Mastering Comparative and Superlative Adjectives: B1 English Grammar — B1 English grammar lesson by Langcom

Mastering Comparative and Superlative Adjectives: B1 English Grammar

Raúl Maguiña

Fondateur de Langcom | Examinateur pour les examens de Cambridge et du SIELE

septembre 20, 2026

B1✏️ Grammaire⏱️ 5 min de lecture📅 Mise à jour en septembre 2026
Comparative and superlative adjectives help us compare things in English. Nous utilisons comparative adjectives to show differences between two items or people. For example, My car is faster than your car. We often add -er to short adjectives or use more for longer ones, always followed by than. On the other hand, superlative adjectives describe one item that has the most or least of a quality within a group of three or more. For instance, This is the fastest car in the race. We typically add -est to short adjectives or use most for longer ones, always preceded by the. Understanding these forms is key for clear comparisons in everyday English and for B1 exams.

What Are Comparative Adjectives?

Comparative adjectives help us compare two nouns (people, places, or things). They show which one has more of a specific quality.

Nous utilisons comparative adjectives to say that one thing is different from another. We often use the word than after the adjective.

  • For short adjectives (one syllable), we usually add -er. Par exemple, tall becomes taller.
  • For longer adjectives (two or more syllables), we use more before the adjective. For example, expensive becomes more expensive.

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What Are Superlative Adjectives?

Superlative adjectives describe one noun that has the highest or lowest degree of a quality within a group of three or more.

They tell us which item is “the most” or “the least” of something. We always use the before a superlative adjective.

  • For short adjectives, we usually add -est. Par exemple, tall becomes the tallest.
  • For longer adjectives, we use most before the adjective. For example, expensive becomes the most expensive.

How Do We Form Comparative and Superlative Adjectives?

The way we form comparative et superlative adjectives depends on the number of syllables in the base adjective.

There are some general rules to follow, but also a few irregular forms you need to learn.

  • One-syllable adjectives: Add -er for comparative and -est for superlative.
    • cold → colder → coldest
  • One-syllable adjectives ending in -e: Add -r for comparative and -st for superlative.
    • large → larger → largest
  • One-syllable adjectives ending in consonant + vowel + consonant: Double the final consonant, then add -er ou -est.
    • hot → hotter → hottest
  • Two-syllable adjectives ending in -y: Change y à i, then add -er ou -est.
    • happy → happier → happiest
  • Adjectives with two or more syllables (not ending in -y): Utilisation more for comparative and most for superlative.
    • beautiful → more beautiful → most beautiful
  • Irregular adjectives: These do not follow the rules and must be memorized.
    • good → better → best
    • bad → worse → worst
    • far → farther/further → farthest/furthest
Rules for Forming Comparative and Superlative Adjectives
Adjective Type Base Form Comparative Form Superlative Form
One-syllable small smaller smallest
One-syllable ending in -e nice nicer nicest
One-syllable CVC (consonant-vowel-consonant) big bigger biggest
Two-syllables ending in -y easy easier easiest
Two or more syllables important more important most important
Irregular good better best
Irregular bad worse worst

Exemples

  • My new phone is faster than my old one.
  • This book is more interesting than the movie.
  • She is the happiest person I know.
  • Mount Everest is the highest mountain in the world.
  • Learning English is more difficult than learning Spanish for some people.
  • That was the worst meal I've ever had!
  • He is the most intelligent student in the class.
  • Today's weather is better than yesterday's.

Entraînement

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Erreurs courantes chez les hispanophones

Spanish speakers sometimes make specific mistakes with comparative et superlative adjectives:

  • Using more with -er: In Spanish, you might say "más rápido". In English, do not combine more with -er.
    • INCORRECT: My car is more faster than yours.
    • CORRECT: My car is faster than yours.
  • Forgetting than ou the: These small words are essential for correct comparisons.
    • INCORRECT: This book is more interesting that movie. (Missing than)
    • CORRECT: This book is more interesting than that movie.
    • INCORRECT: She is happiest person I know. (Missing the)
    • CORRECT: She is the happiest person I know.
  • Applying -er/-est to long adjectives: N'oubliez pas d'utiliser more/most for adjectives with two or more syllables (unless they end in -y).
    • INCORRECT: This is the beautifulest painting.
    • CORRECT: This is the most beautiful painting.

Questions fréquemment posées

What is the main difference between comparative and superlative adjectives?

Comparative adjectives compare two things (taller than, more interesting than). Superlative adjectives compare one thing to a group of three or more, showing it has the most of a quality (the tallest, the most interesting).

Can I use "more" with short adjectives like "big"?

No, you should not use more with short adjectives. For big, the comparative is bigger, et non more big.

How are comparative and superlative adjectives tested in the B1 Preliminary exam?

In the B1 Preliminary exam, you might find questions about comparative et superlative adjectives in the Reading and Writing parts, especially in tasks like "Open Cloze" or "Word Formation" where you need to choose the correct form of an adjective to complete a sentence.

Are there any adjectives that can use both -er/-est and more/most?

Yes, some two-syllable adjectives, especially those ending in -ow, -le, ou -er, can sometimes use both forms. For example, clever can be cleverer ou more clever, et cleverest ou most clever. However, the -er/-est forms are often more common for these.

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À propos de l'auteur : Raúl Maguiña

Raúl Maguiña est le directeur de l'Asociación Educativa Langcom, un centre agréé de préparation à l'examen Cambridge English situé à votre pays. Fort de plus d'une décennie d'expérience dans l'enseignement des langues et les certifications internationales, il a aidé des milliers d'étudiants, d'enseignants et d'établissements d'enseignement dans 25 pays à obtenir les certifications d'anglais Cambridge, IELTS, TOEFL et Michigan.

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