Unit8（第23講—第25講）
語(yǔ)法：
1.注意掌握副詞放在句首做狀語(yǔ)，修飾整個(gè)句子的用法，如：
1） Basically， there are two types of families.
2） Traditionally， all the members of an extended family lived in the same area.
2. 掌握連接詞的用法，連接詞可以用來(lái)幫助使前后文更加連貫。
1）The children stay in the nuclear family until they grow up and marry.
2） Then they form new nuclear family.
3）The members…are related by blood or by marriage.
4）They are all related， so the members of an extended family are called relatives.
5）However， with the change from an agricultural to an industrial society， many nuclear families moved away from the family home in order to find work.
6） …but most extended families do not live together.
7） Therefore we can say that the nuclear family becomes more important than the extended family as the society industrializes.
8） The nuclear family is becoming smaller as parents want fewer children， and the number of…
9） …both the father and the mother earn money for the family…
10） Most single parents find it very difficult to take care of a family alone， so they soon marry again and form remarried families.
以上句子中的畫(huà)線單詞有連詞也有副詞，在句子中都起連接詞的作用。
本課簡(jiǎn)介
技術(shù)是否也是一把雙刃劍，在給人們帶來(lái)幫助的同時(shí)也帶來(lái)了弊端？本課通過(guò)衛(wèi)星通訊的利弊昭示人們“明智”地運(yùn)用技術(shù)才能使我們走向成功。
衛(wèi)星、計(jì)算機(jī)和電視的三結(jié)合改變了人們的生活。衛(wèi)星被用來(lái)傳送電視節(jié)目、電話和印刷材料；衛(wèi)星被用于遠(yuǎn)程教育，使邊遠(yuǎn)地區(qū)的人們通過(guò)“空中教室”接受教育；衛(wèi)星被用來(lái)幫助生活在交通不便的偏僻地區(qū)的人們；衛(wèi)星使世界各地的人們便捷地獲取信息。然而侵犯隱私、使人與人之間疏于接觸交流等弊端也應(yīng)引起關(guān)注。
本課主要語(yǔ)言點(diǎn)
1.At the beginning of the twentieth century， there were four powerful means of transmitting and receiving information over long distances：…
本句中的beginning 是一個(gè)名詞，意思是“開(kāi)始，開(kāi)端”。如：
1）from beginning to end （從頭到尾）
2）He has made a good beginning. （他開(kāi)了個(gè)好頭。）
3）I'm afraid I won't have the time to come back at the beginning of the term. （恐怕我不會(huì)有時(shí)間在開(kāi)學(xué)初回來(lái)。）
means在本句中的意思是“方法；工具”，請(qǐng)看例句：
1）The most convenient means of transport for people in the United States are cars.（對(duì)美國(guó)人來(lái)說(shuō)便利的交通工具是汽車。）
2）He had no means of escape other than jumping. （除了跳窗，他沒(méi)有別的逃跑方法。）
3） He succeeded by means of painstaking effort. （他依靠苦干獲得了成功。）
by all means 盡一切辦法
live within/beyond one's means 量入（不量入）為出
a means to an end 達(dá)到目的的方法
by some means or other 用某種方法
2.By the middle of the century， both radio and television had become established means of transmitting sounds and pictures.
句中所用的過(guò)去完成時(shí)，表示過(guò)去某時(shí)前已經(jīng)發(fā)生的動(dòng)作或情況。該動(dòng)作已經(jīng)完成，或者可能延續(xù)下去。用by引起的時(shí)間狀語(yǔ)常與過(guò)去完成時(shí)連用。例如：
1） By the end of last June， they had visited 15 countries. （到去年六月底為止他們已經(jīng)訪問(wèn)了15個(gè)國(guó)家。）
2）By the end of last year Henry had collected 1500 butterfly specimens. （到去年年底，亨利已經(jīng)采集了一千五百多個(gè)蝴蝶標(biāo)本。）
3）By the middle of 1999， more than 10 high buildings had been built in this area. （到1999年年中，這一地區(qū)已建造了十座高樓。）
4）By the time they got to the cinema， the film had already begun. （他們趕到電*時(shí)，電影已經(jīng)開(kāi)映了。）
established在句中做形容詞，意思是“常規(guī)的”。這個(gè)詞還可解釋為“（被）設(shè)立的；確認(rèn)的；既定的；公認(rèn)的”。例如：
1）a newly established organization （新設(shè)的組織）
2） the established principles of international law （公認(rèn)的國(guó)際法準(zhǔn)則）
3）an established fact （既成事實(shí)）
4）an established custom （常規(guī)）
3.In order to transmit an event such as the Olympics Via satellite， television signals are first changed into radio waves， which are then sent from a station on earth to an orbiting satellite.
