本文通过四个实验,具体探讨现代汉语“不”与“没有”的母语习得。实验结果表明,儿童在两岁半左右对“没有”表示“否定物体的存在”已基本掌握;对“不”表示“对心理状态、意愿或可能性的否定”以及“没有”表示“否定动作行为的发生或完成”这样的语义特征随着年龄的增长而逐步习得;但已习得“不”与“没有”用于形容词之前的用法。实验结果还表明,两岁左右的儿童已基本掌握了诸如“完成”、“意愿”、“状态”、“动作”等概念。 Through four experiments, this paper discusses in detail the acquisition of mother tongue in modern Chinese “不” and “无”. The experimental results show that children have basically mastered the existence of the “negative object” at “two and a half years old” or “no” at the age of two and a half, or “the negation of the psychological state, the will or the possibility” And “no ” means “the semantic features such as” the occurrence or completion of negative action behaviors “are gradually learned with age; but” not “and” no “are used for adjectives Before usage. The experimental results also show that children about two years old have mastered the concepts such as ”done “, ”wishes “, ”status “, ”action " and so on.