Comparison of Adverbs — English Grammar Exercises
He explained it more clearly than the teacher did, but she still sings better than anyone — master every adverb comparison pattern.
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Most adverbs use more / most
Adverbs ending in -ly form the comparative and superlative with more and most:
| adverb | comparative | superlative |
|---|---|---|
| clearly | more clearly | most clearly |
| carefully | more carefully | most carefully |
| often | more often | most often |
Short adverbs — same form as the adjective
Some adverbs have the same form as the adjective and take -er / -est:
| adverb | comparative | superlative |
|---|---|---|
| fast | faster | fastest |
| hard | harder | hardest |
| late | later | latest |
| early | earlier | earliest |
| high | higher | highest |
Irregular adverbs
| adverb | comparative | superlative |
|---|---|---|
| well | better | the best |
| badly | worse | the worst |
Common mistakes
| ❌ | ✅ |
|---|---|
| He runs more fast. | He runs faster. |
| She speaks French gooder. | She speaks French better. |
| He works hardlier. | He works harder. |
| She did more bad in the second test. | She did worse in the second test. |
as … as, the modifiers much / far / a bit, and farther/further, less/fewer are practised in Superlatives and Irregular Comparison.
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He explained the problem ___ than the teacher did.
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more clearly
Adverbs ending in -ly take 'more' for the comparative. 'Than' signals a comparison, so the plain 'clearly' and the superlative 'most clearly' don't fit.
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Of all the students, she works ___.
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most carefully
'Of all the students' signals a superlative: -ly adverbs take 'most' — 'most carefully'. 'More carefully' would compare only two people.
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She runs ___ than her brother.
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faster
The adverb 'fast' has the same form as the adjective and takes -er — 'faster', never 'more fast'.
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She drives ___ than her husband.
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more slowly
Adverbs ending in -ly take 'more' for the comparative — 'more slowly'.
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I sing ___ than I used to.
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better
The comparative of the adverb 'well' is irregular — 'better', never 'more well'. 'Best' is the superlative.
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I did ___ in the second test than in the first.
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worse
The comparative of the adverb 'badly' is irregular — 'worse', not 'more badly'. 'Worst' is the superlative.
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He answered ___ than the other candidates.
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more intelligently
Adverbs ending in -ly take 'more' for the comparative. 'Than' rules out the plain form and the superlative.
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She arrived ___ than the others.
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later
'Late' is a short adverb and takes -er — 'later', not 'more late'. 'Lately' means 'recently'.
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He finished the exam ___ than everyone else.
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sooner
'Soon' is a short adverb and takes -er — 'sooner', never 'more soon'.
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Of everyone in the class, Tom writes ___.
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most neatly
'Of everyone in the class' signals a superlative: -ly adverbs take 'most'.
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Of all the singers, she performed ___.
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most beautifully
'Of all the singers' signals a superlative: -ly adverbs take 'most' — 'most beautifully'.
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Of all the students, he speaks French ___.
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the best
The superlative of the adverb 'well' is irregular — 'the best'. 'The better' compares only two people.
Comparison of Adverbs: More, Most, and the Short-Form Exception
Most English adverbs are formed by adding -ly to an adjective ('careful' → 'carefully'), and these -ly adverbs form their comparative and superlative with more and most, exactly like long adjectives: 'more clearly', 'most carefully'. A separate, smaller group of adverbs has the same form as the corresponding adjective and instead takes -er/-est, just like a short adjective: 'fast', 'hard', 'late', 'early'. Learners frequently apply the -ly rule to this whole class, producing forms like 'fastlier' or 'more fastly' — neither of which exists, because 'fast' as an adverb behaves exactly like 'fast' as an adjective. A third, high-frequency group is irregular: 'well' and 'badly' do not derive their comparative from their own form at all, but borrow the adjective's irregular pattern. These 45 exercises separate those three systems — regular -ly adverbs, short-form adverbs, and irregular adverbs.