such as的后面既可以跟名詞也可以跟從句，意為“諸如…之類的”：“例如”或“像…這樣的人或事物”。請(qǐng)看例句：
1）They will plant flowers such as roses， sunflowers， etc. （他們將栽種玫瑰、向日葵一類的花。）
2）Countries such as France， Germany， Japan and America are developed countries. （像法國(guó)、德國(guó)、日本和美國(guó)這類國(guó)家是發(fā)達(dá)國(guó)家。）
3）I felt a weight at my heart such as I had never had before. （我心中感到了一種從未有過(guò)的沉重情緒。）
4）I don't have many reference books but I will send you such as I have. （我的參考書(shū)不多，但我愿把我手頭有的那些寄給你。）
which引導(dǎo)的是一個(gè)非限定性的定語(yǔ)從句。非限定性定語(yǔ)從句在修飾人時(shí)用who， whom或whose， 在修飾物時(shí)用which.非限定性定語(yǔ)從句常用逗號(hào)與主句分開(kāi)。例如：
1） The students， who wanted to go outing， were disappointed when it rained. （那些學(xué)生想去郊游，天下雨了大家都感到失望。）
2）The team is headed by an American， whose wife is a Chinese. （隊(duì)長(zhǎng)是一個(gè)美國(guó)人，他的妻子是中國(guó)人。）
3）The book， which he borrowed from me yesterday， cost 1/3 of my salary. （他昨天從我這兒借走的那本書(shū)花了我三分之一的工資。）
非限定性定語(yǔ)從句也可用關(guān)系副詞where或when來(lái)引導(dǎo)。非限定性定語(yǔ)從句的先行詞可以是一個(gè)詞，也可以是前面主句中的一個(gè)短語(yǔ)、從句或前面整個(gè)句子，通常用關(guān)系代詞which引導(dǎo)。例如：
1）The small town， where he once worked， has turned to be a modern city. （那座小城，他曾在那兒工作過(guò)，已變成一座現(xiàn)代化的城市了。）
2）We will put off the outing until next week， when we won't be so busy. （我們把郊游推遲至下周，那時(shí)我們不會(huì)這么忙了。）
3）They turned a deaf ear to our demands， which made all of us angry. （他們對(duì)我們的要求置之不理，這使我們大家都很生氣。）
4.In theory， every person will have access to an unlimited amount of information.
in theory意為“從理論上來(lái)說(shuō)；在理論上”，與其意思相反的詞組是in practice （在實(shí)踐中；實(shí)際上）。例如：
1）Your plan is good in theory， but does it work in practice？ （你的計(jì)劃在理論上是不錯(cuò)的，但實(shí)行起來(lái)能行嗎？）
2）His proposal worked well in practice. （他的建議很行得通。）
have access to是一個(gè)很常用的詞組，意為“可接近，可進(jìn)入”，to是介詞，動(dòng)詞have也可用其他詞替換。如get，gain，give，win等。在詞匯部分，對(duì)access已做過(guò)講解，在此僅舉例一、二。
1）The only access to that building is blocked. （進(jìn)入那座樓的通道被堵住了。）
2）Students need easy access to books. （學(xué)生需要很容易地接觸到圖書(shū)。）
2）You can easily get access to the humorous old man.（你很容易接近那個(gè)幽默的老人。）
information是一個(gè)不可數(shù)名詞，后面不可以加s，許多信息可以用a lot of information， a large amount of information， much information等表達(dá)。一條信息可以表達(dá)為a piece of information.
