Teaching Objectives:
By the end of this unit, the students will be expected to be able to
1. get to know something about the sources to get energy from and know how to save energy; 2. use skillfully the key words and 8 expressions learned in TEXT A in conversations and
writings, and be familiar with the words and phrases learned in the text;
3. learn something about \"recyclable economy\"; learn as many language points as possible in
TEXT B;
4. consolidate the basic grammer on the past progressive tense; 5. get to know how to write a notice. Teaching Methods: Lecture, Discussion Unit Duration: 8 class hours(45 minutes each) Teaching procedures: I. Preparatory
1. Words And Phrases Learned In Display
shortage: (amount of) deficiency; condition of not having enough 不足
solar: of or from the sun, or using the energy from the sun to produce electric power 太阳的，来自太阳的，太阳能的
efficient: working or operating quickly and effectively in an organized way 效率高的；有能力
的，能胜任的
consume: use (fuel, energy or time), esp. in large amounts; eat or drink a lot 消耗，花费；大吃，
大喝
sometimes: at some times 有时
cancel: decide that something arranged in advance will not happen, or state that you no longer
wish to use or pay for something already ordered 取消
renewable: that can be renewed 可再生的，可延长的 light: cause to begin burning or to give out light 可燃，使发光 2. Expressions Learned In Display
at the moment make … use of take in turn… in as…as got stuck it took give off II. Language In Context 1. Information Related To The Text Energy Crisis:
This phrase usually refers to a critical shortage in the supply of energy—producing fuels, such as gas, oil, and coal. During the early 1970‟s, the demand for petroleum increased sharply, and western countries depended heavily on imported supplies. The situation became worse during the Arab-Israeli war of 1973, when the Arab nations reduced oil production and embargoed oil shipments to the U.S. and other countries that supported Israel, causing an acute energy shortage
in these countries during the winter of 1973-1974, thus first came “energy crisis.” Renewable Energy Resources:
“Rnewable enerny resources” refers to sources of energy which are capable of being renewed or cannot be depleted by use, such as watwe, wind, solar, biomass, geothermal and marine-based power.
2. Introductory Remarks:
In this article, the author discusses energy crisis. There are two main groups of energy: renewable and nonrenewable. Most of the energy we use comes from the nonnewable. These days, more people are using more machines to do things every day at work and at home, and we need more energy than we „ve ever needed. This rise trend of energy consupmtion is obvious. We are faced with a serios energy crisis.
The fact of the decrease in the reserves of traditional fossil fuel and the increase in the consumption demand makes it very urgent to take measures to resolve the problem of energy crisis. So now people are working hard to find cleaner and renewable alternatives of energy, such as hydrogen energy, wind energy, solar energy and nuclear energy. 3. Language Points:
(1) more people are using more machines to do things every day at work and at home. 现在进行时，表示近期的发展趋势或正在变化中的情况。 ▲ The night are getting shorter and shorter.
夜晚变得越来越短。 ▲ His handwriting is improving.
他的书法在进步。
（2）… when people are using too much electricity all at once, blackouts happen. a. suddenly 突然
▲ All at once there was a loud banging on the door. 突然， 有人很大声地敲门。
▲ He seemed to be perfectly all right, and then all at once he started coughing violently and fell to the floor.
起先他看上去很好，突然他猛烈地咳嗽起来，接著倒在地上。
b. stimultaneously 同时，一起 ▲ He was happy and sad all at once. 他悲喜交加。
▲ Bill can play the piano, sing, and lead his orchestra all at once. 比尔能同时弹钢琴、唱歌和指挥乐队。 （3）Traffic lights go out.
traffic n. the amount of vehicles moving along roads; or the amount of aircraft, trains or
ships moving along a route 流动的车辆（航线上的飞机、火车或船只），交通（量）
▲ There was heavey traffic on the roads this morning. 今天早上路上车辆很多。
▲ Five people were injured in a traffic accident. 五人在一起交通事故中受伤。
▲ Turn left at the traffic lights, and Royal Road is the second on your right. 在红绿灯那儿朝左拐，皇家大道就是你右边的第二条路。 （4）… and we don’t have to worry about running out of them. run out (of) finish or be finished, be used completely 用完 ▲ I’ve run out of the milk.\\ the milk has run out. 牛奶喝光了。
▲ Her patience is running out. 她渐渐失去了耐心。
（10）…but we are consuming them very quickly.
