4.1 Extracting Rules From Examples

Turn examples into rules

Public information frames the DLAB as a standardized government aptitude test that measures potential to learn a foreign language. That framing matters for grammar practice. The task is not to remember Spanish, Arabic, Russian, or any other real language. The task is to look at unfamiliar examples, infer the rule, and apply that rule to a new item under time pressure.

Use a four-step routine: compare, isolate, state, test. Compare several example pairs. Isolate what changes when the meaning changes. State the rule in plain language. Test it on a new practice-style item. This routine keeps you from guessing based on how English would say the sentence.

Consider an original practice-style mini-system. The examples say lom naka means red stone and lom naki means red stones. The only change is a to i at the end of the noun. A reasonable rule is that final i marks plural nouns. The rule is useful because it predicts that tor naki would mean something with stones, not one stone.

A rule must be narrow enough to survive new examples. If you state the rule as i means more, you may apply it too broadly. If later examples show verbs ending in i for past time, your first rule was too vague. Better wording is final i on this noun marks plural in these examples. Precision protects you from overreach.

Look for paired meanings. Artificial-language drills often give two sentences that differ by one meaning element, such as one versus many, present versus past, actor versus object, or positive versus negative. When only one form changes with that meaning, the form becomes a strong candidate. If several things change, wait for more evidence before committing.

Do not assume that the first word is always the subject or that adjectives always come before nouns. English is only one possible pattern. A practice language might put modifiers after nouns, verbs at the end, or negation after the whole sentence. Your job is to follow the examples, not to normalize them into English order.

Write rules with placeholders. Use N for noun, V for verb, ADJ for modifier, and NEG for negation. A rule such as N ADJ means the adjective follows the noun is easier to apply than a memorized example like stone red. Placeholders also help you transfer the rule to new vocabulary.

Ethical practice stays inside public facts. The DLAB is described in public material as roughly two hours with 126 multiple-choice questions, and public sources list language-category thresholds such as Cat I 95, Cat II 100, Cat III 105, and Cat IV 110. None of that gives an official grammar blueprint. The examples here are original drills for skill building, not protected-item claims.

Rule-extraction checklist

• Compare example pairs.
• Isolate the form that changes.
• State the rule in plain language.
• Test the rule against a new practice-style item.