amount通常用在不可數(shù)名詞前面，如the amount of money； a considerable amount of prejudice （相當(dāng)大的偏見(jiàn)）。在復(fù)數(shù)名詞前面可用number，如the number of mistakes； the number of students
5.The satellite also demonstrated how it could provide help to people living in isolated areas where transportation is difficult.
how引導(dǎo)的是一個(gè)賓語(yǔ)從句。我們很熟悉的是that引導(dǎo)的賓語(yǔ)從句，而且that常常可以省略。如：We must remember （that） things are easier said than done. （我們必須記住事情都是說(shuō)起來(lái)容易，做起來(lái)難。）
用連接代詞或副詞引導(dǎo)的賓語(yǔ)從句我們也應(yīng)弄清楚。請(qǐng)看下面的句子：
1） He didn't tell me where the shopping center was.（他沒(méi)有告訴我購(gòu)物中心在哪里。）
2）Do you know what they were talking about？（你知道他們剛才在談?wù)撌裁磫?？?BR> 3）Let's see how we can solve the problem. （我們看看怎么來(lái)解決這個(gè)問(wèn)題。）
4）I'm wondering if the letter is overweight.（我想知道這封信是不是超重。）
5）We must find out who did this. （我們必須弄清楚這是誰(shuí)干的。）
provide是一個(gè)常用單詞，通?？梢杂腥缦掠梅ǎ簆rovide sth. to/for sb.； provide sb. with sth.； provide sb. sth.；provide that…，在前一個(gè)單元中，我們已對(duì)provide一詞有過(guò)講解，再請(qǐng)看幾個(gè)例子：
1）It is impossible for the government to provide all young people with a job. （政府不可能給所有的年輕人都提供一份工作。）
2）Can you provide 5 buses for/to the tourists？ （你們能為游客們提供五輛巴士嗎？）
3）The agreement provides that the two sides shall meet once a month. （協(xié)議規(guī)定雙方每月會(huì)晤。）
6.He was then able to follow the doctor's instructions on how to care for the patient.
句子中的on意思為“關(guān)于；有關(guān)”，可用about替換。例如：
1）He wrote a book on India. （他寫(xiě)了一本有關(guān)印度的書(shū)。）
2）He gave us a report on the international economy. （他給我們做了關(guān)于國(guó)際經(jīng)濟(jì)的報(bào)告。）
3）They exchanged views on questions of common concern. （他們就共同關(guān)心的問(wèn)題交換了意見(jiàn)。）
care of 在句子中的意思是“照顧”，可用attend； look after替換。例如：
1）The whole society should care for the younger generation. （全社會(huì)都應(yīng)該關(guān)懷年輕的一代。）
2）You can't really find out how to care for children from books. （你從書(shū)本上不可能真正找到照顧孩子的方法。）
care for 還可以解釋為“擔(dān)心”，“介意”，“愿意”，可用about替換for.
1）He doesn't care about/for his clothes. （他不講究衣著。）
2）The old lady cared much for her daughter's safety. （老太太非常為女兒的安全擔(dān)心。
3）Would you care for a cup of tea？ （來(lái)杯茶，好嗎？）
4）I don't care for him to read the letter. （我不愿意讓他看這封信。）
7.The most common use of telecommunication satellites， however， has been for transmitting telephone calls.however
在本句中做副詞用，意思相當(dāng)于but.但是however和but在用法上是有差異的。however不放在句首或句末時(shí)，前后通常都加逗號(hào)，而but則不用。請(qǐng)看例句：
1）It is not， however， the only answer to the question. （然而，這不是問(wèn)題的答案。）
2）I'd like to go and see the films， however，I don't have the time. （我很想去看電影，但我沒(méi)時(shí)間。）
3）However， we still have 10minutes left. （不過(guò)，我們還有十分鐘。）
4）The composition is well written， there is room for improvement， however.
