器。
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幻灯片 24④ 在这种情况下
⑤ 无论如何不
in/under the circumstances
in/under no circumstances
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幻灯片 25[点津] “决不”掉以轻心
以下短语均意为“决不；无论如何也不”，置于句首时，句子要用部分倒装语序。
at no time in no way in no sense
on no account on no condition
⑥On no account should the house be left unlocked.
离开住宅时，千万要锁门。
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幻灯片 26
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幻灯片 28----
幻灯片 291． the whole 大体上；基本上
2．on of 代表……一方；作为……的
代言人
3．put up 容忍；忍受
4．so as 只要
5．and on 等等
on
behalf
with
long
so
6．the countries 发达国家
7．make a 起作用；产生影响
8． a result of 作为……的结果
9．instead 代替；而不是
10．as as 也；又；而且
developed
difference
as
of
well
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幻灯片 30----
幻灯片 311．on behalf of代表……一方；作为……的代言人；为
了帮助(某人)；为了(某人)
[教材P30原句] I am doing a project on behalf of my
school about global warming.
我正代表学校做一项关于全球变暖的课题研究。
①On behalf of the class I would like to thank you all.
我谨代表全班感谢大家。
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幻灯片 32②The manager cannot be here, so I
will host the meeting .
经理不能前来，因此我将代表他主持会议。
③They worked hard all their lives the poor.
他们毕生为穷人的利益而辛劳。
on his behalf
on behalf of
④PRC the People’s Republic of China.
PRC代表中华人民共和国。
stands for
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幻灯片 332．put up with容忍；忍受
[教材P30原句] We do not have to put up with
pollution.
我们不必去忍受污染。
①He couldn’t put up with the
noise so he kept the window shut all day.
他忍受不了嘈杂声，所以整天将窗户紧闭。
put up with 的同义词有：stand, bear, tolerate等。
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幻灯片 34②The woman as a housewife has a lot to put up with.
作为一个家庭主妇，那位妇女不得不忍受许多烦恼。
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幻灯片 35③He put forward a plan for the committee to consider.
他提出一项计划交由委员会审议。
④The new season of NBA because of some reason.
由于某种原因NBA的新赛季被推迟了。
was put off
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幻灯片 363．so long as (＝ as long as)只要
[教材P30原句] It is OK to leave an electrical appliance on
so long as you are using it — if not, turn it off!
在用电器设备时，你可以让它开着，如果不用就把它关掉！
①You may borrow my book so/as long as you keep it clean.
只要你保持书干净，你就可以把我的书借走。
②So/As long as you have confidence in yourself, you’ll
win.
只要你有自信，你就会获胜的。
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幻灯片 37[点津] as long as 只能用于肯定句，而so long as既能用于肯定句，又能用于否定句。
③They agreed to lend us the car on condition that we returned it before the weekend.
他们同意借车给我们，条件是周末以前归还。
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幻灯片 39----
幻灯片 40----
幻灯片 411．[句型展示] As I’m not sure where to start with
my project, I would appreciate any suggestions you
may have。
因为我还不清楚我该从哪里着手开始我的研究，我会
感激你们的任何建议。
[典例背诵]
When and where to have the discussion hasn’t been
decided yet.
何时何地进行讨论还没有决定。
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幻灯片 422．[句型展示] It is OK to leave an electrical appliance
on so long as you are using it — if not, turn it off!
只要你在使用电器设备，你便可以把它开着，如果不
用就把它关掉！
[典例背诵]
I think there’s a bullet train at midday. If not, you
will have to wait till 2 o’clock in the afternoon.
我想正午会有一辆动车。要是没有你只好等到下午两
点了。
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幻灯片 433．[句型展示] It takes a lot of energy to make things from
new materials, so, if you can, buy things made from
recycled materials.
用新材料来做这些东西要耗费大量的能源，因此，如有
可能，就买那些用回收材料制成的物品吧。
[典例背诵]
It would take a long time for the two pandas Tian Tian
and Yang Guang to adapt to the new life at Edinburgh Zoo.
对于大熊猫甜甜和阳光来说，要花费很长一段时间来适
应在爱丁堡动物园的新生活。
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幻灯片 44----
幻灯片 451．It is OK to leave an electrical appliance on so long as
you are using it — if not, turn it off!
只要你在使用电器设备，你便可以把它开着，如果
不用就把它关掉！
此处if not 是if you don’t use it 的省略形式，属于if
型省略结构，意为“如果不是这样的话”。
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幻灯片 46①Ask her if it is a convenient time. If not, can she suggest
another possible time?
问问她那个时间方便不方便。要是不方便，那她可不可以另提一个可行的时间？
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幻灯片 47②—Are there any books about English grammar in the library?
— , there are only a few.
——图书馆里有关于英语语法的书吗？
——如果有，也很少。
③If necessary, I’ll pick you up.
如果有必要，我开车来接你。
If any
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幻灯片 482．It takes a lot of energy to make things from new
materials, so, if you can, buy things made from
recycled materials.
用新材料来做这些东西要花费大量的能源，因此，
如有可能，就买那些用回收材料制成的物品吧。
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幻灯片 49(1)句子结构分析：
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幻灯片 50(2)It takes sth. to do ...是固定句式，表示“做某事需
要……”
①It took my great courage to tell the truth.
说出真相需要极大的勇气。
②It usually takes half an hour for me my school.
我通常花半小时到达学校。
to get to
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幻灯片 51----
幻灯片 52③The journey should take us about three days.
这次旅程将花费我们大约3天时间。
④We are spending a lot more food than we used to.
我们在食物上的花销比过去多多了。
on
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幻灯片 53
点此进入
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幻灯片 54
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