人教版高中英语必修2：第1-3单元总结与复习

人教版必修2Unit 1-3复习与巩固
学习目标
重点词句
说明：重点单词短语在各个单元的重点词汇中已经详细讲过，在复习单元不再重复，只就容易用错的部分进行提示和补充。
Unit 1: rare, valuable, survive, vase, amaze, select, design, fancy, style, decorate, artist, belong, remove, wooden, doubt, former, worth, local, apart, painting, evidence, explode, entrance, sink, informal, debate, in search of, belong to, in return, at war, less than, take apart, think highly of
句型：询问别人的看法和表达自己的意见
Unit 2: ancient, compete, competitor, medal, magical, volunteer, homeland, regular, basis, athlete, admit, slave, nowadays, gymnastics, stadium, gym, host, responsibility, replace, motto, swift, charge, physical, fine, poster, advertise, glory, bargain, hopeless, foolish, pain, deserve; take part in, stand for, as well, in charge, one after another
句型：讨论兴趣和爱好
Unit 3: calculate, universal, simplify, sum, operator, logical, technology, revolution, artificial, intelligent, solve, reality, personal, tube, totally, network, web, application, finance, mobile, rocket, explore, anyhow, goal, download, virus, signal, type, coach, arise, electronic, appearance, character, niece; from…on; as a result, so…that, human race, in a way, with the help of, deal with, watch over
句型：做出决定和说明理由
重点语法：
限制性定语从句和非限制性定语从句；
一般将来时被动语态；
现在完成时的被动语态
综合运用：
如何把握文章的主旨大意
style
【点拨】style n. 风格；时尚；类型；字体；vt. 设计；称呼；使合潮流；vi. 设计式样；用刻刀作装饰画
She has a style of her own in everything.
她在各方面都有自己的独特风格。
Boston, you have to admit, has style.
你得承认波士顿很有格调。
I like this style.
我看上了这个式样。
in style流行；时髦地
life style生活方式，生活习惯；格调
come into style 流行起来，变得时髦
decorate
【点拨】decorate的基本意思是“装饰”，指增加色彩或图案设计，也可表示粉刷房屋。引申可表示“授予殊荣”,如奖章、勋位等。
decorate for因……而授予
decorate with用……装饰，以……授予
decorate in/after the traditional style
按照传统风格装饰
My mother likes to decorate rooms.
我妈妈非常喜欢装饰房间。
We decorated the Christmas tree.
我们装饰了圣诞树。
evidence
【点拨】evidence n. 证据，证明；迹象；明显；vt. 证明
She evidenced her approval by promising her full support。
她答应全力支持，以此来表明她的赞成。
He evidenced his accusation with some material evidence.
他以一些物证作为控告的证据。
bear ( give, show) evidence of 有……的形迹(或迹象)，表明，说明；证明
evidence(s) of (或 that) ……的迹象，……的痕迹
present ( produce) evidence 【法律】提供证据
in evidence 到场；看得见，可看见；处于明显的地位；显眼的，明显的，显而易见的
sink
【点拨】sink vi. & vt.下沉；(日、月、星辰等)落，沉落：下跌，下降：慢慢进入
Wood does not sink in water.
木头在水中不会沉没。
The sun is sinking in the west.
日落西山。
The foundations have sunk.
地基已经下陷了。
The price of personal computers will sink again.
家用电脑的价格还要降。
Then she sank in thought.
然后她便陷入了沉思。
My heart sank because I thought he was going to dump me for another girl.
我的心情沮丧，因为我认为他要把我甩了，去追求另一个姑娘。
debate
【点拨】debate vt. & vi. 辩论，争论，讨论；n. 辩论；辩论会
I debated with John upon (about) the question.
我和约翰辩论这个问题。
I debated with myself whether to tell her the truth or not.
我盘算着是否把真相告诉她。
beyond debate 无疑义，无可争辩
The United Nations Security Council will debate the issue today.
联合国安理会今天将辩论该问题。
regular
【点拨】regular adj. 定期的；有规律的；合格的；整齐的；普通的; n. 常客；正式队员；中坚分子; adv. 定期地；经常地
regular army 正规军
regular customers 老主顾
regular education 正规教育
regular figure 匀称的身材
regular price 正常价格
He decided to call off his regular press conference.
他决定取消他的定期记者招待会。
Some of them were very regular.