5）I am sorry， but I won't be able to come this time. （很報(bào)歉，我這次不能來(lái)了。）
6）He would like to go， but he was busy. （他想去，但他太忙。）
7）It's not cheap， but it's really good. （這個(gè)不便宜，但的確很好。）
8. Telecommunication can make information from around the world available to use quickly and easily， but some people worry that this may be a risk to our privacy.
available是一個(gè)形容詞，意思是“可得到的；可用的；有效的”。
1）I am sorry those shoes are not available in your size. （很報(bào)歉，那些鞋沒(méi)你的尺碼。）
2）If I am not available when you call， leave a message. （你打電話來(lái)時(shí)如果我不在，請(qǐng)留個(gè)言。）
3）If the tickets is available， I will go to the concert. （如果能弄到票，我會(huì)去聽(tīng)音樂(lè)會(huì)。）
4）The ticket is available on the day of issue only. （此票僅發(fā)售當(dāng)天有效。）
9.We can prevent this from happening by carefully controlling the new technology.
prevent…from…意思為“阻止…發(fā)生”，也可用stop…from…或keep…from.From可被省去。例如：
1）They tried every means to prevent the disease （from） spreading. （他們想方設(shè)法阻止疾病曼延。）
2）Nothing can prevent him （from） going there.（什么也阻止不了他去那兒。）
本課主要詞組及語(yǔ)法要點(diǎn)
詞組：
1. at the beginning of 2.means of
3. over long distance 4. by the middle of
5. such as 6. change into
7. from…to… 8. be capable of
9. not only…but… 10.in theory
11. have access to 12.amount of
13. provide…to… 14.follow sb's instructions
15. care for 16. as well as
17. at the same time 18. make…available
19. pay for 20.isolate…from…
語(yǔ)法：
1.過(guò)去完成時(shí)
1） …both radio and television had be come established means of transmitting sounds and pictures.
2. 非限定性定語(yǔ)從句
1） …radio waves， which are then sent from a station on earth to an orbiting satellite.
2） …back to earth， where another station picks them up and changes them back into television signals.
3） The combination of satellites， which transmit information， computers， which store information， and television， which displays information， will change every home into an education and entertainment center.
2. 賓語(yǔ)從句
1） We must remember that technology alone is not the answer.
2） The satellite also demonstrated how it could provide help to people living in isolated areas…。
3. 注意such as，as well as，as的用法
1） In order to transmit an event such as the Olympics via satellite， …
2） …printed materials such as books and magazines.
3） …as well as get any information they need， …
4） As one telecommunication expert days， …
Text B What People Don't Know about Air
短語(yǔ)表達(dá)
1. without
We couldn't have finished the work so soon without your help.
Without air， there would be no wind or clouds.
2. adv. + past participle
It is widely known that the earth goes around the sun.
It is generally believed that the earth is getting hotter.
3. where
Where there is a will， there is a way.
Where there is hope， there is life.
4. be forced to
He was forced to drop out of school.
They were forced to work 14 hours a day.
5. shelter v.& n.
Mother tried to shelter her from the blow of the tragic news.
You have to find shelter from the blazing sun.
6. protect from
It is necessary that we protect our skin from being burned by the sun.
She had his umbrella to protect her from the sun.
7. deadly adj.
They made a deadly attack on the enemy's air base.
A drop of this poison might be deadly to man.
8. burst
As he braked a tire burst.
All the boys burst from their tents.
Everybody in the room burst out laughing.
The little girl burst into tears.
9. rest upon
His arm rested upon the table.
The task rested upon my shoulder.
His eyes rested upon a strange object.
10. gaze at
He was standing at the window， gazing at the street.
What are you gazing at？
11. not…until
He didn't go out to play until he finished his homework.
No one was to go to bed until further order.
12. in the meantime
His case won't come to court for several months， and in the meantime more than half of the people think him guilty.
At last we were released. In the meantime， our friend had informed the newspaper.
13. pay attention to
Please pay more attention to your spelling next time.
I didn't pay much attention to what he said yesterday.
14. add to
If you praise others more often， you can add great happiness to their life.
