Grammar guide Updated 2026-09-13

Comparatives and Superlatives: How to Teach Them

Comparatives compare two things and superlatives rank three or more. Almost every adjective builds both from one of two patterns: -er and -est, or more and most. This guide puts both forms on one table, collects the spelling rules that cause the most errors, and lists the mistakes learners repeat most.

The two forms in one line

A comparative sets two things side by side: This bag is heavier than that one. A superlative puts one thing at the top of a group of three or more: This is the heaviest bag in the shop. Which pattern an adjective takes follows its length rather than its meaning, so the rule is worth teaching as a table first.

Spelling rules that cause the errors

• One syllable, add -er and -est. cold, colder, coldest; long, longer, longest.
• Double the final consonant after one short vowel. big, bigger, biggest; hot, hotter, hottest.
• Change a final y to i after a consonant. happy, happier, happiest; busy, busier, busiest. Keep the y after a vowel: grey, greyer, greyest.
• Add only -r and -st after silent e. large, larger, largest; simple, simpler, simplest.
• Use more and most from three syllables upwards. interesting, more interesting, the most interesting.
• Two syllables divide. Adjectives ending in y, -le, -er or -ow take -er and -est: gentle, gentler; clever, cleverer. The rest take more and most: careful, more careful.

than, the and as ... as

Two small words carry most of the meaning: than follows a comparative, and the usually precedes a superlative. English never doubles the comparison, so more taller and the most cheapest are both wrong. A superlative also needs a group to stand in — in the class, of the three — because the tallest on its own leaves the listener asking where.

A four-step teaching sequence

1. Sort before you explain. Hand out fifteen adjectives on cards and ask students to sort them into two piles: those that take -er and -est, and those that take more and most. Most classes reach "count the syllables" without being told, and a rule they found is remembered longer than one copied from the board.
2. Clap the syllables. Say small, happy, useful and expensive out loud, count the beats, and write both forms beside each word. This gives students a test they can run on any adjective later.
3. Drill the repairs. Dictate sentences that need fixing — She is more taller than me, My bag is more heavy than yours — and ask students to correct each one and name the rule they used.
4. Compare for real. Students compare two objects on the desk, then three, then report back in full sentences. The switch from two to three forces the change from comparative to superlative.

The mistakes learners make most often

• Wrong: She is more taller than her brother. — Right: She is taller than her brother.

  One adjective takes one comparative, never both patterns.

• Wrong: This is the most cheap phone in the shop. — Right: This is the cheapest phone in the shop.

  A one-syllable adjective takes -est rather than most.

• Wrong: He is the best of the two players. — Right: He is the better of the two players.

  With two things, use the comparative.

• Wrong: My bag is more heavy than yours. — Right: My bag is heavier than yours.

  A two-syllable adjective ending in y takes -er.

• Wrong: Tokyo is bigger than any city in Japan. — Right: Tokyo is bigger than any other city in Japan.

  Any city includes Tokyo itself.

How to practise comparatives and superlatives

The forms are short and the rules look simple, yet accuracy only arrives with repetition at speed. A short drill puts the adjective into the right shape before the rule can be recalled.

Then mix the pattern with the tenses it sits inside, using the mixed review or the timed challenge. For class use, print the same sentences as a worksheet with an answer key, or combine several topics in the worksheet builder. The adverbs of frequency guide covers the adjective patterns that often appear in the same lesson, and the modal verbs guide handles the auxiliaries that follow.

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Frequently asked questions

What is the difference between a comparative and a superlative?

A comparative compares two things: This road is wider than that one. A superlative ranks one thing against three or more: This is the widest road in the county. The comparative takes -er or more, the superlative -est or most.

How do I know whether to use -er or more?

Count the syllables. One-syllable adjectives take -er and -est: cold, colder, coldest. Adjectives of three syllables or more take more and most: expensive, more expensive, the most expensive. Two-syllable adjectives divide, and those ending in y, -le, -er or -ow usually take -er and -est.

Why is more taller wrong?

More taller uses both patterns on one adjective, and English allows only one. Tall is a one-syllable adjective, so it takes -er: taller. The same rule removes most cheapest, which should be cheapest.

When do I use than and when do I use the?

Than follows a comparative: She is taller than her brother. The normally precedes a superlative: She is the tallest in the class. Only a comparative takes than, and only a superlative takes the before its adjective.

How many comparison patterns should I teach in one lesson?

Keep the first lesson to two patterns, -er and -est with short adjectives and more and most with long ones, plus the irregulars good, bad and far. Add as ... as in the next lesson, once the two basic forms are automatic.

Keep reading

• Adverbs of Frequency: How to Teach Always and Usually
• Present Simple: Rules, Examples and Common Mistakes
• Modal Verbs: How to Teach Can, Could, Should and Must

Every guide on this blog is paired with a free drill: the same rules, applied question by question, with explanations and a printable worksheet.