他们中的一些人是常客。
host
【点拨】host n. 主机；主人；主持人；许多；vt. 主持；当主人招待
If you are the host of the party, you determine the menu.
如果你是宴会的主人，由你确定菜单的选择。
Mr. Marce will host a reception tonight.
马斯先生将主持今晚的招待会。
I like the programme hosted by Michelle.
我喜欢米歇尔主持的节目。
a host of 许多，一大群；众多，大量
host country 东道国；主办国；所在国
host city 主办城市；举办城市
fine
【点拨】fine adj. 好的；优良的；细小的，精美的；健康的；晴朗的；n. 罚款；vt. 罚款； adv. 很好地；精巧地
He has a fine collection of stamps.
他收集了一些精美的邮票。
All the instruments are working fine.
所有的仪器都运转良好。
She was fined $300 and banned from driving for one month.
她被罚款$300，并被禁止驾车1个月。
bargain
【点拨】bargain n. 交易；便宜货；契约；v. 讨价还价；议价；(谈价钱后)卖
bargain…with 与……讨价还价
We refuse to bargain over the price.
我们拒绝在价格上讨价还价。
The worker bargained his services to the highest bidder.
讨价还价后这名工人受雇于出价最高的雇主。
The traveller bargained his watch for food.
这名游客用他的手表交换食物。
solve
【点拨】solve vt. 解决；解答；溶解; vi. 作解答
I must alert him to the need to solve the problem.
我必须使他认识到解决这问题的必要性。
We're trying to solve the difficult problem by ourselves.
我们正设法自己解决这个难题。
This difficulty can easily be solved.
这个问题很容易解决。
explore
【点拨】explore vi. & vt. 探索；探测；探险
They explore each other.
他们互相探索着。
Let us explore the possibilities for improvement.
让我们探索改善的可能性。
There is so much to explore and learn.
他们有很多需要探索和学习的东西。
We devote several days to the exploration of the magnificent Maya sites of Copan.
我们投入了几天时间在科潘宏伟的玛雅遗址考察。
重点词句
take apart
【点拨】take apart拆开；剖析When the clock stopped, he took it apart.
当钟不走时，他把它拆了。
Her new novel was taken apart by reviewers.
她新出的小说被评论家们评得一无是处。
My three-year-old daughter can break things that I can't even take apart.
我三岁大的女儿能将我都不能拆下的东西搞坏。
less than
【点拨】less than 小于；少于；绝不，毫不
Seven is two less than nine.
7比9少2。
The management of many new colleges was less than satisfactory.
很多新建院校的管理不尽人意。
The job was less than perfect. 这工作不十分理想。
We drink less coffee than tea. 我们喝咖啡不如喝茶多。
I regard him less as my teacher than as my friend.
与其说我把他当作老师，不如说我是把他当作朋友。
with the help of
【点拨】with the help of 在……的帮助下，同义短语为with the aid of，with one’s help
What end goal do you hope to reach, with the help of the site?
利用这个网站的帮助，你希望达到一个怎样的最终目标?
With the help of a passer-by, I carried the injured person into a shop.
在一个过路人的帮助下，我把伤者抬进了一家商店.
重点语法：
限制性定语从句和非限制性定语从句的易错点
1. 定语从句和并列句混淆。定语从句和并列句之间的差别在于并列句通常含有and, but等并列连词。例如：
He has two children, and both of ______ are studying abroad.
这个句子含有并列连词and，因此只能填入代词them，而不是whom;
2.分离型定语从句。主要指的是定语从句与它所修饰的先行词之间被其他词隔开的情形。分离型定语从句主要有以下两种类型：
He found the dictionary there he was looking for. 先行词与定语从句被状语隔开。
I saw something in the paper which might interest you.
Something was going to happen that was to change the world. 将定语从句置于句末。
A new master will come tomorrow who will teach you German.
The day will come when we will all have robots.
3. 省略了关系代词的定语从句。定语从句省略关系代词后不容易被看出来，造成理解有误。例如The farmhouse we paid a visit _________ （stand）at the top of the hill.
此题容易误选B或C，认为其中的 to 要么是不定式符号，要么就是介词，但是在此句中 to 的宾语不是其后的动词，而是引导 we paid a visit to 这个定语从句的关系代词 that (在原句被省略)。
4. the way后面的定语从句，关系词若在从句中作状语，相当于“用这种方式 / 方法(=in this way)”时，通常不用关系词，偶尔用that，在较正式的文体里才用in which来引导。
Do it the way you were taught.