What he said just now added to my confusion.
語(yǔ)法：
1.注意掌握副詞放在句首做狀語(yǔ)，修飾整個(gè)句子的用法，如：
1） Basically， there are two types of families.
2） Traditionally， all the members of an extended family lived in the same area.
2. 掌握連接詞的用法，連接詞可以用來(lái)幫助使前后文更加連貫。
1）The children stay in the nuclear family until they grow up and marry.
2） Then they form new nuclear family.
3）The members…are related by blood or by marriage.
4）They are all related， so the members of an extended family are called relatives.
5）However， with the change from an agricultural to an industrial society， many nuclear families moved away from the family home in order to find work.
6） …but most extended families do not live together.
7） Therefore we can say that the nuclear family becomes more important than the extended family as the society industrializes.
8） The nuclear family is becoming smaller as parents want fewer children， and the number of…
9） …both the father and the mother earn money for the family…
10） Most single parents find it very difficult to take care of a family alone， so they soon marry again and form remarried families.
以上句子中的畫(huà)線單詞有連詞也有副詞，在句子中都起連接詞的作用。
本課簡(jiǎn)介
技術(shù)是否也是一把雙刃劍，在給人們帶來(lái)幫助的同時(shí)也帶來(lái)了弊端？本課通過(guò)衛(wèi)星通訊的利弊昭示人們“明智”地運(yùn)用技術(shù)才能使我們走向成功。
衛(wèi)星、計(jì)算機(jī)和電視的三結(jié)合改變了人們的生活。衛(wèi)星被用來(lái)傳送電視節(jié)目、電話和印刷材料；衛(wèi)星被用于遠(yuǎn)程教育，使邊遠(yuǎn)地區(qū)的人們通過(guò)“空中教室”接受教育；衛(wèi)星被用來(lái)幫助生活在交通不便的偏僻地區(qū)的人們；衛(wèi)星使世界各地的人們便捷地獲取信息。然而侵犯隱私、使人與人之間疏于接觸交流等弊端也應(yīng)引起關(guān)注。
本課主要語(yǔ)言點(diǎn)
1.At the beginning of the twentieth century， there were four powerful means of transmitting and receiving information over long distances：…
本句中的beginning 是一個(gè)名詞，意思是“開(kāi)始，開(kāi)端”。如：
1）from beginning to end （從頭到尾）
2）He has made a good beginning. （他開(kāi)了個(gè)好頭。）
3）I'm afraid I won't have the time to come back at the beginning of the term. （恐怕我不會(huì)有時(shí)間在開(kāi)學(xué)初回來(lái)。）
means在本句中的意思是“方法；工具”，請(qǐng)看例句：
1）The most convenient means of transport for people in the United States are cars.（對(duì)美國(guó)人來(lái)說(shuō)便利的交通工具是汽車。）
2）He had no means of escape other than jumping. （除了跳窗，他沒(méi)有別的逃跑方法。）
3） He succeeded by means of painstaking effort. （他依靠苦干獲得了成功。）
by all means 盡一切辦法
live within/beyond one's means 量入（不量入）為出
a means to an end 達(dá)到目的的方法
by some means or other 用某種方法
2.By the middle of the century， both radio and television had become established means of transmitting sounds and pictures.
句中所用的過(guò)去完成時(shí)，表示過(guò)去某時(shí)前已經(jīng)發(fā)生的動(dòng)作或情況。該動(dòng)作已經(jīng)完成，或者可能延續(xù)下去。用by引起的時(shí)間狀語(yǔ)常與過(guò)去完成時(shí)連用。例如：
1） By the end of last June， they had visited 15 countries. （到去年六月底為止他們已經(jīng)訪問(wèn)了15個(gè)國(guó)家。）
2）By the end of last year Henry had collected 1500 butterfly specimens. （到去年年底，亨利已經(jīng)采集了一千五百多個(gè)蝴蝶標(biāo)本。）
3）By the middle of 1999， more than 10 high buildings had been built in this area. （到1999年年中，這一地區(qū)已建造了十座高樓。）
4）By the time they got to the cinema， the film had already begun. （他們趕到電*時(shí)，電影已經(jīng)開(kāi)映了。）
established在句中做形容詞，意思是“常規(guī)的”。這個(gè)詞還可解釋為“（被）設(shè)立的；確認(rèn)的；既定的；公認(rèn)的”。例如：
1）a newly established organization （新設(shè)的組織）
2） the established principles of international law （公認(rèn)的國(guó)際法準(zhǔn)則）
3）an established fact （既成事實(shí)）
4）an established custom （常規(guī)）
3.In order to transmit an event such as the Olympics Via satellite， television signals are first changed into radio waves， which are then sent from a station on earth to an orbiting satellite.
