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高二英语第十四单元Satellites（卫星）,http://www.2xuewang.com
Once you step into our village , you’ll see how greatly it has changed .
Once seen , the film will never be forgotten .
5. 介词 + 关系代词型定语从句
There is a rocket motor on the satellite by which the direction of the satellite can be changed if necessary . 卫星上有一个火箭马达，必要时可以用它来改变卫星的方向。
〖明晰〗定语从句的先行词是 a rocket motor , by which 引导一个定语从句。定语从句中介词的选择受上下文的制约，或者与前面的先行词有搭配关系，或者与后面的动词有搭配关系。这里的 by 表“通过、用”。又如：
There are many research stations on the earth in which outer space is studied . (in 与 先行词 research stations 的搭配)
Who is the comrade with whom you just shook hands ?（with 与动词词组shake hands 的搭配）
另外，在定语从句中还有一个省略式的状语的 if necessary ，if 后省略了 it is 。又如：Put in an article where necessary . 在有必要的地方填上一个冠词。
【妙文赏析】
How easy it all was for police and emergency (紧急) service . A siren (警报器) , a flashing light and like magic everyone was out of the way .
Going home from work one night he passed a garage . There in front of him was the answer to his problem . An old ambulance (救护车)was for sale .
The red cross had been removed . But not the flashing light or the siren . He bought it and opened up for himself a dream-world of driving .
It began early in the morning , all his things in the back of the ambulance and the highway in Germany looking reasonably clear . Soon , as always , a long line of traffic was ahead . He turned on the flashing light and set off the siren . Cars quickly slowed and pulled off the fast lane (车道). Other cars stopped and drivers waved him ahead to an open road all his own . In record time he crossed the border into Austria . But then the Yugoslav made his big mistake . Until then he had only stopped for oil . Now he was driving past a real accident — lights flashing too late to realize that it was not another traffic jam (阻塞) as he had expected . Police on the scene had never seen an ambulance do that before . They stopped him . And after hearing the story of his ride across two countries they fined him $18.50 .
1. What was the Yugoslav’s problem ?
A. He met other foreign drivers. B. He couldn’t find an ambulance.
C. He admired police and emergency service. D. He got caught in terrible traffic jam.
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2. He decided to buy the ambulance because ________.
A. he knew other traffic always moved over for it
B. he had always wanted one
C. he hoped to resell it and make money
D. he liked the siren and the flashing light
3. Other cars on the highway slowed down or pulled off the fast lane ________.
A. when they waved to them
B. when they heard the siren or saw the flashing light
C. when the police told them to let the ambulance pass
D. when they saw the red cross on the ambulance
4. When the police stopped him ________.
A. they told him he had been followed all the way
B. he had been driving dangerously
C. they found he had $18.50 in his pocket
D. he had just driven straight past an accident
答案与赏析：1 — 4 DABD 。本篇属于故事类，叙述一个南斯拉夫人买了一辆救护车从德国路径奥地利回国途中的一段奇遇。1. 由于塞车经常被堵在路上才有买救护车的想法，照应了第二段中“There in front of him was the answer to his problem .”2. 顺理成章，买救护车的目的就是为了避免塞车，因为其它车辆都要为救护车让道。3. 警报器、闪亮警灯都是救护车的标志，听到或者看到都会自觉让道。4. 南斯拉夫人以为又是塞车，拉响警报器闯关，但这儿是交通事故，理应停车救护，故警察拦下救护车。
【思维体操】
It was my uncle who taught me how to box. When I was eight , I was (1) into the depths(内地) of(2)to the (3) where my mother had been born. I became (4)of attack for the village boys. When he (5)home from work, my uncle would get to his knees and (6)to hit him on the nose. I have been (7)to him ever since.
One day, (8) my way to school I was surrounded and badly attacked by (9) . It was a terrible (10) , but I (11) my uncle’s advice and decided to fight my attackers. I (12) a tall boy twice on the nose. He fell (13) the ground and blood ran down his (14). All the other (15) away.
We were (16) at school to play some game or other every afternoon and those who (17)to do (18) were punished . I had (19) in football or tennis but I liked boxing.
I read the Boxing News (20) week, and, in the holidays, by (21) a pound or two on tickets, travelled (22) bus into the unknown areas of East and South London to the swimming pools (23)some well known boxers (24) before crowds of (25) people.
1. A. sending B. to send C. sent D. send
2. A. English B. English land C. British D. England
3. A. cottage B. restaurant C. school D. museum
4. A. a subject B. an object C. a point D. a kind
5. A. left B. returned C. went D. remained
6. A. invite me B. forbid me C. refuse D. hate
7. A. useful B. wonderful C. harmful D. thankful
8. A. on B. in C. to D. during
9. A. a fat boy B. a cruel boy C. several boys D. a tall boy
10. A. experience B. experiment C. expression D. excise
11. A. forgot B. offered C. rejected D. took
12. A. strike B. struck C. stuck D. stick
13. A. in B. on C. to D. at
14. A. back B. leg C. arm D. nose
15. A. ran B. kept C. left D. came
16. A. to ask B. asking C. asked D. going to ask
17. A. were persuaded B. failed C. managed D. were told
18. A. which B. them C. such D. so
19. A. much interest B. no interest C. interest D. great interest
20. A. every B. this C. last D. one
21. A. taking B. giving C. spending D. having
22. A. with B. by C. on D. in
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，高二英语第十四单元Satellites（卫星）