要照教你的那样做。
I was impressed by the way in which she did it.
她干成这件事的方式给我留下了深刻的印象。
4. such…as与such …that的区别：
Mr Smith is _________ a good teacher _________ we all respect.
这道题很容易选择such …that,但实际答案为such …as
因为在such … that … (如此……以致……)结构中，that 引导的是结果状语从句，并且 that 在从句中不充当句子成分，若在上句填入 such … that …，句末的 respect 显然缺少宾语(注意：respect 是及物动词)。as 用作关系代词，用以引导定语从句，修饰其前的名词 teacher，同时 as 在定语从句中用作动词 respect 的宾语，句意为“史密斯先生是我们大家都尊敬的一位好老师”。假若在原句的 respect 后加上 him则应选such…that。
被动语态的难点：
1. 谓语含有介词的句子变为被动语态，不能把介词丢下。
She was well looked after when I was away.
当我不在时，她被照顾得很好。
That man over there can be depended on.
那边的那个人是可以依赖的。
2. 被动语态的另外一种表达“get +过去分词”。
He got caught by speeding last night.
他昨晚因超速被抓。
3.主动表被动的情况：需要（need/want/require），be worth doing，以及open, close, shut, lock, move, read, write, wash, clean, cook, cut, wear, carry等表示事物特性的场合。
4. 没有被动语态的情况：
静态动词(如have, lack, fit, hold, suit, resemble?等)通常不用于被动语态；
英语中的不及物动词，译成汉语时却可能是“及物”的，很容易出错，这类动词如：take place(发生)，happen(发生)，come about(发生)，break out(爆发)，appear(出现)，disappear(消失)，last(持续)，arise(出现，发生)等；
5. 某些“be+形容词+to do”结构中的不定式通常要用主动形式表示被动意义。如：
The poem is not easy to understand. 这首诗不容易理解。
Your writing is impossible to read. 你的书法没法认。
Do you think the water is safe to drink? 你认为这水喝起来安全吗?
注：这类结构的特点是句子主语就是其后不定式的逻辑宾语，按理说其中的不定式要用被动形式，但习惯上却要用主动表被动。这类形容词常见的有awkward, convenient, dangerous, difficult, easy, hard, impossible, interesting, nice, pleasant, safe, tough, tricky, unpleasant 等。
综合运用：
如何把握文章的主旨大意
要把握文章的主旨大意，需要分两步走。第一步，仔细阅读文章的首末段的首末句。因为英语文章段落结构大多是段首即提出观点。此外，西方人说话向来喜欢开门见山。所以英语文章段落70%都是一上来交待作者的写作目的或意图。第二步，要仔细阅读其他段落的首句。然后把这两步综合起来，英语文章的主旨大意就可以把握住。
1.常见的主题型题干：(包括文章大意和段落大意)（main idea, topic, subject, theme, ）
⑴ the main ideas of this passage is that _______________.(填空式)
⑵ the passage is mainly about _________________.
⑶ the last paragraph is chiefly concerned with ________________.
⑷ which of the following statements best expresses the main idea of the article?(问题式)
⑸ what is the topic/subject of the article?
(6) Which proverb best matches the story? (文意与成语匹配类)
2. 常见标题型题干：（title, headline）
⑴ the best title/headline for this passage might be _________________.
⑵ which of the following is the best title for the passage?
3. 常见目的型题干：(purpose)
⑴ the author’s main purpose in writing the passage is ______________.
⑵ the passage is meant to _________________.
⑶ the purpose of this article is ________________.
1.文章主旨给出的四种形式:文首,文中,文尾,没有明确主旨。但试题中有主旨大意题，文段肯定有比较明确的主旨，而且出现在问首、文尾或者段首的概率很大；着重理解首末段,首末句；主旨在文章中间的情况(非文首文尾)，遇到文章前后段意思转折,提高警惕；
2.主旨题的解题技巧：不管它出现在文章的什么位置，都作为最后一道题去做，因为做完其他题以后会对主旨的理解有帮助；
3.主旨题的注意事项：
段落中出现转折时,该句很可能是主题句
作者有意识的反复重复的观点通常是主旨
首段出现疑问句时，对该问题的解答就是文章主旨
提出文章主旨时常伴有的文字提示:therefore, thus, but, however, in short等等
4.选项特点：
正确选项特点：不出现细节信息;不含过分肯定或绝对意义的词
干扰项特点：细节信息明显;过于笼统
技巧举例：
1. 2013年北京卷Passage C Para 3：
The phenomenon of tracking celebrities has been around for ages. In the 4th century B.C., painters followed Alexander the Great into battle, hoping to picture his victories for his admirers. When Charles Dickens visited America in the 19th century, his sold-out readings attracted thousands of fans, leading him to complain (抱怨) about his lack of privacy. Tabloids of the 1920s and 1930s ran articles about film-stars in much the same way that modern tabloids and websites do.