such as的后面既可以跟名詞也可以跟從句，意為“諸如…之類的”：“例如”或“像…這樣的人或事物”。請(qǐng)看例句：
1）They will plant flowers such as roses， sunflowers， etc. （他們將栽種玫瑰、向日葵一類的花。）
2）Countries such as France， Germany， Japan and America are developed countries. （像法國(guó)、德國(guó)、日本和美國(guó)這類國(guó)家是發(fā)達(dá)國(guó)家。）
3）I felt a weight at my heart such as I had never had before. （我心中感到了一種從未有過(guò)的沉重情緒。）
4）I don't have many reference books but I will send you such as I have. （我的參考書(shū)不多，但我愿把我手頭有的那些寄給你。）
which引導(dǎo)的是一個(gè)非限定性的定語(yǔ)從句。非限定性定語(yǔ)從句在修飾人時(shí)用who， whom或whose， 在修飾物時(shí)用which.非限定性定語(yǔ)從句常用逗號(hào)與主句分開(kāi)。例如：
1） The students， who wanted to go outing， were disappointed when it rained. （那些學(xué)生想去郊游，天下雨了大家都感到失望。）
2）The team is headed by an American， whose wife is a Chinese. （隊(duì)長(zhǎng)是一個(gè)美國(guó)人，他的妻子是中國(guó)人。）
3）The book， which he borrowed from me yesterday， cost 1/3 of my salary. （他昨天從我這兒借走的那本書(shū)花了我三分之一的工資。）
非限定性定語(yǔ)從句也可用關(guān)系副詞where或when來(lái)引導(dǎo)。非限定性定語(yǔ)從句的先行詞可以是一個(gè)詞，也可以是前面主句中的一個(gè)短語(yǔ)、從句或前面整個(gè)句子，通常用關(guān)系代詞which引導(dǎo)。例如：
1）The small town， where he once worked， has turned to be a modern city. （那座小城，他曾在那兒工作過(guò)，已變成一座現(xiàn)代化的城市了。）
2）We will put off the outing until next week， when we won't be so busy. （我們把郊游推遲至下周，那時(shí)我們不會(huì)這么忙了。）
3）They turned a deaf ear to our demands， which made all of us angry. （他們對(duì)我們的要求置之不理，這使我們大家都很生氣。）
4.In theory， every person will have access to an unlimited amount of information.
in theory意為“從理論上來(lái)說(shuō)；在理論上”，與其意思相反的詞組是in practice （在實(shí)踐中；實(shí)際上）。例如：
1）Your plan is good in theory， but does it work in practice？ （你的計(jì)劃在理論上是不錯(cuò)的，但實(shí)行起來(lái)能行嗎？）
2）His proposal worked well in practice. （他的建議很行得通。）
have access to是一個(gè)很常用的詞組，意為“可接近，可進(jìn)入”，to是介詞，動(dòng)詞have也可用其他詞替換。如get，gain，give，win等。在詞匯部分，對(duì)access已做過(guò)講解，在此僅舉例一、二。
1）The only access to that building is blocked. （進(jìn)入那座樓的通道被堵住了。）
2）Students need easy access to books. （學(xué)生需要很容易地接觸到圖書(shū)。）
2）You can easily get access to the humorous old man.（你很容易接近那個(gè)幽默的老人。）
information是一個(gè)不可數(shù)名詞，后面不可以加s，許多信息可以用a lot of information， a large amount of information， much information等表達(dá)。一條信息可以表達(dá)為a piece of information.