Regular -ly Adverbs: More and Most
Adverbs formed by adding -ly to an adjective take more for the comparative and most for the superlative, regardless of length: 'more clearly', 'the most carefully', 'more intelligently'. There is no -er/-est option for this group — 'clearlier' and 'carefullest' do not exist. This mirrors the rule for long adjectives, which makes sense because most -ly adverbs are themselves built from adjectives that already require more/most.
Of all the students, she works most carefully.
She spoke more quietly than usual because she was nervous.
Short-Form Adverbs: The Same Form as the Adjective
A closed set of common adverbs — fast, hard, late, early, near, high — has no -ly form at all and is identical to the adjective. These adverbs take -er/-est directly, exactly like short adjectives: 'faster', 'harder', 'later', 'earlier'. A frequent confusion involves 'hard' vs 'hardly': 'hardly' is a completely different word meaning 'almost not', with no comparative form, so 'more hardly' meaning 'with more effort' is always wrong.
He works harder than anyone in the office.
She arrived earlier than the others.
Irregular Adverbs: Well and Badly
The adverbs well (from 'good') and badly (from 'bad') have irregular comparatives and superlatives that mirror their adjective counterparts rather than following any adverb rule: 'well' → 'better' → 'the best'; 'badly' → 'worse' → 'the worst'. Errors here — 'weller', 'more well', 'the most well' — persist even after the regular -ly rule has been mastered, since irregular forms require separate memorisation.
Of all the students, he speaks French the best.
The team played worse in the second half than in the first.
Common Mistakes
✗ She runs more fast than her brother. → ✓ She runs faster than her brother. (short-form adverb takes -er)
✗ He works more hardly than anyone. → ✓ He works harder than anyone. ('hardly' means 'almost not' — unrelated word)
✗ She arrived more early than the others. → ✓ She arrived earlier than the others.
✗ I sing weller than I used to. → ✓ I sing better than I used to. (irregular comparative of 'well')
✗ She speaks French gooder than her sister. → ✓ She speaks French better than her sister.
✗ She did more bad in the second test. → ✓ She did worse in the second test.
Comparisons with as … as, the modifiers much, far and a bit, and the irregular farther/further and less/fewer are practised in Superlatives and Irregular Comparison.
Frequently Asked Questions
How do you form the comparative of an adverb?
Most adverbs end in -ly ('carefully', 'clearly') and form the comparative with 'more' ('more carefully'), never with -er. A small group of adverbs — 'fast', 'hard', 'late', 'early' — has the same form as the adjective and takes -er directly ('faster', 'harder'), just like short adjectives. A few adverbs, notably 'well' and 'badly', are irregular ('better', 'worse') and don't follow either pattern.
What is the difference between 'hard' and 'hardly'?
'Hard' as an adverb means 'with a lot of effort or force' and has the regular comparative 'harder' — 'He works harder than anyone.' 'Hardly' is a completely different word meaning 'almost not' ('I hardly know him') and has no comparative form at all. Learners sometimes produce 'more hardly' to mean 'with more effort', but this is always wrong — the correct comparative of 'hard' is simply 'harder'.
Why is the comparative of 'well' irregular?
'Well' is the adverb form of the adjective 'good', and English keeps the same irregular pattern across both word classes: 'good/well' → 'better' → 'the best'. Because 'well' and 'better' don't look related at first glance, learners often try to regularise the form ('weller', 'more well'), especially since the adjective rule (more + long word) seems like it should apply. These irregular forms simply have to be learned as a set, alongside 'badly → worse → worst' and 'far → farther/further'.
How do you use 'as...as' with adverbs?
Between 'as' and 'as', use the base form of the adverb, never the comparative — 'as fast as', not 'as faster as'. With the irregular adverb 'well', the pattern is 'as well as', not 'as good as' (a common error, since 'good' is the adjective form, not the adverb). 'Not as...as' is the everyday way to express an unequal comparison: 'He doesn't dance as well as he used to.'
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