Many of the "grammar rules" adopted by young children through their daily exposure to the language spoken by the adults around them persist well into their own adult years. As a junior and senior high school English teacher, I had many experiences introducing students to verbs that did not form the past tense with an added "ed" and helping them retrain their inner "ear" to recognize the correct form for many irregular verbs ("I saw" rather than "I seen," for example). It would seem the very young make discernible choices in their application of grammatical rules, and they then apply those rules uniformly in a language that contains many irregularities and exceptions. I am fascinated with the ideas posited by Ruth in her comments, as I do believe our human experience with the "the word," no matter which language we use, assures us of our humanity and provides us with profound opportunities for interaction with others.
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