【正文】 pure water and fresh air which are necessary to our lives.a. A great deal of new subjects, which are actually derived from both natural and social science, has e into existence and enrich the sea of human knowledge greatly.b. A great number of new subjects, which are actually derived from both natural and social science, has e into existence and enriched the sea of human knowledge greatly.Phrasal Verbs 短語(yǔ)動(dòng)詞a. And new ways can be carried out to prevent the pollution and control the population.b. And new ways can be worked out to prevent the pollution and control the population.a. When a motorcycle is started, it gives away a lot of smoke which contains poisonous chemical substances harmful to our health.b. When a motorcycle is started, it gives off a lot of smoke which contains poisonous chemical substances harmful to our health.a. In fact, no one can be denied of the access to opportunity.b. In fact, no one can be denied access to opportunity.a. To grasp a foreign language is not easy, but I will go out of my way to gain success——for my ideal job.b. To master a foreign language is not easy and to be a qualified interpreter is even harder, but I will go all out to gain success——in my ideal job.a. Taking into account of their behavior, we can safely e to the conclusion that these students will waste too much time if they don’t make good use of it.b. Taking into account their behavior, we think it is clear that these students will waste too much time if they don’t study hard on working days.助動(dòng)詞，情態(tài)動(dòng)詞a. To master almost every skill, you can’t but practice.b. To master almost every skill, you must practice.a. We cannot strain our efforts and ignore the rules.b. We mustn’t strain our efforts and ignore the rules.a. Do “l(fā)ucky numbers” really bring good luck?b. Can “l(fā)ucky numbers” bring good luck to us?H. Connectives 連接詞用詞不當(dāng)/用法不當(dāng)a. The sun had just risen, shining brilliantly, everything seemed to be covered with a layer of golden silk.b. The sun had just risen, shining brilliantly and everything seemed to be covered with a layer of golden silk.a. When I walked in the street, there were only some young men who were running in the street.b. While I was walking, I found that there were only some young men running in the street.a. Because a bicycle is not expensive, most families can afford it.b. Since a bicycle is not expensive, most families can afford it.a. So long as I am concerned, I am for the latter.b. As far as I am concerned, I am for the latter.a. And I should get practical experience as much as theories.b. And I should get practical experience while learning the theories.a. No matter they are accepted or not, the interview is a good occasion for them to practice their ability of introducing themselves to others.b. No matter whether they are accepted or not, the interview is a good occasion for them to practice their ability of packaging and selling themselves.a. In my opinion, although setting off firecrackers is one of the traditions that we Chinese have.b. In my opinion, setting off firecrackers is one of the traditions that we Chinese have.a. The first, we have more spare time. ... The second, we have enough time to do something which we like.b. First, we have more spare time. ... Second, we have enough time to do something we like.a. So far as I am concerned, I managed to find a parttime job——tutor an orphan.b. As for me, I managed to find a parttime job——tutor an orphan.過(guò)于絕對(duì)化a. For example, almost everybody had watched apples falling from an apple tree but only Newton discovered the Law of Gravity.b. For example, many people had watched apples falling from an apple tree but only Newton discovered the Law of Gravity.a. With the development of modern transportation, you can get to any place by plane, by car, by ship, or by bicycle.b. With the development of modern transportation, you can get to any place by plane, by car, or by ship.a. In return, I can also learn a lot from foreign countries so that I can serve my motherland.b. In return, I can also learn a lot about foreign countries so that I can serve my motherland better.a. But when the customers are attracted by them and buy the goods finally they will find it of no quality and worth nothing.b. But when the customers are attracted by them and buy the goods finally they will find them of poor quality and worth nothing.a. In a word, firecrackers should be banned for the benefit of all people!b. In a word, firecrackers should be banned for the benefit of most people!a. Man has been able to cure the diseases which were incapable of being cured.b. Man is able to cure the diseases which were incapable of being cured.a. With the rapid development of our society, the campus is no longer an ivory tower.b. With the rapid development of our society, the university campus can no longer be an ivory tower.邏輯不夠嚴(yán)密a. Though it gives us more convenience, the twoday weekend has quite a few problems.