一. There be 结构
1. There are other techniques that might help you with your studying来源：www.examda.com
2. There is more entertainment in a good book than in a month of typical TV programming.
3. Most curious of all, there was no quality control whatsoever.
4. There were no breaks in the day to relieve the boring work
5. In the past 50 years there has been a great increase in the amount of research being done on the brain
6. There are so many of these paths and so many metal particles that it is impossible to land a flying saucer without its being smashed by one
7. There is much that we can learn from him today
8. There are two sides to every question. If you take one side with decision and act on it with effect, those who take the other side will of course resent your actions
9. There is no sense in leaving important decisions to inexperienced people.
10. There is little sense in treating the child so severely. After all he is too young to know that he was doing wrong
11. There is no surgical patient I cannot treat competently, treat just as well as or better than any other surgeon.
12. There were still situation in which I couldn’t be certain my decision had been the right one
13. There’s no right or wrong in the situation. There’s just luck.
14. There’s no way to prepare for the next time-----no intelligent response to a gun.
15. There’s no way to stop the process of aging. In fact, we can only delay it.
16. There are other indications that high school cheating may be on the rise.
17. There is some evidence that dishonesty may ebb and flow(起伏波动)
18. Today there is evidence that the time between each of the steps in this cycle has been shortened.
19. There can be no doubt that he is the right person for the job.
20. There is no doubt that these measures will contribute to the solution of the problem
21. There’s no doubt that Jim had more talent than anybody who ever played football.
22. There is no substitute for practical experience
23. There is urgent need to debate this issue openly
24. There are two ways in which one can own a book
25. There have been some small fluctuation in the past year,but by and large prices have remained stable.
It   结构
1. It is advisable to exercise patience in dealing with such complicated situation
2. It is advisable to place important telephone numbers next to the phone in case of an emergency
3. It is biologically reasonable for deer to reduce their cost of living to increase their chances of surviving in winter.
4. It is essential that the increase in production should be geared to the increase in public demand
5. It is necessary that young and old people should communicate more with each other
6. It is thoughtless of some parents to allow their children to watch whatever program is on television
7. It is incredible (不可思议)that he ate the big cake just in two bites
8. It was obvious to everyone that the marriage would sooner or later end in separation if not divorce.
9. It was clear that Dad could do no more than he was doing already
10. It is certain that fresh air and exercises are more valuable than medicine
11. It is certain that with determination and hard work you will succeed eventually
12. It was quite apparent that both sides were making a great effort to win the prize
13. It was almost impossible for an Indian to gain even a fair education and extremely difficult ,as a result, for an Indian to rise high in life
14. It is easy to size up (估计)the situation right now. For we are not well informed on recent developments来源：www.examda.com
15. It is not easy to say exactly what each part of the brain does.
16. It is not wise to change your money into U.S. currency
17. It is only recently that science has begun to give us some idea of how the brain really works
18. It will take the council a few weeks to judge the situation before it takes any further action
19. It is well known that many of our problems are caused at least in part by failure to communicate
20. It remains unknown whether there are intelligent beings outside the solar system
21. It is reported that the electronic industry is going on rapidly in recent year
22. It is reported that there has been a decrease in the annual birth rate over the last two decades.
23. It seems to me that the Americans are a highly mobile people. Most of them like to travel whenever they get the chance
24. It seemed to me that the only thing that mattered was to get her husband back to her.
25. It is an encouraging sign that people’s purchasing power is on the rise
26. It is common knowledge that people benefit a lot from reading extensively
27. It used to be a popular belief that we could foretell a person’s future on the basis of the date and time of his birth.
28. It pays in the long run (从长远地角度看)to introduce new technique
29. It may well come as a surprise to learn that not only psychologists but other behavioral scientists have come to accept the positive contribution of work to the individual’s happiness and sense of personal achievement.
