In short, vocabulary acquisition is a complex process; it involves the semantics, syntax and morphology. These were established in the cognition of using special words from the people in the particular case. The language knowledge originates from the language utilization. We must, therefore, get rid of the blind pursuit of the vocabulary. Instead, attach importance to the areas of basic-lever vocabulary and to the prototype significance of word, then covers with other significances. This is the theoretical guidance of the Prototype Theory and the Basic Level Category on vocabulary learning and is also the universal law of human cognition.

Conclusion
The prototype theory which originated in the psychology field and matured in the linguistic area is the cornerstone of cognitive linguistics. It revealed the essence of language that is any language, at any time can not be relative to the specific reality object. This article is precisely based on this point and then union the prototype members as well as the basic level category theory to carry on a preliminary discussion on some partial questions produced during the extending of the prototype members. Certainly, people living in different countries and of different nationalities area would have different understanding and assessment to some prototype members or the basic categories, however, the thousands of years’ accumulation of the genetic code which placed in the brain have a little change. This makes people possibly maintain a consistent and convergent cognition to the majority prototype members or the basic categories. So, I view that the establishment of the prototype theory and the basic lever category over the objective world and people's daily experiences has its existence authenticity as well as the high category efficiency. Both of them not only can easy maintain system's stability but also have great flexibility that can be constructed to provide a flexible space.

The prototype member and the basic category level is the cognition’s important basic point and references, both have the dependent survival material bases and the cognition mechanism which adapt to them. In a word, they three complete each other and show the perfect matches,

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