2.1.- One syllable comparatives and superlatives.
To form comparatives of superiority and superlative adjectives we have to follow certain rules. See the section below:

- One-syllable adjectives:
If adjectives have only one syllable, we add –er to form the comparative and –est to form the superlative:
Comparatives and superlatives of one-syllable adjectives ADJECTIVE COMPARATIVE SUPERLATIVE Cheap Cheaper than The Cheapest Old Older than The oldest Safe Safer than The safest Big Bigger than The biggest Thin Thinner than The thinnest
Think about it
Look at the adjective safe in the table, do we add -er / -est to form the comparative and superlative form?
Think about it
Look at the spelling of 'bigger'/'thinner' and 'biggest'/'thinnest', why do we double the consonant?
- One-syllable adjectives and two-syllable adjectives ending in –y:
If adjectives have one or two syllables and they end in –y, the spelling changes, we change –y to –i and add –er or –est.
Comparatives and superlatives of one-syllable and two-syllable adjectives ending in –y ADJECTIVE COMPARATIVE SUPERLATIVE Dry Drier than The driest Noisy Noisier than The noisiest Happy Happier than The happiest
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Read the following sentences and complete them with the correct comparative adjective.