Grammar guide Updated 2026-10-02

Comparatives and Superlatives: How to Teach Them

Comparatives and superlatives are decided by three rules asked in order: how many syllables the adjective has, how it ends, and whether it is irregular. Teach the rules before the word list, and have learners say the form aloud before they write.

The three rules, in order

Teach the rules as a decision path rather than a list of endings. A two-question check — count the syllables, then look at the last letters — covers almost every adjective at A2 and B1.

Rule 3 is the default for long adjectives, and it is where rule 2 breaks: happy becomes happier, but careful does not become carefuller.

The irregular forms

Four common adjectives ignore both endings. They are frequent enough to teach as vocabulary, not as rules.

Further and farther both work for distance; further is also used for extra amounts, as in further information. Less belongs with quantities, and fewer with things you can count — a split covered in the quantifiers guide.

Spelling before the ending

Three spelling changes cover the adjectives learners write most often.

Say the word before writing it: the double consonant keeps the vowel short, so bigger keeps the sound of big.

The comparison structures

The endings are only half the lesson. The frame around them decides whether the sentence is correct.

The negative frame is the useful one to drill: not as heavy as means the same as lighter than, and switching between the two shows learners understand the scale rather than just the ending.

Pronunciation worth two minutes

The ending is weak, and learners often over-pronounce it.

• -er is a schwa. Taller ends in a short uh, not a strong err. Keep the stress on the adjective: TALL-er.
• -est is a weak /ɪst/. Tallest is TALL-ist, with the stress still at the front.
• More and most stay weak. In more careful, the stress sits on careful.
• Say the pair together. Reading tall, taller, tallest aloud trains the rhythm the endings need.

The same rhythm work appears in the adverbs of degree guide, where very, quite and really are weak next to the word they modify.

Errors to correct early

• A double comparative. More better, more easier and most tallest all mark the comparison twice. Use one marker only.
• The superlative with -er. She is the taller of the three needs tallest; the superlative never takes -er.
• Than and then swapped. Taller then me should be taller than me; than belongs to comparisons.
• More with a short adjective. More big should be bigger. The rule-1 adjectives never take more.
• As with than. As tall than should be as tall as; the equal frame uses as twice.
• Missing the article. The superlative alone takes the: the best, the most expensive.

Drill 1: the rule sort

Write twenty adjectives on the board. Hand each pair a chart with the three rules and have them sort the adjectives by the ending they take, then write each comparative form. The argument about happy is the point: a pair that decides it belongs in rule 2 has applied the -y check rather than guessed.

Finish by reading the sorted columns aloud, which adds the pronunciation pass.

Drill 2: compare the pictures

Put two pictures on the board — two cars, two rooms — and give each pair ninety seconds to produce five true sentences, at least one with as ... as, one with than and one with the ... est. The picture supplies the content, so the pair spends its attention on the form.

Then swap pictures and repeat; the frames need to be produced quickly, not explained slowly.

Drill 3: the error hunt

Give each pair eight sentences with one error each, drawn from the list above: This test is more easy than the last one, He is the most tallest in the group, My phone is better then yours. Pairs correct each sentence and label the error double, ending, word or missing article.

Labelling is the part that sticks: one early decision shapes the whole sentence, the same way the choice of tense does in the relative clauses guide and the past perfect guide. More rounds sit in the classroom grammar drills collection.

Frequently asked questions

When do I use -er and -est, and when do I use more and most?

One-syllable adjectives take -er and -est: tall, taller, tallest. Two-syllable adjectives that end in -y, -le, -ow or -er usually take them too: happy, happier, happiest. Longer adjectives take more and most: careful, more careful, most careful.

Why is it more better wrong?

Because the comparison is marked twice. Better is already the comparative of good, so more better adds a second marker. Use better on its own, or more with the plain adjective: more useful, never more easier.

What is the difference between than and then?

Than joins the two things being compared: She is taller than her brother. Then is a time word: We ate, then we left. They sound almost the same in fast speech, but only than belongs in a comparison.

Should I say the best in the class or the best of the class?

Both appear, with a small difference in focus. In is usual for a member inside a group or place: the tallest student in the class, the best restaurant in town. Of is usual before a plural set: the best of the three, the oldest of my friends.

How is the -er ending pronounced?

The -er ending is weak, a short schwa sound, so taller sounds like tall-uh rather than tall-err. The stress stays on the adjective, never on the ending. With more, the stress stays on the adjective too: more CARE-ful, not MORE careful.

Keep reading

• Quantifiers: How to Teach Much, Many and A Lot Of
• Adverbs of Degree: How to Teach Very, Quite and Really
• Classroom Grammar Drills That Work in a 40-Minute Lesson
• Relative Clauses: How to Teach Who, Which and That