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说明文是指通过客观的描述来表现主观的印象 ， 力争通过描绘使内容具 体 、 形象 ， 给人留下难忘的印象 。 在写这类文章时 ， 首先可以从总体上对事物作 概括 ， 使读者对该事物有全面的了解 ， 然后具体介绍 ， 注意写出该事物本身与众 不同的特点 ， 使人过目不忘 。
Family has a great influence on our personal development. If we are from a happy family， we tend to be cheerful and optimistic. If we are brought up in an unhappy one， we may grow up miserable and pessimistic. If we are not loved by our family，we may not learn to love others.
An ideal family should be a place where we can get warmth， help， comfort and strength. It should also be a source of laughter， as laughter is a good means to lessen the tension and pressure we all face every day. A family should be where we cultivate our self⁃confidence， which is crucial to our further development and our mental health.
Since family plays a very important role in our life， it is up to every family member to contribute to the building of such a family. We should be considerate and understandable. We should love and show concern for each other. We should strive to establish a happy family. After all， if every family is happy， the whole society will be stable.