Grammar guide Updated 2026-10-02
Adjectives vs Adverbs: How to Teach the Difference
An adjective describes a noun; an adverb describes a verb, an adjective or another adverb. That one line answers most questions, and the real difficulty lives in the two places it bends: the -ly words that are adjectives, and the sense verbs where an adjective follows the verb.
The core difference
An adjective adds information about a thing: a tall building, a quiet street. An adverb adds information about an action, a quality or another adverb: She sings beautifully. The question to ask is never what the word looks like but what it points at.
| Word | Points at | Example |
|---|---|---|
| adjective | a noun or pronoun | a slow train; the train is slow |
| adverb | a verb | The train moves slowly. |
| adverb | an adjective or another adverb | extremely slow; very slowly |
That third row is the one learners forget. An adverb is not only a description of an action; it also turns up the volume on an adjective, which is where very, really and quite live.
Where each one goes in the sentence
Position is a reliable second clue, and it rarely fails at A2 and B1.
| Form | Position | Example |
|---|---|---|
| adjective | before a noun | a careful driver |
| adjective | after be and other linking verbs | The driver is careful. |
| adverb | after the verb or its object | He drives carefully. |
| adverb | sentence-initial or final | Suddenly, it rained. / We left quickly. |
| adverb | between auxiliary and main verb | He has already left. |
The adjective in front of a noun and the adjective after be are the same word doing the same job in two places, so present them together rather than as two rules.
How adverbs are built
Most adverbs are an adjective plus -ly: quick to quickly, careful to carefully. Two spelling changes are worth board time: a final -y becomes -ily (happy to happily, easy to easily), and a final -le becomes -ly (simple to simply).
Three groups break the pattern and cause most of the errors.
- Irregular. Good becomes well: a good singer sings well.
- Same form as the adjective. hard, fast, late, early, high and low do not take -ly: He works hard; She drives fast; They arrived late.
- -ly adjectives. Friendly, lovely, lonely, silly and likely are adjectives. For an adverb, use a phrase: She greeted us in a friendly way.
Sense verbs and linking verbs
After feel, look, sound, taste, smell, seem and become, the word describes the subject, so an adjective follows: I feel bad. The soup tastes good. You look tired. I feel badly is grammatical but means your hands cannot feel things well, a physical statement rather than a mood. The same logic runs after be: I am happy, never happily.
Pairs that look like mistakes but are not
Hard and hardly are two words with opposite meanings: He works hard against He hardly works. Late means after the expected time and lately means recently: She arrived late against I haven't seen her lately. Near and nearly, and high and highly, follow the same pattern. Teach them as pairs from the start, because a learner who meets hardly alone will read it as hard.
Adverbs of degree
Very, really, quite, so and too sit in front of adjectives and other adverbs: very tall, really carefully. Very cannot modify a verb on its own, so I very like it fails; use I really like it or I like it very much. The adverbs of degree guide takes this group through the whole scale from slightly to extremely.
Drill 1: adjective or adverb?
Read out twelve gap sentences and have pairs hold up one of two cards, adjective or adverb, before they call the answer. The music is too ___ (loud). She answered ___ (polite). He speaks English ___ (good). The card goes up first and the word comes second, so the choice stays visible.
Drill 2: sense verb snap
Deal cards with sense verbs on one side and adjective or adverb forms on the other: feel / bad / badly, taste / good / well, look / tired / tiredly. Teams snap only when the pair is correct, and they have to say the full sentence to keep the card. The soup tastes good wins the card; The soup tastes well hands it over.
Drill 3: rebuild the sentence
Give each pair a sentence cut into word cards, with two wrong cards hidden in the pile. Pairs build the sentence, find the two extra cards, and explain what each one would have done. She sings good plus a spare well card makes the correction physical, and the explanation is the part that lasts. The same rebuild-and-explain routine appears in the classroom grammar drills page and in the relative clauses guide.
Errors to correct early
- An adjective after an action verb. She sings good becomes She sings well.
- An adverb after a linking verb. I feel badly should be I feel bad when the meaning is a mood.
- An adverb before a noun. a carefully driver should be a careful driver.
- hardly for hard. He works hardly means almost nothing; use He works hard.
- Adding -ly to an -ly adjective. friendlyly is not a word; use in a friendly way.
- very with a verb. I very like it becomes I really like it.
Frequently asked questions
What is the difference between an adjective and an adverb?
An adjective describes a noun or pronoun: a quiet room, the room is quiet. An adverb describes a verb, an adjective or another adverb: She speaks quietly; It is extremely quiet; He drives very carefully. Ask what the word points at before you choose the form.
Why is She sings good wrong?
Because the word describes how she sings, which is the verb, so it needs an adverb: She sings well. Good is an adjective and belongs with a noun, as in a good singer. Well is the irregular adverb that goes with the verb.
Should I say I feel bad or I feel badly?
Say I feel bad. Feel, look, sound, taste and smell are linking verbs, so the word after them describes the subject, and that calls for an adjective. I feel badly means your hands cannot feel things well, which is a physical statement, not a mood.
What is the difference between hard and hardly?
Hard means with a lot of effort, as in He works hard. Hardly means almost not at all, as in He hardly works. They are two different words with opposite meanings, and the same pattern runs through late and lately, and near and nearly.
Are all words ending in -ly adverbs?
No. Friendly, lovely, lonely, silly and likely end in -ly but are adjectives: a friendly teacher, a lonely street. To use one as an adverb, build a phrase instead, as in She greeted us in a friendly way.