He combines creative imagination with true scholarliness.
他兼有创造性的想像力和真正的学者作风。
2 )后缀-let 意思是“ 小型的”, 附在名词后, 构成新的名词。例如:
booklet 小册子；piglet 小猪。
7.The smog may be so thick that airports are closed and chains of collisions occur on the highways. 烟雾有时浓到了致使机场关
闭, 高速公路上发生一连串的撞车事故。
1 )so. that 如此..以至于, 引导结果状语从句。
2 )be closed 关闭；不开放
The road is closed to heavy motor traffic. 此路禁止重型车辆通行。
All the shops in this town a re closed after 9∶ 00 at night.
这个城镇上所有的商店晚上9∶ 00 后都关门打烊了。
3 )occur 在这里的意思是“发生”, 是动词。
When and how did the fire occur？火灾是什么时候, 怎样发生的。
occur to 想起, 想到
Did it ever occur to you that you should consult a lawyer？
你是否曾想到过你应该咨询一位律师？
An idea occurred to me that helped us to finish the job very quickly.
我想到的主意使我们非常快地完成了工作。
8.The smog is due to invisible gases, mostly from automobile exhaust.
这股烟雾是由看不见的气体构成, 成分大部分是汽车废气。
1 )(be)due to 由于, 起因于
His success is entirely due to hard work.
他的成功完全来源于他的辛苦劳动。
Many young trees froze to death due to the heavy snow last night.
由于昨夜的大雪许多树都冻死了。
2 )前缀auto-表示的意思是“ 自动的；自主的”或“ 自己的”。可以构成各种词性的词。例如: automation 自动化作业(名词)；autograph 亲笔签名(名词或动词)；autobiography 自传(名词)。
3 )exhaust 在这里名词, 意思是“ 排出之废气”。
The exha ust from the traffic cars in the city is the main cause of the polluted atmosphere.
城市里车辆排出的废气是大气受到污染的主要原因。
exhaust 作为动词, 意思是“ 用尽；耗尽；使排空”。
He lay down utterly exha usted. 他筋疲力尽地躺下。
Gases from an automobile exha ust from a pipe.
汽车中的各种废气经管子排出。
练习答案
课文A 练习
I. 阅读理解:
1. d 2. c 3. a 4. a 5. b
II. 找出下列单词或短语的同义词:
1. extinct 2. species 3. offspring 4. likelihood 5. fur 6. trophy 7. survive 8. preserve 9. warden 10. wildlife reserve III. 把下列单词变成名词:
1. existence 2. extinction 3. likelihood 4. variety 5. creation 6. death 7. determination8. arrangement 9. development 10. clearance IV. 根据课文完成句子或回答问题:
1. it fails to produce enough young in each generation to keep pace with the deathrate
2. We can tell from fossil evidence in rocks that many living species have become
extinct over the millions of years since life began.
3. Extinction means that an animal species disappears forever.
4. Hunters.
5. It is because of the great financial rewards.
6. They do for trophies.
7. the killing of the Canadian seals
8. One way is to remove them to zoos and parks and breed them there. Another
method is to protect the animals in their natural environment by creating wildlife
reserves and parks and using game wardens to look after them.
9. We can get great pleasure in watching wildlife in natural or near-natural environments.
V. 把下列句子译成英语:
1. The natural environment in which animals live has been becoming worse.
2. Hunters often hunt for their own purposes, regardless of the public living envi- ronment.
3. If there are no natural reserves, it is likely that more animals will become extinct.
4. Countless examples can be given of the way in which natural environments are being rapidly changed.
5. Another effective measure is to protect animals by creating wildlife reserves and parks.
词汇练习
I. 用所给单词的正确形式填空, 注意词性:
1. a. special b. specialized c. specially 2. a. publicity b. publicize c. public 3. a. variation b. vary c. various 4. a. tourism b. tourists c. tour 5. a. survival b. survivors c. survived II. 用下列所给单词的正确形式填空:
1. Fossils 2. Species 3. Tourism 4. extinct 5. by-product 6. offspring 7. compete 8. fate 9. threat 10. pace III. 把下列句子译成英语:
1. He finds it very difficult to keep pace with the progress of physics.
2. Now China can compete with most countries in the world.
3. Provided we work hard, there is every likelihood that we can do better.
4. More and more people are concerned about our natural environment.
5. This warship is armed with nuclear weapons.
6. Provided you don’t let it out to anybody, I will tell you the truth.
7. We’re very glad that he could survive the heart attack.
8. The danger can’t be ignored that tigers may become extinct in our country.
课文B 练习
I. 根据课文判断下列句子正确与否:
1.× 2. √ 3. √ 4. √ 5. √ 6. √ 7.× 8.× 9.× 10.×
II. 根据课文填上所缺的内容:
1. smoke, fog 2. coughing, straining for breath
3. heart and lung 4. chemicals
5. guide 6. furnaces
7. chemical fumes, water droplets 8. temperature inversion
9. photochemical smog
10. exhaust fumes, nitrogen oxides, sulphur dioxide, oil refineries
词汇练习
I. 从右边一栏中找出与左边一栏单词相应的定义:
1. e 2. d 3. a 4. b 5. c
II. 选择填空:
1. B 2. A 3. D 4. C 5. A
III. 用课文B 中所学的单词填空, 首字母已经给出:
1. exhausted 2. conclude 3. inversion 4. suffering 5. strained 语法练习
I. 把下列句子译成汉语, 并解释为什么句子倒装:
1. 我很少见到她这么不高兴。(因为否定副词seldom 置于句首)
2. 只是最近他才有机会回家乡看一看。(因为副词only 置于句首)
3. 他不仅抱怨食物不好, 还拒绝付款。(not only 置于句首)
4. 电子如此小以至借助于大功率的显微镜也无法看见它们(so 位于句首)
5. 因此于1995 爆发了日俄战争。(thus 这个副词位于句首)
6. 我们年轻而愉快的日子一去不复返了。(主语部分过长)
7. 今年我们一次也没有提高过我们所卖商品的价格。(否定词“ not ”位于句首)
8. 在美国不仅商品价格有很大差异, 而且所销售产品的质量也各不相同。(not only 位于句首)
9. 他几乎没有意识到他所处的险境。(little 位于句首)
10. 他刚放下听筒, 电话就又响了。(no sooner 位于句首)
11. 在我们前面有许多困难。(主语相对长, 谓语太短)
12. 对刚刚回国的那些人的生活, 也进行了描写。(主语过长)
13. 我们买汽车和房子时并不完全听信销售人员, 同样, 买保险时也不完全听信保险代理人。(neither 位于句首)
14. 从前还从未有人因那种特殊罪名被关进监狱。(neither 位于句首)
15. 光速如此之快以至我们很难想像它的速度。(so 位于句首)
16. 这就是对这些表面上似乎无关的事实结合起来所进行的解释。(主语过长)
17. 气体没有固定的形状, 也没有固定的量。(nor 位于句首)
18. 若没钢铁就没有现代工业。(虚拟语气中非真空条件从句省略连词)
19. 他们若没有那么努力, 就不可能取得这么大成就。(虚拟语气中省略连词)
20. 万一明天下雨, 我们就取消聚会。(虚拟语气中非真空条件从句省略连词)
II. 把下列句子按倒装语序译成英语:
1. Hardly had I lain down when the telephone rang.
2. Never has she seen such a wide river.
3. There is a hill behind the house, and there are a lot of apple trees on the hill.
4. Had you come earlier yesterday, you could have seen his father.
5. Nowhere could we find a boat which could carry us across the river.
6. Only in deep forest can we find such wonderful plants.
7. Not until the match began did he come to the playground.
8. Under no circumstances will we use nuclear weapons first.
9. Never does she like the room.
10. Never has he expected that the project can have been finished in such a short time(so soon).
