Failure Is the Mother of Success
    All of us experience faihtre every now and then. A merchant may fail in his business, a clerk may fail in his duty, and a student may fail in his examination. Failure or the threat of faihtre is something that we have to live with all our lives.
    Althoug, h some people will avoid failure at all costs, some people welcome it. Failure can be a good teacher. It always teaches us to be better the second time around. As they say, 'The more you try, the more you'll succeed.'
    There is some wisdom to be learned from failure. If we can learn to turn a failure to our advantage, we will have learned another secret to success. Failure is the mother of success and success that comes after failure is so sweet.
    短文第一段的发展句，以具体事实阐明段首句“我们时而都会经历失败”的中心思想。第二段的发展句，说明段首句“有些人欢迎失败”的原因。第三段讲“从失败中我们可以学到一些智慧”，发展句对此做出进一步阐述，最后扣住全文的主题“失败是成功之母”。