64. What is the main idea of Paragraph 3?
A. Great heroes of the past were generally admired.
B. The problem faced by celebrities has a long history.
C. Well-known actors are usually targets of tabloids.
D. Works of popular writers often have a lot of readers.
2. How can we measure intelligence? Experts are not completely certain about the answer to this question. However, in solving some problems, monkeys are better than other animals and this is agreed to be a sign of their high intelligence.
In one experiment, the animals had to reach the food at the other side of a fence(栅栏)by walking round. Monkeys quickly saw the solution. Dogs were not so certain, while hens simply rushed at the fence, trying to reach the food directly. In the second step of the experiment, the animal could not walk round, but there was a rope connected to the food. Monkeys pulled the rope and the dogs didn’t know what to do though they could easily pull the rope with their teeth.
The main idea of the passage is that_____.
A. monkeys are cleverer than other animals
B. it’s difficult to measure intelligence
C. experts are trying to find a way to measure intelligence
D. monkeys, dogs and hens are good animals
3. 2018年湖北卷Passage B
London’s newest skyscraper (摩天大楼) is called the Shard and it cost about 430 million pounds to build. At a height of almost 310 metres, it is the tallest building in Europe. The Shard has completely changed the appearance of London. However, not everyone thinks that it is a change for the better.
58. Which would be the best title for the passage?
A. The Shard: Cheers and Claps
B. The Shard: Work of a Great Architect
C. The Shard: New Symbol of London?
D. The Shard: A Change for the Better?
阶段训练
一、根据下列句子意思用所给词的正确形式或所给汉语填空
1. Knowing that a good education is _________ (value), the farmers began to send their children to school.
2. Of all the museum paintings, only one ___________ (survive) the terrible fire.
3. Chime bells (编钟) dug out in Suizhou is really an ____________ (amaze) discovery.
4. A lady may spend hours __________ (select) a pair of shoes to match her dress.
5. The sitting room is __________ (decorate) with a Christmas tree and looks warm and beautiful.
6. This weekend will see a ___________ (招待会) for the new president.
7. Do you know that? Soap and cold water will ________ (去除) most of food stains.
8. The ________ (本地的；当地的) newspaper regards itself as the voice of the community.
9. Here are some phrases that people use in their __________ (formal) conversations.
10. The genetically modified (转基因的) food has been the subject of much ______ (argue).
二、用所给词的词组或适当形式填空
1. ________________ (doubt) the computer is one of the greatest inventions in human history.
2. That farm ____________ (belong) our family for quite a long time.
3. Actually, it is what you are rather than who you are that __________ (matter).
4. The two countries _________(be) at war for five years, and there is no sign of ceasing fire (停火).
5. At that time thousands of people trooped into California _____________ (search) gold.
6. I’ll let you borrow my camera on condition that you lend me your bicycle ___________ (return).
7. Then she led us into the front room, which ___________ (serve) her office.
8. Curious (好奇的) children could __________ (take) a new toy, find out how it works and even put it together again. .
9. We really ________________ (highly) the effort they have made to protect the environment.
10. Antony’s eyes ___________ (light) when the beautiful girl walked into the room.
11. Last year, Amy _____________ (pick) a lot of English by playing with native boys and girls.
12. I suggest that we should __________________ (join) more such activities in future as we did yesterday.
13. Athletes from different nations _____________ (compete) each other in a variety of sports in the modern Olympic Games.
14. Most of the students ____________________ (admit) the key university last year.
15. He ____________ (deserve) lose in the competition because he cheated.
16. She is not fit for the job. We’ve hired a new one ___________________ (place) him.
17. Our monitor will be ______________ (charge) when the head teacher is away.
18. The Olympic symbol ___________ (stand) the union of the five continents and the meeting of athletes from all over the world at the Olympic Games.