amount通常用在不可數(shù)名詞前面，如the amount of money； a considerable amount of prejudice （相當(dāng)大的偏見(jiàn)）。在復(fù)數(shù)名詞前面可用number，如the number of mistakes； the number of students
5.The satellite also demonstrated how it could provide help to people living in isolated areas where transportation is difficult.
how引導(dǎo)的是一個(gè)賓語(yǔ)從句。我們很熟悉的是that引導(dǎo)的賓語(yǔ)從句，而且that常常可以省略。如：We must remember （that） things are easier said than done. （我們必須記住事情都是說(shuō)起來(lái)容易，做起來(lái)難。）
用連接代詞或副詞引導(dǎo)的賓語(yǔ)從句我們也應(yīng)弄清楚。請(qǐng)看下面的句子：
1） He didn't tell me where the shopping center was.（他沒(méi)有告訴我購(gòu)物中心在哪里。）
2）Do you know what they were talking about？（你知道他們剛才在談?wù)撌裁磫?？?BR> 3）Let's see how we can solve the problem. （我們看看怎么來(lái)解決這個(gè)問(wèn)題。）
4）I'm wondering if the letter is overweight.（我想知道這封信是不是超重。）
5）We must find out who did this. （我們必須弄清楚這是誰(shuí)干的。）
provide是一個(gè)常用單詞，通?？梢杂腥缦掠梅ǎ簆rovide sth. to/for sb.； provide sb. with sth.； provide sb. sth.；provide that…，在前一個(gè)單元中，我們已對(duì)provide一詞有過(guò)講解，再請(qǐng)看幾個(gè)例子：
1）It is impossible for the government to provide all young people with a job. （政府不可能給所有的年輕人都提供一份工作。）
2）Can you provide 5 buses for/to the tourists？ （你們能為游客們提供五輛巴士嗎？）
3）The agreement provides that the two sides shall meet once a month. （協(xié)議規(guī)定雙方每月會(huì)晤。）
6.He was then able to follow the doctor's instructions on how to care for the patient.
句子中的on意思為“關(guān)于；有關(guān)”，可用about替換。例如：
1）He wrote a book on India. （他寫(xiě)了一本有關(guān)印度的書(shū)。）
2）He gave us a report on the international economy. （他給我們做了關(guān)于國(guó)際經(jīng)濟(jì)的報(bào)告。）
3）They exchanged views on questions of common concern. （他們就共同關(guān)心的問(wèn)題交換了意見(jiàn)。）
care of 在句子中的意思是“照顧”，可用attend； look after替換。例如：
1）The whole society should care for the younger generation. （全社會(huì)都應(yīng)該關(guān)懷年輕的一代。）
2）You can't really find out how to care for children from books. （你從書(shū)本上不可能真正找到照顧孩子的方法。）
care for 還可以解釋為“擔(dān)心”，“介意”，“愿意”，可用about替換for.
1）He doesn't care about/for his clothes. （他不講究衣著。）
2）The old lady cared much for her daughter's safety. （老太太非常為女兒的安全擔(dān)心。
3）Would you care for a cup of tea？ （來(lái)杯茶，好嗎？）
4）I don't care for him to read the letter. （我不愿意讓他看這封信。）
7.The most common use of telecommunication satellites， however， has been for transmitting telephone calls.however
在本句中做副詞用，意思相當(dāng)于but.但是however和but在用法上是有差異的。however不放在句首或句末時(shí)，前后通常都加逗號(hào)，而but則不用。請(qǐng)看例句：
1）It is not， however， the only answer to the question. （然而，這不是問(wèn)題的答案。）
2）I'd like to go and see the films， however，I don't have the time. （我很想去看電影，但我沒(méi)時(shí)間。）
3）However， we still have 10minutes left. （不過(guò)，我們還有十分鐘。）
4）The composition is well written， there is room for improvement， however.
