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  • 2021-05-10 发布

利用主题句解中考英语阅读理解题

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利用主题句解中考英语阅读理解题 最有效的办法是找出主题句。一篇文章(或一段文章) 通常都是围绕一个中心意思展开的。而这个中心意思往往由一个句子来概括。这个能概括文章或段落中心意思的句子叫做主题句。因此,理解一个段落或一篇文章的中心意思首先要学会寻找主题句。主题句一般具有三个特点:(1) 概括性强:表述的意思比较概括。(2) 结构简单:句子结构较简单,多数都不采用长、难句的形式。(3) 受它支撑:段落中其他的句子是用来解释、支撑或发展该句所表述的主题思想。在一篇短文或一个段落中,大部分主题句的位置情况有三种:‎ 一、主题句在段首或篇首 主题句在段首或篇首的情况相当普遍。一般新闻报道、说明文, 议论文大都采用先总述,后分述的叙事方法。例如:‎ All living things on the earth need other living things to live. Nothing lives alone. Most animals must live in a group, and even a plant grows close together with others of the same kind. Sometimes one living thing kills another, one eats and the other is eaten. Each kind of life eats another kind of life in order to live, and together they form a food chain(食物链)。Some food chains become broken up if one of the links disappears.‎ 第一句即是主题句。这个句子概括了本段的中心意思:“地球上所有的生物要生存都离不开其他的生物”。后面讲述了大量的事实之后,作者指出:如果这些食物链中的一个链环消失,所有的食物都会断掉。所有这些事实都是围绕第一个句子展开的。‎ 二、主题句在段末或篇末 用归纳法写文章时,往往表述细节的句子在前,概述性的句子在后,并以此结尾。这种位于段末或篇末的主题句往往是对前面细节的归纳总结或者所得出的结论。例如:‎ If you buy some well-made clothes, you can save money because they can last longer. They look good even after they have been washed many times. Sometimes some clothes cost more money, but it does not mean that they are always better made, or they always fit better. In other words, some less expensive clothes look and fit better than more expensive clothes.‎ 这段文章前面列举了两件事实,最后一句是对这两个事实的概括:有些价钱便宜的衣服比价钱贵的衣服更好看,更合身。段末这个句子就是主题句。‎ 三、无主题句 有时,一篇文章里并没有明显的主题句。这时我们应该怎样来确定文章的主题或中心意思呢?其实这也不难。我们可以首先找出每一段的中心意思,各段的中心意思往往都是围绕一个中心来展开的,或者说是来说明一个问题的。这个中心或这个问题就是这篇文章的主题或中心意思。‎ Killer bees started in Brazil 1957. A scientist in Sao Paulo wanted bees to make more honey(蜂蜜). So he put forty-six African bees with some Brazilian bees. The bees bred(繁殖) and made a new kind of bees. But the new bees were a mistake. They didn’t want to make more honey. They wanted to attack. Then, by accident, twenty-six African bees escaped and bred with the Brazilian bees outside.‎ Scientists could not control(控制) the problem. The bees increased fast. They went from Brazil to Venezuela. Then they went to Central America. Now they are in North America. They travel about 390 miles a year. Each group of bees grows four times a year. This means one million new groups every five years. Why are people afraid of killer bees? People are afraid for two reasons. First, the bees sting(叮) many more times than usual bees. Killer bees can sting sixty times a minute nonstop for two hours. Second, killer bees attack in groups. Four hundred bee stings can kill a person.‎ Already several hundred people are dead. Now killer bees are in Texas. In a few years they will reach all over the United States. People can do nothing but wait.‎ 这篇短文表面看起来没有主题句,那末怎样来确定它的中心意思呢?按照上面的说明,我们先找出每一段的大意:第一段讲的是killer bees的产生。第二段讲的是 killer bees 的急剧增加。第三段讲的是人们害怕 killer bees 的原因。第四段讲的是 killer bees 已经杀死的人数和将来的状况。从这几段的大意可以看出这篇文章自始至终都是围绕 killer bees 这一中心展开的。换句话说,killer bees 就是这篇文章的主题。‎