Grammar summary
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Use -er / -est with many short adjectives; use more / most with longer adjectives.
Double the final consonant in big; change consonant + y to i in happy.
01 Comparative spelling
Write the comparative of the adjective in brackets.
Example: big becomes bigger.
02 Long comparative forms
Write the comparative of the adjective in brackets.
03 Irregular forms
Write the comparative of the adjective in brackets.
Grammar summary
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Do not combine more with an -er form: better, not more better.
Use than for a difference, and as ... as for equality.
04 Superlative spelling
Complete the superlative; the is already given.
Example: This is the oldest tree.
05 Long and irregular superlatives
Complete the superlative; the is already given.
06 Build the comparison
Complete with as, than or the.