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10. they gave birth to young baby animals 1) 生（孩子）生（孩子） Shes just given birth to a healthy baby girl. 她刚刚生了个健康的女婴。她刚刚生了个健康的女婴。 2) 产生产生 The extraordinary experience gave birth to his latest novel. 这段奇特的经历促成了他的最新的一部小说的诞这段奇特的经历促成了他的最新的一部小说的诞生。生。11.Thus they have, in their return, become the most important animals on the planet.因此，接着它们成为地球上最重要的动物。in ones return 轮到某人，接着轮到他当了班长。He has become monitor in his turn.Youll walk the dog in your turn.轮到你遛狗了。11. They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space. 他们把太多的二氧化碳释放到大气他们把太多的二氧化碳释放到大气层中层中, 这就是使得热量不能从地球这就是使得热量不能从地球上散发到太空中去。上散发到太空中去。阅读下列句子, 注意prevent . from的意思和用法。1. There was nothing to prevent her from doing so.2. We must prevent the water from being polluted.3. The emperor ordered his porters to prevent the speaker entering the building. 阻止，制止归纳 prevent . from的意思是_。from后多跟动词-ing形式(句1、句2)；有时可省略from(句3)。拓展 近义短语有: stop . from 阻止干某事; keep . from 阻止干某事。注意: prevent和stop后的from都可以省略, 而keep . from 中的from则不能省略，如果省略了, 其意义将发生改变。制止、阻止、使不做某事1). No one can prevent the plans _ out.A. to be carried B. from carryingC. not to carry D. from being carried2). They tried to prevent the plane from _ on the runway.A. land B. landingC. to land D. being landed12. whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. 在未来的千百万年中在未来的千百万年中, 生命能否在生命能否在地球一延续将取决于这个问题能否地球一延续将取决于这个问题能否得到解决。得到解决。 depend vi. 相信相信, 信赖信赖;依靠依靠, 依依赖赖 (尤指钱尤指钱); 视视而定而定 You can depend on John he is always on time. 你可以相信约翰你可以相信约翰, 他总是很准时。他总是很准时。I. 根据下列各句句意及所给单词的首字母或汉语提示，写出该单词的正确形式。1. This _ (理论) helps to explain how animals communicate with each other.2. The final cost could be as much as one b_ dollars.3. 31 people have been injured in _ (暴力的) incidents throughout the day.练习坊theorybillionviolent4. Across the g_, sea level varies by hundreds of feet.5. A(n) _ (原子) is so small that we can not see it.6. Smoking is h_ to health, but some people cannot get rid of it. 7. The best way to get that _ (二氧化碳) into the atmosphere is to warm the entire planet.globeatomharmful carbon dioxide8. The new owners have tried to give the restaurant a more family-friendly _ (气氛).9. O_ is a kind of gas that is necessary for most animals and plants to live.10. I was surprised by the _ (出席) of so many people at the meeting. atmosphereOxygenpresenceII. 用括号中所给单词的适当形式填空。1. The ship rocked _ (violent) from side to side, causing many passengers to feel seasick.2. There is a _ (fundament) difference in attitude between these two politicians.3. It is generally accepted that smoking is _ (harm) to our health.violentlyfundamentalharmful4. Our problems have _ (multiply) since last year.5. Scientists want to know whether life _ (exist) on other planets.6. She listened with a _ (puzzle) expression on her face.multipliedexistspuzzledIII. 用适当的介词填空。1. According _ our records, the books you have borrowed should now be returned to the library.2. To begin _, we ought to know what we are studying for.3. When the fire broke out in the movie theater, people lost their heads and ran _ all directions.towithin4. The car came to a stop just _ time to prevent an accident.5. He usually comes to school early. Its very _ him to be so late today.6. A knowledge of physics is fundamental _ any understanding of this problem.7. The smell of rain and wetness was everywhere. It seemed to fill me _ energy.inunliketowith8. When you are young, you dream about all sorts _ things.9. He grows not only vegetables but also flowers in his garden; that is, he grows flowers _ vegetables.10. A seed can grow _ a tree, and trees make up beautiful forests.11. Can you tell me how China is different _ your country?ofas well asintofrom12. _ the past he had to read by candlelight.13. She gave birth _ a fine healthy baby last week.14. In the teachers class, the students often answer his questions _ turn.15. How much oil can be put _ this bottle?Intoininto16. What can we do to keep the disease _ spreading?17. As a result _ what had happened, we decided to change the rules.18. I ve been old enough to earn my living, so Ill no longer depend _ my father.19. Do you know that crocodiles reproduce _ laying eggs?fromofon / uponbyIV. 用括号中所给单词或短语的适当形式翻译下列句子。1. 沙尘暴导致了连锁反应，最后造成火车撞毁。(lead to; chain) 2. 移动电话使得我们不论在何处都能与他人交谈。(make it possible for sb. to do sth.) The sandstorm led to a chain reaction which ended in a serious train crash. Mobile phones make it possible for us to talk to anyone from anywhere. 4. 请你告诉我怎样防止这种事情发生好吗？(prevent . from . )3. 新鲜空气对于身体健康必不可少。(be fundamental to .) Would you please tell me how to prevent this kind of thing from happening?Fresh air is fundamental to good health. 5. 新鲜空气对于身体健康是必不可少的。(be fundamental to . )6. 他除了给我忠告外，还给我钱。 (as well as)He gave me money as well as advice.Fresh air is fundamental to good health.8. 结果，他们拯救了这片森林里90的树木。(as a result)7. 他不知如何回这封信。(puzzle)As a result, they saved 90% of the trees in the forest.He was puzzled (about) how to answer the letter.10. 移动电话使得我们有可能与任何地方的任何人交谈。 （make it possible for sb. to do sth.）9. 现在轮到我们学会如何与别人相处了。(in ones turn)Mobile phones make it possible for us to talk to anyone from anywhere. Now in our turn we must learn how to get along with others.QuizTranslationQuiz I 1. _ (它会变成什么) was uncertain until between 4.5 and 3.8 billion years ago.2. It was not immediately obvious that _ _ (水会对生命的发展 起关键作用).3. _ (为什么恐龙会突然灭绝) still remains a mystery.What it was to becomewater was to be fundamental to thedevelopment of lifeWhy the dinosaurs suddenly disappeared1. _ he referred to in his article was unknown to the general reader. （2007 上海卷）上海卷） A. That B. What C. Whether D. WhereQuiz II 2. _ parents say and do has a life- long effect on their children. （2007 陕西卷）陕西卷） A. That B. Which C. What D. As3. It has been proved _ eating vegetables in childhood helps to protect you against serious illnesses in later life. (2008 上海卷) A. if B. because C. when D. that 4. _ we are sure about is the need to prevent children from being spoiled. (2008 上海春卷) A. What B. Which C. Whether D. That 5. _wants to stay in a hotel has to pay their own way. (2008 浙江卷) A. Anyone B. The one C. Whoever D. Who词组汇总：1.solar system2.according to3.awidely accepted theory4.in all directions5. millions of years 2.6million years6.a cloud of dust7.settle into8.in time9.cool down10.as well as 11.lay eggs12.give birth to13.in ones turn14.preventfrom15.too hot to live on16. as a result of17.depend on
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