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. So he put forty-six African bees with some Brazilian bees. The bees bred 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 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. 【查看更多】
