议论文要有论点、论据、个人观点。以环保为主题：Protection of Environment There are still many problems of environmental protection in recent years. One of the most serious problems is the serious pollution of air, water and soil
议论文要有专论点、属论据、个人观点。以环保为主题：Protection of Environment There are still many problems of environmental protection in recent years. One of the most serious problems is the serious pollution of air, water and soil
The summer holiday is coming. Our class have a discussion about what to do ring the holiday.
Some are in favor of staying at home. They think it’s both convenient and comfortable. What’s more, they can save money for other purposes. But they will lose the chance of getting to know the outside world. However, others prefer to go out for traveling since it can increase their knowledge and broaden their horizons. But they will spend more money and meet some difficulties while traveling.
In my opinion, it would be much better to stay at home, for I can do what I like, such as reading books, watching TV, and helping my parents with the housework.
Chamberlain, who was the British Prime Minister in the decade before WWII, committed to his belief that the major enemy of Great Britain was Soviet Union and Germany will play a key role at defending the Europe from the invasion of Soviet Union. He continued to believe in his own presumption that Germany was just seeking to be strong enough to defend Europe when Nazi Germany incorporate Austria, Hungary and Czech. He even played an important supporting role in it. But after he was convinced in the fantasy of peace provide by Hitler. Germany kicked him in his back. The WWII brake out and the whole world, including Britain, was dragged into a catastrophe.
Dwight D. Eisenhower, greatest military leader in the Second World War, he has a very famous saying "Chins up!" that is his perpetual principle; Martin Luther King, gained worldwide respect as a leader of civil rights, that " I have a dream" is his firm conviction; Nelson Mandela, an honorable president of South Africa, "peace and unite" is his unchanged principle; and also George W. Bush, his forever belief that " Never tiring, never yielding, never finishing" makes him the incumbent America president.
Copernicus' theory of heliocentricism is sure to be a great achievement in astronomy, however, his great discovery contradicted the traditional and in-powered theological canon which dictated geocentricism , his book was censored and prohibited from the general public, it was not until several years published in other countries did Copernicus first express his ideas to populace.
Just as Francis Bacon, a famous British philosopher, once said:" Histories make men wise; poems witty; the mathematics subtle; natural philosophy deep; moral grave logic and rhetoric able to contend."
Franklin Roosevelt , an eminent politician and economist , was selected president of the U.S.A. in 1932 because of his outstanding proposition of solutions to help the American economy recover from a severe economic depression by means of a series of policies called "New Deal" such as relief policies, renascent and catalyzing solutions etc. and afterwards led American get over that crisis.
Greek mathematician, engineer, and physicist. Among the most important intellectual figures of antiquity, he discovered formulas for the area and volume of various geometric figures, applied geometry to hydrostatics and mechanics, devised numerous ingenious mechanisms, such as the Archimedean screw, and discovered the principle of buoyancy.
Duke Ellington, perhaps jazz music's most prolific composers, continued to create new compositions until late in life. Thomas Edition, who registered far more patents with the U.S. patent office than any other person, continued to invent until a very old age.
1969登月（Apollo 11 moon landing, Neil Armstrong is first person to walk on moon）
The actual moon landing in 1969 was an astounding achievement, both technologically and socially. Many people around the world gathered outside to watch President Nixon make the connection with the astronauts. As they watched on large screen televisions, they could also look up and see the moon - some 240,000 miles away. Surely an unforgettable experience.
Should Examination Be Abolished （取消）？
The examination system has come to be the main theme （主题）of modern ecation. One should take an examination andsucceed in passing it before he could be admitted， promoted or graated. As it plays so important a role in the realm of ecation （教育的领域） it is under much criticism （评论） as to its validity （有效性） . People who are in favour of it try to develop this system more； those who are against it believe that such a system should be abolished. Should examination be abolished？ In my opinion it should be.
Many people think that an examination is the only means to test knowledge， but， in fact， that is not true. A few questions given in an examination could by no means cover the whole field of the subject. Thus those who are able to answer them may be the poorest of the students and yet happen to know just a few points about that subject.
I'd like to say that， because of the existence of the examination system， students pay so much attention to gaining high marks， that they often forget the chief purpose of ecation. The so-called clever students devote （贡献） themselves to the study of textbooks only. They， of course， know nothing but the skeleton （梗概） of knowledge. The end and aim of ecation， however， is to enable students to learn how to live. To do this， students must get themselves to do all kinds of training， physicalas well as mental. The present examination system has discouraged students from making such an attempt.
Moreover， since the students try so hard to put their lessons into memory in as short a time as possible， psychologically （心理上来看）， they soon forget the whole subject as soon as the examination is over. Surely this is one of the greatest wastes ever made in the history of civilization.
Lastly， in order to get high marks， there is a great temptation （诱惑） for students to cheat （作弊） in an examination. Indeed， such a practice becomes the means to the end. They cheat their teachers， their parents and also themselves. Such a tendency would impair （损害） our moral standards （道德标准） .
Therefore， I am of the opinion， in conclusion， that the examination system should be abolished.
It is widely/ often/ generally + claimed/ maintained/ argued/ suggested/ accepted/ supported ...
Some/ Most/ A majority of people + think/ believe/ feel that...
Many/ Some people/ experts (专家) / scientists (科学家) / critics (批评者) / sceptics (质疑者) + argue/ suggest/ maintain/ support/ advocate (愿意倡导，在议论文中也可用来表示赞同)... 在实际写作的过程中可以不同的句式交替使用，让文章在表达明确观点的同时，句法层面也丰富多彩。