Language as an important human activity, is not only a communication tool, but also reflects the society and culture. However, in recent years, many minority languages are disappearing and under disappearing. In this paper, firstly, I study the existing state of languages and the existing crisis of many smal categories of languages:Linguists estimate that the amount is more than 6,000. However, at present, 95 percent of languages are used only by 4 percent of the population and 2 kinds of languages disappear in a month. Secondly, I analyze the reason of the disappearing categories of languages:Linguists estimate that at least half the world’s languages died out in the last 500-year period. A variety of factors, such as social origin, historical origin, and so on, contributed to this trend of language extinction. And at the end, I suggested the significance of language preservation and some means to protect linguistic diversity.
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