语言习得是全人类均具备的通过遗传而得来的能力。人生来就具备一种天赋，或一种生物机制，使他们至少能习得一种语言。
Language acquisition is a genetically determined capacity that all humans are endowed with. Human is biologically programmed to acquire at least one language.
乔姆斯基的语言天赋论认为，人脑中有一种天生的普遍语法，这一普遍语法存在于人脑中一个叫做语言习得机制的地方。
In Chomsky's Innateness Hypothesis, it is held that, in human brain, there is innate Universal Grammar which lies in one part of human brain called language acquisition device (LAD).
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