1、Unit3 Computers grammar 4. I have been used in offices and homes since the 1970s. Since the 1970s many new applications have been found for me. He has changed a lot since I last saw him. . Improvement Mini-Writing 请你运用本节所学重要语言知识并根据提示写一篇80字 左右的短文。 提示： 现在，电脑在生活中发挥着越来越重要的作用。现在，电脑在生活中发挥着越来越重要的作用。 借助电脑能解
2、决很多我们以前不能解决的问题。然而，借助电脑能解决很多我们以前不能解决的问题。然而， 随着时间的推移，我们也发现了很多缺点。有些学生花随着时间的推移，我们也发现了很多缺点。有些学生花 了太多时间玩电脑游戏，以致于厌烦了学习。有些人甚了太多时间玩电脑游戏，以致于厌烦了学习。有些人甚 至为此而犯法。至为此而犯法。 就我个人而言，作为一个学生，我们要适当地使用电就我个人而言，作为一个学生，我们要适当地使用电 脑脑。 但不管怎样，电脑在当今生活的确起着重要的作用。但不管怎样，电脑在当今生活的确起着重要的作用。 One possible version: Nowadays, the computer i
3、s playing a more and more important part in our daily life. We can make use of it to solve some difficult problems. However, as time goes by, therere some disadvantages as well. Some students spend so much time playing computer games that they get tired of study.Even some students break the law as a
4、 result of that. Personally, as a student, we should use computer in a proper way. Anyhow, the computer plays a great part in life nowadays. Translation 科技革命 人工智能 计算器 分析器 通用机器 应用 从起 手机 个人电脑 晶体管 technological revolution artificial intelligence calculating machine analytical machine universal machine
5、applications fromon mobile phones personal computer transistor 随着时间的流逝 简化复杂的数学问 题 解决问题 结果 由于 如此以至于 探索太空 高质量的生活 无论如何 over time/ As time goes by/ with time going by simplify difficult mathematical problems solve problems as a result as a result of so that/ such that explore space a life of high qualit
6、y anyway/ anyhow （1）结果，我完全改变了我的大小。）结果，我完全改变了我的大小。 （2）随着时间的推移，我的记忆能力发展得如）随着时间的推移，我的记忆能力发展得如 此之快以至于我从来不会忘记告诉我的任何事此之快以至于我从来不会忘记告诉我的任何事 情。情。 （3）随着时间的推移，我被造得越来越小。）随着时间的推移，我被造得越来越小。 （4）不管怎样，我的目的是为人类提供高品质）不管怎样，我的目的是为人类提供高品质 的生活的生活 (5) (6) (7) Lead-in Are you familiar with these computers? Can you call them
7、? palmtop laptop/ notebook desktop PC WW PC wrist-worn/wearable PC A wristA wrist- -worn PC worn PC has been invented has been invented recently.recently. A penA pen- -like computer like computer has has already already been developed.been developed. The houses The houses have been destroyed have be
8、en destroyed by the storm.by the storm. Lots of beautiful flowers and trees Lots of beautiful flowers and trees have have been planted been planted . . A new bridge A new bridge has been completed has been completed . . 现在完成时的被动语态表示动作发生在过现在完成时的被动语态表示动作发生在过 去去, 到现在已经完成或对现在仍有影响。到现在已经完成或对现在仍有影响。 现在完成时的
9、被动语态现在完成时的被动语态 Understanding the structure of the present perfect passive voice The structure of the present perfect passive voice is: have/ has beened 注意注意: 1. 副词的位置副词的位置 often, usually, always, never, hardly, seldom等副词置于等副词置于have/has和和been中间。中间。 如如: 误误 Such a man has been hardly believed. 正正 Such
10、a man has hardly been believed. 2. 并不是所有动词都有被动语态并不是所有动词都有被动语态 1) happen, take place, break out, belong to, cost, last等不及物动词或词组无被等不及物动词或词组无被 动语态。如：动语态。如： 误误 Great changes have been taken place in China since 1978. 正正 Great changes have taken place in China since 1978. 2) open, break, drop等不强调动作发出者等不强
11、调动作发出者 时常用主动语态。时常用主动语态。 误误 The door has been opened itself 正正 The door has opened itself 4. 一些特殊动词一些特殊动词, 如如borrow, finish, begin, buy, start, return, marry, open, join等构等构 成的现在完成时的被动语态不能与表示成的现在完成时的被动语态不能与表示 一段时间的状语连用。若要表达相应的一段时间的状语连用。若要表达相应的 意思，意思， 则需改换动词或时态。如：则需改换动词或时态。如： 3. 短语动词不可分割或省略其中的介词或短语动词不
12、可分割或省略其中的介词或 副词。如：副词。如： The patients have been taken good care of. How long has this book been bought? How long ago has this book been bought? How long has this book been kept? The film has been started for 10 minutes. The film has been on for ten minutes. Practice Finish the exercise on p21. Practi
13、ce Turn the following into the Passive Voice. 1. We have planted some trees around the lake. Some trees have been planted around the lake . 2. My father has locked the door. The door has been locked by my father. 3. Someone has turned off the light. The light has been turned off by someone. 4. They
14、have rebuilt the bridge. The bridge has been rebuilt by them. 1. Every possible means _ to prevent the air pollution, but the sky is still not clear. A. is used B. are used C. has been used D. have been used 2. Some new oilfields _ since 1976. A. were opened up B. has opened up C. have been opened u
15、p D. had been opened up Put the Chinese into English to complete the sentences. 1. You can see the house _ _ (未油漆未油漆) for years. 2. How many workers _ (已派遣已派遣) to build the railway? has not been painted have been sent 3. Why does Mary look so unhappy? She _ (被嘲被嘲 笑笑) by her classmates. 4. It is said
16、 that the house _ _ (闯进了闯进了) by two thieves. has been laughed at broken into has been 5. _ his views _ (已受已受 到批判到批判) by them? 6. The two pens _ _ (还未被拿走还未被拿走) by him. 7. Where _ the television _ _ (已经修理了已经修理了) ? Have been criticized have not been taken away has been repaired 8. The price of a color
17、TV set _ _ (已降价了已降价了) again. 9. What _ (已被已被 译成译成) into many foreign languages? been brought down has has been translated 改错改错 1. A personal computer has bought by us. A personal computer has been bought by us. 2. Many problems has been found with our new computer. Many problems have been found with
18、 our new computer. 3. A PC has been builded the way we wanted. A PC has been built the way we wanted. 4. Our computer just has been joined to the internet. Our computer has just been joined to the internet. 5. The computer was used every day since we bought it. The computer has been used every day since we bought it. 6. A lot of e-mails had written on the computer in the past 5 years. A lot of e-mails have been written on the computer in the past 5 years.
