Learning sheets for Summary Writing Before class*Tips for writing a good summary1.Change the person(改变人称)bine the sentences (合并句子)e synonyms (同义词的运用)4.Change the voice (主被动语态转换)5. Change the sentence structure (句型转化)6. Summarize (概括)*Take passage A for examplePassage A阅读下面短文，根据其内容写一篇60词左右的内容概要。

Feeding the world’s population is a big challenge, and it is about to get bigger. Right now, a little more than 7.3 billion people share the planet. By 2050, some scientists estimate, the worl d’s population may reach 9 billion. However, the changing climate will probably make feeding this far greater number a very frightening task. That is the conclusion reached by some scientists.Just three crops—wheat, rice and corn—provide more than two-thirds of the calories that people consume. Such crops, and a small number of other important crops, come from farming regions sometimes referred to as “breadbaskets”. However, these areas often occupy a relatively small portion(部分) of the globe. Worse still, the breadbaskets are easily affected by bad weather. Events such as widespread flooding or extended heat wave can kill crops. That’s especially true if the bad weather occurs when a crop is young, fruiting or approaching harvest.Unfortunately, big crop failures in two or more breadbaskets could lead to what researchers call a “food shock”. That means an overall shortage of food would occur. Extreme food shocks used to happen every century. Or to put it another way, that’s only about once in very four generations of humans. However, according to studies, as the climate warms, high and low temperatures become more extreme, and by 2050, food shocks could occur about once every 30 years. In other words, a person born in the middle of the current century might live through two or three extreme food shocksduring their lifetime.So what can people do to help avoid food shocks? Making agriculture efficient is one choice. But one of the most effective ways to fight against food shocks might be to cut down on food waste. “If we could cut food waste in half,” said Seth Cook, a British environmental scientist, “we could feed an extra billion people.”Step1 Careful reading for the key words, phrases or sentences in each paragraph Underline or circle the key information.Para. 1: Feeding the world’s population is a big challenge, and it is about to get bigger. Right now, a little more than 7.3 billion people share the planet. By 2050, some scientists estimate, the world’s population may reach 9 billion. How ever, the changing climate will probably make feeding this far greater number a very frightening task. That is the conclusion reached by some scientists.Para. 2: Just three crops—wheat, rice and corn—provide more than two-thirds of the calories that people consume. Such crops, and a small number of other important crops, come from farming regions sometimes referred to as “breadbaskets”. However, these areas often occupy a relatively small portion(部分) of the globe. Worse still, the breadbaskets are easily affected by bad weather. Events such as widespread flooding or extended heat wave can kill crops. That’s especially true if the bad weather occurs when a crop is young, fruiting or approaching harvest.Para. 3: Unfortunately, big crop failures in two or more breadbaskets could lead to what researchers call a “food shock”. That means an overall shortage of food would occur. Extreme food shocks used to happen every century. Or to put it another way, that’s only about once in very four generations of humans. Ho wever, according to studies, as the climate warms, high and low temperatures become more extreme, and by 2050, food shocks could occur about once every 30 years. In other words, a person born in the middle of the current century might live through two or three extreme food shocks during their lifetime.Para. 4: So what can people do to help avoid food shocks? Making agriculture efficient is one choice. But one of the most effective ways to fight against food shocks might be to cut down on food waste. “If we could cut food waste in half,” said Seth Cook, a British environmental scientist, “we could feed an extra billion people.”After classPassage B阅读下面短文，根据其内容写一篇60词左右的内容概要。

As is known to all, sports stars earn large amounts of money every year. LeBron James, the famous American basketball star, for instance, earns an income of more than 20 million dollars a year. Some people hold the view that these stars do not deserve the high pay that they are getting. Some even argue that sports stars do nothing to society apart from entertaining people. Their contributions to society are much less than those made by doctors, firemen, scientists, professors, etc. But I can never agree with that.While sports are for entertainment, it does not mean that they are not important to people’s life. Why do so many people go to see football matches and NBA games？It is because they enjoy the games, and they are willing to pay to watch the performances. Because of the sports stars, our life becomes more exciting. Some sports stars gain honor for their country, and their countrymen are proud of them. They contribute to the spiritual well-being of their people.What’s more, sports stars usually are at the top of level in their fields. In this world, you have to pay if you want the best. It is the same with sports. Skills in sports are like the skills in works of art. People will not say that Da Vinci’s painting Mona Lisa was bought for too much money. Most stars are skilled in their own field not only because of their talents but also because of their hard training. They have to keep performing at their peak to earn that good income.Their influence on the national economy can not be overlooked. Take NBA in America for example, the stars help to support not only the basketball industry, but also other related industries like sportswear and sports equipment. Sports stars also make constant appearance in advertisements. Since they are well known in the world, they attract many people’s attention, which often leads to an immediate boom in the sales of the products that are advertised by them.I hope one day their accomplishments will be fully recognized.。