19. ____________________ (matter), whoever wants to go to college has to go through the College Entrance Examination.
20. _______________ (apart) playing at school, I go to sports school every weekend.
三、语法填空
阅读下面材料，在空白处填入适当内容（每空1个单词）或括号内单词的正确形式。
The Olympic Games are the 1 (big) sports meeting in the world. There are two sets of Games. 2 is the Summer Olympics, and the other is the Winter Olympics. Both of them 3 (hold) every four years. All countries can take part if their athletes reach the standard to be admitted 4 competitors. Women are not only allowed to join in but play 5 important role. It’s a great honor to host the Olympics. There is as 6 competition among countries to host the Olympic Games as _____7_____ (win) Olympic medals. The olive wreath has been 8 (replace) by medals. But it is still about 9 (able) to run faster, jump higher and throw 10 (far).
四、 完成句子
1. ___________________ the books designed for new learners are easy to understand. (doubt)
毫无疑问，为初学者设计的书是简单易懂的。
2. __________________ 12 years to build the Three Gorges, which later brought about great changes to Chinese economy. (take)
中国人民花了12年建成三峡大坝，它后来给中国经济带来了巨大变化。
3. The horse riding club, ___________________, is becoming more and more popular. (belong)
我姐姐所在的骑马俱乐部变得越来越受欢迎了。
4. The Russians _______________ some furniture and small art objects before the Nazis came. (able)
俄国人民在纳粹党到来之前得以把一些家具和小工艺品搬走。
5. ____________________, he didn’t believe a single word of what I said. (expect)
正如我所预料的，我说的话他一个字也不信。
6. It’s said that they _________________________ for two decades. (marry)
据说他们已经结婚20年了。
7. He hasn’t slept at all for three days. ____________________ he looks tired. (wonder)
他三天没休息，难怪看上去疲惫不堪。
8. After many days’ voyage, they arrived in ___________________ America now. (what)
经过许多天的航行之后，他们到达了如今称为美洲的地方。
9. If you don’t attend the lecture tomorrow, _____________________. (nor)
如果你明天不参加讲座，我也不会参加的。
10. I regret to tell you that you have made _______________________ I have. (as)
很遗憾，你犯的错误和我犯的一样多。
11. It is strange that they should be good friends, especially as they . (common) 令人惊讶的是他们竟然是朋友，尤其是他们没有任何共同之处。
12. So loudly that students in the next room could hear him clearly. (speak)
他说话声音这么大，以至于隔壁的学生都能很清楚的听见。
13. the young beauty was noticed and invited to take a screen test. (before) 不久之后那位漂亮的年轻女士就被注意到了，并被邀请去试镜。
14. Global warming is that all the suggestions deserve to be taken into consideration. (such) 全球变暖是如此重要的一个问题，所有的建议都值得考虑。
15. His failure to in the speech contest is largely due to his lack of confidence. (win) 在演讲比赛中，他没能成功的得第一名很大程度上是由于他缺乏自信。
五、单句改错
1. With time went by, I could understand why my parents were so strict with me.
2. In totally, there were only 20 students watching the New Year Gala in the classroom then.
3. My dream is to provide people with a life at high quality.
4. If we fail to reach the agreed standard, we will be made redo the word test
5. There were such many people in the hall that he was very frightened.
6. As we all knew, class nineteen was consisted of 34students.
7. It's said that the car accidents arose in being overexcited or carelessness.
8. When it comes to how to get along with others, he doesn't know how to do.
9. The construction of the two new railway lines have been completed by now.
10. To beautify our city, the old temple has restored several times, and now it looks brand-new.
六、阅读理解
A sick little girl is being kept alive thanks to her best friend — a dog who carries her oxygen tank on his back. Alida’s faithful dog companion Mr Gibbs has been specially trained to shepherd the three-year-old, who breathes through a tube most of the time. He follows her closely as she plays in her family’s ten-acre land in Louisville, uses the slide or even rides her bike.
