Sometimes we make friends with unexpected （料想不到的） people. For example, who has ever thought that a spider would make friends with a pig? But in E. B White's classic novel Charlotte's Web, this is exactly what happens.
In the story, Wilbur is an unlucky pig. When he was born, he is so small that the farmer wants to end the pig's life. Luckily, the farmer's daughter stops him from killing Wilbur and decides to raise the pig in a barnyard（谷仓的院子）.
Wilbur grows day by day and makes many friends in the barnyard, the spider, Charlotte is one of them. However, one day a sheep tells Wilbur that he will be served up as dinner. But Charlotte has decided to save her friend from this danger. By making words such as"famous pig" in her web（网）, she makes the farmer believe that Wilbur is some kind of amazing animal, too important to kill. After Wilbur is saved, Charlotte is so tired that she finally dies.
Actually, the writer makes a spider the hero of the book. Many people are afraid of animals like spiders. But Charlotte does everything in her power to keep Wilbur alive. It shows how a strong friendship can last through the worst possible time.