递进式结构
1. Fresh vegetables are nutrious; furthermore, they are cheaper than frozen ones.
2. We will not only bring joy into other people’s lives,but also added happiness into our own.
3. But teaching offers something besides money and power:it offers love. Not only the love of learning and of books and ideas ,but also the love that teacher feels for his students
4. They do not seem to like one another very much. Neither are they too keen on conventional people.(正统的人)
主语从句结构
1. What makes it rather disturbing is  the fact that the environment we are living in is going from bad to worse.
2. What I remember then is not her failure, but her courage, the courage to go ahead.
 过渡句
1. This is not necessarily the case, however.
2. Good intentions alone are not enough
3. But modern research has found that this is not so.
4. What does this mean as far as the project hope is concerned?
5. As far as I am concerned, some people are lucky while others seem marked by bad fortune.
6. What is point of being rich?来源：www.examda.com
7. Yet there are advantages to rural life.
 表示重要性或必要性
1. It’s important to set aside time for relaxation,hobbies,and entertainment as well.
2. Improved consumer confidence is extremely important to an economic recovery
3. What is important in both stories that honesty was seen as an important part of the American character.
4. The ability to observe keenly and in detail is necessary for anyone who wishes to become a scientist.
5. To find a solution to a conflict, it is often necessary to make some kind of compromise
6. A harmonious atmosphere is essential(necessary /critical/indispensable)to successful reform
7. It is essential that the increase in production should be geared to the increase in public demand.
8. We should make a careful study of the problem and try to find out a solution to it.
表示目的
1. The purpose of a test is to show what you have learned about a subject
2.  Believe it or not, her only purpose in saying all that is to help you help yourself
3. Competitive sports are recommended to young adults to prepare them for the competitive world of colleges and business
4. The ultimate object of scientific inquiry is to discover the laws of nature.
表示结果
1. Too much work and too little rest may lead to loss of health
2. If you try to learn too many things at a time, you may get confused.
3. We have made numerous attempts to solve the problems,but so far our efforts have been unsuccessful.
4. State financial support given in the form of scholarships has stimulated the students to greater efforts.
5. The pressures of modern urban life have led to increased occurrences of alcoholism and drug abuse ,mental illness, suicide, and divorce in our society
6. We note with satisfaction that all these activities have helped to promote mutual understanding and friendship between two peoples.
7. The population is leveling off(处于平衡状态) in the area as a result of family planning.
表示对比或比较
1. Jobs and work do much than most of us realize to provide happiness and contentment
2. We are much less conscious of the extent to which work provides the more crucial psychogical well-being that can make the difference between a full and empty life.
3. Work is more than a necessity for most human beings;it is the focus of their lives,the source of their identity and creativity.
4. Rather than a punishment or a burden, work is the opportunity to realize one’s potential.
5. Many Americans choose to travel by car rather than by any other means of transportation
6. Generally speaking, young people are less conservative than old people
7. The more scientists find out,the more questions they are unable to answer.
8. Social customs are different from what they used to be fifty years ago
9. Behaviour which may be considered quite strange in one culture is often looked upon as completely normal in another.
表示条件和假设的结构
1. Were it left to me decide whether we should have a government without newspapers or newspapers without a government, I should not hesitate a moment to prefer the latter.
2. Without a degree and with no experience in teaching my chances of getting the job is silm.
3. With the introduction of foreign capital, we hope to step up the development of national economy.
4. Whether day or night,summer or winter,temperatures in the underground world remain equable and nearly constant
表示举例
1. Take,for example, the emergency situations that we encountered almost every night
2. In the case of Lincoln, the story is true
3. Where there is will, there is a way. Your eventual success in the examinations is a case in point.
4. For my own part, everything is O.K. I have nothing to complain of
5. As an example of modern credulity, he cites the widespread belief that lucky numbers bring people good luck.
6. An illustration may make the point clear.
7. Every side of our lives is affected by our jobs such as where we live, what we eat and the company we keep
表示观点、结论或评价
1. We hold these truths to be self-evident that all men are created equal
2. A considerable amount of research shows that people tend to become bored when faced with a situation in which they must do the same thing day in and day out
3. We are positive that our country’s entry into WTO will benefit the development of national economy
4. we have to learn to cooperate with others and many of our own ideas have to be brushed aside for the good of the whole.
5. we have to come to the conclusion ,based on the above-mentioned examples, that there is something in saying that well begun, half done.
6. Studies show that most people believe that smoking is harmful to your health.
7. The successful manager of the opinion that to gain as much as possible from your subordinates you should treat them as your equals.
表示采取措施
1. The government should take effective measures to cope with the current problems
2. Further efforts should be made to decrease the cost of production
3. The local government has set up a number of colleges and technical schools to meet the needs of the rapidly expanding economy in the region.
4. The school authorities have done much in the way of improving working and living conditions for the teachers.
5. Ways must be found to assure our children a decent start in life.
6. In order to stabilize the economy,the government must work hard to lower the rate of inflation
7. A great deal has been done to protect the children from the harmful influence of bad books.