5）I am sorry， but I won't be able to come this time. （很報(bào)歉，我這次不能來(lái)了。）
6）He would like to go， but he was busy. （他想去，但他太忙。）
7）It's not cheap， but it's really good. （這個(gè)不便宜，但的確很好。）
8. Telecommunication can make information from around the world available to use quickly and easily， but some people worry that this may be a risk to our privacy.
available是一個(gè)形容詞，意思是“可得到的；可用的；有效的”。
1）I am sorry those shoes are not available in your size. （很報(bào)歉，那些鞋沒(méi)你的尺碼。）
2）If I am not available when you call， leave a message. （你打電話來(lái)時(shí)如果我不在，請(qǐng)留個(gè)言。）
3）If the tickets is available， I will go to the concert. （如果能弄到票，我會(huì)去聽(tīng)音樂(lè)會(huì)。）
4）The ticket is available on the day of issue only. （此票僅發(fā)售當(dāng)天有效。）
9.We can prevent this from happening by carefully controlling the new technology.
prevent…from…意思為“阻止…發(fā)生”，也可用stop…from…或keep…from.From可被省去。例如：
1）They tried every means to prevent the disease （from） spreading. （他們想方設(shè)法阻止疾病曼延。）
2）Nothing can prevent him （from） going there.（什么也阻止不了他去那兒。）
本課主要詞組及語(yǔ)法要點(diǎn)
詞組：
1. at the beginning of 2.means of
3. over long distance 4. by the middle of
5. such as 6. change into
7. from…to… 8. be capable of
9. not only…but… 10.in theory
11. have access to 12.amount of
13. provide…to… 14.follow sb's instructions
15. care for 16. as well as
17. at the same time 18. make…available
19. pay for 20.isolate…from…
語(yǔ)法：
1.過(guò)去完成時(shí)
1） …both radio and television had be come established means of transmitting sounds and pictures.
2. 非限定性定語(yǔ)從句
1） …radio waves， which are then sent from a station on earth to an orbiting satellite.
2） …back to earth， where another station picks them up and changes them back into television signals.
3） The combination of satellites， which transmit information， computers， which store information， and television， which displays information， will change every home into an education and entertainment center.
2. 賓語(yǔ)從句
1） We must remember that technology alone is not the answer.
2） The satellite also demonstrated how it could provide help to people living in isolated areas…。
3. 注意such as，as well as，as的用法
1） In order to transmit an event such as the Olympics via satellite， …
2） …printed materials such as books and magazines.
3） …as well as get any information they need， …
4） As one telecommunication expert days， …
Text B What People Don't Know about Air
短語(yǔ)表達(dá)
1. without
We couldn't have finished the work so soon without your help.
Without air， there would be no wind or clouds.
2. adv. + past participle
It is widely known that the earth goes around the sun.
It is generally believed that the earth is getting hotter.
3. where
Where there is a will， there is a way.
Where there is hope， there is life.
4. be forced to
He was forced to drop out of school.
They were forced to work 14 hours a day.
5. shelter v.& n.
Mother tried to shelter her from the blow of the tragic news.
You have to find shelter from the blazing sun.
6. protect from
It is necessary that we protect our skin from being burned by the sun.
She had his umbrella to protect her from the sun.
7. deadly adj.
They made a deadly attack on the enemy's air base.
A drop of this poison might be deadly to man.
8. burst
As he braked a tire burst.
All the boys burst from their tents.
Everybody in the room burst out laughing.
The little girl burst into tears.
9. rest upon
His arm rested upon the table.
The task rested upon my shoulder.
His eyes rested upon a strange object.
10. gaze at
He was standing at the window， gazing at the street.
What are you gazing at？
11. not…until
He didn't go out to play until he finished his homework.
No one was to go to bed until further order.
12. in the meantime
His case won't come to court for several months， and in the meantime more than half of the people think him guilty.
At last we were released. In the meantime， our friend had informed the newspaper.
13. pay attention to
Please pay more attention to your spelling next time.
I didn't pay much attention to what he said yesterday.
14. add to
If you praise others more often， you can add great happiness to their life.
What he said just now added to my confusion.