Consume v. use (fuel, energy or time), esp. in large amounts; eat or drink a lot 消耗，
花费；大吃，大喝
▲ That’s the trouble with those big powerful cars － they consume too much
fuel.
这就是大马力汽车的缺点－太耗油。
▲ He consumes vast quantities of chips with every meal. 他每天都吃大量的炸土豆条。
（11）many fossil fuels give off carbon dioxide when they are burned , and that makes our air unhealthy. give off: send out, produce 散发，发出 ▲ The fire gave off thick awirling smoke. 这火冒出了滚滚浓烟。
▲ The cooker is giving off a funny smell. 锅里正散发出一种古怪的气味。 III. Toward Productive Language 1. Language Points
（1）Every country has its share of the odd beliefs that we call superstitions.
share: n. the part of a large amount, which belongs to or is owed or has to be done by a
particular person 一份，份额
▲ The total bill comes to $80, so our share is $20. 账单一共80美元，所以我们该分担20美元。 v. have or use with, have in commen 共用，共有 ▲ He hated having to share the bedroom with a stranger. 他讨厌与陌生人共住一间旅馆房间。 （2）…as magic, it had the power to do good or evil.
do good help 行善
do sb. Good benefit somebody 对某人有益 do evil opposite to “do good”
▲ As a social worker, he dose a lot of good. 作为一个社会工作者，他做了许多善事。 ▲ Smoking dose you more harm than good. 吸烟对你有害无益。 ▲ He can do a lot of evil. 他能干出很多坏事。
（3）He valued salt for both its magical and chemical propertites. value v. consider as important 重视，珍视，尊重 ▲ I valued your comments on the report. 我很珍视你对报告的评述。
▲ Today, day, young people do not always value their parents’advise. 现在的年轻人并不总是尊重父母的劝告。
（4）In those early days salt was scarce in some places.
sarce adj. Not easy to find or obtain 不足的，难得的，稀有的，罕见的 ▲ Food is scarce because of drought. 旱灾引起了食品匮乏。
▲ Some animals are becoming scarce in Africa. 在非洲，有些动物越来越难见到。
(5)It was the precious item, too precious to be wasted.
Precious adj. Of great value because of being rare, expensive or important 珍贵的，宝贵的
▲ Happiness was the most precious gift I could have given Them
幸福是我能给他们的最珍贵的礼物了。 ▲ You’re so precious to me. 你对我来说太宝贵了。 2. Comprehention Questions
（1）why did the properties of salt puzzle people in the past?
In the past, people did not know the chemical nature of the chemical nature of the salt.
They did not know why salt could help to melt snow or to prevent food from spoiling. They looked on salt as magic, it had the power to do good or evil. (2) why did man think salt was much like friendship?
From the experience men learned that salt itself lasts; it helps to preserve food. The true
properties of salt gave rise to other beliefs about it. So men thought it was much like friendship, since friendship in their mind should be everlasting. Many old customs linked
salt with friendship. Salt was often given as a present to a friend in his new home. IV. Homework:
1. Translate the following sentences into English. （1）漫长而炎热的夏天导致了严重的用水缺乏。 （2）要有效地利用来自海外的援助。
（3）我们已失败100次，但总有一天我们会赢的。 （4）他们听了我的课，但是我不知道他们领会了多少。 （5）在战争期间，这里所有的建筑物都改成了医院。 （6）这座城市的交通系统是欧洲效率最高的交通系统之一。 （7）有时我们自己带食物，有时我们在那儿买。
（8）我们原打算去露营，但由于有两个人病了，最后不得不取消。 Keys for reference:
（1） The long hot summer has led to serious water shortages. （2） Efficient use should be made of aid sent from overseas. （3） We have lost 100 times, but one day we shall win.
（4） They listened to my lecture, but how much did they take in, I wonder. （5） During the war, all the buildings here had been turned into hospitals. （6） The city‟s traffic system is one of the most efficient in Europe.
（7） Sometimes we take food with us and sometimes we buy food where we are.
（8） We were planning to go camping, but we had to cancel it at the last minute because
two of our party were ill.
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