Alida was diagnosed with neuroendocrine hyperplasia of infancy（NEHI）when she was just eight months old. Her rare condition has just eight hundred documented sufferers throughout the world, and causes diseased pieces of the lungs to filter oxygen through extra layers of cells, making it hard or almost impossible to breathe. For Alida and her parents, it meant that even a walk in the park was very difficult because oxygen equipment was too heavy for the youngster to be able to carry herself. As parents, they wanted to do something to help their daughter survive despite having a tube following her all the time. The couple found out about “service dogs” from a TV program and realized an animal trained to help the blind could be trained to help Alida. They finally found help in the shape of golden doodle—a retriever crossed with a poodle-dog Mr Gibbs. Now thanks to trainer Ashleigh Kinsley—Alida and Mr Gibbs love nothing more than playing and running around together with the dog acting as Alida’s life saver.
1. What is Mr Gibbs?
A. A pet dog. B. A policeman. C. A doctor. D. A firefighter.
2. When did the doctor know Alida caught the disease?
A. At her birth. B. At the age of eight.
C. Before she was one year old. D. When she was three years old.
3. The underlined part “the couple” in paragraph 3 refers to _______.
A. Alida’s classmates B. Alida’s parents
C. Alida’s doctors D. Alida’s pets
4. How did Alida keep alive?
A. By training her dog. B. By staying with her parents.
C. By playing with her fellows. D. By breathing through a tube.
七、书面表达
假设你叫李华，老师让你们想象未来的汽车是什么样子，根据下面的内容写一篇短文。
1. 将来每个家庭都有了自己的汽车，城市的交通变成了一个大问题。因此，未来的汽车应该是小型的。；
2. 将来汽车的时速大约为65千米/小时，这样可避免造成交通事故。
3.这种汽车只适合在城市里使用，不适合做长途旅行，因此大型汽车还会存在。
4.为了使这两种汽车并存，将来需要修建两种不同的公路。
答案与解析
一、根据下列句子意思用所给词的正确形式或所给汉语填空
1. valuable 2. survived 3. amazing 4. selecting 5. decorated 6. reception 7. remove 8. local 9. informal 10. argument
二、用所给词的词组或适当形式填空
1. Without doubt 2. belonged to 3. rather than 4. at war 5. in search of
6. in return 7. served as 8. take apart 9. think highly of 10. lit up
11. picked up 12. join in 13. compete against 14. were admitted to
15. deserved to 16. in place of 17. in charge 18. stands for
19. As a matter of fact 20. Apart from
三、语法填空
1. biggest 2. One 3. are held 4. as 5. an 6. much
7. to win 8. replaced 9. being able 10. farther/further
四、 完成句子
1. There is no doubt that 2. It took the Chinese
3. to which my sister belongs 4.were able to remove
5. As I had expected 6. have been married
7. It is no wonder that/ No wonder 8. what is called
9. nor will I 10. as many mistakes as
11. have nothing in common. 12. did he speak
13.It wasn't long before/It didn't take long before
14. such an important problem 15. win (the) first place/prize
五、单句改错
1. went bygoing by；或者WithAs 2. In totallyIn total 3. at of
4. made∧to 5. suchso 6. was 7.infrom
8. how改为what；或者do后加it 9. havehas 10.has∧been
六、阅读理解
狗是人类忠实的朋友，在现身生活中，狗帮助人的例子比比皆是，本篇文章讲述的是小狗Mr Gibbs帮助他的三岁的小主人治病的故事。
1.A，细节题，根据第二段中句子：Alida’s faithful dog companion Mr Gibbs has been specially trained to shepherd the three-year-old, who breathes through a tube most of the time.可知Mr Gibbs就是Alida的小狗。
2. C，细节题，根据第二段第一句话可知答案：Alida was diagnosed with neuroendocrine hyperplasia of infancy（NEHI）when she was just eight months old. 她八个月时被诊断患有疾病，也就是在一岁前。故C正确。
3. B，词义猜测题，根据上文，非常明显指的是Alida的父母。
4. D，细节题，根据第一段第二句话：Alida’s faithful dog companion Mr Gibbs has been specially trained to shepherd the three-year-old, who breathes through a tube most of the time.可知Alida就是通过管子呼吸，故答案选D。
七、书面表达
The cars in the future
In the future, with every family having their own cars, traffic is becoming a big problem.
Therefore, I think there will be small car in the future, whose size may be one third of today’s car’s size. If everyone drives small cars in the future, there will be less pollution in the air. And the streets will be less crowded. The small cars can go about 65 kilometers per hour to avoid traffic accidents. This kind of car is only used in the city, but not fit for long trips. So there will also be big cars. And we will have two different kinds of roads for the two different kinds of cars.