Purpose
By the end of this lesson, you will be able to distinguish adjectives from adverbs and identify which part of speech each one modifies.Lesson Explanation
Adjectives and adverbs both add description, but to different targets — confusing the two is one of the single most common grammar errors in English. Adjectives modify nouns or pronouns, describing what kind, which one, or how many: “a quick fox,” “three books,” “that idea.” An adjective typically sits directly before the noun it describes, or after a linking verb (from the previous lesson): “The fox is quick.” Adverbs modify verbs, adjectives, or other adverbs, describing how, when, where, or to what degree: “She runs quickly” (modifies the verb “runs”), “an extremely quick fox” (modifies the adjective “quick”), “she runs very quickly” (the adverb “very” modifies another adverb, “quickly”). Many, but genuinely not all, adverbs are formed by adding “-ly” to an adjective: “quick” → “quickly,” “careful” → “carefully.” A frequent, genuine error is using the adjective form where an adverb is grammatically required: “She runs quick” is incorrect; “She runs quickly” is correct, since “runs” is a verb and therefore needs an adverb, not an adjective. A genuinely important exception: after a linking verb (Part 1, Lesson 3), an adjective — not an adverb — is correct, because the description applies to the subject, not to the action of the verb: “She feels bad” (correct — “bad” describes “she”) is different from “She feels badly” (which would describe her sense of touch, not her emotional state) — a distinction many native speakers get wrong in casual speech.Practice Questions
1. What does an adjective modify?
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A noun or pronoun.2. What does an adverb modify?
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A verb, an adjective, or another adverb.3. In “She runs quickly,” what part of speech is “quickly,” and what does it modify?
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An adverb, modifying the verb “runs.”4. In “an extremely quick fox,” what does “extremely” modify?
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The adjective “quick.”5. What ending do many adverbs have?
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-ly.6. Write the adverb form of the adjective “careful.”
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Carefully.7. Is “She runs quick” grammatically correct?
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No — it should be “She runs quickly.”8. Why does “runs” require an adverb rather than an adjective?
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Because it is a verb, and verbs are modified by adverbs.9. After a linking verb, should you generally use an adjective or an adverb?
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An adjective.10. Is “She feels bad” or “She feels badly” correct when describing her emotional state?
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“She feels bad,” since “bad” describes “she,” the subject.11. What would “She feels badly” actually describe, if taken literally?
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Her sense of touch, not her emotional state.12. Where does an adjective typically sit relative to the noun it describes?