Section 2.3 Descriptive Rules
Descriptive rules are the patterns that speakers naturally acquire as they learn their native language. These rules are not taught explicitly; children figure them out from the language they hear around them. By the time most children start school, they have already mastered thousands of these rules, even if they couldn’t articulate a single one.
Native Speaker Intuitions.
One way linguists identify descriptive rules is by consulting native speaker intuitions. If you’re a native English speaker, you know—without being taught—that “the big red balloon” sounds right while “the red big balloon” sounds odd. You know that “she walks” needs an “-s” but “they walk” doesn’t. You know that “I saw her” is grammatical but “I saw she” isn’t. These judgments reflect your unconscious knowledge of English grammar.
Descriptive rules are remarkably consistent across speakers of the same dialect. Ask a hundred native English speakers which sounds better, “The cat sat on the mat” or “The cat the mat on sat”, and all hundred will choose the first. That consistency reflects shared grammatical knowledge.
These rules are also remarkably complex. Linguists have been studying English syntax for decades and still haven’t fully described all the rules that native speakers know intuitively. Your knowledge of English is deeper and more sophisticated than any grammar book can capture.
The Implicit Knowledge of Native Speakers.
Consider what you know about English question formation. To turn a statement into a yes/no question, you move an auxiliary verb to the front:
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Statement: She can speak French.
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Question: Can she speak French?
If there’s no auxiliary, you add “do”:
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Statement: She speaks French.
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Question: Does she speak French?
But how do you know which word to move in complex sentences?
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Statement: The man who is tall can speak French.
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Question: Can the man who is tall speak French? (correct)
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Not:
Is the man who tall can speak French?(wrong)
You move the auxiliary from the main clause, not from the embedded relative clause. No one taught you this rule—you figured it out. And every native English speaker follows it perfectly, even though few could state the rule.
This is what linguists mean by "tacit" or "implicit" knowledge: rules you follow without conscious awareness.
Word Order and Meaning.
Some of the most fundamental descriptive rules involve word order. In English, word order determines grammatical relationships and meaning. “The dog bit the man” means something entirely different from “The man bit the dog”, even though the two sentences contain exactly the same words. English relies heavily on word order because it has relatively few inflectional endings (unlike Latin or Russian, where endings mark grammatical relationships).
Other word order rules are equally systematic. Adjectives normally precede nouns (“the red house”, not “the house red”—though French speakers say “la maison rouge”). When multiple adjectives appear, they occur in a specific order:
Opinion → Size → Age → Shape → Color → Origin → Material → Purpose
That’s why “a beautiful big old rectangular green French silver whittling knife” sounds natural while other orders sound wrong. Native speakers follow this rule without ever being taught it or even knowing it exists. Try saying “a green rectangular old big beautiful knife”—it sounds bizarre.
This adjective-order rule is so deeply ingrained that most English speakers can’t articulate it. When linguists discovered and described this pattern, many native speakers were astonished: "I’ve been following a rule I never knew existed!"
Natural Acquisition.
Children acquire descriptive rules through exposure to language, not through instruction. A child who hears (walked, jumped, played) will eventually produce “goed” instead of “went”—evidence that they’ve extracted the rule for past tense formation and are applying it productively.
These "errors" are actually signs of sophisticated linguistic development. The child isn’t making a mistake; they’re demonstrating that they’ve learned the regular past-tense pattern and are generalizing it. Eventually, children learn that “go” is irregular, but the overgeneralization shows that they’re not just mimicking what they hear—they’re building a rule system.
Consider the acquisition sequence:
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Child hears went and uses it correctly (memorized form)
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Child discovers the -ed rule from other verbs
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Child applies the rule to go and says goed (overgeneralization)
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Child eventually learns that go is an exception
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Child returns to went (but now understands it differently)
Stage 3, the "error" stage, is actually the most cognitively sophisticated—it shows the child has extracted and is applying an abstract rule.
Descriptive Rules in Non-Standard Dialects.
This natural acquisition process explains why descriptive rules are so consistent and so robust. They’re built into the language-learning capacity of the human mind. Prescriptive rules, by contrast, must be consciously learned, and even highly educated speakers often fail to follow them in spontaneous speech.
Importantly, non-standard dialects have their own descriptive rules—patterns that are just as systematic as those of Standard English. African American Vernacular English (AAVE), for example, has grammatical rules for:
Habitual "be": “She be working” means she works regularly (habitually), whereas “She working” means she’s working right now. Standard English can’t make this distinction with a single word.
Negative concord: “I don’t want nothing” uses multiple negatives for emphasis, following a systematic rule (not random negativity).
Copula deletion: “She nice” follows a predictable pattern—the copula “is” can be deleted exactly where Standard English can contract it (“She’s nice”), but not elsewhere.
These patterns aren’t "broken" Standard English; they’re rule-governed features of a different variety. Speakers of AAVE who use these forms are following their grammar, not failing to follow Standard grammar.
